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Publisher: Springer-Verlag (Total: 2350 journals)

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Showing 1 - 200 of 2350 Journals sorted alphabetically
3D Printing in Medicine     Open Access  
3D Research     Hybrid Journal   (Followers: 21, SJR: 0.222, CiteScore: 1)
4OR: A Quarterly J. of Operations Research     Hybrid Journal   (Followers: 10, SJR: 0.825, CiteScore: 1)
AAPS J.     Hybrid Journal   (Followers: 22, SJR: 1.118, CiteScore: 4)
AAPS PharmSciTech     Hybrid Journal   (Followers: 7, SJR: 0.752, CiteScore: 3)
Abdominal Imaging     Hybrid Journal   (Followers: 14, SJR: 0.866, CiteScore: 2)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4, SJR: 0.439, CiteScore: 0)
Academic Psychiatry     Full-text available via subscription   (Followers: 23, SJR: 0.53, CiteScore: 1)
Academic Questions     Hybrid Journal   (Followers: 8, SJR: 0.106, CiteScore: 0)
Accreditation and Quality Assurance: J. for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 26, SJR: 0.316, CiteScore: 1)
Acoustical Physics     Hybrid Journal   (Followers: 11, SJR: 0.359, CiteScore: 1)
Acoustics Australia     Hybrid Journal   (SJR: 0.232, CiteScore: 1)
Acta Analytica     Hybrid Journal   (Followers: 7, SJR: 0.367, CiteScore: 0)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1, SJR: 0.675, CiteScore: 1)
Acta Biotheoretica     Hybrid Journal   (Followers: 4, SJR: 0.284, CiteScore: 1)
Acta Diabetologica     Hybrid Journal   (Followers: 17, SJR: 1.587, CiteScore: 3)
Acta Endoscopica     Hybrid Journal   (Followers: 1)
acta ethologica     Hybrid Journal   (Followers: 4, SJR: 0.769, CiteScore: 1)
Acta Geochimica     Hybrid Journal   (Followers: 6, SJR: 0.24, CiteScore: 1)
Acta Geodaetica et Geophysica     Hybrid Journal   (Followers: 2, SJR: 0.305, CiteScore: 1)
Acta Geotechnica     Hybrid Journal   (Followers: 7, SJR: 1.588, CiteScore: 3)
Acta Informatica     Hybrid Journal   (Followers: 5, SJR: 0.517, CiteScore: 1)
Acta Mathematica     Hybrid Journal   (Followers: 12, SJR: 7.066, CiteScore: 3)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2, SJR: 0.452, CiteScore: 1)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6, SJR: 0.379, CiteScore: 1)
Acta Mathematica Vietnamica     Hybrid Journal   (SJR: 0.27, CiteScore: 0)
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal   (SJR: 0.208, CiteScore: 0)
Acta Mechanica     Hybrid Journal   (Followers: 21, SJR: 1.04, CiteScore: 2)
Acta Mechanica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.607, CiteScore: 2)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 7, SJR: 0.576, CiteScore: 2)
Acta Meteorologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.638, CiteScore: 1)
Acta Neurochirurgica     Hybrid Journal   (Followers: 6, SJR: 0.822, CiteScore: 2)
Acta Neurologica Belgica     Hybrid Journal   (Followers: 1, SJR: 0.376, CiteScore: 1)
Acta Neuropathologica     Hybrid Journal   (Followers: 5, SJR: 7.589, CiteScore: 12)
Acta Oceanologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.334, CiteScore: 1)
Acta Parasitologica     Hybrid Journal   (Followers: 10, SJR: 0.641, CiteScore: 1)
Acta Physiologiae Plantarum     Hybrid Journal   (Followers: 2, SJR: 0.574, CiteScore: 2)
Acta Politica     Hybrid Journal   (Followers: 14, SJR: 0.605, CiteScore: 1)
Activitas Nervosa Superior     Hybrid Journal   (SJR: 0.147, CiteScore: 0)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 6, SJR: 0.103, CiteScore: 0)
ADHD Attention Deficit and Hyperactivity Disorders     Hybrid Journal   (Followers: 23, SJR: 0.72, CiteScore: 2)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 9)
Administration and Policy in Mental Health and Mental Health Services Research     Partially Free   (Followers: 16, SJR: 1.005, CiteScore: 2)
Adsorption     Hybrid Journal   (Followers: 4, SJR: 0.703, CiteScore: 2)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4, SJR: 0.698, CiteScore: 1)
Advances in Atmospheric Sciences     Hybrid Journal   (Followers: 37, SJR: 0.956, CiteScore: 2)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 19, SJR: 0.812, CiteScore: 1)
Advances in Contraception     Hybrid Journal   (Followers: 3)
Advances in Data Analysis and Classification     Hybrid Journal   (Followers: 51, SJR: 1.09, CiteScore: 1)
Advances in Gerontology     Partially Free   (Followers: 8, SJR: 0.144, CiteScore: 0)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 28, SJR: 1.64, CiteScore: 2)
Advances in Manufacturing     Hybrid Journal   (Followers: 3, SJR: 0.475, CiteScore: 2)
Advances in Polymer Science     Hybrid Journal   (Followers: 43, SJR: 1.04, CiteScore: 3)
Advances in Therapy     Hybrid Journal   (Followers: 5, SJR: 1.075, CiteScore: 3)
Aegean Review of the Law of the Sea and Maritime Law     Hybrid Journal   (Followers: 6)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2, SJR: 0.517, CiteScore: 1)
Aerobiologia     Hybrid Journal   (Followers: 3, SJR: 0.673, CiteScore: 2)
Aesthetic Plastic Surgery     Hybrid Journal   (Followers: 9, SJR: 0.825, CiteScore: 1)
African Archaeological Review     Hybrid Journal   (Followers: 16, SJR: 0.862, CiteScore: 1)
Afrika Matematika     Hybrid Journal   (Followers: 1, SJR: 0.235, CiteScore: 0)
AGE     Hybrid Journal   (Followers: 7)
Ageing Intl.     Hybrid Journal   (Followers: 7, SJR: 0.39, CiteScore: 1)
Aggiornamenti CIO     Hybrid Journal   (Followers: 1)
Aging Clinical and Experimental Research     Hybrid Journal   (Followers: 3, SJR: 0.67, CiteScore: 2)
Agricultural Research     Hybrid Journal   (Followers: 4, SJR: 0.276, CiteScore: 1)
Agriculture and Human Values     Hybrid Journal   (Followers: 14, SJR: 1.173, CiteScore: 3)
