Results 151 to 160 of about 3,288 (181)
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Isolation and characterization of chitin from bumblebee (Bombus terrestris)
International Journal of Biological Macromolecules, 2007Insect chitin possessing shell-like structure was prepared from the bumblebee corpses by a consequent treatment with 1M HCl and 1M NaOH. The bumblebee chitin was compared with crustacean (shrimp) chitin by using elemental analysis, Fourier-transform infrared (FT-IR) and solid-state (13)C cross-polarization magic angle spinning nuclear magnetic ...
Juraj, Majtán +5 more
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Fertility signals in the bumblebee Bombus terrestris (Hymenoptera: Apidae)
Naturwissenschaften, 2008In eusocial Hymenoptera, queen control over workers is probably inseparable from the mechanism of queen recognition. In primitively eusocial bumblebees (Bombus), worker reproduction is controlled not only by the presence or absence of a dominant queen but also by other dominant workers.
A, Sramkova +4 more
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Insectes Sociaux, 2010
Host–parasite systems are characterised by coevolutionary arms races between host and parasite. Parasites are often the driving force, as they replicate much faster than their hosts and have shorter generation times and larger population sizes, resulting in higher mutation rates per time interval.
S. Erler, H. M. G. Lattorff
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Host–parasite systems are characterised by coevolutionary arms races between host and parasite. Parasites are often the driving force, as they replicate much faster than their hosts and have shorter generation times and larger population sizes, resulting in higher mutation rates per time interval.
S. Erler, H. M. G. Lattorff
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2021
???????????????? ?????????? ?????????????????????? ?????????????????????????? ?????????????????????????? ???????????????? ?????????????????? ?????????? (Apis mellifera) ?????? ???????????????????? ???????????????? ?????????????? ???????????? Bombus terrestris ?????? ???????????? ?????????????? ???????????? ???????????????????? ??????????.
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???????????????? ?????????? ?????????????????????? ?????????????????????????? ?????????????????????????? ???????????????? ?????????????????? ?????????? (Apis mellifera) ?????? ???????????????????? ???????????????? ?????????????? ???????????? Bombus terrestris ?????? ???????????? ?????????????? ???????????? ???????????????????? ??????????.
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Animal Behaviour, 2010
Cuckoo bumblebees (subgenus Psithyrus) are social parasites in colonies of their host bumblebee species (Bombus). In spring, parasitic females awaken from hibernation and start searching for established host nests. Some Psithyrus species are specialized on one host species, whereas generalists parasitize several species.
Kirsten Kreuter +3 more
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Cuckoo bumblebees (subgenus Psithyrus) are social parasites in colonies of their host bumblebee species (Bombus). In spring, parasitic females awaken from hibernation and start searching for established host nests. Some Psithyrus species are specialized on one host species, whereas generalists parasitize several species.
Kirsten Kreuter +3 more
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Ecotoxicology, 2011
Perfluorinated organic chemicals like perfluorooctane sulfonic acid (PFOS) are persistent environmental pollutants that have been measured in a great diversity of wildlife worldwide, especially in the aquatic compartment. However, little information is available on the presence and effects of PFOS in the terrestrial compartment.
Mommaerts, Veerle +6 more
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Perfluorinated organic chemicals like perfluorooctane sulfonic acid (PFOS) are persistent environmental pollutants that have been measured in a great diversity of wildlife worldwide, especially in the aquatic compartment. However, little information is available on the presence and effects of PFOS in the terrestrial compartment.
Mommaerts, Veerle +6 more
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Bombus arısı (Bombus terrstris) yetiştiriciliği üzerine araştırmalar
2020Tez (Doktora) -- Çukurova Üniversitesi, Adana, 1997.
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Homing ability of the bumblebee, Bombus terrestris [PDF]
The ability of bumblebees to locate their nest site following artificial displacement was investigated. Bombus terrestris (Hymenoptera: Apidae) workers were marked with numbered tags and displaced up to 15 km from their nest. Bees returned from distances of up to 9.8 km, with the proportion of bees returning declining with distance of the release site ...
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The Bombus-terrestris bee optimization algorithm for feature selection
Applied Intelligence, 2022Jafar Tanha, Zahra Zarei
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Acetamipridin Bombus (Bombus terrestris L.) Arılarında Kuluçka Gelişimi Üzerine Etkisi
2020Son yıllarda yabani ve yönetilen arıların populasyonlarının azalışında tarımda kullanılan pestisitlerin etkisinin olduğu bilinmektedir. Acetamiprid etken maddeli bitki koruma ürünleri örtü altı yetiştiricilikte zararlı böceklerle mücadelede yaygın şekilde kullanılmaktadır.
BULUŞ, İsmail Yaşhan +3 more
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