By P. D. Evans, V. B. Wigglesworth

ISBN-10: 0120242192

ISBN-13: 9780120242191

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Extra resources for Advances in Insect Physiology, Vol. 19

Sample text

In Periplaneta americana, the removal of endocrine glands, testis transplantation and hormone injection showed that ecdysterone accelerated testis development but J H inhibited it (Blaine and Dixon, 1976). The inhibiting effect of corpora allata implantation and JH/JHA treatment upon testis development was shown in several species, including Locusta rnigratoria (Cantacuzkne and Seureau, 1970), Corcyra cephalonica (Deb and Chakravorty, 1981) and Spodoptera (Gelbic and Metwally, 1981). O n the whole, in these experiments, spermatogenesis was delayed and abnormalities in the spermatozoa were observed, especially in supernumerary larvae resulting from juvenilizing effects of the corpora allata.

Acknowledgements We thank Dr M. F. Schulz for critically reading the manuscript and making many useful suggestions. The manuscript was prepared with skill and patience by Mme E. Jeantin. References Adams, M. E. and O’Shea, M. (1983). Peptide cotransmitter at a neuromuscular junction. Science 221,286-289. , Ude, J . , Birkenbeil, H. and Penzlin, H. (1985). The distribution of a proctolin-like imrnunoreactive material in the terminal ganglion of the cockroach, Periplaneta americana. Cell Tissue Res.

And O’Shea, M. (1984). New classification of insect motoneurons: Expression of different peptide transmitters. Neurosci. Abstr. 10, 151. Worden, M. , Witten, J. L. and O’Shea, M. (1985). Proctolin is a co-transmitter for the SETi motoneuron. Neurosci. Abst. 11,327. Insect Reproduction: Regulation of Successive Steps M. Raabe Laboratoire de Neuroendocrinologie des lnsectes, Universite P. et M. 10 Concluding remarks 77 6 Accessory glands-Mating-Pheromones 80 ADVANCES IN INSECT PHYSIOLOGY VOL 19 ISBN 0-12-024219-2 Copyrrghr 01986 Academic Press lnc (London) Limrred All righfs of reproduchon m ony form reserved M.

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Advances in Insect Physiology, Vol. 19 by P. D. Evans, V. B. Wigglesworth

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