Results 51 to 60 of about 1,970 (204)

The orchid bees (Hymenoptera, Apidae, Euglossina) in a forest fragment from western Paraná state, Brazil

open access: yesPapéis Avulsos de Zoologia, 2014
An orchid bee inventory was carried out in Parque Estadual São Camilo, Palotina, Paraná (Brazil); conservation unit with about 400 hectares of Semidecidual Seasonal forest.
Rodrigo B. Gonçalves   +2 more
doaj   +1 more source

Can scalable design of wings for flapping wing micro air vehicle be inspired by natural flyers? [PDF]

open access: yes, 2018
Lift production is constantly a great challenge for flapping wing micro air vehicles (MAVs). Designing a workable wing, therefore, plays an essential role. Dimensional analysis is an effective and valuable tool in studying the biomechanics of flyers.
Chen, Yi   +4 more
core   +1 more source

Diversity and community composition of euglossine bee assemblages (Hymenoptera: Apidae) in western Amazonia [PDF]

open access: yes, 2018
Tropical forests are known for their diverse insect fauna. We aimed to determine the effect and relative importance of latitude, elevation and climatic factors affecting species richness and turnover in euglossine bee assemblages along a gradient of 18 ...
Abrahamczyk, Stefan   +3 more
core  

Trapline foraging by bumble bees: VI. Behavioral alterations under speed–accuracy trade-offs [PDF]

open access: yes, 2013
Trapline foraging (repeated sequential visits to a series of feeding locations) has often been observed in animals collecting floral resources. Past experiments have shown that bumble bees cannot always develop accurate (i.e., repeatable) traplines to a ...
Ohashi Kazuharu   +2 more
core   +1 more source

Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations

open access: yesBiotropica, Volume 57, Issue 6, November 2025.
In this study, we scrutinized floral enantiostyly in Mormodes orchids, a unique trait within Orchidaceae first observed by Charles Darwin. We hypothesize how intricate column twisting drives strategic pollinarium placement onto opposite sides of the thorax of male euglossine bees, enhancing cross‐pollination.
Arthur Domingos‐Melo   +2 more
wiley   +1 more source

ASPECTOS DA RIQUEZA E DISTRIBUIÇÃO DE ABELHAS EUGLOSSINI (Hymenoptera: Apidae) NO BRASIL

open access: yesCaminhos de Geografia, 2012
Este estudo objetivou identificar e analisar a composição de espécies da Tribo Euglossini (Hymenoptera: Apidae) ocorrentes no território brasileiro, quanto à riqueza, biogeografia e similaridade tendo como base trabalhos publicados.
José Neiva Mesquita Neto   +3 more
doaj  

Evidence of separate karyotype evolutionary pathway in Euglossa orchid bees by cytogenetic analyses

open access: yesAnais da Academia Brasileira de Ciências, 2013
Euglossini are solitary bees considered important pollinators of many orchid species. Information regarding chromosome organization is available for only a small number of species in this group.
ANDERSON FERNANDES   +3 more
doaj   +1 more source

The genomes of two key bumblebee species with primitive eusocial organization [PDF]

open access: yes, 2015
Background: The shift from solitary to social behavior is one of the major evolutionary transitions. Primitively eusocial bumblebees are uniquely placed to illuminate the evolution of highly eusocial insect societies.
Amdam, Gro V.   +143 more
core   +17 more sources

Solitary oil‐collecting bee in cities: Habitat suitability and lack of population structuring in Centris analis

open access: yesInsect Conservation and Diversity, Volume 18, Issue 6, Page 982-996, November 2025.
Lack of genetic population structure in urban populations of Centris analis. Low morphological differentiation across four phytogeographical regions in Brazil. Monogyny‐monandry mating system in C. analis. Abstract The decline of insect populations worldwide has raised concerns about the negative impact on ecosystem services, particularly pollination ...
Leandro Pereira Rezende   +4 more
wiley   +1 more source

Morfologia de machos e fêmeas de Euglossa annectans Dresler 1982 (Hymenoptera, Apidae, Euglossini). [PDF]

open access: yes, 2016
Foram coletados dados de morfometria de machos e fêmeas de Euglossa annectans em condições de laboratório, de um grupo de células separado artificialmente, a partir de um ninho alojado espontaneamente em caixa racional de abelhas sem ...
CORTOPASSI-LAURINO, M.   +2 more
core  

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