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  Subjects -> BIOLOGY (Total: 2992 journals)
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BIOLOGY (1423 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 1720 Journals sorted alphabetically
AAPS Journal     Hybrid Journal   (Followers: 20)
Achievements in the Life Sciences     Open Access   (Followers: 4)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 21)
Acta Biologica Colombiana     Open Access   (Followers: 7)
Acta Biologica Hungarica     Full-text available via subscription   (Followers: 4)
Acta Biologica Sibirica     Open Access  
Acta Biomaterialia     Hybrid Journal   (Followers: 25)
Acta Biotheoretica     Hybrid Journal   (Followers: 5)
Acta Chiropterologica     Full-text available via subscription   (Followers: 6)
acta ethologica     Hybrid Journal   (Followers: 4)
Acta Limnologica Brasiliensia     Open Access   (Followers: 3)
Acta Médica Costarricense     Open Access   (Followers: 2)
Acta Musei Silesiae, Scientiae Naturales : The Journal of Silesian Museum in Opava     Open Access  
Acta Parasitologica     Hybrid Journal   (Followers: 9)
Acta Scientiarum. Biological Sciences     Open Access   (Followers: 2)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
Actualidades Biológicas     Open Access   (Followers: 1)
Advanced Health Care Technologies     Open Access   (Followers: 4)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 3)
Advances in Bioinformatics     Open Access   (Followers: 18)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4)
Advances in Biology     Open Access   (Followers: 8)
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 6)
Advances in Cell Biology     Open Access   (Followers: 23)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 12)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 11)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 5)
Advances in Ecological Research     Full-text available via subscription   (Followers: 41)
Advances in Ecology     Open Access   (Followers: 16)
Advances in Environmental Sciences - International Journal of the Bioflux Society     Open Access   (Followers: 20)
Advances in Enzyme Research     Open Access   (Followers: 9)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 7)
Advances in Genome Biology     Full-text available via subscription   (Followers: 11)
Advances in High Energy Physics     Open Access   (Followers: 19)
Advances in Human Biology     Open Access   (Followers: 1)
Advances in Life Science and Technology     Open Access   (Followers: 14)
Advances in Life Sciences     Open Access   (Followers: 4)
Advances in Marine Biology     Full-text available via subscription   (Followers: 16)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 22)
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3)
Advances in Regenerative Biology     Open Access   (Followers: 1)
Advances in Structural Biology     Full-text available via subscription   (Followers: 8)
Advances in Virus Research     Full-text available via subscription   (Followers: 5)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 6)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 1)
Ageing Research Reviews     Hybrid Journal   (Followers: 8)
Aging Cell     Open Access   (Followers: 10)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat     Open Access  
AJP Cell Physiology     Full-text available via subscription   (Followers: 13)
AJP Endocrinology and Metabolism     Full-text available via subscription   (Followers: 22)
AJP Lung Cellular and Molecular Physiology     Full-text available via subscription   (Followers: 3)
Al-Kauniyah : Jurnal Biologi     Open Access  
Alasbimn Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Biology Teacher     Full-text available via subscription   (Followers: 12)
American Fern Journal     Full-text available via subscription   (Followers: 1)
American Journal of Agricultural and Biological Sciences     Open Access   (Followers: 10)
American Journal of Bioethics     Hybrid Journal   (Followers: 10)
American Journal of Biostatistics     Open Access   (Followers: 9)
American Journal of Human Biology     Hybrid Journal   (Followers: 12)
American Journal of Medical and Biological Research     Open Access   (Followers: 5)
American Journal of Plant Sciences     Open Access   (Followers: 19)
American Journal of Primatology     Hybrid Journal   (Followers: 15)
American Malacological Bulletin     Full-text available via subscription   (Followers: 3)
American Naturalist     Full-text available via subscription   (Followers: 65)
Amphibia-Reptilia     Hybrid Journal   (Followers: 6)
Anaerobe     Hybrid Journal   (Followers: 4)
Analytical Methods     Full-text available via subscription   (Followers: 7)
Anatomical Science International     Hybrid Journal   (Followers: 2)
Animal Cells and Systems     Hybrid Journal   (Followers: 4)
Annales de Limnologie - International Journal of Limnology     Hybrid Journal   (Followers: 1)
Annales françaises d'Oto-rhino-laryngologie et de Pathologie Cervico-faciale     Full-text available via subscription   (Followers: 3)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3)
Annales UMCS, Biologia     Open Access   (Followers: 1)
Annals of Applied Biology     Hybrid Journal   (Followers: 8)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 18)
Annals of Human Biology     Hybrid Journal   (Followers: 4)
Annual Review of Biomedical Engineering     Full-text available via subscription   (Followers: 17)
Annual Review of Biophysics     Full-text available via subscription   (Followers: 25)
Annual Review of Cancer Biology     Full-text available via subscription  
Annual Review of Cell and Developmental Biology     Full-text available via subscription   (Followers: 38)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 14)
Annual Review of Genomics and Human Genetics     Full-text available via subscription   (Followers: 19)
Annual Review of Phytopathology     Full-text available via subscription   (Followers: 10)
Anthropological Review     Open Access   (Followers: 25)
Anti-Infective Agents     Hybrid Journal   (Followers: 3)
Antibiotics     Open Access   (Followers: 8)
Antioxidants     Open Access   (Followers: 4)
Antioxidants & Redox Signaling     Hybrid Journal   (Followers: 8)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5)
