Libini, C L and Albert Idu, K A and Manjumol, C C and Kripa, V and Mohamed, K S (2018) Growth, survival and byssal attachment of the blacklip pearl oyster Pinctada margaritifera (Linnaeus 1758) spat exposed to different salinities. Indian Journal of Fisheries, 65 (4). pp. 68-74.
|
Text
K S Mohammed_V Kripa_2018_Indian Journal of Fisheries_65-4_Growth, survival and byssal attachment of the blacklip pearl oyster.pdf.pdf Download (694kB) | Preview |
Abstract
The influence of salinity on growth, survival and byssal fibre attachment of the blacklip pearl oyster, Pinctada margaritifera spat was assessed. P. margaritifera enjoys a coastal distribution in the intertidal reef flats of Andaman and Nicobar Islands, with maximum density at 5 -10 m depth, where drastic changes in environmental parameters such as salinity, temperature and turbidity occur. Spat showed comparatively good growth in terms of instantaneous growth rates (IGRs) of dorso-ventral measurement (DVM), antero-posterior measurement (APM) and total weight (TWT) in a wide range of test salinities from 19 to 37 psu; IGRs were drastically decreased in spat reared at lower and higher salinities outside of this range. The highlight of the present study was better growth performance and 100% survival of P. margaritifera spat at lower salinity levels (22-28 psu) than in the ambient salinity (31 psu). The study also showed that sudden exposure to a higher salinity (above 40 psu) will be helpful for detachment of P. margaritifera spat from settlement tanks in the hatchery to facilitate stress-free spat transfer to sea farming systems. This will be useful in adopting the Japanese technique on post-operative culture for producing high quality pearls from P. margaritifera.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Blacklip pearl oyster, Byssal attachment, Growth, Pinctada margaritifera, Salinity tolerance, Spat, Survival |
| Subjects: | Molluscan Fisheries > Pearl oyster |
| Divisions: | CMFRI-Kochi > Marine Capture > Molluscan Fisheries Division Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Molluscan Fisheries Division CMFRI-Kochi > Marine Capture > Molluscan Fisheries Division Subject Area > CMFRI-Kochi > Marine Capture > Molluscan Fisheries Division |
| Depositing User: | Arun Surendran |
| Date Deposited: | 09 Jan 2019 04:26 |
| Last Modified: | 23 Feb 2019 06:29 |
| URI: | http://eprints.cmfri.org.in/id/eprint/13349 |
Actions (login required)
 |
View Item |
Altmetric
Altmetric