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Publisher: Elsevier   (Total: 3177 journals)

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Showing 1 - 200 of 3178 Journals sorted alphabetically
Academic Pediatrics     Hybrid Journal   (Followers: 39, SJR: 1.655, CiteScore: 2)
Academic Radiology     Hybrid Journal   (Followers: 26, SJR: 1.015, CiteScore: 2)
Accident Analysis & Prevention     Partially Free   (Followers: 105, SJR: 1.462, CiteScore: 3)
Accounting Forum     Hybrid Journal   (Followers: 28, SJR: 0.932, CiteScore: 2)
Accounting, Organizations and Society     Hybrid Journal   (Followers: 42, SJR: 1.771, CiteScore: 3)
Achievements in the Life Sciences     Open Access   (Followers: 7)
Acta Anaesthesiologica Taiwanica     Open Access   (Followers: 6)
Acta Astronautica     Hybrid Journal   (Followers: 450, SJR: 0.758, CiteScore: 2)
Acta Automatica Sinica     Full-text available via subscription   (Followers: 2)
Acta Biomaterialia     Hybrid Journal   (Followers: 30, SJR: 1.967, CiteScore: 7)
Acta Colombiana de Cuidado Intensivo     Full-text available via subscription   (Followers: 3)
Acta de Investigación Psicológica     Open Access   (Followers: 2)
Acta Ecologica Sinica     Open Access   (Followers: 11, SJR: 0.18, CiteScore: 1)
Acta Histochemica     Hybrid Journal   (Followers: 5, SJR: 0.661, CiteScore: 2)
Acta Materialia     Hybrid Journal   (Followers: 327, SJR: 3.263, CiteScore: 6)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5, SJR: 0.504, CiteScore: 1)
Acta Mechanica Solida Sinica     Full-text available via subscription   (Followers: 9, SJR: 0.542, CiteScore: 1)
Acta Oecologica     Hybrid Journal   (Followers: 12, SJR: 0.834, CiteScore: 2)
Acta Otorrinolaringologica (English Edition)     Full-text available via subscription  
Acta Otorrinolaringológica Española     Full-text available via subscription   (Followers: 2, SJR: 0.307, CiteScore: 0)
Acta Pharmaceutica Sinica B     Open Access   (Followers: 2, SJR: 1.793, CiteScore: 6)
Acta Poética     Open Access   (Followers: 4, SJR: 0.101, CiteScore: 0)
Acta Psychologica     Hybrid Journal   (Followers: 26, SJR: 1.331, CiteScore: 2)
Acta Sociológica     Open Access   (Followers: 1)
Acta Tropica     Hybrid Journal   (Followers: 7, SJR: 1.052, CiteScore: 2)
Acta Urológica Portuguesa     Open Access  
Actas Dermo-Sifiliograficas     Full-text available via subscription   (Followers: 3, SJR: 0.374, CiteScore: 1)
Actas Dermo-Sifiliográficas (English Edition)     Full-text available via subscription   (Followers: 2)
Actas Urológicas Españolas     Full-text available via subscription   (Followers: 3, SJR: 0.344, CiteScore: 1)
Actas Urológicas Españolas (English Edition)     Full-text available via subscription   (Followers: 1)
Actualites Pharmaceutiques     Full-text available via subscription   (Followers: 7, SJR: 0.19, CiteScore: 0)
Actualites Pharmaceutiques Hospitalieres     Full-text available via subscription   (Followers: 3)
Acupuncture and Related Therapies     Hybrid Journal   (Followers: 8)
Acute Pain     Full-text available via subscription   (Followers: 15, SJR: 2.671, CiteScore: 5)
Ad Hoc Networks     Hybrid Journal   (Followers: 11, SJR: 0.53, CiteScore: 4)
Addictive Behaviors     Hybrid Journal   (Followers: 18, SJR: 1.29, CiteScore: 3)
Addictive Behaviors Reports     Open Access   (Followers: 9, SJR: 0.755, CiteScore: 2)
Additive Manufacturing     Hybrid Journal   (Followers: 13, SJR: 2.611, CiteScore: 8)
Additives for Polymers     Full-text available via subscription   (Followers: 23)
Advanced Drug Delivery Reviews     Hybrid Journal   (Followers: 194, SJR: 4.09, CiteScore: 13)
Advanced Engineering Informatics     Hybrid Journal   (Followers: 12, SJR: 1.167, CiteScore: 4)
Advanced Powder Technology     Hybrid Journal   (Followers: 17, SJR: 0.694, CiteScore: 3)
Advances in Accounting     Hybrid Journal   (Followers: 9, SJR: 0.277, CiteScore: 1)
Advances in Agronomy     Full-text available via subscription   (Followers: 17, SJR: 2.384, CiteScore: 5)
Advances in Anesthesia     Full-text available via subscription   (Followers: 30, SJR: 0.126, CiteScore: 0)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 2)
Advances in Applied Mathematics     Full-text available via subscription   (Followers: 12, SJR: 0.992, CiteScore: 1)
Advances in Applied Mechanics     Full-text available via subscription   (Followers: 12, SJR: 1.551, CiteScore: 4)
Advances in Applied Microbiology     Full-text available via subscription   (Followers: 24, SJR: 2.089, CiteScore: 5)
Advances In Atomic, Molecular, and Optical Physics     Full-text available via subscription   (Followers: 15, SJR: 0.572, CiteScore: 2)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4, SJR: 2.61, CiteScore: 7)
Advances in Botanical Research     Full-text available via subscription   (Followers: 1, SJR: 0.686, CiteScore: 2)
Advances in Cancer Research     Full-text available via subscription   (Followers: 35, SJR: 3.043, CiteScore: 6)
Advances in Carbohydrate Chemistry and Biochemistry     Full-text available via subscription   (Followers: 9, SJR: 1.453, CiteScore: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5, SJR: 1.992, CiteScore: 5)
Advances in Cell Aging and Gerontology     Full-text available via subscription   (Followers: 5)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 14)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 29, SJR: 0.156, CiteScore: 1)
Advances in Child Development and Behavior     Full-text available via subscription   (Followers: 11, SJR: 0.713, CiteScore: 1)
Advances in Chronic Kidney Disease     Full-text available via subscription   (Followers: 11, SJR: 1.316, CiteScore: 2)
Advances in Clinical Chemistry     Full-text available via subscription   (Followers: 26, SJR: 1.562, CiteScore: 3)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 20, SJR: 1.977, CiteScore: 8)
Advances in Computers     Full-text available via subscription   (Followers: 14, SJR: 0.205, CiteScore: 1)
Advances in Dermatology     Full-text available via subscription   (Followers: 15)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 13)
