Results 31 to 40 of about 15,123 (122)

Principais doenças das abelhas Apis em Portugal:

ACTA Apicola Brasilica, 2023
As abelhas são os polinizadores mais importantes do mundo. As ameaças à saúde das abelhas continuam a aumentar a nível mundial, contribuindo para a diminuição da sua produtividade. As abelhas são suscetíveis a uma enorme variedade de agentes patogénicos,
Cátia Andrea da Silva Martinho, Cristina da Conceição Soares Ferradeira, Joana Araújo Nobre Catita, Ana Isabel Faustino-Rocha   +3 more
doaj   +1 more source

Structural Colour in Bees (Hymenoptera: Anthophila) Is Linked to Climate and Latitude

Global Ecology and Biogeography, Volume 35, Issue 9, September 2026.
ABSTRACT Aim Environmental drivers frequently predict global patterns of colour diversity, but whether such patterns depend on the underlying colour mechanisms—pigments or microscopic structures—has scarcely been considered. Structural colour may have different functional properties that result in different associations with environmental variables ...
Patricia Henríquez‐Piskulich, Iliana Medina, Andrew F. Hugall, Fabian C. Salgado‐Roa, Katrina J. Rankin, Mark Elgar, Devi Stuart‐Fox   +6 more
wiley   +1 more source

Diversity of Mites Associated With Stingless Bees (Hymenoptera: Meliponini) in Forest Fragments in Brazil: Empirical Validation of an Efficient and Low‐Cost Sampling Method

Austral Entomology, Volume 65, Issue 3, August 2026.
ABSTRACT Despite the importance of understanding mite–bee interactions, standardized and noninvasive methods for sampling mite communities in stingless bee hives remain limited. This study aimed to evaluate a novel, low‐cost sampling technique using a custom‐built suction device, the Portable Mite Aspirator (PMA), for collecting mites from hives of ...
Éricles Charles da Silva Melo, Milena Emily da Silva Lima, Vinícius Borges da Silva, Airton Torres Carvalho, Simão Dias Vasconcelos   +4 more
wiley   +1 more source

Atividades de vôo de operárias de Melipona seminigra: abelhas sem ferrão da Amazônia

Bioscience Journal, 2007
Atividades externas de voo estao associadas a coleta de nectar, polen, resina e barro e transporte de lixo para fora da colonia. Informaçoes sobre esse trabalho das abelhas sem ferrao sao importantes para atender a programas de manejo de polinizadores ...
Gislene Almeida Carvalho-Zilse, Edson Luniere Porto Porto, Carlos Gustavo Nunes da Silva da Silva, Maria de Fátima Ferreira da Costa Pinto   +3 more
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Aging and Electrical Stability of DNTT Honey‐Gated OFETs

Advanced Electronic Materials, Volume 12, Issue 13, 6 July 2026.
DNTT honey‐gated organic transistors were fabricated and evaluated to assess short‐ and long‐term stability under electrical stress and aging. Short‐term transfer measurements (five days, 40 sweeps/day) showed minimal parameter shift, while extended measurements revealed gradual degradation over weeks.
Douglas H. Vieira, Ana C. de Paula, José D. F. Dias, Maria H. L. O. Fung, Rafael Furlan de Oliveira, Gabriel L. Nogueira, Keli F. Seidel, José P. M. Serbena, Neri Alves   +8 more
wiley   +1 more source

Como o comportamento das abelhas na flor do morangueiro (Fragaria ananassa Duchesne) influencia a formação dos frutos?

Bioscience Journal, 2007
Para avaliar o efeito do comportamento de três espécies de abelhas na polinização e produção de morangos, flores primárias dos cultivares Oso Grande (OS) e Sweet Charlie (SC) foram expostas a diferentes tratamentos de polinização: OS - uma e quatro ...
Kátia Sampaio Malagodi-Braga, Astrid de Matos Peixoto Kleinert   +1 more
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Características físico-químicas e atividade antimicrobiana de extratos de própolis da Paraíba, Brasil Physicochemical characteristics and antimicrobial activity of the extracts propolis of the Paraiba, Brazil

Ciência Rural, 2006
Objetivou-se com esta pesquisa analisar a própolis produzida por abelhas Apis mellifera L. no Estado da Paraíba, colhida pelo método de tela plástica, determinando-se a composição físico-química e a atividade antimicrobiana conforme o período de colheita
Rosilene Agra da Silva, Adriana Evangelista Rodrigues, Maria Cristina Marcucci Ribeiro, Ângela Ramalho Custódio, Norma Estefânia Domingues Andrade, Walter Esfraim Pereira   +5 more
doaj   +1 more source

Bee community assembly is regulated by functional traits in pristine tropical forest environments

Functional Ecology, Volume 40, Issue 7, Page 2102-2113, July 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding the drivers of bee beta diversity across pristine environments in the Amazon is critical for ensuring biodiversity conservation, restoration, sustainable land use planning and economic development.
Rafael Cabral Borges, Erlane José Cunha, Ulysses Madureira Maia, Lourival Tyski, José Eustáquio dos Santos Júnior, Carlos Eduardo Pinto, Markus Gastauer, Tereza Cristina Giannini   +7 more
wiley   +1 more source

Fluctuating asymmetry in spider‐hunting wasps as a possible indicator of stress in Brazilian Atlantic Forest landscapes Assimetria flutuante em vespas caçadoras de aranhas como possível indicador de estresse em paisagens da Mata Atlântica brasileira

Ecological Entomology, Volume 51, Issue 3, Page 558-569, June 2026.
Agricultural cover was positively associated with fluctuating asymmetry in Trypoxylon opacum, suggesting a possible increase in developmental instability in intensively managed landscapes. Wing size was positively related to forest cover and negatively related to agricultural cover, indicating that forested landscapes may promote larger body size ...
Luana Vieira Carlin dos Santos, Jean Pablo Alves de Deus, Milton Cezar Ribeiro, Maria Luisa Tunes Buschini   +3 more
wiley   +1 more source

Drone congregations in Meliponini: what do they tell us?

Bioscience Journal, 2007
At some point during their life, meliponine males leave their nests and form congregations which can be made up of tens up to several hundreds of individuals.
Marilda Cortopassi-Laurino
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