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Gonadotropic action of juvenile hormone iii on females of blattella germanica either allatectomized or long term starved


, : Gonadotropic action of juvenile hormone iii on females of blattella germanica either allatectomized or long term starved. Miscellania Zoologica (Barcelona) 12: 121-124

In Blattella germanica both, starvation and allatectomy, determine an inhibition of oocyte development that can be corrected by a topical application of the gonadotrophic hormone of this species, juvenile hormone III (JH III). While a single dose of 10 .mu.g of JH III is enough to induce for allatectomized females a normal gonadotrophic cycle, two doses of 10 .mu.g administered according to a physiological pattern are necessary for starved females. The results obtained suggest tht starvation in B. germanica induces a dual effect on vitellogenesis, i.e. determining a low concentration of nutrients (thus making more difficult the vitellogenin synthesis), and inducing a low activity on the corpora allata (which release JH at lower rates).

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