Advances in Digestive Medicine     Open Access   (Followers: 12)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 7)
Advances in Drug Research     Full-text available via subscription   (Followers: 26)
Advances in Ecological Research     Full-text available via subscription   (Followers: 44, SJR: 2.524, CiteScore: 4)
Advances in Engineering Software     Hybrid Journal   (Followers: 29, SJR: 1.159, CiteScore: 4)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 8)
Advances in Experimental Social Psychology     Full-text available via subscription   (Followers: 52, SJR: 5.39, CiteScore: 8)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 1)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 9)
Advances in Food and Nutrition Research     Full-text available via subscription   (Followers: 67, SJR: 0.591, CiteScore: 2)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 17)
Advances in Genetics     Full-text available via subscription   (Followers: 21, SJR: 1.354, CiteScore: 4)
Advances in Genome Biology     Full-text available via subscription   (Followers: 11, SJR: 12.74, CiteScore: 13)
Advances in Geophysics     Full-text available via subscription   (Followers: 7, SJR: 1.193, CiteScore: 3)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 26, SJR: 0.368, CiteScore: 1)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 11, SJR: 0.749, CiteScore: 3)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 26)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 3, SJR: 0.193, CiteScore: 0)
Advances in Immunology     Full-text available via subscription   (Followers: 37, SJR: 4.433, CiteScore: 6)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 10, SJR: 1.163, CiteScore: 2)
Advances in Insect Physiology     Full-text available via subscription   (Followers: 2, SJR: 1.938, CiteScore: 3)
Advances in Integrative Medicine     Hybrid Journal   (Followers: 6, SJR: 0.176, CiteScore: 0)
Advances in Intl. Accounting     Full-text available via subscription   (Followers: 3)
Advances in Life Course Research     Hybrid Journal   (Followers: 9, SJR: 0.682, CiteScore: 2)
Advances in Lipobiology     Full-text available via subscription   (Followers: 1)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Marine Biology     Full-text available via subscription   (Followers: 21, SJR: 0.88, CiteScore: 2)
Advances in Mathematics     Full-text available via subscription   (Followers: 15, SJR: 3.027, CiteScore: 2)
Advances in Medical Sciences     Hybrid Journal   (Followers: 9, SJR: 0.694, CiteScore: 2)
Advances in Medicinal Chemistry     Full-text available via subscription   (Followers: 6)
Advances in Microbial Physiology     Full-text available via subscription   (Followers: 5, SJR: 1.158, CiteScore: 3)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 25)
Advances in Molecular and Cellular Endocrinology     Full-text available via subscription   (Followers: 8)
Advances in Molecular Toxicology     Full-text available via subscription   (Followers: 7, SJR: 0.182, CiteScore: 0)
Advances in Nanoporous Materials     Full-text available via subscription   (Followers: 5)
Advances in Oncobiology     Full-text available via subscription   (Followers: 2)
Advances in Organ Biology     Full-text available via subscription   (Followers: 2)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 18, SJR: 1.875, CiteScore: 4)
Advances in Parallel Computing     Full-text available via subscription   (Followers: 7, SJR: 0.174, CiteScore: 0)
Advances in Parasitology     Full-text available via subscription   (Followers: 5, SJR: 1.579, CiteScore: 4)
Advances in Pediatrics     Full-text available via subscription   (Followers: 27, SJR: 0.461, CiteScore: 1)
Advances in Pharmaceutical Sciences     Full-text available via subscription   (Followers: 19)
Advances in Pharmacology     Full-text available via subscription   (Followers: 17, SJR: 1.536, CiteScore: 3)
Advances in Physical Organic Chemistry     Full-text available via subscription   (Followers: 9, SJR: 0.574, CiteScore: 1)
Advances in Phytomedicine     Full-text available via subscription  
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3, SJR: 0.109, CiteScore: 1)
Advances in Plant Biochemistry and Molecular Biology     Full-text available via subscription   (Followers: 11)
Advances in Plant Pathology     Full-text available via subscription   (Followers: 6)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 19)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 20, SJR: 0.791, CiteScore: 2)
Advances in Psychology     Full-text available via subscription   (Followers: 68)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 6, SJR: 0.371, CiteScore: 1)
Advances in Radiation Oncology     Open Access   (Followers: 3, SJR: 0.263, CiteScore: 1)
Advances in Small Animal Medicine and Surgery     Hybrid Journal   (Followers: 3, SJR: 0.101, CiteScore: 0)
Advances in Space Biology and Medicine     Full-text available via subscription   (Followers: 6)
Advances in Space Research     Full-text available via subscription   (Followers: 434, SJR: 0.569, CiteScore: 2)
Advances in Structural Biology     Full-text available via subscription   (Followers: 5)
Advances in Surgery     Full-text available via subscription   (Followers: 13, SJR: 0.555, CiteScore: 2)
Advances in the Study of Behavior     Full-text available via subscription   (Followers: 37, SJR: 2.208, CiteScore: 4)
Advances in Veterinary Medicine     Full-text available via subscription   (Followers: 20)
Advances in Veterinary Science and Comparative Medicine     Full-text available via subscription   (Followers: 15)
Advances in Virus Research     Full-text available via subscription   (Followers: 6, SJR: 2.262, CiteScore: 5)
Advances in Water Resources     Hybrid Journal   (Followers: 55, SJR: 1.551, CiteScore: 3)
Aeolian Research     Hybrid Journal   (Followers: 6, SJR: 1.117, CiteScore: 3)
Aerospace Science and Technology     Hybrid Journal   (Followers: 390, SJR: 0.796, CiteScore: 3)
AEU - Intl. J. of Electronics and Communications     Hybrid Journal   (Followers: 8, SJR: 0.42, CiteScore: 2)
