Hormones and Reproduction
| Autor: | Jim Hardie |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
medicine.medical_specialty
Ecdysteroid animal structures integumentary system media_common.quotation_subject fungi Biology chemistry.chemical_compound Endocrinology chemistry Hormone receptor Internal medicine Juvenile hormone medicine Reproduction Metamorphosis Moulting Choriogenesis Hormone media_common |
| Zdroj: | Insect Reproduction ISBN: 9781351073608 |
| DOI: | 10.1201/9781351073608-4 |
| Popis: | This chapter explores the endocrine control of reproduction in female and male insects. The major gonadotropic hormones are juvenile hormones (JHs) and ecdysteroids, the same hormones that control metamorphosis and moulting. This parsimony in hormone complement occurs because the windows of sensitivity for development and reproduction are, to an extent, isolated from each other and the temporal distribution of hormone receptors differs between different tissues. In adult females, ecdysteroid synthesis occurs in the ovaries, or more specifically in the follicle cells of the ovaries, and in males they are synthesized by the testes, while other possible sites for production have been suggested. Ecdysteroids are produced by the ovaries of adult cockroaches, but their role has not been fully elucidated. It has been proposed that the co-occurrence of ecdysteroid and choriogenesis might indicate a role at this stage in egg development. |
| Databáze: | OpenAIRE |
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