Results 61 to 70 of about 346 (156)

Prezygotic barriers effectively limit hybridization in a rapid evolutionary radiation

New Phytologist, Volume 244, Issue 6, Page 2548-2560, December 2024.
Summary Hybridization is increasingly recognized as an important evolutionary process across the tree of life. In many clades, phylogenomic approaches have permitted unparalleled insight into the extent and frequency of hybridization. However, we continue to lack a deep understanding of the factors that limit and shape patterns of hybridization ...
Kathryn A. Uckele, Oscar M. Vargas, Kathleen M. Kay   +2 more
wiley   +1 more source

Genetic structure analysis of Eufriesea violacea (Hymenoptera, Apidae) populations from southern Brazilian Atlantic rainforest remnants

Genetics and Molecular Biology, 2005
Random amplified polymorphic DNA (RAPD) markers were used to analyze the genetic structure of Eufriesea violacea populations in three fragments (85.47, 832.58 and 2800 ha) of Atlantic rainforest located in the north of the Brazilian state of Paraná.
Silvia H. Sofia, Francine M. de Paula, Aline M. dos Santos, Fernanda S. Almeida, Leda M.K. Sodré   +4 more
doaj   +1 more source

Juxtocellar Structures in Euglossine Bees: A New Character for Corbiculate Studies (Hymenoptera: Apidae).

Beiträge zur Entomologie = Contributions to Entomology, 2008
Es wird eine neuartige morphologische Struktur bei Prachtbienen (Apinae: Euglossini) dargestellt. Diese findet sich posterolateral der Ocelli und wird als “Juxtocellarstruktur” bezeichnet. Sie wird in ihrer Ausprägung bei den Euglossinen beschrieben. Homologe Strukturen wurden bei verschiedenen verwandten Gruppen von Apidae gefunden, z. B.
Hinojosa-Diaz, Ismael A., Engel, Michael S.   +1 more
openaire   +3 more sources

The modelling of flower colour: spectral purity or colour contrast as biologically relevant descriptors of flower colour signals for bees depending upon the perceptual task

Plant Biology, Volume 26, Issue 6, Page 896-910, October 2024.
Flower colour signals have evolved for bee perception, which is dynamic and incorporates a vector‐based purity preference for floral guides at close range, while a simple scalar metric of colour contrast does not represent the behaviour of how bees first detect then subsequently make a final decision about which flower to visit and where to land on ...
K. Lunau, A. G. Dyer
wiley   +1 more source

Sampling a biodiversity hotspot: the orchid-bee fauna (Hymenoptera: Apidae) of Tarapoto, northeastern Peru, the richest and most diverse site of the Neotropics

Brazilian Journal of Biology
The orchid-bee fauna of the region of Tarapoto, northeastern Peru, was surveyed using seventeen different scents as baits to attract orchid-bee males.
A Nemésio, C Rasmussen
doaj   +1 more source

Euglossine bees as potential bio-indicators of coffee farmas: Does forest access, on a seasonal basis, affect sbundance?

Revista de Biología Tropical, 2006
In order to understand the implications of agriculture on the environment, ecosystem health must be measured. Observing the presence of a biological indicator within an ecosystem is one such method. In this study, male euglossine bees were observed using
Ingemar Hedström, Jessica Harris, Kimberly Fergus   +2 more
doaj   +2 more sources

Orchid bees (Hymenoptera: Apidae) in the coastal forests of southern Brazil: diversity, efficiency of sampling methods and comparison with other Atlantic forest surveys

Papéis Avulsos de Zoologia, 2011
Surveys of orchid bees at the Brazilian Atlantic forest have been restricted to a few regions, making difficult to understand latitudinal patterns of distribution and diversity of these bees.
Vanessa C. Mattozo, Luiz R.R. Faria, Gabriel A.R. Melo   +2 more
doaj   +1 more source

Baited McPhail Fruitfly Traps to Collect Euglossine Bees

, 1972
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

The orchid-bee fauna (Hymenoptera: Apidae) of ‘Reserva Biológica de Una’, a hotspot in the Atlantic Forest of southern Bahia, eastern Brazil

Brazilian Journal of Biology
The orchid-bee fauna of ‘Reserva Biológica de Una’ (REBIO Una), one of the largest Atlantic Forest remnants in southern Bahia, eastern Brazil, was surveyed for the first time. Baits with sixteen different scents were used to attract males of orchid bees.
A Nemésio
doaj   +1 more source

The orchid-bee faunas (Hymenoptera: Apidae) of 'Parque Nacional do Monte Pascoal', 'Parque Nacional do Descobrimento' and three other Atlantic Forest remnants in southern Bahia, eastern Brazil

Brazilian Journal of Biology
The orchid-bee faunas of ‘Parque Nacional do Monte Pascoal’, ‘Parque Nacional do Descobrimento’ and three other Atlantic Forest remnants ranging from 1 to 300 ha in southern Bahia, eastern Brazil, were surveyed. Baits with seventeen different scents were
A Nemésio
doaj   +1 more source