Agroforestry Systems     Hybrid Journal   (Followers: 19, SJR: 0.663, CiteScore: 1)
Agronomy for Sustainable Development     Hybrid Journal   (Followers: 12, SJR: 1.864, CiteScore: 6)
AI & Society     Hybrid Journal   (Followers: 8, SJR: 0.227, CiteScore: 1)
AIDS and Behavior     Hybrid Journal   (Followers: 14, SJR: 1.792, CiteScore: 3)
Air Quality, Atmosphere & Health     Hybrid Journal   (Followers: 4, SJR: 0.862, CiteScore: 3)
Akupunktur & Aurikulomedizin     Full-text available via subscription   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 5, SJR: 0.531, CiteScore: 0)
Algebra Universalis     Hybrid Journal   (Followers: 2, SJR: 0.583, CiteScore: 1)
Algebras and Representation Theory     Hybrid Journal   (Followers: 1, SJR: 1.095, CiteScore: 1)
Algorithmica     Hybrid Journal   (Followers: 9, SJR: 0.56, CiteScore: 1)
Allergo J.     Full-text available via subscription   (Followers: 1, SJR: 0.234, CiteScore: 0)
Allergo J. Intl.     Hybrid Journal   (Followers: 2)
Alpine Botany     Hybrid Journal   (Followers: 5, SJR: 1.11, CiteScore: 3)
ALTEX : Alternatives to Animal Experimentation     Open Access   (Followers: 3)
AMBIO     Hybrid Journal   (Followers: 11, SJR: 1.569, CiteScore: 4)
American J. of Cardiovascular Drugs     Hybrid Journal   (Followers: 16, SJR: 0.951, CiteScore: 3)
American J. of Community Psychology     Hybrid Journal   (Followers: 28, SJR: 1.329, CiteScore: 2)
American J. of Criminal Justice     Hybrid Journal   (Followers: 8, SJR: 0.772, CiteScore: 1)
American J. of Cultural Sociology     Hybrid Journal   (Followers: 15, SJR: 0.46, CiteScore: 1)
American J. of Dance Therapy     Hybrid Journal   (Followers: 4, SJR: 0.181, CiteScore: 0)
American J. of Potato Research     Hybrid Journal   (Followers: 2, SJR: 0.611, CiteScore: 1)
American J. of Psychoanalysis     Hybrid Journal   (Followers: 21, SJR: 0.314, CiteScore: 0)
American Sociologist     Hybrid Journal   (Followers: 12, SJR: 0.35, CiteScore: 0)
Amino Acids     Hybrid Journal   (Followers: 8, SJR: 1.135, CiteScore: 3)
AMS Review     Partially Free   (Followers: 4)
Analog Integrated Circuits and Signal Processing     Hybrid Journal   (Followers: 7, SJR: 0.211, CiteScore: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 5, SJR: 0.536, CiteScore: 1)
Analysis in Theory and Applications     Hybrid Journal   (Followers: 1)
Analysis of Verbal Behavior     Hybrid Journal   (Followers: 5)
Analytical and Bioanalytical Chemistry     Hybrid Journal   (Followers: 32, SJR: 0.978, CiteScore: 3)
Anatomical Science Intl.     Hybrid Journal   (Followers: 2, SJR: 0.367, CiteScore: 1)
Angewandte Schmerztherapie und Palliativmedizin     Hybrid Journal  
Angiogenesis     Hybrid Journal   (Followers: 3, SJR: 2.177, CiteScore: 5)
Animal Cognition     Hybrid Journal   (Followers: 19, SJR: 1.389, CiteScore: 3)
Annales françaises de médecine d'urgence     Hybrid Journal   (Followers: 1, SJR: 0.192, CiteScore: 0)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3, SJR: 1.097, CiteScore: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4, SJR: 0.438, CiteScore: 0)
Annali dell'Universita di Ferrara     Hybrid Journal   (SJR: 0.429, CiteScore: 0)
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1, SJR: 1.197, CiteScore: 1)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 18, SJR: 1.042, CiteScore: 3)
Annals of Combinatorics     Hybrid Journal   (Followers: 4, SJR: 0.932, CiteScore: 1)
Annals of Data Science     Hybrid Journal   (Followers: 11)
Annals of Dyslexia     Hybrid Journal   (Followers: 10, SJR: 0.85, CiteScore: 2)
Annals of Finance     Hybrid Journal   (Followers: 30, SJR: 0.579, CiteScore: 1)
Annals of Forest Science     Hybrid Journal   (Followers: 7, SJR: 0.986, CiteScore: 2)
Annals of Global Analysis and Geometry     Hybrid Journal   (Followers: 1, SJR: 1.228, CiteScore: 1)
Annals of Hematology     Hybrid Journal   (Followers: 16, SJR: 1.043, CiteScore: 2)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 12, SJR: 0.413, CiteScore: 1)
Annals of Microbiology     Hybrid Journal   (Followers: 10, SJR: 0.479, CiteScore: 2)
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 4, SJR: 0.687, CiteScore: 2)
Annals of Operations Research     Hybrid Journal   (Followers: 10, SJR: 0.943, CiteScore: 2)
Annals of Ophthalmology     Hybrid Journal   (Followers: 11)
Annals of Regional Science     Hybrid Journal   (Followers: 7, SJR: 0.614, CiteScore: 1)
Annals of Software Engineering     Hybrid Journal   (Followers: 13)
Annals of Solid and Structural Mechanics     Hybrid Journal   (Followers: 9, SJR: 0.239, CiteScore: 1)
Annals of Surgical Oncology     Hybrid Journal   (Followers: 14, SJR: 1.986, CiteScore: 4)
Annals of Telecommunications     Hybrid Journal   (Followers: 9, SJR: 0.223, CiteScore: 1)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1, SJR: 1.495, CiteScore: 1)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5, SJR: 0.834, CiteScore: 2)
Apidologie     Hybrid Journal   (Followers: 4, SJR: 1.22, CiteScore: 3)
APOPTOSIS     Hybrid Journal   (Followers: 8, SJR: 1.424, CiteScore: 4)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2, SJR: 0.294, CiteScore: 1)
Applications of Mathematics     Hybrid Journal   (Followers: 2, SJR: 0.602, CiteScore: 1)
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 43, SJR: 0.571, CiteScore: 2)
Applied Biochemistry and Microbiology     Hybrid Journal   (Followers: 17, SJR: 0.21, CiteScore: 1)
Applied Cancer Research     Open Access  
Applied Categorical Structures     Hybrid Journal   (Followers: 2, SJR: 0.49, CiteScore: 0)
Applied Composite Materials     Hybrid Journal   (Followers: 49, SJR: 0.58, CiteScore: 2)
