Abstracts
STRUCTURE AND FUNCTION OF THE ANAL VESICLE OF THE LARVA OF APANTELES (HYMENOPTERA: BRACONIDAE) |
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M.F.S. TAWFIK AND S.M. ABOL-ELA Laboratory of Biological Control; Faculty of Agriculture; University of Cairo , Giza , Egypt |
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ABSTRACT The fine structure of the anal vesicle in different larval instars of the braconid Apanteles glomezanss was studied aiming to shed light on its function. It appears that this organ, in the first larval instar, absorbs fat from the haemolymph of the host (caterpillars of Pieris brassicae) and at the same time may be excretory The specialized systems at this stage, are not yet functioning It is only during the second stage that these systems are working and consequently, the vesicle no more performs food ingestion and to a large extent excretion. |
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Key Words: Apanteles glomeratus L Pieris brassicae L ; vesicle ingestion, excretion , locomotion |
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