Anzeiger für Schädlingskunde     Hybrid Journal   (Followers: 1)
Apidologie     Hybrid Journal   (Followers: 4)
Apmis     Hybrid Journal   (Followers: 1)
APOPTOSIS     Hybrid Journal   (Followers: 8)
Applied Bionics and Biomechanics     Open Access   (Followers: 8)
Applied Vegetation Science     Full-text available via subscription   (Followers: 9)
Aquaculture Environment Interactions     Open Access   (Followers: 2)
Aquaculture International     Hybrid Journal   (Followers: 22)
Aquaculture Reports     Open Access   (Followers: 3)
Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society     Open Access   (Followers: 6)
Aquatic Biology     Open Access   (Followers: 4)
Aquatic Ecology     Hybrid Journal   (Followers: 30)
Aquatic Ecosystem Health & Management     Hybrid Journal   (Followers: 13)
Aquatic Science and Technology     Open Access   (Followers: 3)
Aquatic Toxicology     Hybrid Journal   (Followers: 19)
Archaea     Open Access   (Followers: 3)
Archiv für Molluskenkunde: International Journal of Malacology     Full-text available via subscription   (Followers: 3)
Archives of Biomedical Sciences     Open Access   (Followers: 7)
Archives of Microbiology     Hybrid Journal   (Followers: 8)
Archives of Natural History     Hybrid Journal   (Followers: 7)
Archives of Oral Biology     Hybrid Journal   (Followers: 2)
Archives of Virology     Hybrid Journal   (Followers: 5)
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2)
Arid Ecosystems     Hybrid Journal   (Followers: 3)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Arquivos do Museu Dinâmico Interdisciplinar     Open Access  
Arthropod Structure & Development     Hybrid Journal   (Followers: 2)
Arthropods     Open Access   (Followers: 1)
Artificial DNA: PNA & XNA     Hybrid Journal   (Followers: 2)
Artificial Photosynthesis     Open Access   (Followers: 1)
Asian Bioethics Review     Full-text available via subscription   (Followers: 1)
Asian Journal of Biodiversity     Open Access   (Followers: 5)
Asian Journal of Biological Sciences     Open Access   (Followers: 3)
Asian Journal of Cell Biology     Open Access   (Followers: 5)
Asian Journal of Developmental Biology     Open Access   (Followers: 2)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 2)
Asian Journal of Nematology     Open Access   (Followers: 3)
Asian Journal of Poultry Science     Open Access   (Followers: 4)
Australian Life Scientist     Full-text available via subscription   (Followers: 2)
Australian Mammalogy     Hybrid Journal   (Followers: 5)
Autophagy     Hybrid Journal   (Followers: 2)
Avian Biology Research     Full-text available via subscription   (Followers: 4)
Avian Conservation and Ecology     Open Access   (Followers: 10)
Bacteriology Journal     Open Access   (Followers: 2)
Bacteriophage     Full-text available via subscription   (Followers: 3)
Bangladesh Journal of Bioethics     Open Access  
Bangladesh Journal of Plant Taxonomy     Open Access  
Bangladesh Journal of Scientific Research     Open Access   (Followers: 1)
Berita Biologi     Open Access   (Followers: 1)
Between the Species     Open Access   (Followers: 1)
Bio Tribune Magazine     Hybrid Journal  
BIO Web of Conferences     Open Access  
BIO-Complexity     Open Access  
Bio-Grafía. Escritos sobre la Biología y su enseñanza     Open Access  
Bioanalytical Reviews     Hybrid Journal   (Followers: 2)
Biocatalysis and Biotransformation     Hybrid Journal   (Followers: 6)
Biochemistry and Cell Biology     Hybrid Journal   (Followers: 14)
Biochimie     Hybrid Journal   (Followers: 7)
BioControl     Hybrid Journal   (Followers: 5)
Biocontrol Science and Technology     Hybrid Journal   (Followers: 5)
Biodemography and Social Biology     Hybrid Journal   (Followers: 1)
Biodiversidad Colombia     Open Access  
Biodiversity : Research and Conservation     Open Access   (Followers: 26)
Biodiversity and Natural History     Open Access   (Followers: 5)
Biodiversity Data Journal     Open Access   (Followers: 3)
Biodiversity Informatics     Open Access  
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access  
Bioeksperimen : Jurnal Penelitian Biologi     Open Access  
Bioelectrochemistry     Hybrid Journal   (Followers: 2)
Bioelectromagnetics     Hybrid Journal   (Followers: 1)
Bioenergy Research     Hybrid Journal   (Followers: 2)
Bioengineering and Bioscience     Open Access   (Followers: 1)
BioEssays     Hybrid Journal   (Followers: 10)
Bioethics     Hybrid Journal   (Followers: 14)
BioéthiqueOnline     Open Access  
Biofabrication     Hybrid Journal   (Followers: 3)
Biogeosciences (BG)     Open Access   (Followers: 10)
Biogeosciences Discussions (BGD)     Open Access   (Followers: 1)
Bioinformatics     Hybrid Journal   (Followers: 293)
Bioinformatics and Biology Insights     Open Access   (Followers: 15)
Bioinspiration & Biomimetics     Hybrid Journal   (Followers: 6)
Biointerphases     Open Access   (Followers: 1)
Biojournal of Science and Technology     Open Access  
Biologia     Hybrid Journal  
Biologia on-line : Revista de divulgació de la Facultat de Biologia     Open Access  
Biological Bulletin     Partially Free   (Followers: 4)
Biological Control     Hybrid Journal   (Followers: 5)
Biological Invasions     Hybrid Journal   (Followers: 16)
Biological Journal of the Linnean Society     Hybrid Journal   (Followers: 15)
Biological Letters     Open Access   (Followers: 4)
Biological Procedures Online     Open Access  
Biological Psychiatry     Hybrid Journal   (Followers: 42)
Biological Psychology     Hybrid Journal   (Followers: 6)
Biological Research     Open Access  
Biological Rhythm Research     Hybrid Journal   (Followers: 2)
Biological Theory     Hybrid Journal   (Followers: 1)
Biological Trace Element Research     Hybrid Journal  
Biologicals     Full-text available via subscription   (Followers: 9)
Biologics: Targets & Therapy     Open Access   (Followers: 1)
Biologie Aujourd'hui     Full-text available via subscription  
Biologie in Unserer Zeit (Biuz)     Hybrid Journal   (Followers: 42)
Biologija     Open Access  
Biology     Open Access   (Followers: 5)
Biology and Philosophy     Hybrid Journal   (Followers: 16)
Biology Bulletin     Hybrid Journal   (Followers: 1)
Biology Bulletin Reviews     Hybrid Journal  
Biology Direct     Open Access   (Followers: 7)
Biology Letters     Full-text available via subscription   (Followers: 35)