African J. of Emergency Medicine     Open Access   (Followers: 6, SJR: 0.296, CiteScore: 0)
Ageing Research Reviews     Hybrid Journal   (Followers: 12, SJR: 3.671, CiteScore: 9)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 488, SJR: 1.238, CiteScore: 3)
Agri Gene     Hybrid Journal   (Followers: 1, SJR: 0.13, CiteScore: 0)
Agricultural and Forest Meteorology     Hybrid Journal   (Followers: 18, SJR: 1.818, CiteScore: 5)
Agricultural Systems     Hybrid Journal   (Followers: 32, SJR: 1.156, CiteScore: 4)
Agricultural Water Management     Hybrid Journal   (Followers: 45, SJR: 1.272, CiteScore: 3)
Agriculture and Agricultural Science Procedia     Open Access   (Followers: 4)
Agriculture and Natural Resources     Open Access   (Followers: 3)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 58, SJR: 1.747, CiteScore: 4)
Ain Shams Engineering J.     Open Access   (Followers: 5, SJR: 0.589, CiteScore: 3)
Air Medical J.     Hybrid Journal   (Followers: 8, SJR: 0.26, CiteScore: 0)
AKCE Intl. J. of Graphs and Combinatorics     Open Access   (SJR: 0.19, CiteScore: 0)
Alcohol     Hybrid Journal   (Followers: 12, SJR: 1.153, CiteScore: 3)
Alcoholism and Drug Addiction     Open Access   (Followers: 12)
Alergologia Polska : Polish J. of Allergology     Full-text available via subscription   (Followers: 1)
Alexandria Engineering J.     Open Access   (Followers: 2, SJR: 0.604, CiteScore: 3)
Alexandria J. of Medicine     Open Access   (Followers: 1, SJR: 0.191, CiteScore: 1)
Algal Research     Partially Free   (Followers: 11, SJR: 1.142, CiteScore: 4)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 2)
Allergologia et Immunopathologia     Full-text available via subscription   (Followers: 1, SJR: 0.504, CiteScore: 1)
Allergology Intl.     Open Access   (Followers: 5, SJR: 1.148, CiteScore: 2)
Alpha Omegan     Full-text available via subscription   (SJR: 3.521, CiteScore: 6)
ALTER - European J. of Disability Research / Revue Européenne de Recherche sur le Handicap     Full-text available via subscription   (Followers: 11, SJR: 0.201, CiteScore: 1)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 54, SJR: 4.66, CiteScore: 10)
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring     Open Access   (Followers: 6, SJR: 1.796, CiteScore: 4)
Alzheimer's & Dementia: Translational Research & Clinical Interventions     Open Access   (Followers: 6, SJR: 1.108, CiteScore: 3)
Ambulatory Pediatrics     Hybrid Journal   (Followers: 5)
American Heart J.     Hybrid Journal   (Followers: 58, SJR: 3.267, CiteScore: 4)
American J. of Cardiology     Hybrid Journal   (Followers: 67, SJR: 1.93, CiteScore: 3)
American J. of Emergency Medicine     Hybrid Journal   (Followers: 47, SJR: 0.604, CiteScore: 1)
American J. of Geriatric Pharmacotherapy     Full-text available via subscription   (Followers: 13)
American J. of Geriatric Psychiatry     Hybrid Journal   (Followers: 14, SJR: 1.524, CiteScore: 3)
American J. of Human Genetics     Hybrid Journal   (Followers: 37, SJR: 7.45, CiteScore: 8)
American J. of Infection Control     Hybrid Journal   (Followers: 29, SJR: 1.062, CiteScore: 2)
American J. of Kidney Diseases     Hybrid Journal   (Followers: 37, SJR: 2.973, CiteScore: 4)
American J. of Medicine     Hybrid Journal   (Followers: 50)
American J. of Medicine Supplements     Full-text available via subscription   (Followers: 3, SJR: 1.967, CiteScore: 2)
American J. of Obstetrics and Gynecology     Hybrid Journal   (Followers: 273, SJR: 2.7, CiteScore: 4)
American J. of Ophthalmology     Hybrid Journal   (Followers: 66, SJR: 3.184, CiteScore: 4)
American J. of Ophthalmology Case Reports     Open Access   (Followers: 5, SJR: 0.265, CiteScore: 0)
American J. of Orthodontics and Dentofacial Orthopedics     Full-text available via subscription   (Followers: 6, SJR: 1.289, CiteScore: 1)
American J. of Otolaryngology     Hybrid Journal   (Followers: 25, SJR: 0.59, CiteScore: 1)
American J. of Pathology     Hybrid Journal   (Followers: 32, SJR: 2.139, CiteScore: 4)
American J. of Preventive Medicine     Hybrid Journal   (Followers: 28, SJR: 2.164, CiteScore: 4)
American J. of Surgery     Hybrid Journal   (Followers: 39, SJR: 1.141, CiteScore: 2)
American J. of the Medical Sciences     Hybrid Journal   (Followers: 12, SJR: 0.767, CiteScore: 1)
Ampersand : An Intl. J. of General and Applied Linguistics     Open Access   (Followers: 7)
Anaerobe     Hybrid Journal   (Followers: 4, SJR: 1.144, CiteScore: 3)
Anaesthesia & Intensive Care Medicine     Full-text available via subscription   (Followers: 67, SJR: 0.138, CiteScore: 0)
Anaesthesia Critical Care & Pain Medicine     Full-text available via subscription   (Followers: 25, SJR: 0.411, CiteScore: 1)
Anales de Cirugia Vascular     Full-text available via subscription   (Followers: 1)
Anales de Pediatría     Full-text available via subscription   (Followers: 3, SJR: 0.277, CiteScore: 0)
Anales de Pediatría (English Edition)     Full-text available via subscription  
Anales de Pediatría Continuada     Full-text available via subscription  
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 5, SJR: 4.849, CiteScore: 10)
Analytica Chimica Acta     Hybrid Journal   (Followers: 44, SJR: 1.512, CiteScore: 5)
Analytica Chimica Acta : X     Open Access  
Analytical Biochemistry     Hybrid Journal   (Followers: 218, SJR: 0.633, CiteScore: 2)
Analytical Chemistry Research     Open Access   (Followers: 13, SJR: 0.411, CiteScore: 2)
Analytical Spectroscopy Library     Full-text available via subscription   (Followers: 14)
Anesthésie & Réanimation     Full-text available via subscription   (Followers: 2)
Anesthesiology Clinics     Full-text available via subscription   (Followers: 25, SJR: 0.683, CiteScore: 2)
Angiología     Full-text available via subscription   (SJR: 0.121, CiteScore: 0)
Angiologia e Cirurgia Vascular     Open Access   (Followers: 1, SJR: 0.111, CiteScore: 0)
Animal Behaviour     Hybrid Journal   (Followers: 231, SJR: 1.58, CiteScore: 3)
Animal Feed Science and Technology     Hybrid Journal   (Followers: 7, SJR: 0.937, CiteScore: 2)
Animal Reproduction Science     Hybrid Journal   (Followers: 7, SJR: 0.704, CiteScore: 2)

