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FACTORS AFFECTING CORPORA ALLATA ACTIVITY IN THE ADULT LADY BEETLE COCCINELLA SEPTEMPUNCTATA L.
Author(s) -
Guan Xuechen,
Wang Zongshun
Publication year - 1995
Publication title -
insect science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 45
eISSN - 1744-7917
pISSN - 1672-9609
DOI - 10.1111/j.1744-7917.1995.tb00023.x
Subject(s) - corpus allatum , biology , coccinella septempunctata , juvenile hormone , ovary , reproduction , zoology , endocrinology , medicine , botany , hormone , ecology , coccinellidae , predator , predation
Corpora allata are the defined site of juvenile hormone (JH) biosynthesis in reproductive adult insects and their activity is regulated by intrinsic and extrinsic factors. In the adult lady beetle Coccinella septempunctata , it has been well established that the development of ovaries is controlled by JH (Guan 1987). The present study aims at the elucidation of the influence of some factors regulating reproduction of the lady beetle. They include topical application of JH analogues, presence of neuropeptides in the extract from the brain, as well as the development of ovary and type of food on CA activity. JH synthesis in CA is monitored with radiochemical assay and immunoelectrophoresis.