Results 31 to 40 of about 549 (132)
A unique high‐elevation Exoneura bee defies typical elevation‐driven declines in bee activity, nesting exclusively in dead branches of snow gums near the alpine tree line. Nesting and foraging are tightly linked to snow gum presence, with most activity occurring within 30 m of these trees. Biophysical modelling indicates the bee's thermally constrained
Joshua M. Coates +3 more
wiley +1 more source
Grassland fragmentation effects on cavity‐nesting Hymenoptera are habitat‐specific. Isolated sand steppe fragments are associated with higher brood‐cell abundance. In loess steppes, higher flower frequency increases bee brood‐cell production and parasitoid activity. Abstract The global decline in insects threatens ecosystem functioning, but the drivers
Edina Török +6 more
wiley +1 more source
Two continents and two names for a Neotropical colletid bee species (Hymenoptera: Colletidae: Neopasiphaeinae): Hoplocolletes ventralis (Friese, 1924) [PDF]
Neopasiphaeine bees (Apoidea: Colletidae) are known for their Amphinotic distribution in the Australian and Neotropical regions. Affinities between colletid taxa in Australia and South America have been speculated for decades, and have been confirmed by ...
Eduardo A.B. Almeida +1 more
doaj +2 more sources
We compiled the first checklist of wild bees in Doñana Protected Area, documenting 385 species, including three vulnerable and one endangered species listed in the Red List. Bee species exhibit diverse floral preferences, highlighting the need to incorporate plant–pollinator interactions and the role of plants in conservation and management strategies ...
Francisco P. Molina +3 more
wiley +1 more source
Levantamento da fauna de Abelhas silvestres (Hymenoptera, Apoidea) na região da "Baixada Maranhense": Vitória do Mearim, MA, Brasil [PDF]
Estudou-se durante um ano a fauna de abelhas de uma região da Baixada maranhense em Vitória do Mearim — MA. Foram feitas coletas mensais com auxílio de redes entomológicas e armadilhas de cheiro, no período de um ano, totalizando 288 horas de amostragem.
Patrícia M.C. de ALBUQUERQUE +4 more
doaj +1 more source
Fat‐tailed dispersal shapes connectivity in a solitary bee
Abstract Dispersal—movement potentially leading to gene flow—is a fundamental ecological process yet notoriously difficult to measure. For solitary bees in particular, determining the spatial scale of dispersal movements and how landscape features influence connectivity is key to achieving conservation goals. Over 2 years, we marked 1698 females of the
Nicholas N. Dorian, Elizabeth E. Crone
wiley +1 more source
Beyond the treeline: Are wood‐nesting bees and wasps limited by nesting habitat at high elevations?
Abstract Although climate suitability is often thought to be the most important determinant of species ranges, non‐climate variables such as biotic interactions, dispersal abilities, and habitat quality may play equally important roles as range‐limiting factors.
Lydia H. Wong, Jessica R. K. Forrest
wiley +1 more source
Trapped honey bees reduce floral visitation on milkweed flowers
Abstract Trapped arthropods have been shown to benefit plants in several ways, but few studies have examined the potential costs of arthropod entanglement. Milkweeds (Asclepias spp.) have an unusual pollination system that requires relatively large packets of pollen (pollinia) to become attached to the appendages of insect pollinators and be pulled ...
Ian D. Jett, Louie H. Yang
wiley +1 more source
Se describe el capullo, la larva y pupa de Colletes musculus Friese, 1910 (Hymenoptera: Colletidae). Adicionalmente, se reportan otros himenópteros simpátricos, así como la vegetación asociada al área de nidificación ubicada en la costa de la Región de ...
Héctor Araya +2 more
doaj
Tropical Bee Assemblage Diversity Decreases With Elevation While Body Size Increases
Photos of bee specimens collected in the Colombian Andes across a nearly 3000 m elevational cline. They are arranged to illustrate both the decline in richness with elevation and the increase in community average body size with elevation. ABSTRACT Elevation gradients are powerful drivers of changes in species composition, richness, and functional ...
Nash E. Turley +6 more
wiley +1 more source