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Similar Journals
Journal Cover
Advances in Insect Physiology
Journal Prestige (SJR): 1.938
Citation Impact (citeScore): 3
Number of Followers: 2  
 
  Full-text available via subscription Subscription journal
ISSN (Print) 0065-2806
Published by Elsevier Homepage  [3177 journals]
  • Flight-fecundity tradeoffs in wing-monomorphic insects
    • Abstract: Publication date: Available online 5 April 2019Source: Advances in Insect PhysiologyAuthor(s): Natasha Tigreros, Goggy DavidowitzAbstractWinged insects often spend considerable amounts of energy in flight, searching for food, escaping predators, and dispersing. In females, flight is hypothesized to reduce resources available for egg production, thus leading to a tradeoff between flight and fecundity. Yet, the generality of a flight-fecundity tradeoff in insects may have been overestimated, given that empirical validation of such a tradeoff has largely relied on studies in wing-polymorphic insects. In this review, we evaluate evidence of a flight-fecundity tradeoff in wing-monomorphic insects by conducting a systematic literature search. We compiled information from studies on migratory and non-migratory insects, testing for an association between flight and fecundity and using a number of different methods—phenotypic and genotypic correlations, manipulation of resource availability, and manipulation of either flight or fecundity. Although most studies indicated a negative association between flight and fecundity in wing-monomorphic insects, evidence for a tradeoff between the two traits was less prevalent. In several contexts, there were species that showed none or a positive association between both traits. Importantly, flight and fecundity in wing-monomorphic insects was related in a number of ways: via physiological constraints—resource-based tradeoffs—as well as via biomechanical constraints—when egg loads affected take-off performance—, due to adaptive negative correlations—when switching from flight to egg production if appropriate conditions to reproduce were encountered—and, due to adaptive positive correlations—when optimal flight and high fecundity were favoured for colonizing new habitats.
       
