Results 171 to 180 of about 892 (198)
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Experimental & Applied Acarology, 2002
Mites in the genus Varroa are the primary parasites of honey bees on several continents. Genetic analyses based on Varroa mitochondrial DNA have played a central role in establishing Varroa taxonomy and dispersal. Here we present the complete mitochondrial sequence of the important honey bee pest Varroa destructor. This species has a relatively compact
Jay D, Evans, Dawn L, Lopez
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Mites in the genus Varroa are the primary parasites of honey bees on several continents. Genetic analyses based on Varroa mitochondrial DNA have played a central role in establishing Varroa taxonomy and dispersal. Here we present the complete mitochondrial sequence of the important honey bee pest Varroa destructor. This species has a relatively compact
Jay D, Evans, Dawn L, Lopez
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Experimental and Applied Acarology, 2012
A crude oil extract of neem seed (Azadirachta indica, Sapindales: Meliaceae) was evaluated for repellency on Varroa destructor Anderson and Trueman. Burgerjon's tower was used to spray worker bee pupae with 0.0, 0.3, 0.7, 1.3, 2.6, 5.3, 10.6 and 21.1% neem extract concentrations. Sprayed pupae were attached to observation arenas and incubated at 32 ± 2°
Rebeca, González-Gómez +4 more
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A crude oil extract of neem seed (Azadirachta indica, Sapindales: Meliaceae) was evaluated for repellency on Varroa destructor Anderson and Trueman. Burgerjon's tower was used to spray worker bee pupae with 0.0, 0.3, 0.7, 1.3, 2.6, 5.3, 10.6 and 21.1% neem extract concentrations. Sprayed pupae were attached to observation arenas and incubated at 32 ± 2°
Rebeca, González-Gómez +4 more
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Journal of Economic Entomology, 1983
The longevity of normal and varroa-infested Africanized honey bees, Apis mellifera L., was compared. The degree of infestation was determined by counting the adult and deutonymphal female mites present in the brood cell when the adult bee emerged. Uninfested control bees lived an average of 27.6 days; infested bees lived only 13.6.
David De Jong, Paula H. De Jong
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The longevity of normal and varroa-infested Africanized honey bees, Apis mellifera L., was compared. The degree of infestation was determined by counting the adult and deutonymphal female mites present in the brood cell when the adult bee emerged. Uninfested control bees lived an average of 27.6 days; infested bees lived only 13.6.
David De Jong, Paula H. De Jong
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Bein-Entwicklung bei der Bienen-Brutmilbe Varroa jacobsoni (Acarina: Varroidae)
Entomologia Generalis, 1995Embryonic development in the parasitic honeybee mite Varroa jacobsoni Oudemans 1904 was studied by scanning electron microscopy with special emphasis on the formation of the legs (pedes). Immediately after segmentation of the germ band stage the anlagen of all the 6 pairs of extremities are formed in the prosoma.
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2009
?????????????????????? ???????????????? ???????????????????????? ?????????? Varroa destructor Anderson et Trueman, 2000, ?????????????????????????????? ?? ???????????? ?????????????????? ???????????????? ????????. ???????????? ?????????????????? ???????????? ???????????????????? ???? ???????????? ???????????????? ?????????????????? ?????????????????????
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?????????????????????? ???????????????? ???????????????????????? ?????????? Varroa destructor Anderson et Trueman, 2000, ?????????????????????????????? ?? ???????????? ?????????????????? ???????????????? ????????. ???????????? ?????????????????? ???????????? ???????????????????? ???? ???????????? ???????????????? ?????????????????? ?????????????????????
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2014
A comparative analysis of morphological anomalies in seasonal and regional samples of Varroa destructor Anderson and Trueman, 2000 was conducted. It was found, that the abnormality rate of most morphological characters increases from spring to summer and, conversely, decreases from autumn to winter.
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A comparative analysis of morphological anomalies in seasonal and regional samples of Varroa destructor Anderson and Trueman, 2000 was conducted. It was found, that the abnormality rate of most morphological characters increases from spring to summer and, conversely, decreases from autumn to winter.
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2009
The peculiarities of dynamics of a level of varroatosis in adult bees in the Zacarpatye, Poltava regions and in the Crimea in 1996???1997 years are specified in work. Is revealed, that the speed of development of varroatosis invasion during a season is higher in of bees family carpathian race, and also at intensive conducting beekeeping and the ...
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The peculiarities of dynamics of a level of varroatosis in adult bees in the Zacarpatye, Poltava regions and in the Crimea in 1996???1997 years are specified in work. Is revealed, that the speed of development of varroatosis invasion during a season is higher in of bees family carpathian race, and also at intensive conducting beekeeping and the ...
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Veterinary Parasitology: Regional Studies and Reports
The honeybee (Apis mellifera) ectoparasite, Varroa destructor, is one of the most important honeybee pests worldwide. Acaricides, including the pyrethroids (tau-fluvalinate, flumethrin), and organophosphate (coumaphos) have been applied to control this mite within apiaries, still the long-term, constant, and excessive use of these products has led to ...
Karakaya, İsmail +2 more
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The honeybee (Apis mellifera) ectoparasite, Varroa destructor, is one of the most important honeybee pests worldwide. Acaricides, including the pyrethroids (tau-fluvalinate, flumethrin), and organophosphate (coumaphos) have been applied to control this mite within apiaries, still the long-term, constant, and excessive use of these products has led to ...
Karakaya, İsmail +2 more
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Stato delle ricerche su Varroa jacobsoni Oudemans (Acari: Varroidae)
1993Varroasis is caused by the parasitic mite Varroa jacobsoni Oud. and is a very important pathology for Apis mellifera. This disease was restricted to the Asian South-East until the end of the fifties; nevertheless, during the last decades it rapidly spread, becoming in a short time a world-wide problem for apiculture.
CARLI, ANNA MARIA +1 more
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2009
The study of seasonal variability of mite V. destructor was carried out. The summer generation of mites appears to be characterized by the largest morphological variability whereas the winter one has stable characters. We failed to evolve the complex of morphological characters that would allow us to identify, with high level of reliability, certain ...
Akimov, I.A. +2 more
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The study of seasonal variability of mite V. destructor was carried out. The summer generation of mites appears to be characterized by the largest morphological variability whereas the winter one has stable characters. We failed to evolve the complex of morphological characters that would allow us to identify, with high level of reliability, certain ...
Akimov, I.A. +2 more
openaire +1 more source