        1 2 3 4 5 6 7 8 | Last

Journal Cover Apidologie
  [SJR: 1.14]   [H-I: 57]   [4 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0044-8435 - ISSN (Online) 1297-9678
   Published by Springer-Verlag Homepage  [2355 journals]
  • Influence of different pollen diets on the development of hypopharyngeal
           
    • Authors: Eslam Omar; Aly A. Abd-Ella; Mohammed M. Khodairy; Rudolf Moosbeckhofer; Karl Crailsheim; Robert Brodschneider
      Pages: 425 - 436
      Abstract: We examined the consumption rate of protein diets in caged and free-flying honey bees, amino acid composition of diets, and diet effects on gland development. The effect of seven different diets (sugar solution only, Feedbee®, Helianthus pollen, Sinapis pollen, Asparagus pollen, Castanea pollen, and mixed pollen diet) on the development of the hypopharyngeal (HPG) and acid glands (AG) was tested in caged honey bees. Caged bees consumed the protein diet mainly at the age of 1–8 days, with the highest consumption rate on day 3. Different diets affected the development of both glands. The acini of HPG attained their maximum size in caged bees at an age of 5 days. Bees fed with Castanea sp., Asparagus sp., or mixed pollen had the largest glands among all test groups of this age. The AG sacs of caged bees grew in size between 5 and 12 days and were at day 18 less affected by different protein diets. Castanea sp. and mixed pollen diets were preferably consumed in free-flying colonies.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-016-0487-x
      Issue No: Vol. 48, No. 4 (2017)
       
