نتایج جستجو برای: varroa

تعداد نتایج: 1070  

Journal: :Genetics and molecular research : GMR 2014
C A Medina-Flores E Guzmán-Novoa M M Hamiduzzaman C F Aréchiga-Flores M A López-Carlos

Honey bee (Apis mellifera) colonies of African and European descent were compared for levels of Varroa destructor infestation in 3 different ecological regions in Mexico. The 300 colonies that were studied were located in subtropical, temperate sub-humid, and temperate dry climates. The morphotype and mitotype of adult bees as well as their rates of infestation by varroa mites were determined. ...

Journal: :Journal of economic entomology 2009
James P Strange Nicholas W Calderone

We evaluated the performance of six named types of package honey bees, Apis mellifera L (Hymenoptera: Apidae), from four commercial producers. We examined the effects of levels of the parasitic mite Varroa destructor Anderson & Trueman, the endoparasitic mite Acarapis woodi (Rennie), the gut parasite Nosema (species not determined) in samples from bees in 48 packages, and levels of adult drones...

2016
Noureddine Adjlane El-Ounass Tarek Nizar Haddad

BACKGROUND The Varroa destructor varroasis is a very serious parasite of honeybee Apis mellifera. The objective of this study was to evaluate the effectiveness of Varroa treatment using organic acid (oxalic acid) in Algeria identifying its side effects on bee colonies. METHODS Treatment was conducted in one apiary consisting 30 colonies kept in Langstroth hives kind. Oxalic acid dripped direc...

Journal: :Science 2012
Stephen J Martin Andrea C Highfield Laura Brettell Ethel M Villalobos Giles E Budge Michelle Powell Scott Nikaido Declan C Schroeder

Emerging diseases are among the greatest threats to honey bees. Unfortunately, where and when an emerging disease will appear are almost impossible to predict. The arrival of the parasitic Varroa mite into the Hawaiian honey bee population allowed us to investigate changes in the prevalence, load, and strain diversity of honey bee viruses. The mite increased the prevalence of a single viral spe...

Journal: :Annals of parasitology 2015
Małgorzata Dmitryjuk Kazimierz Zalewski Marek Raczkowski Krystyna Żółtowska

The fatty acid (FA) profile of lipids extracted from the Varroa destructor parasitic mite and its host, drone-prepupae of Apis mellifera, was determined by gas chromatography (GC). The percentages of saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs) were generally similar in parasites and their hosts. Fatty acids were arranged in the follo...

Journal: :Abanico veternario 2023

Las abejas son susceptibles a enfermedades, las cuales causan importantes pérdidas económicas en la actividad apícola. El objetivo fue evaluar prevalencia de Varroa sp, Nosema sp y Acarapis apiarios ubicados dos regiones Campeche, México. Se evaluaron 116 muestras 10 apiarios. La menor Hopelchén comparada Sihochac (98.5 % 100 %), comparación (85.9 88.0 %). nivel infestación mayor (7.32 3.73 áca...

2015
Z. N. Ayoub D. S. Ahmed M. Abdulla M. H. Mosa

Varroa mite infestation was first detected in Iraq in the mid 1980s (Food and Agriculture Organization). High level of the infestation was found in all apiaries of Dohuk region and may act as a risk factor to the bee health. The mite V. destructor feeds on the haemolymph of the developing and adult bees. The structures that may be directly affected by Varroa mite infestation are the bee glands....

2006
Diana Sammataro

Since the introduction of varroa mites (Varroa destructor Anderson and Trueman, 2000), the impact of tracheal mites on bees has been largely overshadowed or ignored. Tracheal mites are still present in bees, and may be responsible for some unexplained colony losses. If they cause bee mortality, it is important to be able to identify their presence and at what levels. This paper illustrates a qu...

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