Results 31 to 40 of about 32,052 (317)

The Genome and Methylome of a Subsocial Small Carpenter Bee, Ceratina calcarata [PDF]

, 2016
Understanding the evolution of animal societies, considered to be a major transition in evolution, is a key topic in evolutionary biology. Recently, new gateways for understanding social evolution have opened up due to advances in genomics, allowing for ...
Glastad, Karl M., Hunt, Brendan G., Lawson, Sarah P., Rehan, Sandra M.   +3 more
core   +2 more sources

Convergent Loss of Prothoracicotropic Hormone, A Canonical Regulator of Development, in Social Bee Evolution

Frontiers in Physiology, 2022
The evolution of insect sociality has repeatedly involved changes in developmental events and their timing. Here, we propose the hypothesis that loss of a canonical regulator of moulting and metamorphosis, prothoracicotropic hormone (PTTH), and its ...
Claudinéia P. Costa, Naoki Okamoto, Naoki Okamoto, Michael Orr, Naoki Yamanaka, S. Hollis Woodard   +5 more
doaj   +1 more source

Does the waggle dance help honey bees to forage at greater distances than expected for their body size? [PDF]

, 2015
A honey bee colony has been likened to an oil company. Some members of the company or colony prospect for valuable liquid resources. When these are discovered other group members can be recruited to exploit the resource. The recruitment of nestmates to a
Beekman, Beekman, Beekman, Beekman, Beutler, Biesmeijer, Biesmeijer, Couvillon, Couvillon, Couvillon, Czaczkes, Donaldson-Matasci, Dornhaus, Dornhaus, Dramstad, Dyer, Greenleaf, Grüter, Haskell, Heinrich, Heinrich, Janzen, Jarau, Kuhn-Neto, Lindauer, Lindauer, Maynard Smith, Maynard Smith, Nieh, Nieh, Nieh, Nieh, Nieh, Oldroyd, Osborne, Ratnieks, Ratnieks, Schneider, Schürch, Schürch, Seeley, Seeley, Seeley, Seeley, Sherman, van Nieuwstadt, Visscher, von Frisch, Wilson, Zurbuchen   +49 more
core   +2 more sources

Calcareous grassland fragments as sources of bee pollinators for the surrounding agricultural landscape

Global Ecology and Conservation, 2021
In Central Europe, agricultural intensification has led to increasing fragmentation and loss of semi-natural habitats. In turn, ecosystem services such as pollination are being lost when insect pollinators depend on semi-natural habitats.
Felix Klaus, Teja Tscharntke, Johannes Uhler, Ingo Grass   +3 more
doaj   +1 more source

Limited social plasticity in the socially polymorphic sweat bee Lasioglossum calceatum [PDF]

, 2018
This is the final version of the article. Available from the publisher via the DOI in this record.Eusociality is characterised by a reproductive division of labour, where some individuals forgo direct reproduction to instead help raise kin.
Davison, P, Field, JP
core   +1 more source

Chemoreceptor Evolution in Hymenoptera and Its Implications for the Evolution of Eusociality. [PDF]

, 2015
Eusocial insects, mostly Hymenoptera, have evolved unique colonial lifestyles that rely on the perception of social context mainly through pheromones, and chemoreceptors are hypothesized to have played important adaptive roles in the evolution of ...
Berger, Shelley L, Liebig, Jürgen, Ray, Anandasankar, Rokas, Antonis, Zhou, Xiaofan, Zwiebel, Laurence J   +5 more
core   +2 more sources

Description and validation of an improved method to feed solitary bees (Osmia spp.) known amounts of pesticides

Ecotoxicology and Environmental Safety, 2023
Pesticide exposure is an important driver of bee declines. Laboratory toxicity tests provide baseline information on the potential effects of pesticides on bees, but current risk assessment schemes rely on one species, the highly social honey bee, Apis ...
C. Azpiazu, S. Hinarejos, G. Sancho, S. Albacete, F. Sgolastra, C.A.H. Martins, X. Domene, J. Benrezkallah, A. Rodrigo, X. Arnan, J. Bosch   +10 more
doaj   +1 more source

Pesticide Exposure Assessment Paradigm for Solitary Bees [PDF]

Environmental Entomology, 2018
Current pesticide risk assessment for bees relies on a single (social) species, the western honey bee, Apis mellifera L. (Hymenoptera: Apidae). However, most of the >20,000 bee species worldwide are solitary. Differences in life history traits between solitary bees (SB) and honey bees (HB) are likely to determine differences in routes and levels of ...
Sgolastra F., Hinarejos S., Pitts-Singer T. L., Boyle N. K., Joseph T., Luckmann J., Raine N. E., Singh R., Williams N. M., Bosch J.   +9 more
openaire   +2 more sources

Second‐Generation Crystalline Sponges Enabling Consistent Structure Analysis Under Standardized Conditions for Diverse Molecules

Angewandte Chemie, EarlyView.
The second‐generation crystalline sponge method allows structurally diverse molecular guests to crystallize under standardized crystallization conditions. The key is the predominant packing type of cages and anions in crystals. ABSTRACT Crystallization is typically highly sensitive to even minor structural differences in target molecules.
Wei He, Hiroki Takezawa, Makoto Fujita
wiley   +2 more sources

Combined stress from parasites, pesticides and lack of flowers drives bee declines [PDF]

, 2015
Bees are subject to numerous pressures in the modern world. The abundance and diversity of flowers has declined, bees are chronically exposed to cocktails of agrochemicals, and they are simultaneously exposed to novel parasites accidentally spread by ...
Botias Talamantes, Cristina, Goulson, Dave, Nicholls, Beth, Rotheray, Ellen   +3 more
core   +1 more source