Recent Developments in Insect Neurohormones

1. Front Matter

   Pages i-xxii

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2. Synthesis and Release Sites of Neurohormones

   • Marie Raabe

   Pages 1-68

3. Vertebrate and Invertebrate Neuropeptides in Insects

   • Marie Raabe

   Pages 69-101

4. Control of Prothoracic Gland Activity

   • Marie Raabe

   Pages 103-136

5. Regulation of Corpora Allata Activity and Juvenile Hormone Titer

   • Marie Raabe

   Pages 137-167

6. Diapause

   • Marie Raabe

   Pages 169-180

7. Reproduction

   • Marie Raabe

   Pages 181-233

8. Muscle Activity

   • Marie Raabe

   Pages 235-265

9. Ecdysis and Tanning

   • Marie Raabe

   Pages 267-287

10. Pigment Synthesis and Breakdown—Color Change

    • Marie Raabe

    Pages 289-312

11. Osmoregulation

    • Marie Raabe

    Pages 313-330

12. Metabolism

    • Marie Raabe

    Pages 331-364

13. Miscellaneous

    • Marie Raabe

    Pages 365-369

14. Back Matter

    Pages 387-485

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The most striking fact revealed by investigations of insect neurohormones is that insects are as well supplied with neurohormones as mammals, since neurohor­ mones regulate not only the functioning of the endocrine glands, prothoracic gland, and corpora allata, but also most physiological processes. Our knowledge of neurohormones developed originally from anat­ omocytological investigations and experimental studies. Today, accurate bio­ assays have been devised for studying both in vivo and in vitro physiological processes, and RIA determination has yielded knowledge of titer modifications of humoral factors. Much is also known about neurohormone purification, and several neurohormones have even been identified in different species. Immunocytochemistry has made it possible to demonstrate in their origin and release sites the presence of insect neurohormones whose structure has been elucidated. Moreover, the presence of vertebrate and invertebrate neuropeptides has been demonstrated in insects. As regards biogenic amines, methods of detection have been greatly refined and it is now possible to identify the cell bodies and axons of the main biogenic amines. Other new methods, such as cobalt chloride impregnation or Lucifer yellow staining, have revealed the axonal pathways and the location of particular neurons. The mechanisms of action of neurohormones have been investigated in several cases and the results of these investigations will be related in the chapters which follow.

• Mollusca
• Orthoptera
• Oxytocin
• enzymes
• nervous system
• neurons
• neuropeptides
• oogenesis
• spermatogenesis

• National Center for Scientific Research, Pierre and Marie Curie University, Paris, France

  Marie Raabe

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