Controlled accumulation of vitellin inBombyxeggs
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Abstract:
Summary Implantation of female fat body and ovary discs into the young male pupae brought about vitellin accumulation in the mature eggs developed in male hosts. The amounts of vitellin increased according to the increasing amounts of implanted fat body, and the vitellin synthesis activity of female fat body in male hosts was similar to that found in female hosts. When implanted into male pupae, larval fat body having no ability to produce vitellogenin in situ could bring about vitellin accumulation in the eggs. No accumulation of vitellin was induced by implantation of male fat body.Keywords:
Vitellogenin
Abstract The larva and pupa of Notonesius aucklandicus Kuschel, living in saturated peat soil on the Auckland Islands, some 500 km south of New Zealand, are described and figured. The ‘rat-tail’ type of aquatic adaptation in the larva appears to be unique among Coleoptera, although an evolutionary progression towards it can be traced among Indian weevils.
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Caddisfly
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Cordyceps militaris
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