Applied Entomology and Zoology     Partially Free   (Followers: 3, SJR: 0.422, CiteScore: 1)
Applied Geomatics     Hybrid Journal   (Followers: 3, SJR: 0.733, CiteScore: 3)
Applied Geophysics     Hybrid Journal   (Followers: 8, SJR: 0.488, CiteScore: 1)
Applied Intelligence     Hybrid Journal   (Followers: 12, SJR: 0.6, CiteScore: 2)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4, SJR: 0.319, CiteScore: 1)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 6, SJR: 0.886, CiteScore: 1)
Applied Mathematics - A J. of Chinese Universities     Hybrid Journal   (SJR: 0.17, CiteScore: 0)
Applied Mathematics and Mechanics     Hybrid Journal   (Followers: 5, SJR: 0.461, CiteScore: 1)
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 63, SJR: 1.182, CiteScore: 4)
Applied Physics A     Hybrid Journal   (Followers: 9, SJR: 0.481, CiteScore: 2)
Applied Physics B: Lasers and Optics     Hybrid Journal   (Followers: 24, SJR: 0.74, CiteScore: 2)
Applied Psychophysiology and Biofeedback     Hybrid Journal   (Followers: 8, SJR: 0.519, CiteScore: 2)
Applied Research in Quality of Life     Hybrid Journal   (Followers: 12, SJR: 0.316, CiteScore: 1)
Applied Solar Energy     Hybrid Journal   (Followers: 18, SJR: 0.225, CiteScore: 0)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4, SJR: 0.542, CiteScore: 1)
Aquaculture Intl.     Hybrid Journal   (Followers: 22, SJR: 0.591, CiteScore: 2)
Aquarium Sciences and Conservation     Hybrid Journal   (Followers: 1)
Aquatic Ecology     Hybrid Journal   (Followers: 33, SJR: 0.656, CiteScore: 2)
Aquatic Geochemistry     Hybrid Journal   (Followers: 4, SJR: 0.591, CiteScore: 1)
Aquatic Sciences     Hybrid Journal   (Followers: 13, SJR: 1.109, CiteScore: 3)
Arabian J. for Science and Engineering     Hybrid Journal   (Followers: 5, SJR: 0.303, CiteScore: 1)
Arabian J. of Geosciences     Hybrid Journal   (Followers: 2, SJR: 0.319, CiteScore: 1)
Archaeological and Anthropological Sciences     Hybrid Journal   (Followers: 20, SJR: 1.052, CiteScore: 2)
Archaeologies     Hybrid Journal   (Followers: 12, SJR: 0.224, CiteScore: 0)
Archiv der Mathematik     Hybrid Journal   (Followers: 1, SJR: 0.725, CiteScore: 1)
Archival Science     Hybrid Journal   (Followers: 59, SJR: 0.745, CiteScore: 2)
Archive for History of Exact Sciences     Hybrid Journal   (Followers: 8, SJR: 0.186, CiteScore: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 2, SJR: 0.909, CiteScore: 1)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (SJR: 3.93, CiteScore: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 5, SJR: 0.79, CiteScore: 2)
Archives and Museum Informatics     Hybrid Journal   (Followers: 146, SJR: 0.101, CiteScore: 0)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5, SJR: 1.41, CiteScore: 5)
Archives of Dermatological Research     Hybrid Journal   (Followers: 7, SJR: 1.006, CiteScore: 2)
Archives of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 14, SJR: 0.773, CiteScore: 2)
Archives of Gynecology and Obstetrics     Hybrid Journal   (Followers: 16, SJR: 0.956, CiteScore: 2)
Archives of Microbiology     Hybrid Journal   (Followers: 8, SJR: 0.644, CiteScore: 2)
Archives of Orthopaedic and Trauma Surgery     Hybrid Journal   (Followers: 8, SJR: 1.146, CiteScore: 2)
Archives of Osteoporosis     Hybrid Journal   (Followers: 2, SJR: 0.71, CiteScore: 2)
Archives of Sexual Behavior     Hybrid Journal   (Followers: 10, SJR: 1.493, CiteScore: 3)
Archives of Toxicology     Hybrid Journal   (Followers: 17, SJR: 1.541, CiteScore: 5)
Archives of Virology     Hybrid Journal   (Followers: 5, SJR: 0.973, CiteScore: 2)
Archives of Women's Mental Health     Hybrid Journal   (Followers: 14, SJR: 1.274, CiteScore: 3)
Archivio di Ortopedia e Reumatologia     Hybrid Journal  
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2, SJR: 0.946, CiteScore: 3)
ArgoSpine News & J.     Hybrid Journal  
Argumentation     Hybrid Journal   (Followers: 5, SJR: 0.349, CiteScore: 1)
Arid Ecosystems     Hybrid Journal   (Followers: 2, SJR: 0.2, CiteScore: 0)
Arkiv för Matematik     Hybrid Journal   (Followers: 1, SJR: 0.766, CiteScore: 1)
Arnold Mathematical J.     Hybrid Journal   (Followers: 1, SJR: 0.355, CiteScore: 0)
Arthropod-Plant Interactions     Hybrid Journal   (Followers: 2, SJR: 0.839, CiteScore: 2)
Arthroskopie     Hybrid Journal   (Followers: 1, SJR: 0.131, CiteScore: 0)
Artificial Intelligence and Law     Hybrid Journal   (Followers: 11, SJR: 0.937, CiteScore: 2)
Artificial Intelligence Review     Hybrid Journal   (Followers: 14, SJR: 0.833, CiteScore: 4)
Artificial Life and Robotics     Hybrid Journal   (Followers: 9, SJR: 0.226, CiteScore: 0)
Asia Europe J.     Hybrid Journal   (Followers: 5, SJR: 0.504, CiteScore: 1)
Asia Pacific Education Review     Hybrid Journal   (Followers: 12, SJR: 0.479, CiteScore: 1)
Asia Pacific J. of Management     Hybrid Journal   (Followers: 16, SJR: 1.185, CiteScore: 2)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 12, SJR: 0.353, CiteScore: 1)
Asia-Pacific Financial Markets     Hybrid Journal   (Followers: 2, SJR: 0.187, CiteScore: 0)
Asia-Pacific J. of Atmospheric Sciences     Hybrid Journal   (Followers: 19, SJR: 0.855, CiteScore: 1)
Asian Business & Management     Hybrid Journal   (Followers: 9, SJR: 0.378, CiteScore: 1)
Asian J. of Business Ethics     Hybrid Journal   (Followers: 9)
Asian J. of Criminology     Hybrid Journal   (Followers: 5, SJR: 0.543, CiteScore: 1)
AStA Advances in Statistical Analysis     Hybrid Journal   (Followers: 2, SJR: 0.548, CiteScore: 1)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 5, SJR: 0.183, CiteScore: 0)
ästhetische dermatologie & kosmetologie     Full-text available via subscription  

