|
Relationship between the carapace width and body weight incrementsand the confirmation of Stage 1 ovary after molting of the immatureorange mud crab, Scylla olivacea, (Herbst, 1796) in captivity |
|---|---|
| รหัสดีโอไอ | |
| Creator | 1. Adnan Amin-Safwan 2. Harman Muhd-Farouk 3. Nurul Hasyima-Ismail 4. Hairul Hafiz Mahsol 5. Mhd Ikhwanuddin |
| Title | Relationship between the carapace width and body weight incrementsand the confirmation of Stage 1 ovary after molting of the immatureorange mud crab, Scylla olivacea, (Herbst, 1796) in captivity |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2562 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 41 |
| Journal No. | 6 |
| Page no. | 1226-1232 |
| Keyword | molting, S. olivacea, carapace width, body weight, maturation |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | This study describes the relationships between the carapace width (CW) and body weight (BW) increments and theconfirmation of Stage 1 ovary after the molting of immature orange mud crabs, Scylla olivacea, in captivity. Morphologicalcoloration and histological assessments were done on 165 immature female S. olivacea. Healthy crabs were sampled from theSetiu Wetlands in the coastal waters of Terengganu on the Malaysian Peninsula from July to September 2015. Thirty crabs weresacrificed for a preliminary study as a standard (control) in which the gonads (if available) were dissected for histological study.The remaining crabs (n=135) were selected for subsequent analysis (limb autotomy). Compared to the controls, the molted crabsgenerally did not produce any difference in the stage of the ovaries (remaining in Stage 1) but were observed to have largeroocytes. This demonstrated that the limb autotomy technique may activate hormone regulation, thus triggering vitellogenesis inthe mud crab. There were also positive correlations between CW and BW (P=0.001, P<0.01) and significant differences throughregression analysis (P=0.002, P<0.01) with the equation y = 2.61x + 6.27 (R2=0.069). These results can be useful for developingbaseline data for further crab management in Malaysia. |
