scholarly journals Effects of Some Insecticides on the Midgut of the Foragers Honeybee Worker Apis mellifera jemenatica

2017 ◽  
Vol 27 (1) ◽  
pp. 59-66
Author(s):  
Dalal Musleh Aljedani Dalal Musleh Aljedani
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Histological Study ◽  
Health And Safety ◽  
Average Concentration ◽  
Control Group ◽  
Epithelial Tissue ◽  
Honeybee Worker ◽  
Bee Community ◽  
Honey Bee Workers

This study aims to evaluate the toxic effects of insecticides on the foragers honey bee workers, Apis mellifera jemenatica. It tracks the effects of the insecticides, Deltamethrin, Malathion and Abamectin through the feeding by mouth, on the midgut epithelial layer, in order to show the histological changes. Histological study on samples of the foragers honey bee workers, after exposure to insecticides for 24 hours, was chosen as the average -concentration of the insecticide concentrations, which were used for each as follows: Deltamethrin 2.50 ppm, Malathion 3.125 ppm and Abamectin 0.1 ppm, in addition to the control group. Studying the effect of each insecticide individually and then comparing the reaction and impact of these insecticides on the tissue of midgut has showed that the insecticide Malathion was more harmful to epithelial tissue midgut in honey bees cells than Abamectin, while Deltamethrin had the least effect. Therefore, the life of the foragers honeybee worker depends upon the health and safety of the entire members of the beehive, so it is necessary to take into account, when using the application of insecticides, the continuity of life of the entire society adoption of individuals beehive on worker bees layer depends on their life on this layer of the bee community.

Longevity of cross-fostered honey bee workers (Apis mellifera) of European and Africanized races

1981 ◽  
Vol 59 (8) ◽  
pp. 1571-1575 ◽  
Author(s):  
Mark L. Winston ◽  
Susan J. Katz
Keyword(s):  
Apis Mellifera ◽  
South America ◽  
Honey Bee ◽  
Race Differences ◽  
The Other ◽  
Partial Explanation ◽  
Africanized Bees ◽  
Honey Bee Workers

Longevities of two races of honey bee workers, European and Africanized, were compared both within colonies of their own races and within colonies of the other race. Differences in longevity were found which were likely due to inherited differences between workers of the two races. The age at which workers began foraging was one factor important in determining longevity. These results may provide a partial explanation for the success and impact of Africanized bees in South America, and also suggest that the northerly spread of these bees could be limited by worker life spans.

scholarly journals Deformed Wing Virus Infection in Honey Bees (Apis mellifera L.)

2019 ◽  
Vol 56 (4) ◽  
pp. 636-641 ◽  
Author(s):  
Roman V. Koziy ◽  
Sarah C. Wood ◽  
Ivanna V. Kozii ◽  
Claire Janse van Rensburg ◽  
Igor Moshynskyy ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Rna Virus ◽  
Mandibular Glands ◽  
Deformed Wing Virus ◽  
Clinically Normal ◽  
Bee Health ◽  
Honey Bee Health ◽  
Honey Bee Workers

Deformed wing virus (DWV) is a single-stranded RNA virus of honey bees ( Apis mellifera L.) transmitted by the parasitic mite Varroa destructor. Although DWV represents a major threat to honey bee health worldwide, the pathological basis of DWV infection is not well documented. The objective of this study was to investigate clinicopathological and histological aspects of natural DWV infection in honey bee workers. Emergence of worker honey bees was observed in 5 colonies that were clinically affected with DWV and the newly emerged bees were collected for histopathology. DWV-affected bees were 2 times slower to emerge and had 30% higher mortality compared to clinically normal bees. Hypopharyngeal glands in bees with DWV were hypoplastic, with fewer intracytoplasmic secretory vesicles; cells affected by apoptosis were observed more frequently. Mandibular glands were hypoplastic and were lined by cuboidal epithelium in severely affected bees compared to tall columnar epithelium in nonaffected bees. The DWV load was on average 1.7 × 106 times higher ( P < .001) in the severely affected workers compared to aged-matched sister honey bee workers that were not affected by deformed wing disease based on gross examination. Thus, DWV infection is associated with prolonged emergence, increased mortality during emergence, and hypoplasia of hypopharyngeal and mandibular glands in newly emerged worker honey bees in addition to previously reported deformed wing abnormalities.

Age and Behavior of Honey Bee Workers, Apis mellifera, that Interact with Drones

Ethology ◽  
2011 ◽  
Vol 117 (5) ◽  
pp. 459-468 ◽  
Author(s):  
Tyler L. Stout ◽  
Jeremy D. Slone ◽  
Stanley S. Schneider
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bee Workers ◽  
And Behavior
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