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Journal Cover
Apidologie
Journal Prestige (SJR): 1.22
Citation Impact (citeScore): 3
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0044-8435 - ISSN (Online) 1297-9678
Published by Springer-Verlag Homepage  [2350 journals]
  • Correction to: Heritabilities and genetic correlations for honey yield,
           gentleness, calmness and swarming behaviour in Austrian honey bees
    • Authors: Evert W. Brascamp; Alfons Willam; Christian Boigenzahn; Piter Bijma; Roel F. Veerkamp
      Abstract: In the paper, we computed the phenotypic variances of traits ignoring that the worker effect is in fact the colony mean, which has consequences for the estimates of heritabilities.
      PubDate: 2018-05-28
      DOI: 10.1007/s13592-018-0573-3
       
  • Soil textures of nest partitions made by the mason bees Osmia lignaria and
           O. cornifrons (Hymenoptera: Megachilidae)
    • Authors: Mario S. Pinilla-Gallego; James Crum; Randall Schaetzl; Rufus Isaacs
      Abstract: Osmia lignaria and O. cornifrons require mineral soil to build partitions between cells in their nests. We examined the textures of soil collected by these bees, using laser particle size analysis. For both species, soil in the nest was generally loam or sandy loam in texture, although individual partitions had wide variation in particle size. Partitions in O. cornifrons nests had 5.8% higher clay content than those in O. lignaria nests. Textural trends were similar when data from individual partitions were analyzed. For both species, we found no significant effect of nearby soil texture or the position of the partition in the nest, on the texture of individual partitions. Observations of partitions indicate that some females collect soil material from different locations to build one single partition. These results shed new light on the ecology of soil used by cavity nesting mason bees, with implications for their management as alternative pollinators.
      PubDate: 2018-05-01
      DOI: 10.1007/s13592-018-0574-2
       