  • Antennal sensilla of cleptoparasitic and non-parasitic bees in two
           subfamilies of Apidae
    • Authors: Gerónimo Luis Galvani; Rocío Ana González-Vaquero; Carolina Guerra-Navarro; Beatriz Patricia Settembrini
      Pages: 437 - 449
      Abstract: In bees, most of the comparative studies linking the sensory system and behavior were performed in social species. Here, we describe the morphology of antennal sensilla in solitary and cleptoparasitic bees of Apinae and Nomadinae. The external and internal structure of sensilla and setae as well as their distribution in flagella were studied in detail in two different host-cleptoparasitic associations. In addition, taking into account the presence of pores, the distribution of sensilla was compared in females and males of 39 species of these subfamilies. It was found that males of non-parasitic bees showed a higher number of multiporous sensilla. Females had more uniporous and nonporous sensilla than males. Cleptoparasitic bees showed a low diversity in types of sensilla and no sexual dimorphism in number. The pattern of sensilla in males and their cleptoparasitic females was discussed in the context of their ecological roles.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-016-0486-y
      Issue No: Vol. 48, No. 4 (2017)
       
  • Nest architecture, life cycle, and natural enemies of the neotropical
           leafcutting bee Megachile ( Moureapis ) maculata (Hymenoptera:
           Megachilidae) in a montane forest
    • Authors: William De O. Sabino; Yasmine Antonini
      Pages: 450 - 460
      Abstract: Studies on the nesting biology of cavity nesting hymenoptera (bees and wasps) have stimulated many questions related to the behavior, life cycle, trophic niche, and sex ratio to better understanding of the life history of insects. Leafcutting bees are common insects, and many are important and efficient pollinators of crops and other plants. We studied the nesting biology of Megachile (Moureapis) maculata in a montane semi-deciduous forest in Brazil using trap nests in order to improve the knowledge of aspects of the natural history of this important pollinator group. During 27 months, 87 nests were collected with an average of seven brood cells per nest. Most of the nests were in cavities of 0.9 cm in diameter (77%), and the number of brood cells ranged from 1 to 11. Absence of seasonality in nesting behavior suggests a multivoltine species. The total mortality rate was 26%, with the cuckoo bee Coelyoxis (Acrocoelioxys) sp. being the main natural enemy attacking 15% of brood cells. The sex ratio is clearly male-biased (1:0.42). Females and their brood cells were larger than males and their brood cells, which may suggest an imbalance in the energetic cost of each sex. The success of this bee species in colonizing trap nests makes it an interesting potential opportunity to use this species for pollination of cultivated Asteraceae plant species, like sunflower.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-016-0488-9
      Issue No: Vol. 48, No. 4 (2017)
       
  • Convergent evolution of pollen transport mode in two distantly related bee
           genera (Hymenoptera: Andrenidae and Melittidae)
    • Authors: Zachary M. Portman; Vincent J. Tepedino
      Pages: 461 - 472
      Abstract: Purposeful transport of pollen represents a key innovation in the evolution of bees from predatory wasps. Most bees transport pollen on specialized hairs on the hind legs or ventral metasoma in one of three ways: moist, dry, or “glazed,” which combines dry and moist transport. The evolutionary pathway among these three transport modes is unclear, though dry transport has been hypothesized to be ancestral. We address this hypothesis using museum specimens and published records of the bee genera Perdita (Andrenidae) and Hesperapis (Melittidae), two distantly related groups whose pollen transport modes appear to have converged. Most species in both genera transport moistened pollen; glazed and dry transport are limited to derived clades of specialists on floral hosts in Asteraceae and Onagraceae, with specialization on Asteraceae associated with more elaborate scopal hairs. The associations between transport mode, host plant, and hair type may be due to the sticky pollenkitt of asteraceous pollen grains and the viscin threads of Onagraceae pollen, which provide alternates to the binding properties of nectar. These findings suggest that the hypothesis that dry transport is ancestral in bees should be reexamined.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-016-0489-8
      Issue No: Vol. 48, No. 4 (2017)
       
