Results 61 to 70 of about 39,220 (277)

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, EarlyView.
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

Observations on Colony Size in Bumblebees (\u3ci\u3eBombus\u3c/i\u3e Spp.) [PDF]

open access: yes, 2017
(excerpt) One factor to consider when attempting to rear bumblebees (Bombus spp.) for pollination of crops is potential colony size. Species which emerge from hibernation early and continue to produce workers late in the summer or early fall are likely ...
Husband, Robert W
core   +2 more sources

Bee community and trait‐based responses to fire in a Mediterranean landscape

open access: yesInsect Conservation and Diversity, EarlyView.
Fire drives a short‐term increase in bee abundance and diversity, despite its strong negative impact on floral resources. Acting as an environmental filter, fire shapes bee communities as increased post‐fire fine‐scale heterogeneity favors bees with specific functional traits such as ground‐nesting and generalist species.
Georgios Nakas   +8 more
wiley   +1 more source

The role of artificial nesting boxes and birds’ nests in maintaining vital activity of the Vespidae and Apidae families

open access: yesБіологічні студії, 2022
Background. During 2019‒2021, from the first decade of March to the third decade of July on the territory of northeastern Ukraine, ornithological studies on hollow-nesting birds populating artificial nestings were carried out.
O. O. Yarys, A. B. Chaplygina
doaj   +1 more source

Historical and recent investigations on the bee fauna of Taiwan (Hymenoptera, Apoidea) [PDF]

open access: yes, 2008
The bee fauna of Taiwan was studied intensively in the first half of last century and was based in large parts on the extensive material collected by Hans Sauter between 1902 and 1914. Subsequent studies on bees of Taiwan have only been sporadic.
Dubitzky, Andreas   +2 more
core  

Rapid evolution of chemosensory receptor genes in a pair of sibling species of orchid bees (Apidae: Euglossini). [PDF]

open access: yes, 2015
BackgroundInsects rely more on chemical signals (semiochemicals) than on any other sensory modality to find, identify, and choose mates. In most insects, pheromone production is typically regulated through biosynthetic pathways, whereas pheromone sensory
Brand, Philipp   +5 more
core   +3 more sources

Estimating wild bee population size with validated distance sampling

open access: yesInsect Conservation and Diversity, EarlyView.
Distance Sampling is a promising method to estimate population size but has never been validated on insects. We validated it on a honey bee population of known size. We applied Distance Sampling to three insular pollinators and found that estimates are consistent across days, match species phenology and reflect the expected influence of weather ...
Claudia Bruschini   +7 more
wiley   +1 more source

Year‐round pollinator visitation of ornamental plants in Mediterranean urban parks

open access: yesInsect Conservation and Diversity, EarlyView.
Pollinators visiting ornamental plants in urban parks remained diverse throughout the year. They were represented by wild bees (42%), honeybees (37%), flies (18%), butterflies (2%) and beetles (1%). Both native and non‐native plants attracted pollinators.
Alejandro Trillo   +3 more
wiley   +1 more source

A survey of the genus Ceratina Latreille (Hymenoptera: Apidae) in northern Iran, with three new records [PDF]

open access: yesJournal of Insect Biodiversity and Systematics, 2016
A field survey of the bee fauna was conducted in the north of Iran during 2009 to 2015. Special concern was given to the tribe Ceratinini (Hymenoptera; Apidae). Ten species of the genus Ceratina were collected and identified in the present study.
Mehdi Salarian   +3 more
doaj  

Determining Terminal Velocities of Selected Insects and Substitute Materials to Develop Future Test Procedures for Insect‐Friendly Mowing Technology

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT Agricultural grasslands are vital habitats for insects that provide key ecosystem services. However, conventional rotary mowers are proposed to cause significant insect mortality due to the high rotational speed of their blades and the resulting airflow.
Jonas Frank   +6 more
wiley   +1 more source

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