|
Effects of water salinity on reproductive performance of the femalehatchery-reared spotted scat, Scatophagus argus (Linnaeus, 1766)broodstock |
|---|---|
| รหัสดีโอไอ | |
| Creator | 1. Jirayuth Ruensirikul 2. Sommai Chiayvareesajja |
| Title | Effects of water salinity on reproductive performance of the femalehatchery-reared spotted scat, Scatophagus argus (Linnaeus, 1766)broodstock |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2563 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 42 |
| Journal No. | 1 |
| Page no. | 95-100 |
| Keyword | spotted scat, salinity, hatchery-reared broodstock, reproductive performance, estradiol |
| URL Website | https://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | The effect of water salinity on the reproductive performance of female hatchery-reared spotted scat was investigated.Broodfish were reared in a hatchery for 14 months until maturation and selection. Selected broodfish were maintained in 1-m3tanks with holding water salinities of 5, 15, 25, and 33 ppt. The maturity of the female broodfish was monitored monthly for 4months after the experiment was initiated. Each month, their reproductive parameters were monitored and their serum 17?estradiol (E2) levels and osmolality were determined. The results showed that none of the reproductive parameters including theE2 profile and blood osmolality differed significantly between treatments except that the ovulation rate of the fish held in watersalinities of 15 and 25 ppt were significantly higher than those of other salinities (P<0.05). This finding indicated that a holdingsalinity of 1525 ppt was optimal for the culture of spotted scat broodstock in hatcheries. |