  • Leaf foraging sources of leafcutter bees in a tropical environment:
           implications for conservation
    • Authors: Sneha S. Kambli̇; M. S. Aiswarya; K. Manoj; Sangeetha Varma; G. Asha; T. P. Rajesh; Palatty Allesh Sinu
      Pages: 473 - 482
      Abstract: Leafcutter bees collect leaf discs to encase brood cells. However, our understanding of their use of plants as nesting resources, which is critical for their conservation, is poor. We followed plants and observed bees cutting leaves to understand the leaf and plant traits of the leaf forage plants of Megachile spp. We studied whether the leaf size explains the cut size and the number of cuts in the leaves. The bees collected leaves from 59 species, 49 genera and 25 families of plants of various habits. Plant habit, leaf morphotype and leaf size did not influence leaf choice by the bees. Of the plants surveyed, 45.22% had the distinguishable cutting marks. About 63% and 98% of the plants the bees used are native to the region and to the tropical southern hemisphere, respectively. Bees selected leaves over an extreme size range, and the leaf size predicted the number of cuts on a leaf. Comparing our results with other studies, we conclude that the leafcutter bees’ selection of plants is adapted to the local environment.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-016-0490-2
      Issue No: Vol. 48, No. 4 (2017)
       
  • Effects of synthetic acaricides on honey bee grooming behavior against the
           parasitic Varroa destructor mite
    • Authors: Igor Medici de Mattos; Ademilson E. E. Soares; David R. Tarpy
      Pages: 483 - 494
      Abstract: Varroa destructor is currently one of the main threats for western apiculture. Today, synthetic acaricides (specifically coumaphos, amitraz, and tau-fluvalinate) are the most common methods to control Varroa infestations. These compounds, however, are frequently related to a wide range of side effects in the host, as well as a long half-life inside the hive matrices (wax and honey). The western honey bee, Apis mellifera, exhibits natural defense mechanisms against the mite such as grooming behavior, which is a sequence of bodily movements where the host scrapes its legs across its body surface to remove the mite. We tested the effects of synthetic acaricides on the performance of grooming behavior by adult honey bee workers. We found that acaricide exposure prior to grooming delayed grooming and reduced the overall duration of grooming behavior. Our data add to a list of other sublethal behavioral consequences of acaricides that may subvert a comprehensive approach to Varroa control in managed colonies.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0491-9
      Issue No: Vol. 48, No. 4 (2017)
       
  • Risk assessment for large African hive beetles ( Oplostomus spp.)—a
           review
    • Authors: Benjamin P. OLDROYD; Michael H. ALLSOPP
      Pages: 495 - 503
      Abstract: We review the biology of two species of large African hive beetle Oplostomus haroldi and Oplostomus fuligineus (Coleoptera, Scarabideae, Cetoniinae). We argue that they have the potential to become invasive and highly damaging to beekeeping worldwide. We provide descriptions of all life stages that should aid in the identification of the beetles. Adult beetles prey on bee brood, whereas larvae and pupae live in dung. Up to 700 beetles have been reported in individual colonies in Kenya.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0493-7
      Issue No: Vol. 48, No. 4 (2017)
       
  • Hygienic behavior in Melipona quadrifasciata anthidioides (Apidae,
           Meliponini)
    • Authors: Jossimara Neiva de Jesus; Emerson Dechechi Chambó; Geni da Silva Sodré; Newton Tavares Escocard de Oliveira; Carlos Alfredo Lopes de Carvalho
      Pages: 504 - 512
      Abstract: Hygienic behavior in stingless bees is a trait of workers that confers colony-level resistance against some brood diseases. Workers of hygienic colonies detect, uncap and remove dead or diseased brood from the nest cells. We examined the hygienic behavior in stingless bees (Melipona quadrifasciata anthidioides) from freeze-killed brood assay using liquid nitrogen. Responses were measured at 14 times (3, 6, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240 and 264 h after freeze-killing of the brood). Workers were estimated to remove on average 65% of larvae and 34% of dead pupae within 48 h of freezing. Workers removed dead brood rapidly after uncapping the cells. Strong colonies showed a greater removal of dead pupae, while the size of the population did not influence the removal of dead larvae. These findings report for the first time the hygienic behavior in M. q. anthidioides and confirm that workers have more difficulty removing pupae compared with larvae from the combs.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0495-5
      Issue No: Vol. 48, No. 4 (2017)
       
