Results 121 to 130 of about 343,225 (409)

Too cold to handle: Climatic constraints on arboreal ants in temperate forests

open access: yesJournal of Animal Ecology, EarlyView.
By comparing fine‐scale microclimatic temperatures and ant thermal tolerances over a seasonal cycle, we found evidence to support 150+ years of previously untested conventional wisdom and the hypothesis that winter cold and not summer heat likely limit arboreal diversity in temperate forests.
Michelle Kirchner   +2 more
wiley   +1 more source

On the type series of Stenosigma humerale Giordani Soika with the description of a new species (Hymenoptera, Vespidae, Eumeninae)

open access: yesRevista Brasileira de Entomologia, 2016
A new species, Stenosigma quechua Hermes & Ferreira sp. nov., is described from specimens previously included in the type series of Stenosigma humerale Giordani Soika, 1990.
Marcel G. Hermes, Wellington D. Ferreira
doaj  

Expression of the melittin gene of Apis cerana cerana (Hymenoptera: Apidae) in insect cells

open access: yesEuropean Journal of Entomology, 2006
A fragment encoding melittin cDNA from Apis cerana cerana fused with glutathione S-transferase gene was inserted into the multiple cloning site of the pBacFastHTb to construct a recombinant donor plasmid, pBacHT-GSTAccM, which was transposed to the ...
Wan-Jun SHI   +2 more
doaj   +1 more source

Nest architecture of Oxaea austera (Andrenidae, Oxaeinae) and its significance for the interpretation of Uruguayan fossil bee cells [PDF]

open access: yes, 2014
Oxaea austera nests in hard, red lateritic soils with dense grass cover. Some characters of Oxaea austera nests conform to the known architecture of the oxaeine nests such as the long, vertical shaft and the radiating, horizontal tunnels connected to ...
Alcock   +19 more
core   +2 more sources

Biological Flora of Britain and Ireland: Cytisus scoparius*

open access: yesJournal of Ecology, EarlyView.
Broom is an attractive and common native plant across Britain, Ireland and most of Europe, and yet it is considered a harmful and invasive weed around the rest of the world. This is aided by broom thriving on poor dry soils, helped by using green stems for photosynthesis and having root nodules to fix nitrogen.
Peter A. Thomas   +9 more
wiley   +1 more source

Taxonomic revision of the oil-collecting bee subgenus Epicharis (Epicharitides) Moure, 1945 (Hymenoptera: Apidae), with the description of two new species

open access: yesEuropean Journal of Taxonomy
A taxonomic revision of the oil-collecting bees of the subgenus Epicharis (Epicharitides) Moure, 1945 is provided. A total of nine species were recognized: E. cockerelli Friese, 1900; E. duckei Friese, 1901; E. iheringi Friese, 1899; E.
Germán Villamizar, Felipe Vivallo
doaj   +1 more source

Short term response of ants to the removal of ground cover in organic olive orchards

open access: yesEuropean Journal of Entomology, 2011
Ants are the most abundant group of soil arthropods in olive groves where they are involved in various trophic relationships of great importance for crops. The system of soil management is one agricultural practice that has a great effect on ants, so the
Mercedes CAMPOS   +5 more
doaj   +1 more source

The evolution of heat shock protein sequences, cis-regulatory elements, and expression profiles in the eusocial Hymenoptera

open access: yesBMC Evolutionary Biology, 2016
BackgroundThe eusocial Hymenoptera have radiated across a wide range of thermal environments, exposing them to significant physiological stressors. We reconstructed the evolutionary history of three families of Heat Shock Proteins (Hsp90, Hsp70, Hsp40 ...
Andrew D. Nguyen, N. Gotelli, S. Cahan
semanticscholar   +1 more source

Distribution and Biology of the Sphecine Wasps of Michigan (Hymenoptera: Sphecidae: Sphecinae) [PDF]

open access: yes, 2017
Biological information and distribution maps are provided for the 26 species of thread-waisted wasps that occur in Michigan. Podium luctuosum is a new state record.
O\u27Brien, Mark F
core   +3 more sources

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