Results 71 to 80 of about 1,518 (216)

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

En route to resources: Foraging strategies of plant‐associated insects to identify resources in complex dynamic environments

Functional Ecology, Volume 38, Issue 8, Page 1664-1682, August 2024.
Read the free Plain Language Summary for this article on the Journal blog. Abstract In plant‐associated communities, foraging insects aim to find different resources of interest. Herbivores look for the most nutritious plant tissues, pollinators for sweet nectar and protein‐rich pollen, and carnivores for their preferred prey.
Q. Rusman, A. Cusumano, I. Vosteen
wiley   +1 more source

The changes in power requirements and muscle efficiency during elevated force production in the fruit fly Drosophila melanogaster [PDF]

, 1997
The limits of flight performance have been estimated in tethered Drosophila melanogaster by modulating power requirements in a 'virtual reality' flight arena.
Dickinson, Michael H., Lehmann, Fritz-Olaf   +1 more
core  

The orchid-bee fauna (Hymenoptera: Apidae) of a forest remnant in the southern portion of the Brazilian Amazon

Brazilian Journal of Biology
The orchid-bee fauna of the region of Porto Velho, in the state of Rondônia, Brazil, close to the southernmost limits of the Amazon Basin, was surveyed for the first time using five different scents as baits to attract orchid-bee males.
JE Santos Júnior, RR Ferrari, A Nemésio   +2 more
doaj   +1 more source

The origin and speciation of orchids

New Phytologist, Volume 242, Issue 2, Page 700-716, April 2024.
Summary Orchids constitute one of the most spectacular radiations of flowering plants. However, their origin, spread across the globe, and hotspots of speciation remain uncertain due to the lack of an up‐to‐date phylogeographic analysis. We present a new Orchidaceae phylogeny based on combined high‐throughput and Sanger sequencing data, covering all ...
Oscar A. Pérez‐Escobar, Diego Bogarín, Natalia A. S. Przelomska, James D. Ackerman, Juan A. Balbuena, Sidonie Bellot, Roland P. Bühlmann, Betsaida Cabrera, Jose Aguilar Cano, Martha Charitonidou, Guillaume Chomicki, Mark A. Clements, Phillip Cribb, Melania Fernández, Nicola S. Flanagan, Barbara Gravendeel, Eric Hágsater, John M. Halley, Ai‐Qun Hu, Carlos Jaramillo, Anna Victoria Mauad, Olivier Maurin, Robert Müntz, Ilia J. Leitch, Lan Li, Raquel Negrão, Lizbeth Oses, Charlotte Phillips, Milton Rincon, Gerardo A. Salazar, Lalita Simpson, Eric Smidt, Rodolfo Solano‐Gomez, Edicson Parra‐Sánchez, Raymond L. Tremblay, Cassio van den Berg, Boris Stefan Villanueva Tamayo, Alejandro Zuluaga, Alexandre R. Zuntini, Mark W. Chase, Michael F. Fay, Fabien L. Condamine, Felix Forest, Katharina Nargar, Susanne S. Renner, William J. Baker, Alexandre Antonelli   +46 more
wiley   +1 more source

Is the “Centro de Endemismo Pernambuco” a biodiversity hotspot for orchid bees?

Brazilian Journal of Biology
The orchid-bee faunas (Hymenoptera: Apidae: Euglossina) of the three largest forest remnants in the “Centro de Endemismo Pernambuco”, northeastern Brazil, namely Estação Ecológica de Murici (ESEC Murici), RPPN Frei Caneca, and a forest preserve belonging
A Nemésio, JE Santos Junior
doaj   +1 more source

Temporal variation in the abundance of Orchid Bees (Hymenoptera: Apidae) in a Neotropical Hygrophilous Forest

Sociobiology, 2014
Although bees are important pollinators in several ecosystems around the world, studies on bee diversity in hygrophilous forests are scarce. This type of vegetation is restricted to permanently wet soils and, therefore, has particular floristic ...
Maurício Meirelles do Nascimento Castro, Carlos Alberto Garófalo, José Carlos Serrano, Cláudia Inês Silva   +3 more
doaj   +1 more source

Conservation Mitonuclear Replacement: Facilitated mitochondrial adaptation for a changing world

Evolutionary Applications, Volume 17, Issue 3, March 2024.
Abstract Most species will not be able to migrate fast enough to cope with climate change, nor evolve quickly enough with current levels of genetic variation. Exacerbating the problem are anthropogenic influences on adaptive potential, including the prevention of gene flow through habitat fragmentation and the erosion of genetic diversity in small ...
Erik N. K. Iverson
wiley   +1 more source

Orchid bees (Hymenoptera, Apidae, Euglossini) are seasonal in Seasonal Semideciduous Forest fragments, southern Brazil

Papéis Avulsos de Zoologia, 2019
Seasonal fluctuations in the abundance of orchid bees have already been reported. The variations in population dynamics may be expected to occur in more predictable and pronounced manners in environments with a clear distinction between rainy and dry ...
Cleiton Margatto, Vinicius Ortega Berno, Rodrigo Barbosa Gonçalves, Luiz Roberto Ribeiro Faria   +3 more
doaj   +1 more source

Morphology of the male reproductive system and spermiogenesis in Hypanthidium foveolatum (Alfken, 1930) (Hymenoptera : Apidae : Megachilinae) [PDF]

, 2009
The morphological aspects of male reproductive tract, spermiogenesis and spermatozoa are typical for each species and reflect its evolution, establishing a unique source of characters, which has been used to help solve phylogenetic problems.
Báo, Sônia Nair, Fiorillo, Bruno Silva, Lino-Neto, José, Silva, Ingrid Gracielle Martins da   +3 more
core   +1 more source