Khalil, Munawar and Yasin, Zulfigar and Hwai, Tan Shau (2017) Reproductive biology of blood cockle Anadara granosa (Bivalvia: Arcidae) in the northern region of the Strait of Malacca. Ocean Science Journal, 52. ISSN Print ISSN 1738-5261 Online ISSN 2005-7172
Full text not available from this repository.Abstract
A study on the reproductive cycle of the blood cockle Anadara granosa (Bivalvia: Arcidae) was conducted at three different areas in the northern region of the Strait of Malacca. A total of 1,920 samples of adult A. granosa (38–71 mm length) were collected from June 2009 until September 2010. Qualitative techniques (gonadal microscopic fresh smear test and histology analysis) as well as quantitative techniques (analysis of condition index and gonadal index) were used to predict monthly gonadal development stages of A. granosa. The gonadal index of A. granosa from Banda Aceh (Indonesia) (r = 0.469, P > 0.05) and Pulau Pinang (Malaysia) (r = 0.123, P > 0.05) did not show any correlation to their condition index, whereas the gonadal index of A. granosa from Lhokseumawe (Indonesia) (r = 0.609, P < 0.05) showed moderate positive correlation to the condition index. During the 16 month sampling period, four reproductive cycles were observed: each from three to six months. The process of releasing gametes is termed dribble spawning, and is the same in all populations. The principle component analysis (PCA) indicated that A. granosa reproduction was affected by interaction between internal physiological factors and indigenous environmental factors. In all sampling areas, phytoplankton density played a key role in the reproductive cycle in A. granosa. Information on the reproductive biology of this species is essential for species management and to improve the sustainability practices of the fisheries industry. These findings will provide basic information on the biology of the blood cockle A. granosa for stock management in the region. Key words blood cocklereproductive cyclegametogenesisgonadal indexcondition index
| Item Type: | Article |
|---|---|
| Subjects: | S Agriculture > SH Aquaculture. Fisheries. Angling |
| Divisions: | Faculty of Agriculture > Department of Aquaculture |
| Depositing User: | Mr. Munawar Khalil |
| Date Deposited: | 21 Mar 2017 00:12 |
| Last Modified: | 21 Mar 2017 00:12 |
| URI: | http://repository.unimal.ac.id/id/eprint/2610 |
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