Results 51 to 60 of about 3,623 (162)

Honey Bees of Santa Catarina, Brazil, have only African mitochondrial DNA

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2012
As diferenças entre a subspécie de abelha africana (Apis mellifera scutellata) e as subspécies europeias (Apis mellifera mellifera e Apis mellifera ligustica) nos quesitos comportamento higiênico e agressividade são marcantes.
M. Lopes-da-Silva, M.A. Dalbó, T.P. Schfaschek, C.J. Arioli, L.C. Stefaniak   +4 more
doaj   +1 more source

Influência de abelhas africanizadas na concentração de açúcares no néctar de soja (Glycine max L. Merrill) var. Codetec 207 - doi: 10.4025/actascianimsci.v32i2.7930

Acta Scientiarum: Animal Sciences, 2010
O objetivo foi avaliar a concentração de açúcares no néctar de soja (Glycine max L. Merrill) em áreas com ou sem a presença de abelhas Apis mellifera L.
Eloi Machado Alves, Vagner de Alencar Arnaut de Toledo, Arildo José Braz de Oliveira, Maria Josiane Sereia, Carolina Antunes Neves, Maria Claudia Colla Ruvolo-Takasusuki   +5 more
doaj   +1 more source

Avaliação do desempenho de colônias de abelhas africanizadas e italianas híbridas

Agropecuária Catarinense, 1996
Este trabalho teve como objetivos: • Verificar a influência da raça de abelhas na capacidade de postura de rainhas africanizadas e italianas; • Verificar a capacidade de armazenamento de pólen e mel das colônias de abelhas africanizadas e italianas ...
Geraldo Moretto, Fernando Luis Cassini
doaj  

Ants on flowers: Protective ants impose a low but variable cost to pollination, moderated by location of extrafloral nectaries and type of flower visitor

Journal of Ecology, Volume 113, Issue 8, Page 2187-2198, August 2025.
Individuals who engage in multiple mutualisms often have to pay indirect costs because of the interference of one mutualism on another. We found that protective ants had a low but variable impact on pollination, especially on the flower visitation by bees and when EFNs are close to inflorescences.
Amanda Vieira da Silva, Anselmo Nogueira, Judith L. Bronstein, Pedro J. Rey, Laura Carolina Leal   +4 more
wiley   +1 more source

As abelhas Bombus como polinizadores agrícolas: perspectivas do uso de espécies nativas em cultivo protegido no Brasil

ACTA Apicola Brasilica, 2014
As abelhas Bombus são utilizadas na polinização agrícola em vários países do mundo, contribuindo para o incremento da produtividade de diversas culturas. Porém, a sua importância na agricultura é muito maior quando se trata de cultivo protegido.
M. O. Oliveira
doaj   +1 more source

A new species of Characidium (Characiformes: Crenuchidae) from the Iguaçu National Park, Rio Iguaçu basin, Paraná, Brazil

Journal of Fish Biology, Volume 107, Issue 2, Page 454-465, August 2025.
Abstract A new species of Characidium is described from the Iguaçu National Park, Brazil. The new species can be diagnosed from the congeners by the absence of conspicuous vertical bars, blotches and spots along the sides of the body, the presence of a scaled isthmus and adipose fin, a series of scales below lateral line and the presence of a thin dark
Bruno H. M. Stabile, Renan B. dos Reis, Alessandra V. de Oliveira, Weferson J. da Graça   +3 more
wiley   +1 more source

The University Sector Has Become More Application‐Oriented: Evidence From Course Descriptions Using Text Analysis for the Case of Higher Education in Denmark

Higher Education Quarterly, Volume 79, Issue 3, July 2025.
ABSTRACT In this article, we analyse changes in the language use to describe the content of higher education in Denmark between 2014 and 2021. Based on text analysis of course descriptions of every university course in Denmark, we show steady growth in the use of applied, practical and vocationally oriented terminology. This trend is not only driven by
Snorre Ralund, Felix Weiss
wiley   +1 more source

Phenotypic, Floristic, and Anthropogenic Drivers of the Pollen Niche of Amazonian Stingless Bees

Biotropica, Volume 57, Issue 3, May 2025.
The pollen diversity and composition collected by Amazonian stingless bees depend on their body mass, tree composition, and urbanization. Further, bees have been collecting fewer pollen types since the 1970s. ABSTRACT Stingless bees (Apidae: Meliponini) are major pollinators in the tropics, supporting key ecosystem services.
Daniel Bastos Pimenta, Pedro Aurélio Costa Lima Pequeno, Maria Lúcia Absy, André Rodrigo Rech   +3 more
wiley   +1 more source

Taxa de mortalidade do ácaro Varroa destructor de acordo com a quantidade de crias em colônias de abelhas africanizadas (Apis mellifera L.) - DOI: 10.4025/actascibiolsci.v29i3.487

Acta Scientiarum: Biological Sciences, 2007
O ácaro Varroa destructor tem causado a mortalidade de centenas de milhares de colônias de abelhas Apis mellifera em várias partes do mundo. Os efeitos determinados pelo ácaro Varroa variam com a subespécie de Apis mellifera.
Leandro Junkes, José Carlos Vieira Guerra Junior, Geraldo Moretto   +2 more
doaj   +1 more source

Host‐Cleptoparasite Biogeographical Congruence Through Time: The Case of Cuckoo Oil Bees

Journal of Biogeography, Volume 52, Issue 5, May 2025.
ABSTRACT Aim Insect brood parasites (i.e., cleptoparasites), like cuckoo bees, typically attack hosts within specific lineages, but seem to be less constrained by the biogeographical movements of their hosts compared to obligate parasites. Cuckoo bees depend on stable host populations, being particularly sensitive to environmental changes and thus ...
Aline C. Martins, Felipe V. Freitas, Léo C. Rocha‐Filho, Michael G. Branstetter, Antonio J. C. Aguiar, Eduardo A. B. Almeida, Thais Vasconcelos   +6 more
wiley   +1 more source