  • The physiology of insect families: A door to the study of social evolution
    • Abstract: Publication date: Available online 1 April 2019Source: Advances in Insect PhysiologyAuthor(s): Stephen T. TrumboAbstractMany current issues in evolutionary biology focus on social behaviour. These include the re-purposing of neuroendocrine systems and cell signalling during the asocial to social transition, the behavioural and evolutionary dynamics of interacting genomes, the resolution of intralocus conflict, nongenetic inheritance and buffering of environmental stress. Representative examples of parent and offspring physiology are discussed, with emphasis on social interaction. This proximate background is used to address current controversies in the study of social evolution. This review will suggest how insect families, which range from simple to highly eusocial, are amenable subjects for combining behavioural, physiological and molecular study to advance our understanding of the evolutionary process.
       
  • Sex ratios in the haplodiploid herbivores, Aleyrodidae and Thysanoptera: A
           review and tools for study
    • Abstract: Publication date: Available online 22 February 2019Source: Advances in Insect PhysiologyAuthor(s): Elizabeth Canlas Bondy, Martha S. HunterAbstractSex allocation studies in hymenopterans have been used to test adaptive predictions, to predict the quality of biological control agents, to theorize how eusociality is maintained, and to predict population dynamics. Almost all hymenopterans are haplodiploid, so mothers may have an ability to adaptively adjust sex allocation. The insect order Thysanoptera (thrips) and the Hemipteran family Aleyrodidae (whiteflies) are also haplodiploid and include important agricultural pests, but have been the subject of comparatively few sex allocation studies. This review summarizes studies of Aleyrodidae and Thysanoptera sex ratios as influenced by temperature, host plant, nutrition, conspecifics, competitors, endosymbionts, predators, parasitoids and other pathogens. Sex ratio influences were reported in studies testing effects of temperature, host plant, conspecifics, competitors, bacterial endosymbionts and a fungal pathogen. Viruses, predators, and parasitoids were not found to affect sex ratios in Aleyrodidae and Thysanoptera, although not many studies have collected the data to assess these factors. Because sex ratio studies in Thysanoptera and Aleyrodidae have only recorded secondary, adult or operational sex ratios instead of primary sex ratios at oviposition, differential developmental mortality is a potential confounding variable for interpreting all of these records, and it is difficult to confirm whether sex ratios reflect sex allocation. To conclude whether sex allocation by mothers is taking place, primary sex ratios need to be recorded. Our review refers to a cytogenetic and survival assay to find primary sex ratios or confirm differential developmental mortality in these haplodiploid organisms.
       
  • Insect prostaglandins and other eicosanoids: From molecular to
           physiological actions
    • Abstract: Publication date: Available online 22 February 2019Source: Advances in Insect PhysiologyAuthor(s): David Stanley, Yonggyun KimAbstractIn this essay we provide a comprehensive update on the biology and molecular biology of prostaglandins (PGs) and other eicosanoids in insects. Phospholipase A2 (PLA2) is the first biochemical step in eicosanoid biosynthesis. Cellular and secretory PLA2 types, similar to those of vertebrates, have been identified and demonstrated to act in insect eicosanoid biosynthesis. However, eicosanoid biosynthetic pathways in insects are not identical to those of vertebrates. The relatively low concentrations of arachidonic acid (AA) in phospholipids of insect tissues suggest that PLA2 may hydrolyse linoleic acid as a precursor of eicosanoid biosynthesis and its subsequent desaturation and elongation leads to AA. Unlike vertebrates, AA is not oxidized by cyclooxygenase, but by a specific peroxidase called peroxinectin to produce a prostaglandin (PG) precursor, PGH2, which is then isomerized into PGE2 by PGE2 synthase. PGs and other eicosanoids mediate insect reproduction such as oocyte development and egg-laying behaviour, trehalose metabolism, fluid secretion, and immunity. They also interact with insect cytokine and other immune mediators to propagate non-self recognition signals to immune effector tissues. In the cross-talks, eicosanoids act as downstream signals because any intervention of eicosanoid signalling leads to substantial immunosuppression. Because host immunosuppression favours pathogens, some entomopathogens exploit a PLA2 inhibitory strategy to express their virulence. We propose PGs and other eicosanoids as central signalling systems in insect biology.
       
  • The Malpighian tubules and cryptonephric complex in lepidopteran larvae
    • Abstract: Publication date: Available online 18 February 2019Source: Advances in Insect PhysiologyAuthor(s): Dennis Kolosov, Michael J. O'DonnellAbstractLepidopterans (butterflies and moths) are an ecologically and agriculturally important group of holometabolous insects. Their larvae and adults exhibit trophic partitioning, which is reflected by the various modifications of their digestive and excretory systems. Adults are capable of flight and feed mostly on the nectar of plants, acting as pollinators. Larvae are voracious leaf eaters whose extremely alkaline midgut (pH ≈ 11) is an adaptation to high tannin levels in the host plants. Morphologically and functionally regionalized Malpighian tubules of the larva modify fluid as it flows through them. The larvae also exhibit the so-called cryptonephric condition, where the distal end of the tubule is juxtaposed to the rectum and enveloped by the perinephric membrane. The distal part of the free tubule adjacent to the ileum, termed the distal ileac plexus, is characterized by a high density of secondary cells. Recent studies have identified several unusual aspects of ion transport physiology of the distal ileac plexus: (i) gap junctional coupling of principal and secondary cells that allows them to transport ions in opposite directions, (ii) the ability to switch between K+ secretion and K+ reabsorption depending on the input from the cryptonephric tubule, (iii) the presence of voltage-gated, ligand-gated and mechanosensitive ion channels and (iv) coordinated regulation of water and septate junction permeability during the reversal from secretion to reabsorption (presumably aimed at retention of water and solute content in the distal ileac plexus lumen, while Na+ and K+ are being reabsorbed). We describe recent advances in understanding ion-transporting and regulatory mechanisms in the Malpighian tubules of larval Lepidoptera with a special emphasis on the distal ileac plexus segment.
       
  • Mechanisms regulating phenotypic plasticity in wing polyphenic insects
    • Abstract: Publication date: Available online 15 February 2019Source: Advances in Insect PhysiologyAuthor(s): Abigail M. Hayes, Mark D. Lavine, Hiroki Gotoh, Xinda Lin, Laura Corley LavineAbstractWing polyphenisms are found in a diversity of insect species. These insects are characterized by their ability to produce multiple, discrete, alternate morphologies based on environmental signals received during development from a single genotype. Individuals within a species that exhibit wing polyphenism have varying degrees of flight capability based on their wing morphology. This classic example of a life history trade-off between migration (the winged morph) and reproduction (the short-winged morph) is predicated on the prediction that the long wing form is at a reproductive disadvantage compared to the short wing form. Many species of aphids, brown planthoppers, and crickets exhibit this remarkable ability to assess environmental cues before producing either a long wing, small ovary female or a short wing, large ovary female. Data from studies of environmental factors such as nutrition, density, injury, photoperiod, temperature, interactions with other species, and pesticides are discussed. A comprehensive review of endocrine and cell signalling evidence is synthesized and compared. The goal of this review is to synthesize the environmental, endocrine, and cell signalling information on these insects to determine what the next steps are for research in this area. Developmental phenotypic plasticity is vital for the success of a species and we explore the mechanisms for how species respond to environmental stimuli from the gene to the phenotype.
       
  • The circadian system in insects: Cellular, molecular, and functional
           organization
    • Abstract: Publication date: Available online 15 February 2019Source: Advances in Insect PhysiologyAuthor(s): Kenji Tomioka, Akira MatsumotoAbstractThe circadian clock organizes the physiology and behaviour of insects to adapt to a daily and seasonally changing environment. The clock oscillates with a period of approximately 24 h in a self-sustained manner, showing an exact 24 h period through synchronization to the daily environmental cycle, and regulates various physiological functions through neural or humoral pathways. These properties of the clock have been extensively studied at molecular and cellular levels in Drosophila melanogaster since the mid-1980s. During the last 2 decades, progress in molecular biology techniques has promoted studies on the clock system in other insects, including higher and lower phylogenetic groups, such as butterflies, honeybees, crickets, and firebrats, enabling us to compare the system, at least in part, among different insect groups.
       
  • Molecular physiology of insect midgut
    • Abstract: Publication date: Available online 13 February 2019Source: Advances in Insect PhysiologyAuthor(s): Walter R. Terra, Ignacio G. Barroso, Renata O. Dias, Clelia FerreiraAbstractNew approaches have led to advances in the molecular knowledge of digestion and nutrient absorption in insects. Cell fractionation with proteomics revealed the molecular composition of the insect midgut microvill and associated with RNA interference supported a model of microapocrine secretion. The use of mainly transcriptomics confirmed the widespread occurrence of a midgut mucus layer and clarified the differences between peritrophic membrane peritrophins and cuticular proteins analogous to peritrophins. The use of recombinant enzymes and bioinformatic tools resulted in a better understanding of lysosomal enzymes as digestive enzymes in curculionidae beetles and hemipterans, the characterization of several plant cell wall-degrading enzymes and the finding of their origin by horizontal gene transference from bacteria. Proteomics, transcriptomics and in vivo experiments with inhibitors clarified aspects of midgut buffering, nutrient absorption and midgut fluid fluxes. In the last case, the results support a model of digestive enzyme recycling to avoid enzyme excretion.
       
  • Chapter One - Rethink RNAi in Insect Pest Control: Challenges and
           Perspectives
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 55Author(s): Jinzhi Niu, Clauvis Nji Tizi Taning, Olivier Christiaens, Guy Smagghe, Jin-Jun WangAbstractRNA interference (RNAi), usually referring to the small interfering (si)RNA pathway, is promising in the development of a new generation of insect pest control products. However, prior to its exploitation for insect pest control, it is important to consider potential limiting factors, such as immune response and fitness cost, RNAi efficiency and dsRNA degradation, and virus-encoded suppressor of RNAi factors in the development of the RNAi-based pest control strategy. Additional challenges such as lack of feasible dsRNA delivery methods in practice, low efficiency in pest control capacity and evolution of resistance to RNAi have largely constrained the application of RNAi in practice. This review highlights how insect ecology and integrated pest management principles, taking into account RNAi, could be exploited to promote sustainable insect pest control.
       