  • Areas of endemism in the Atlantic Forest: quantitative biogeography
           insights from orchid bees (Apidae: Euglossini)
    • Authors: André R.S. GARRAFFONI; Filipe R. MOURA; Anete P. LOURENÇO
      Pages: 513 - 522
      Abstract: Orchid bees are endemic to the Neotropics and were sampled more intensively in the Atlantic Forest in the last decade than in that of other Brazilian biomes. In this study, we aimed at identifying the main distributional patterns and areas of endemism of Euglossini orchid bee species in the Atlantic Forest using parsimony analysis of endemism and endemicity analysis. The results of these analyses were partly congruent and supported the idea that the distribution of orchid bees is structured into at least five areas of endemism: Pernambuco/coastal Bahia; Espírito Santo/Rio de Janeiro/south of Minas Gerais; north of Minas Gerais/central Bahia; southeast of Minas Gerais/northeast, central and coast of São Paulo/central and coastal Paraná; and central/coast of Santa Catarina-Rio Grande do Sul. Most of these areas were consistent with other groups of organisms and indicate the existence of real areas of endemism in the Atlantic Rain Forest.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0494-6
      Issue No: Vol. 48, No. 4 (2017)
       
  • The primitively social behavior of Euglossa cordata (Hymenoptera, Apidae,
           Euglossini): a view from the perspective of kin selection theory and
           models of reproductive skew
    • Authors: Gabriele Antico Freiria; Carlos Alberto Garófalo; Marco Antonio Del Lama
      Pages: 523 - 532
      Abstract: The present study investigated the level of reproductive skew during the reactivation processes of 11 nests of Euglossa cordata. Behavioral observations associated with kinship analysis between offspring and females involved in these processes were carried out. Different types of associations between females occurred in these reactivations: between mothers and daughters, sisters, cousins, and unrelated females. Behavioral observations and Mendelian segregation analysis at 12 microsatellite loci attributed all the offspring to the dominant female of each nest. The results revealed a full reproductive skew at the different processes of reactivation, irrespective of the type of association between females. Thus, our data indicate that reproductive skew was not associated with genetic relatedness in E. cordata.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0496-4
      Issue No: Vol. 48, No. 4 (2017)
       
  • Mitochondrial DNA variation of Apis mellifera iberiensis : further
           insights from a large-scale study using sequence data of the tRNA leu
           -cox2 intergenic region
    • Authors: Julio Chávez-Galarza; Lionel Garnery; Dora Henriques; Cátia J. Neves; Wahida Loucif-Ayad; J . Spencer Jonhston; M . Alice Pinto
      Pages: 533 - 544
      Abstract: A large-scale survey of the Iberian honey bee (Apis mellifera iberiensis) diversity patterns, using sequence data of the tRNAleu-cox2 mitochondrial DNA (mtDNA) region, demonstrates that earlier studies based on the DraI test missed significant components of genetic variation. Based on results from this survey, existing haplotype names were revised and updated following a nomenclature system established earlier and extended herein for the intergenic region. A more complete picture of the complex diversity patterns of IHBs is revealed that includes 164 novel haplotypes, 113 belonging to lineage A and 51 to lineage M and within lineage A and 69 novel haplotypes that belong to sub-lineage AI, 13 to AII, and 31 to AIII. Within lineage M, two novel haplotypes show a striking architecture with features of lineages A and M, which based on sequence comparisons and relationships among haplotypes are seemingly ancestral. These data expand our knowledge of the complex architecture of the tRNAleu-cox2 intergenic region in Apis mellifera and re-emphasizes the importance of Iberia as a source of honey bee mtDNA diversity.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0498-2
      Issue No: Vol. 48, No. 4 (2017)
       
  • Testing the relative importance of local resources and landscape
           connectivity on Bombus impatiens (Hymenoptera, Apidae) colonies
    • Authors: John D. Herrmann; Nick M. Haddad; Douglas J. Levey
      Pages: 545 - 555
      Abstract: Bee populations are decreasing worldwide. The underlying causes are likely determined by factors at different scales. We tested the relative importance of local resources and landscape connectivity on 64 bumblebee (Bombus impatiens) colonies in experimentally isolated and connected habitat fragments. We used colony mass, no. of workers, and no. of gynes to estimate colony performance. Landscape connectivity did not significantly affect colony performance, but local floral resources had a significantly positive effect, especially in isolated fragments. These results suggest that bumblebee colonies encountered sufficient floral resources within the local 1.4 ha habitat fragments to support colony growth, making long-distance foraging trips to neighboring fragments unnecessary. From a conservation perspective, we suggest that efforts to improve colony performance should prioritize boosting local floral resources over manipulation of large-scale landscape features.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0499-1
      Issue No: Vol. 48, No. 4 (2017)
       
