THE EFFECT OF Varroa jacobsoni INVASION ON SOME BIOLOGICAL ASPECTS OF HONEYBEE AT SHARKIA GOVERNORATE
Mahmoud Abd El-Atti Abd EI-Monem Salama;
Abstract
SUMMARY AND CONCLUSION
The present study has been carried out to exanune the morphological structure of the broodmite Varroajacobsoni with light and scanning electron microscopes and its effect on the morphological and some physiological alterations of honeybees at Sharkia Governorate, since the infestation of V. jacobsoni is considered nowadays one of the major pathogenic agents and a serious problem in apiculture.
The data obtained from the present thesis can be summarized as fol1ows:
1- Light and SEM of V. jacobsoni
Light and SEM revealed that there are many morphological differences between adult male and female Varroa.
The male is smaller, paler, poorly sclerotized and the chelicera are
not pointed and modified into a large spermatodactyle (sperm transfer).
The female is larger, darker, well sclerotized and the chelicera are pointed and modified for piercing the soft intersegmental cuticle of its bee host and sucking the haemolymph. It has four different types of setae.
The ambulacrum of the female mite seen with the help of SEM has not a sucker structure as believed before but it is a claw-like complex with serrated edges.
2- Morphological malformations of honeybee workers
Malformations of wings were recorded in honeybee workers as a result of infestation. The degree of malformation was depending on the
75
Summary and Conclusion
degree of infestation. Also a pupal abnonnalities such as short abdomens were noticed for the infested pupae.
The present study has been carried out to exanune the morphological structure of the broodmite Varroajacobsoni with light and scanning electron microscopes and its effect on the morphological and some physiological alterations of honeybees at Sharkia Governorate, since the infestation of V. jacobsoni is considered nowadays one of the major pathogenic agents and a serious problem in apiculture.
The data obtained from the present thesis can be summarized as fol1ows:
1- Light and SEM of V. jacobsoni
Light and SEM revealed that there are many morphological differences between adult male and female Varroa.
The male is smaller, paler, poorly sclerotized and the chelicera are
not pointed and modified into a large spermatodactyle (sperm transfer).
The female is larger, darker, well sclerotized and the chelicera are pointed and modified for piercing the soft intersegmental cuticle of its bee host and sucking the haemolymph. It has four different types of setae.
The ambulacrum of the female mite seen with the help of SEM has not a sucker structure as believed before but it is a claw-like complex with serrated edges.
2- Morphological malformations of honeybee workers
Malformations of wings were recorded in honeybee workers as a result of infestation. The degree of malformation was depending on the
75
Summary and Conclusion
degree of infestation. Also a pupal abnonnalities such as short abdomens were noticed for the infested pupae.
Other data
| Title | THE EFFECT OF Varroa jacobsoni INVASION ON SOME BIOLOGICAL ASPECTS OF HONEYBEE AT SHARKIA GOVERNORATE | Other Titles | تأثير إصابة الحلم على بعض النواحى البيولوجيه لنحل العسل بمحافظة الشرقيه | Authors | Mahmoud Abd El-Atti Abd EI-Monem Salama | Issue Date | 1996 |
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