  • Chapter Three - CRISPR/Cas9 as the Key to Unlocking the Secrets of
           Butterfly Wing Pattern Development and Its Evolution
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 54Author(s): Luca Livraghi, Arnaud Martin, Melanie Gibbs, Nora Braak, Saad Arif, Casper J. BreukerAbstractWith the exception of a few moth and butterfly species, gene-editing tools in Lepidoptera have been lagging behind other well-studied insects. In order to elucidate gene function across the order, it is necessary to establish tools that enable such gene manipulation. CRISPR/Cas9 is a promising technique and here we review the recent progress made in implementing the technique in butterflies; from broad patterning of the wing, to the development of specific colours in particular wing sections, to eyespot formation. The often species-specific responses to the CRISPR/Cas9-induced mutations in candidate genes, underscore the significance of these genes in the wide evolutionary diversification of butterfly wing patterns. We further discuss potential caveats in the interpretation of the resulting mutant phenotypes obtained through CRISPR/Cas9 gene editing. Finally, we discuss the possibilities CRISPR/Cas9 offers beyond mere knockout of candidate genes, including the potential for the generation of transgenics that will further elucidate the developmental genetic basis for wing pattern evolution.
       
  • Chapter One - Structural Colours in Lepidopteran Scales
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 54Author(s): Sébastien R. Mouchet, Pete VukusicAbstractPhotonic structures incorporated in lepidopteran scales are responsible for a very broad range of optical effects: iridescence, narrow-band reflection, large solid-angle scattering, polarisation effects, additive colour mixing and more. They have been the most investigated natural photonic structures for a long time. Such studies provide both understanding of the optical mechanisms and the biological functions behind these effects as well as inspiration for the design and development of novel photonic materials through a bioinspiration approach. In this chapter, research regarding structural colours in lepidopteran wing scales is reviewed through the classification of the related photonic structures. Selected examples of these structures are used to illustrate how such optical effects are brought about.
       
  • Introductory Chapter: Butterfly Wing Patterns: Not Just Painting
           by Numbers
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 54Author(s): Richard H. ffrench-ConstantAbstractDespite our growing understanding of the genes underlying butterfly wing pattern formation and pigmentation, there is a growing gap in our understanding of how these two processes are linked in developmental time. Here I review the concept of the developmental heterochrony that drives the differential rates of scale development across the butterfly wing, which in turn are responsible for the final differences in their pigmentation. I discuss how this ‘developmental gap’ might be best filled and what gene products might occupy it. Despite early implications that ecdysone receptor expression must be involved in the differential read-out of the declining ecdysteroid titre in the pupa close to eclosion, no other genes linking these two processes have been identified. As scales in the wing initiate development, their progress must be driven by genes involved in the cell cycle which must in turn cause the differential scale development that we see across the developing wing. Key advances in our ability to genetically transform butterflies using CRISPR–CAS are highlighted and a potential road map suggested for the possible use of this and other techniques in filling the growing ‘gap’ between patterning and pigmentation.
       
  • Chapter Seven - Screening, Efficacy and Mechanisms of Microbial Control
           Agents Against Sucking Pest Insects as Thrips
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 55Author(s): Shengyong Wu, Liangde Tang, Feng Fang, Donggang Li, Xin Yuan, Zhongren Lei, Yulin GaoAbstractPolyphagous thrips are among the most important economically pests that cause serious damage in various ornamental and vegetable crops throughout the world. Because of their small size and cryptic habits, a number of thrips species are easy to invade into new areas. For a long period, thrips control has mainly relied on frequent use of insecticides, which lead to a series of ecological problems. Although a number of alternative management tactics have been developed in many cropping systems, many invasive thrips continue to spread internationally and display vast damage potential. This chapter reviews microbial control of thrips with focus on the entomopathogenic fungi Beauveria bassiana, Metarhizium anisopliae, Isaria fumosorosea and Lecanicillium lecanii. The strains of fungal pathogens that were screened and proven to be effective for control of thrips should be developed worldwide and available for growers. We also discuss three areas of future research that will be necessary in improving management programs of thrips.
       
  • Chapter Five - Beyond Baculoviruses: Additional Biotechnological Platforms
           Based on Insect RNA Viruses
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 55Author(s): Yongchao Zhao, Jingchen Sun, Vassiliki Labropoulou, Luc SweversAbstractThe baculovirus expression vector system (BEVS) is currently an important and versatile biotechnological platform for protein expression, particularly for large protein complexes, such as viral-like particles (VLPs). However, baculoviruses seem to show limited potential to be developed as vectors for virus-induced gene silencing, a technique that was originally developed to rapidly analyse gene function in plants. On the other hand, reverse genetics systems of insect RNA viruses can be proposed to function as a biotechnological platform for the production of RNA silencing vectors in insects. RNA viruses that can be considered are nonenveloped viruses with positive-sense ssRNA genome (nodavirus, tetravirus, dicistrovirus, macula-like virus) and with segmented dsRNA genome (cytoplasmic polyhedrosis virus, entomobirnavirus). Engineering of the RNA-dependent RNA polymerase and the viral suppressor of RNAi proteins may accomplish the generation of viral vectors that differ in their persistence/pathogenicity levels for multiple applications in RNA silencing (from specific gene function analysis to insect pest control). VLPs based on the capsid shell and associated proteins of viruses with segmented dsRNA genome also could provide a safer alternative for dsRNA delivery. In such case, the BEVS and MultiBac technology may provide an ideal system for production.
       
