Results 61 to 70 of about 19,827 (243)

Urbanization is associated with shifts in bumblebee body size, with cascading effects on pollination

open access: yesEvolutionary Applications, 2021
Urbanization is a global phenomenon with major effects on species, the structure of community functional traits and ecological interactions. Body size is a key species trait linked to metabolism, life‐history and dispersal as well as a major determinant ...
Panagiotis Theodorou   +3 more
doaj   +1 more source

Negative Effects of the Neonicotinoid Clothianidin on Foraging Behavior and Antennal Sensitivity in Two Common Pollinator Species, Osmia bicornis and Bombus terrestris

open access: yesFrontiers in Ecology and Evolution, 2021
Insect species richness and abundance has declined rapidly over the last few decades. Various stressors, such as the conversion of natural habitats, climate change, land-use intensification, agrochemicals and pathogens, are thought to be major factors in
Florian Straub   +3 more
semanticscholar   +1 more source

A Test of Bombus terrestris Cocoon and other Common Methods for Nest Initiation in B. lapidarius and B. hortorum

open access: yesJournal of Apicultural Science, 2012
Porównano kilka metod stymulacji zakładania gniazd (ze szczególnym uwzględnieniem wykorzystania kokonów Bombus terrestris) przez matki B. lapidarius i B. hortorum. Stwierdzono, że procent matek B. lapidarius, które wybudowały pierwszą miseczkę na jaja na
Bučánková Alena, Ptáček Vladimír
doaj   +1 more source

Lower pollen nutritional quality delays nest building and egg laying in Bombus terrestris audax micro-colonies leading to reduced biomass gain

open access: yesApidologie, 2021
The performance of Bombus terrestris micro-colonies fed five diets differing in pollen species composition and level of nine essential amino acids (EAA; leucine, lysine, valine, arginine, isoleucine, phenylalanine, threonine, histidine, methionine) was ...
Jordan T. Ryder   +3 more
semanticscholar   +1 more source

Consequences of the high abundance of Bombus terrestris on the pollination of Vicia faba

open access: yesJournal of Pollination Ecology, 2021
One of the main visitors to Fabia bean crops (Vicia faba) in South America is the invasive bumblebee species Bombus terrestris. This is particularly true in Chile, where B.
Cecilia Smith   +3 more
doaj   +1 more source

Reduced nest development of reared Bombus terrestris within apiary dense human-modified landscapes

open access: yesScientific Reports, 2021
Wild bees are in decline on a local to global scale. The presence of managed honey bees can lead to competition for resources with wild bee species, which has not been investigated so far for human-modified landscapes.
I. Meeus   +4 more
semanticscholar   +1 more source

Yıl Boyu Kitlesel Bombus Arısı (Bombus terrestris) Yetiştiriciliğinde Çiftleştirme Aşaması

open access: yesYüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi, 2018
Örtü altı yetiştiriciliği yapılan birçok bitki türünde tozlayıcı vektör olarak kullanılan bombus arılarının yetiştiriciliği, dünyada önemi giderek artan stratejik bir tarımsal uğraşı haline gelmiştir. Bombus arılarının kontrollü koşullarda yıl boyu yetiştiriciliği koloni oluşturma, ana ve erkek arı yetiştirme, seleksiyon, çiftleştirme ve diyapoz ...
Ayhan Gösterit, Fehmi Gürel
openaire   +1 more source

Interrelations of gas exchange cycles, body movements and heartbeats in the foragers of bumblebee Bombus terrestris (Hymenoptera: Apidae) at low temperatures

open access: yesEuropean Journal of Entomology, 2002
Rhythmic body movements, cyclic gas exchange and heart activity were studied at low temperature (mostly at 5°C) in bumblebee Bombus terrestris foragers. Simultaneous measurements by means of an electrolytic respirometer combined with an optical system by
Aare KUUSIK   +5 more
doaj   +1 more source

Proteomic differences in seminal fluid of social insects whose sperm differ in heat tolerance

open access: yesRoyal Society Open Science, 2023
In the coming years, climate change is likely to increase the frequency and intensity of heatwaves. In many organisms, heat stress provokes physiological perturbations and can lead to decreased male fertility.
Baptiste Martinet   +4 more
doaj   +1 more source

Foraging preferences of bumble bee castes are weakly related to plant species cover on two arable agri-environment habitat types

open access: yesJournal of Pollination Ecology, 2023
Arable field margins provide important floral resources for insect foragers. This study assessed the significance of cultivated margins and floristically enhanced margins, both English agri-environment scheme (AES) options, to foraging bumble bees ...
Niamh Mary McHugh   +7 more
doaj   +1 more source

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