  • Landscape and pesticide effects on honey bees: forager survival and
           expression of acetylcholinesterase and brain oxidative genes
    • Authors: Mohamed Alburaki; Sandra J. Steckel; Deniz Chen; Erin McDermott; Milagra Weiss; John A. Skinner; Heather Kelly; Gus Lorenz; David R. Tarpy; William G. Meikle; John Adamczyk; Scott D. Stewart
      Pages: 556 - 571
      Abstract: The aim of the present work was to assess the effects of landscape and pesticides on honey bee survival and physiological stress. Integrated use of acetylcholinesterase and detoxification enzymes was tested on honey bee brains for detecting possible exposure to pesticides. Foragers were tracked in agricultural and non-agricultural landscapes in West Tennessee (USA) and then recovered for molecular and chemical analyses. In addition, four honey bee cohorts were fed imidacloprid in the laboratory ad libitum for several weeks and were analyzed by RT-qPCR for gene expression. Pesticides were identified at different concentrations in both crop flowers and recovered foragers. No significant differences in foragers’ mortality were found among locations. Acetylcholinesterase and detoxification genes showed no response to exposure to pesticides except for GstS3 and GstS4. Our results suggest that none of the studied genes make suitable biomarkers for honey bee exposed to pesticides.
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0497-3
      Issue No: Vol. 48, No. 4 (2017)
       
  • Scientific note: the histerid beetle Omalodes foveola (Coleoptera:
           Histeridae) found as a Melittophile, co-inhabiting Africanized honeybee
           hives in Brazil
    • Authors: Edegar Krüger; Cassiano Kahlow; Fernando W. T. Leivas; Guilherme Schnell e Schühli
      Pages: 572 - 574
      PubDate: 2017-07-01
      DOI: 10.1007/s13592-017-0492-8
      Issue No: Vol. 48, No. 4 (2017)
       
  • Pollen preferences among the bee species visiting apple ( Malus pumila )
           in New York
    • Authors: Laura Russo; Bryan Danforth
      Abstract: Maintaining a diverse and abundant wild bee community is essential for sustainable agricultural pollination, especially in crops in which wild bees are effective pollinators. Many land managers have an economic interest in encouraging healthy wild bee populations, but it is not always clear how to accomplish this. In apple orchards, wild bees play a critical role as pollinators, but are active before most forbs begin to flower. To investigate which flowering plant species might serve as alternative pollen hosts for the most abundant wild bee species collected in eastern apple orchards, we analyzed the pollen carried by 15 wild bee species and 1 managed bee species (Apis mellifera) collected during apple bloom. We identified the pollen grains carried by these bees and found that the majority of alternative pollen hosts for apple visitors are early blooming tree species, including six other tree genera. This may partly explain why the presence of forest fragments is an important predictor of bee abundance and species richness in New York apple orchards.
      PubDate: 2017-07-03
      DOI: 10.1007/s13592-017-0525-3
       
  • An abbreviated SNP panel for ancestry assignment of honeybees ( Apis
           mellifera )
    • Authors: Nadine C. Chapman; A. Lelania Bourgeois; Lorraine D. Beaman; Julianne Lim; Brock A. Harpur; Amro Zayed; Michael H. Allsopp; Thomas E. Rinderer; Benjamin P. Oldroyd
      Abstract: We examine whether a panel of 37 single nucleotide polymorphisms (SNPs) has the same power as a more expensive panel of 95 SNPs to assign ancestry of honeybees (Apis mellifera) to three ancestral lineages. We selected SNPs using allele frequencies, such that poorly performing SNPs were excluded. We find that ancestry assignment is comparable between the two panels. Importation of bee semen from countries where Africanized bees are present into countries where Africanized bees are absent would be facilitated if small proportions of semen derived from Africanized drones can be reliably detected. We used the abbreviated panel to determine if semen from a single Africanized drone could be detected when mixed with the semen of 10, 20 or 40 non-Africanized drones. We found that the use of the 37 SNP test on a mixed sample would fail to detect the contribution of a single Africanized male. It is therefore important that the cadavers of the males contributing semen are individually tested.
      PubDate: 2017-06-27
      DOI: 10.1007/s13592-017-0522-6
       