  • Repetitive DNAs in Melipona scutellaris (Hymenoptera: Apidae:
           Meliponidae): chromosomal distribution and test of multiple
           heterochromatin amplification in the genus
    • Authors: Mariani Cristina Alves Piccoli; Vanessa Bellini Bardella; Diogo Cavalcanti Cabral-de-Mello
      Abstract: Melipona bees are remarkable due to the high contrast in heterochromatin amounts, making this group interesting for studying repetitive DNA amplification. Here, we performed the first efforts for the chromosomal localization of different repetitive DNAs in M. (Michmelia) scutellaris and tested for unique or multiple heterochromatin amplification in Melipona subgenera. Our data revealed enrichment of repetitive DNAs in chromosomal heterochromatic arms demonstrated by C 0 t-DNA and DOP-PCR probe hybridization, although microsatellites and multigene families were located at terminal euchromatic regions. Analysis using C 0 t-DNA probe from M. scutellaris showed positive hybridization only in Michmelia species, suggesting monophyletic amplification and sharing of heterochromatin sequences between species. However, the subgenus Melikerria, with a high amount of heterochromatin, probably underwent independent heterochromatin amplification or experienced sequence modification.
      PubDate: 2018-05-01
      DOI: 10.1007/s13592-018-0577-z
       
  • Species delimitation and sex associations in the bee genus Thygater , with
           the aid of molecular data, and the description of a new species
    • Authors: Felipe Vieira Freitas; José Eustáquio Santos Júnior; Fabrício Rodrigues Santos; Fernando A. Silveira
      Abstract: Thygater Holmberg 1884, a Neotropical bee genus included in the tribe Eucerini, is distributed from Argentina to Mexico, was last revised almost 50 years ago, and included 30 species. Significant problems in Thygater taxonomy are like those found in other bee taxa: sexual dimorphism (sometimes accentuated); large intraspecific variation in some taxa, especially in color patterns; great similarity among putative recently-diverging species; and scarcity of specimens for study of several apparently rare species. These problems hinder the correct delimitation of species boundaries and could result in an underestimated number of species and incorrect association of sexes. In this taxonomic and phylogenetic study of the genus, morphological and molecular evidence are considered together to elucidate the taxonomy of several Brazilian species of Thygater. The analyses allowed the description of two new species (one already described and other described here), additional support for the synonyms proposed elsewhere and sex associations for several species.
      PubDate: 2018-05-01
      DOI: 10.1007/s13592-018-0576-0
       
  • Isolation and identification of Lactobacillus bacteria found in the
           gastrointestinal tract of the dwarf honey bee, Apis florea Fabricius, 1973
           (Hymenoptera: Apidae)
    • Authors: Shabnam Parichehreh; Gholamhosein Tahmasbi; Alimorad Sarafrazi; Sohrab Imani; Naser Tajabadi
      Abstract: Recent research in bacteria-insect symbiosis has shown that lactic acid bacteria (LAB) establish symbiotic relationships with several Apis species. The current study was carried out to isolate and identify Lactobacillus bacteria housed in the gastrointestinal tract of the Asian dwarf honey bee (Apis florea), which is distributed in different regions of Iran. The current study was performed using 100 Gram-stained isolates, which were tested for catalase activity. Bacterial universal primers were used to amplify 16S rDNA genes isolated from bacterial colonies. Sequencing was done for 16S rDNA genes isolated from 43 bacteria. The phylogenetic analyses demonstrated that Lactobacillus flora found in the gastrointestinal tract of A. florea encompassed eight different phenotypes classified as three different species: L. kunkeei, L. plantarum, and L. apis. According to the specific association between bacteria and A. florea, we classified the Apis populations into three zones. Furthermore, the association of L. plantarum with insects foraging in citrus orchards might be explained by differences in nectar and pollen components resulting in the growth of different species of bacteria.
      PubDate: 2018-04-05
      DOI: 10.1007/s13592-018-0569-z
       
