Search Results - (Author, Cooperation:K. Hartfelder)
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1Latest Papers from Table of Contents or Articles in PressK. M. Kapheim ; H. Pan ; C. Li ; S. L. Salzberg ; D. Puiu ; T. Magoc ; H. M. Robertson ; M. E. Hudson ; A. Venkat ; B. J. Fischman ; A. Hernandez ; M. Yandell ; D. Ence ; C. Holt ; G. D. Yocum ; W. P. Kemp ; J. Bosch ; R. M. Waterhouse ; E. M. Zdobnov ; E. Stolle ; F. B. Kraus ; S. Helbing ; R. F. Moritz ; K. M. Glastad ; B. G. Hunt ; M. A. Goodisman ; F. Hauser ; C. J. Grimmelikhuijzen ; D. G. Pinheiro ; F. M. Nunes ; M. P. Soares ; E. D. Tanaka ; Z. L. Simoes ; K. Hartfelder ; J. D. Evans ; S. M. Barribeau ; R. M. Johnson ; J. H. Massey ; B. R. Southey ; M. Hasselmann ; D. Hamacher ; M. Biewer ; C. F. Kent ; A. Zayed ; C. Blatti, 3rd ; S. Sinha ; J. S. Johnston ; S. J. Hanrahan ; S. D. Kocher ; J. Wang ; G. E. Robinson ; G. Zhang
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-05-16Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Amino-Acid N-Acetyltransferase ; Animals ; Bees/classification/*genetics ; DNA Transposable Elements ; *Evolution, Molecular ; Gene Expression Regulation ; Gene Regulatory Networks ; *Genetic Drift ; Genome, Insect/genetics ; Phylogeny ; Selection, Genetic ; *Social Behavior ; Transcription Factors/chemistry/genetics ; *TranscriptomePublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 0016-6480Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyMedicineType of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesStaff View
ISSN: 0022-1910Keywords: Apis mellifera ; Caste differentiation ; corpora allata activity ; in vitro juvenile hormone synthesisSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1432-1904Source: Springer Online Journal Archives 1860-2000Topics: BiologyChemistry and PharmacologyNatural Sciences in GeneralType of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1420-9098Keywords: Caste polymorphism ; morphometry ; allometry ; discriminant analysis ; stingless beesSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Summary Morphometric data obtained from natural andin vitro-rared queens, workers, and drones of the stingless bee.Scaptotrigona postica were subjected to allometric and multivariate tests to study sex- and caste-related growth patterns. As imaginai phenotype variation appears to be restricted in members of a normal colony, the inclusion ofin vitro-reared individuals permitted an analysis of a considerably wider size range for each morph, and proved important for the calculation of reliable regression statistics in the allometric analyses. Our results show that essentially no individuals with a mixture or transition of sex or caste traits are produced, and, consequently, that for most morphometric characters, queens, workers, and drones lie on different regression lines. Hence, workers cannot be considered as masculinized females, as has been suggested in studies based exclusively on multivariate analyses. Instead, the various morphs may result from a stepwise programming and reprogramming of a few growth rule parameters during critical stages of preimaginal development, and complex hypothetical shifts in the balance of maleness and femaleness genes need not be assumed. A multivariate discriminant analysis, on the other hand, proved to be an efficient tool for the selection of diagnostic size characters.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1420-9098Source: Springer Online Journal Archives 1860-2000Topics: BiologyDescription / Table of Contents: Zusammenfassung Die ausgewogene Zusammensetzung des Larvenfutters wird allgemein als ein wichtiger Faktor in der Kastenbildung der Honigbiene angesehen. Ob dies für Stachellose Bienen in ähnlicher Weise gilt, war eine offene Frage. Wir analysierten die wasserlöslichen Hauptkomponenten im Larvenfutter von 7 Meliponinen-Arten. Die Ergebnisse wurden herangezogen, um die Hypothese zu überprüfen, daß eine ausgewogene Zusammensetzung des Larvenfutters der Selektion unterliegt. Dazu wurden chemosystematische Bäume berechnet und mit einem bereits publizierten, strukturell-morphologisch begründeten Stammbaum verglichen. Ein beträchtlicher Grad an Kongruenz zwischen den chemosystematischen Bäumen für die allgemeine Zusammensetzung des Larvenfutters und dem Stammbaum erlaubte es, die Zusammensetzung des Larvenfutters hoch-eusozialer Bienen in Bezug auf die funktionalen Aspekte der Larvenernährung zu diskutieren.Notes: Summary Nutritional balance of larval food supposedly plays an important role in honey bee caste formation. Whether this is similar in stingless bees was an open question. We analysed the major water-soluble constituents in the larval food of 7 species of meliponids. The data were used to evaluate the hypothesis that a balanced composition of larval food is shaped by selection. Chemosystematic trees were calculated and compared to a published phylogenetic tree based on morphological characters. A considerable degree of congruence between the chemosystematic trees for the general composition of larval food and the phylogenetic tree allowed us to discuss the composition of larval food in highly eusocial bees in relation to functional aspects of larval nutrition.Type of Medium: Electronic ResourceURL: