| Autor: |
Brown, Mark R., Sieglaff, Douglas H., Rees, Huw H. |
| Předmět: |
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| Zdroj: |
Annual Review of Entomology; 2009, Vol. 54 Issue 1, p105-125, 21p, 1 Diagram |
| Abstrakt: |
Ecdysteroids are multifunctional hormones in male and female arthropods and are stored in oocytes for use during enibryogenesis. Ecdysteroid biosynthesis and its hormonal regulation are demonstrated for insect gonads, but not for the gonads of other arthropods. The Y-organ in the cephalothorax of crustaceans and the integument of ticks are sources of secreted ecdysteroids in adults, as in earlier stages, but the tissue source is not known for adults in many arthropod groups. Ecdysteroid metabolism occurs in several tissues of adult arthropods. This review summarizes the evidence for ecdysteroid biosynthesis by gonads and its metabolism in adult arthropods and considers the apparent uniqueness of ecdysteroid hormones in arthropods, given the predominance of vertebrate-type steroids in sister invertebrate groups and vertebrates. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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