  • No evidence for an inbreeding avoidance system in the bumble bee Bombus
           terrestris
    • Authors: Gherardo Bogo; Natasha de Manincor; Alessandro Fisogni; Marta Galloni; Laura Zavatta; Laura Bortolotti
      Abstract: Inbreeding is caused by the mating of closely related individuals and may produce a decrease in the fitness of offspring and have deleterious consequences for adults. In haplodiploid social Hymenoptera inbreeding has a further negative effect due to the production of unviable or sterile diploid males. As a consequence, mechanisms of inbreeding avoidance would be expected to evolve. In this study, we investigated the mating choice between related (inbred) or unrelated (outbred) gynes and males of Bombus terrestris reared in laboratory conditions by performing cage and tunnel experiments. Not only did we find no mating preference for related or unrelated partners (mating success 41.55 ± 3.7 and 39.69 ± 4.4%, respectively), but the mating latency was even shorter in inbred (6.97 ± 0.6 min) than in outbred matings (8.74 ± 0.8 min). We hypothesize that in wild populations of B. terrestris, the lack of incest avoidance could be compensated by tolerance of high levels of inbreeding.
      PubDate: 2018-04-04
      DOI: 10.1007/s13592-018-0575-1
       
  • A scientific note on improved isolation methods for Melissococcus
           plutonius from diseased Apis mellifera larvae
    • Authors: Yuka Nakai; Michika Ishihara; Rie Arai; Daisuke Takamatsu
      PubDate: 2018-04-03
      DOI: 10.1007/s13592-018-0572-4
       
  • Co-occurrence of RNA viruses in Tasmanian-introduced bumble bees ( Bombus
           terrestris ) and honey bees ( Apis mellifera )
    • Authors: Elisabeth Fung; Kelly Hill; Katja Hogendoorn; Andrew B. Hingston; Richard V. Glatz
      Abstract: A number of bee RNA viruses, including Deformed wing virus (DWV), are so far unreported from Australia. These viruses can be introduced together with imported live honey bees (Apis mellifera) and their products, with other bee species, and bee parasites. Given that bee viruses have a profound impact on bee health, it is surprising that since the introduction of bumble bees (Bombus terrestris) onto Tasmania in 1992 from New Zealand, no work has been done to investigate which RNA viruses are associated with these bees. Consequently, we investigate the current prevalence of RNA viruses in B. terrestris and A. mellifera collected in south-eastern Tasmania. We did not find DWV in either A. mellifera and B. terrestris. However, both bee species shared Kashmir bee virus (KBV) and Sacbrood virus (SBV), but Black queen cell virus (BQCV) was detected only in A. mellifera. This reinforces the importance of ongoing strong regulation of the anthropogenic movement of live bees and their products.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0549-8
       
  • Reproduction of rebel workers in honeybee ( Apis mellifera ) colonies
    • Authors: Karolina Kuszewska; Agnieszka Wącławska; Michal Woyciechowski
      Abstract: The honeybee is one of several eusocial species in which the queen is typically the only reproductive member of the colony; worker reproduction is mostly restricted to queenless colonies. Because workers cannot mate, they lay unfertilized eggs, which develop into males. A recent study showed that in queenless colonies, which arise after swarming, worker larvae develop into rebel workers that have greater reproductive potential than do workers reared in queenright colonies, as measured by the number of ovarioles and degree of ovary activation. However, there was no evidence that rebels had an opportunity to produce male offspring. Here, we show for the first time that rebel workers not only activate their ovaries but also produce significantly more male offspring in queenright colonies than do normal workers. Moreover, our results show that the level of rebel reproduction in queenright colonies is similar to the reproduction of normal workers in queenless colonies. This finding suggests that the ultimate factor favouring the evolution of the rebel strategy is the decrease in relatedness between the old-generation workers and the new queen’s offspring that occurs after queen exchange at swarming.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0537-z
       
  • Effect of pollen traps on the relapse of chronic bee paralysis virus in
           honeybee ( Apis mellifera ) colonies
    • Authors: Eric Dubois; Caroline Reis; Frank Schurr; Nicolas Cougoule; Magali Ribière-Chabert
      Abstract: Pollen traps are used by beekeepers to collect pollen harvested by honeybees. Here, we set up an experiment to evaluate whether pollen traps are a risk factor involved in the development of the chronic bee paralysis, a viral honeybee disease affecting adult bees and transmitted by contact. After a recent episode of chronic bee paralysis in an apiary, pollen traps were installed on three hives while two hives without pollen traps were used as control. During the experiment, the chronic bee paralysis virus (CBPV) loads in foragers from the control hives remained lower than 108 equivalent copies of CBPV genome per bee but were higher than 1010 equivalent copies of CBPV genome per bee in the many symptomatic bees and in the hundreds of dead bees found in front of trap hives. Clinical signs of the disease persisted for 3 weeks at the entrance of the trap hives. These signs disappeared after the pollen traps were removed, accompanied by a decrease in the viral loads in foragers. Despite the small number of colonies examined, the results of this study suggest the impact of pollen traps on the relapse of chronic paralysis outbreaks in colonies infected by CBPV.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0547-x
       