  • Accessing the genetic content of Xylocopa frontalis bees (Apidae,
           Xylocopini) for sustainable management in pollination services of passion
           fruit
    • Authors: Jayça Amate Marim Toledo; Camila Nonato Junqueira; Solange Cristina Augusto; Maria Cristina Arias; Rute Magalhães Brito
      Abstract: The commercial use of pollinators can be beneficial to many crops. In the case of passion fruit, the supply of nests of Xylocopa frontalis in crop areas was shown to be effective for the improvement of the production and quality of fruits, but little is known about how the manipulation of native bees could change the genetic patrimony of local populations. The aim of this study was to describe the genetic composition of X. frontalis bees attracted to two agroecosystems, one natural reserve and one urban area based on mitochondrial DNA (partial sequencing of the gene cytochrome oxidase I) and microsatellite markers. One of the study areas comprised most of the exclusive haplotypes (50%); however, the microsatellite data showed no structuring between areas. Based on our data, we suggest a plan for exchanging nests of X. frontalis to passion fruit areas taking into account the genetic composition of local populations, avoiding then disturbances to their natural genetic patrimony.
      PubDate: 2017-06-27
      DOI: 10.1007/s13592-017-0524-4
       
  • Apitoxin harvest impairs hypopharyngeal gland structure in Apis mellifera
           honey bees
    • Authors: Thaís S. Bovi; Paula Onari; Sérgio A. A. Santos; Luis A. Justulin; Ricardo O. Orsi
      Abstract: Apitoxin harvesting is a stressful practice for honey bees Apis mellifera L. due to the release of alarm pheromones that alter communication and behaviour and may also affect their physiology. Thus, the goal of this research was to verify the effects of apitoxin harvesting on the development of the hypopharyngeal glands (HGs), evaluating the number and area of acini. For this, ten beehives were subjected to one of two treatments: T1, without apitoxin harvest and T2, with apitoxin harvested by an electric collector. We collected ten 6-day-old honey bees in each treatment once every month (October through December). The HGs were removed and were processed for morphological-stereological analysis. The worker bees from hives subjected to treatment T2 showed a smaller acinar area and lower number of acini than those from hives subjected to treatment T1. Thus, apitoxin harvest negatively affects the structure of the hypopharyngeal glands, consequently affecting the production of royal jelly.
      PubDate: 2017-06-23
      DOI: 10.1007/s13592-017-0520-8
       
  • Aging results in a decline in cellular energy metabolism in the
           trophocytes and oenocytes of worker honeybees ( Apis mellifera )
    • Authors: Cheng-Yen Lu; Yu-Lung Chuang; Chin-Yuan Hsu
      Abstract: Trophocytes and oenocytes of honeybees are used in studies of cellular senescence, but their cellular energy metabolism with age is poorly understood. In this study, the molecules involved in cellular energy metabolism were evaluated in the trophocytes and oenocytes of young and old worker bees. The results revealed that (i) β-oxidation and protein synthesis decreased with age, (ii) fat and glycogen accumulation increased with age, and (iii) glycolysis did not change with age. These results indicate that the trophocytes and oenocytes of young bees have higher activity of cellular energy metabolism compared with old worker bees and that aging results in a decline in the cellular energy metabolism of worker bees.
      PubDate: 2017-06-23
      DOI: 10.1007/s13592-017-0521-7
       
  • Protecting a managed bee pollinator against climate change: strategies for
           an area with extreme climatic conditions and socioeconomic vulnerability
    • Authors: Tereza C. Giannini; Camila Maia-Silva; Andre L. Acosta; Rodolfo Jaffé; Airton T. Carvalho; Celso F. Martins; Fernando C. V. Zanella; Carlos A. L. Carvalho; Michael Hrncir; Antonio M. Saraiva; José Oswaldo Siqueira; Vera L. Imperatriz-Fonseca
      Abstract: In the semiarid region of Northeastern Brazil, populations of native bees can be jeopardized by future climate change. The present study aims to analyze the impact of climate change on a native stingless bee (Melipona subnitida Ducke). This species is a locally important pollinator of wild and crop plants, also exploited for honey production by regional beekeepers. Using species distributional modeling, we assessed the effects of climate change on the geographic distribution of M. subnitida. We found a potential shift in future areas where species can find climatically suitable habitats toward the edges of the current pollinator distribution with a consequent central disconnection, which can threaten species dispersal and gene flow. We propose to reconnect the remaining suitable areas through conservation and restoration programs based on the distribution of the plant species that are used by this bee as source of pollen and nectar and propose also, other strategies that aim to increase the welfare of local people
      PubDate: 2017-06-21
      DOI: 10.1007/s13592-017-0523-5
       
 
 
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