  • Chapter Four - The Potential Control Strategies Based on the Interaction
           Between Indoor Cockroaches and Their Symbionts in China
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 55Author(s): Xian Cui Zhang, Fan ZhangAbstractCockroaches, the important indoor sanitary pests in urban worldwide. In China, there are six species of dominant indoor cockroaches which are increasingly hard to control due to their high adaptability, strong fecundity and extensive insecticide resistance. These cockroaches harbour abundant microorganisms varying from bacteria to viruses, fungi and protists, which have formed an interdependent symbiotic relationship with hosts in the process of long-term coevolution. A growing research has revealed that symbionts can modulate limited metabolic networks, thereby expanding ecological niches of host insects as a significant regulatory factor in insect growth and development. Therefore, in-depth study on the mechanisms of symbiont–insect interactions can shed light on a new perspective for pest prevention and control technology. Here, we give a general overview on classification and hazards of indoor cockroaches in China, as well as species, distribution and transmission mechanism of symbionts within cockroaches. Besides, we mainly discuss the interactions between insects and symbionts from the following aspects: nutritional physiology, reproductive regulation, pesticide resistance, defence, behaviour and so on. Based on the earlier symbiotic interactions, we propose some promising new insights into integrated pest management of cockroaches (i.e., utilizing symbionts to control cockroaches), such as application of Wolbachia to restrict population number, utilization of interactions between symbionts and entomopathogenic fungi including synergism or antagonism to accelerate host death, limiting host's vectorial capacity via paratransgenesis, push–pull strategy.
       
  • Chapter Three - The Honeybee Queen: The Implications of Eusociality on
           Parasite-Mediated Competition
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 55Author(s): Ivan Meeus, Guy SmaggheAbstractA reliable pollination of crops is provided by integrated crop pollination (ICP). It combines the use of managed and wild pollinators in a location-specific manner. The honeybee is our best known ally and an essential part of ICP. Here we highlight two main aspects of the honeybee's biology and use some anthropomorphism elements to explain our point of view. The first is on social behaviour, the shift from single mating towards a promiscuous lifestyle was essential to develop full eusociality. This also means that some half sisters are stuck in a social framework and raise fertile offspring, while having low kinship with them. Second, a queen develops a large workforce of bees, with a division of labour. Aside from nursing and foraging, also time is allocated towards defence. We question if more assertive strategies are present. We speculate on a workforce carrying parasites, to perform parasite-mediated competition with other, yet solitary, bees. We discuss two mechanisms: (i) where social immunity tempers the effect of a specific parasite in a social bee; (ii) current domestication practises could also facilitate parasite-mediated competition in both directions.
       
  • Chapter Two - microRNAs as Regulators of Insect Host–Pathogen
           Interactions and Immunity
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 55Author(s): Sassan AsgariAbstractInsects respond to infection through the stimulation of their immune pathways, which requires activation of transcription factors and changes in gene expression. Tight regulation of these pathways is essential for homeostasis and effective immune responses upon infection. As part of the RNA interference pathway, microRNAs play important roles in regulation of gene expression through their involvements in various biological processes, including immunity and host–pathogen interactions. Beside microRNAs encoded by the host, microRNAs or microRNA-like small noncoding RNAs produced by pathogens have also been implicated in regulating host as well as pathogen genes to provide a more suitable environment for pathogen replication and evasion of host defence responses. Here, after a brief introduction to microRNA biogenesis and the ways they interact with target genes, their role in the interaction of insects with a variety of pathogens is reviewed.
       
  • Chapter Two - More Than Colours: An Eco-Evolutionary Framework for Wing
           Shape Diversity in Butterflies
    • Abstract: Publication date: 2018Source: Advances in Insect Physiology, Volume 54Author(s): Dirleane O. Rossato, Lucas A. Kaminski, Cristiano A. Iserhard, Leandro DuarteAbstractWings are key innovations that have revolutionized the life of winged organisms and have moulded terrestrial ecosystems through new interactions (e.g. pollination). Among flying organisms, butterflies draw attention for their astonishing diversity of colour patterns, but their wings are much more than colours. The wing morphology may vary for different reasons, including communication. Thus, the different factors, acting together or under conflicting ways, moulded the wing shape. Mimicry rings are promising model systems for evaluating the evolution of wing shapes since trait convergence for mimicry is an identifiable force among others selective pressures. An eco-evolutionary framework can help us disentangle the relative role of each step in the evolution of wing shapes. Biotic and abiotic filters can affect wing morphology through pathway changes during the ontogeny, including sexual dimorphism, developmental trade-offs, nutritional food quality and environmental conditions. During the adult stage, both sexual and natural selection determine the combination of genes that are selected and will persist for future generations. All these selective pressures acting repeatedly over the time must result in different macroevolutionary scenarios of traits, like as genetic drift, vicariance, adaptive radiation and speciation. Finally, we propose that comparative studies on mimicry rings, with closely related species presenting changes in wing morphology according to both environmental and sexual behaviour, including sex-limited dimorphism, can be useful systems to understand the role of selective pressures driving the evolution of wing shapes.
       
 
 
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