Action of eyestalks on the ovary inRhithropanopeus harrisiiandCrangon crangon(Crustacea: Decapoda)
✍ Scribed by A. Bomirski; E. Klek
- Book ID
- 104755367
- Publisher
- Springer-Verlag
- Year
- 1974
- Tongue
- English
- Weight
- 912 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0025-3162
No coin nor oath required. For personal study only.
✦ Synopsis
The annual cycle of ovarian activity and eyestalk effects on the ovary in different phases of its activity were examined in the crab Rhithropanopeus harrisii Gould ssp. tridentatus Maitland, and the sand shrimp Crangon vrangon L. In both species, the annual ovarian cycle consists of two phases ofvitellogenesis and the resting phase. In/L harrisii, the eyestalks exert an inhibitory effect on vitellogenesis during the phase of vitellogenesis outside the breeding season, and are necessary for the process of oviposition during the breeding season. In C. crangon, ovary-inhibiting hormone is present in the eyestalks outside the breeding season, and has not been detected during this season. The resting phase of the ovary after the breeding season is caused by the ovary-inhibiting hormone. 1%males of C. crangon are a suitable material for testing ovary-inhibiting hormone activity, while female R. harrisii are not.