Results 41 to 50 of about 3,677 (183)

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

open access: yesBioscience 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   +3 more
doaj  

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

open access: yesEcological 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   +3 more
wiley   +1 more source

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

open access: yesBioscience 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   +1 more
doaj  

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

open access: yesCiência 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   +5 more
doaj   +1 more source

The Flooding Gradient Affects Seed Dispersal by Fruit‐Eating Fishes in Amazonian Whitewater Floodplain Forests

open access: yesBiotropica, Volume 58, Issue 3, May 2026.
This research approaches the interaction between frugivorous fish and the flooded forests in the central Amazon. We evaluated the fruit consumption by fish and the seed dispersal potential along the flood gradient. We tested the hypothesis that the role of fish as seed dispersers varies between low várzea (LV) and high várzea (HV) forests.
Gilvan Costa   +6 more
wiley   +1 more source

O "Ronco da Abelha"

open access: yesAnais do Museu Paulista: História e Cultura Material, 1978
Analysis of the insurrectional process know as “Ronco da Abelha”, which took place in northeastern Brazil in 1851/1852. In this rebellion, social and political factors were associated: opposition to the conservative Ministry by remaining groups of the “Revolução Praieira” (1848/50), and revolt of small farmers and day workers against the powerful ...
openaire   +2 more sources

Floral trait similarity at the community‐level increases reproductive success suggesting facilitation through pollinator sharing

open access: yesOikos, Volume 2026, Issue 4, April 2026.
The ability of plants to attract pollinators is context‐dependent, influenced by floral traits, abundance, and resources from the plant community. Indirect interactions through shared pollinators, from competition to facilitation, may lead to varied reproductive outputs in plants, and the mechanisms behind these interactions remain to be fully ...
Marsal D. De Amorim   +6 more
wiley   +1 more source

Drone congregations in Meliponini: what do they tell us?

open access: yesBioscience 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
doaj  

Cooperative human signals to honeyguides form local dialects

open access: yesPeople and Nature, Volume 8, Issue 3, Page 682-694, March 2026.
Abstract Human language enables the exchange of complex information and precise instructions for collaborative planning and action. It rapidly evolves through social learning, generating diverse cultural communication signals used not only with other humans, but also with domesticated animals bred or trained to respond.
Jessica E. M. van der Wal   +5 more
wiley   +1 more source

Primeiro registro de Eufriesea laniventris (Ducke, 1902) (Hymenoptera, Apidae, Euglossini) no Amazonas, Brasil First record of Eufriesea laniventris (Ducke, 1902) (Hymenoptera, Apidae, Euglossini) in the state of Amazonas, Brazil

open access: yesActa Amazonica, 2004
É registrada pela primeira vez a ocorrência de Eufriesea laniventris no Amazonas. No ano 2000, foram coletados seis exemplares na região de Manaus (2º 36' S e 60º 02' W) atraídos pelas substâncias odoríferas 1,8 cineol e salicilato de metila.The first ...
Eliana Fernandez Storti   +2 more
doaj   +1 more source

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