  • A scientific note on first detection of Kashmir bee virus in Apis
           mellifera (Hymenoptera: Apidae) in South America
    • Authors: Gustavo Riveros; Nolberto Arismendi; Nelson Zapata; Guy Smagghe; Marta Rodríguez; Marcos Gerding; Marisol Vargas
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0545-z
       
  • Morphological similarity of widely separated populations of two Euglossini
           (Hymenoptera; Apidae) species based on geometric morphometrics of wings
    • Authors: Marina Lopes Grassi-Sella; Carlos Alberto Garófalo; Tiago Mauricio Francoy
      Abstract: Euglossini bees are able to fly long distances, which could help to maintain gene flow among widely separated populations. In order to investigate if different environmental conditions affect morphological variation in Euglossa annectans and Euglossa truncata, we analyzed the patterns of venation of the forewings of 310 individuals, sampled in the same six locations for the two species. Populations from the two species clustered in a similar way, following the phytophysiognomy of the sampling sites. These populations also presented little or no population structure. Based on our results, we suggest that the forest fragmentation is not a problem for these species. The tendency of samples to group based on site phytophysiognomy can be explained by phenotypic plasticity or local adaptations.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0536-0
       
  • Effect of the own colony odor on olfactory and thermal preferences of the
           honeybee (Apis mellifera) workers
    • Authors: Przemysław Grodzicki; Michał Caputa; Bartosz Piechowicz
      Abstract: Honeybee foragers were tested on their preference for the own colony odor either separately, in an olfactometer, or in combination with their temperature preference, in thermal gradient chambers, where their motor activity was also recorded. The bees in the gradient chambers were either deprived of their colony odor for 9 days or exposed to the odor during the experimental days 4–9. The source of odor was wax from the own colony. Bees were attracted by the odor, and this attraction culminated at night. Thermal preference and motor activity fluctuated in a circadian rhythm both in absence and in combination with the own colony odor but there was an upward drift of both variables in bees deprived of the odor. The data are discussed on the background of detrimental effects of isolation from the own colony odor possibly indicating an age related phenomenon.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0543-1
       
  • Casteless behaviour in social groups of the bee Exoneurella eremophila
    • Authors: Rebecca Dew; Simon Tierney; Michael Gardner; Michael Schwarz
      Abstract: The comparison of social systems, particularly in closely related taxa, can be highly valuable to the understanding of social evolution. While much research has focused on the formation of hierarchies and eusocial organisation, it needs to be remembered that not all social systems are necessarily based on hierarchies. The allodapine bee Exoneurella tridentata is the only eusocial species within the entire subfamily Xylocopinae (Apidae) with discrete queen and worker morphology. Here, we show that a non-eusocial congener, Exoneurella eremophila, is casteless. Nest collection and dissection data show no evidence of hierarchies, and there were no per capita benefits to group nesting in terms of brood production in any collection period. The casteless behaviour exhibited by E. eremophila appears to be common among very diverse lineages of the bee tribe Allodapini, and as such represents an evolutionarily persistent behavioural strategy. We discuss likely ecological factors that may have driven the evolution of species lacking castes and a species with morphologically distinct castes from within a small monophyletic group—genus Exoneurella.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0550-2
       
  • Characterization of cuticular hydrocarbons according to colony duties in
           the stingless bee Tetragonisca angustula
    • Authors: María Sol Balbuena; Andrés González; Walter M. Farina
      Abstract: In social insects, task-related recognition plays an important role in the coordination and cohesion between members of the colony. Tetragonisca angustula is an eusocial stingless bee that presents a sophisticated system of defense involving two complementary groups of guards: hovering and standing guards. We identified, quantified, and compared the cuticular compounds of worker bees captured within the nest, and bees performing tasks outside: foragers and guards. In addition to cuticular hydrocarbons (CHCs), we identified abundant di- and triterpenes. Among the CHCs, we found a mixture of n-alkanes, methyl-branched alkanes, alkenes, and alkadienes. Significant differences in the relative abundance of CHCs between behavioral groups were found. Particularly, guards present high amounts of branched alkanes relative to nest bees and foragers. Differential CHC profiles associated with behavioral groups could imply a mechanism for caste recognition.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0539-x
       
  • Effects of neonicotinoid exposure on molecular and physiological
           indicators of honey bee immunocompetence
    • Authors: Elizabeth J. Collison; Heather Hird; Charles R. Tyler; James E. Cresswell
      Abstract: Bee declines have been associated with various stressors including pesticides and pathogens. We separately exposed immune-challenged adult worker honey bees (Apis mellifera L.) to two neonicotinoid pesticides, thiamethoxam (10 ppb) and imidacloprid (102 ppb), by dietary delivery. We found that whereas neonicotinoid exposure weakly affected transcriptional responses of antimicrobial genes, it did not detectably affect the physiological antimicrobial response as measured by a lytic clearance assay of haemolymph. Our findings add to the evidence that transcriptional responses in immune-related genes are not yet reliable indicators of pesticide impacts on bee health, which suggests caution in their future use as biomarkers in pesticide risk assessment.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0541-3
       
  • Upregulation of antioxidant genes in the spermathecae of honey bee ( Apis
           mellifera ) queens after mating
    • Authors: Alejandra N. Gonzalez; Nancy Ing; Juliana Rangel
      Abstract: During storage, the viability of sperm in a honey bee (Apis mellifera) queen’s spermatheca can be decreased by reactive oxygen species. We hypothesized that the expression of antioxidant genes would increase in queen spermathecae after mating. We measured queen morphometric characteristics and expression levels of seven antioxidant-encoding genes in virgin and mated queen spermathecae. We identified a 12% increase in body weight and a fourfold increase in ovary weight in mated queens. There was a twofold higher expression of catalase, thioredoxin 2, and thioredoxin reductase 1 in the spermathecae of mated vs. virgin queens. Expression of the other antioxidant genes (glutathione S-transferase D1, superoxide dismutase 1, vitellogenin, and glyoxalase domain-containing 4-like (GLOD4L) in spermathecae was not different between mated and virgin queens. In drone semen, expression of antioxidant genes was overall low compared to queens except for GLOD4L, which was equivalent to that in queen spermathecae. Increased expression of antioxidant genes may assist in maintaining sperm viability inside the spermathecae of mated queens.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0546-y
       
  • The impact of winter feed type on intestinal microbiota and parasites in
           honey bees
    • Authors: Paul D’Alvise; Franziska Böhme; Marius Cosmin Codrea; Alexander Seitz; Sven Nahnsen; Mieke Binzer; Peter Rosenkranz; Martin Hasselmann
      Abstract: The intestinal microbiota of honey bees consists of only few bacterial species and may have effects on health and pathogen resilience. Honey is usually harvested and replaced by sugar syrup. We hypothesized that replacing honey may change the composition of the intestinal microbiota, and therefore compromise pathogen resilience. Fifteen colonies were fed with wheat starch syrup, sucrose syrup, or blossom honey. 16S-based bacterial community analysis was performed on three individuals per hive in summer and winter, and Nosema ceranae and Crithidia/Lotmaria levels were assessed by qPCR. Seasonal differences in the intestinal microbiota and N. ceranae were found; however, microbiota and parasite levels were very similar between the feed types. Rhizobiales and Bifidobacteria were found to be increased in the bees that had received honey or wheat starch syrup, as compared to sucrose syrup. In conclusion, intestinal microbiota and parasites were found to be largely unaffected by the winter feed type.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0551-1
       
  • Constant flower damage caused by a common stingless bee puts survival of a
           threatened buzz-pollinated species at risk
    • Authors: Juliana Ordones Rego; Reisla Oliveira; Claudia Maria Jacobi; Clemens Schlindwein
      Abstract: Illegitimate flower visitors may reduce the reproductive success of their host plants. Eriocnema fulva, a threatened Melastomataceae of the Atlantic Forest, Brazil, has pollen flowers with poricidal anthers that show frequent damage of floral parts. We identified the flower-damaging bees and determined their impact on fruit set. Bees of seven species visited their flowers, but only three species collected pollen by vibration. With only one visit to a flower patch per 12 h, the frequency of effective buzz pollinating bees was negligible, while flower-damaging workers of the stingless bee Trigona fulviventris (Apidae) accounted for 70% of the visits. During their lengthy visits, they cut anthers to access pollen, and often styles as well. We conclude that the direct negative consequence of flower damage by Trigona bees, as well as their indirect impact by making the flowers unattractive for effective pollinators is a major reason for the low fruit set (6.9%) of E. fulva. Considering the rareness of the plant species, these negative effects put the survival of E. fulva at risk.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0552-0
       
  • Computer software for identification of honey bee subspecies and
           evolutionary lineages
    • Authors: Anna Nawrocka; İrfan Kandemir; Stefan Fuchs; Adam Tofilski
      Abstract: Within the western honey bee (Apis mellifera), there are more than 20 recognised subspecies. It is well known that these subspecies differ in their wing venation patterns. However, there is a demand for efficient tools to identify honey bee subspecies, ecotypes, populations or hybrids. The aim of this study was to develop a fast and easy identification method based on analysing forewing vein patterns of honey bees by geometric morphometrics. Reference samples for the subspecies were obtained from the Morphometric Bee Data Bank in Oberursel, Germany. These contained 187 honey bee colonies allocated into 25 subspecies from four evolutionary lineages. The identification of evolutionary lineages of honey bees based on forewing venations proved to be highly reliable, which confirms earlier studies. The accuracy of honey bee subspecies identification was less consistent and ranged from 100 to 50% and was particularly low in African honey bees. The obtained identification data were exported to the IdentiFly computer software, which is freely available.
      PubDate: 2018-04-01
      DOI: 10.1007/s13592-017-0538-y
       
 
 
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