Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia
Population parameters of male and female A. japonicus were studied using the monthly length frequency data to evaluate the mortality rates and its exploitation level. The sex ratio (male: Female) was found at 1: 0.94. Asymptotic length (L∞) was 25.20 mm and 28.88 mm for male and female, respectively...
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| Format: | Article |
| Language: | English |
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Academic Journals
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/23805/ http://psasir.upm.edu.my/id/eprint/23805/1/23805.pdf |
| _version_ | 1848844860927246336 |
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| author | Abdulaziz A., Alsayed Amani Sarker, S. M. Nurul Amin Harmuj Ali Arshad, Aziz Rahman, Md. Aminur |
| author_facet | Abdulaziz A., Alsayed Amani Sarker, S. M. Nurul Amin Harmuj Ali Arshad, Aziz Rahman, Md. Aminur |
| author_sort | Abdulaziz A., Alsayed Amani |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Population parameters of male and female A. japonicus were studied using the monthly length frequency data to evaluate the mortality rates and its exploitation level. The sex ratio (male: Female) was found at 1: 0.94. Asymptotic length (L∞) was 25.20 mm and 28.88 mm for male and female, respectively. Growth co-efficient (K) for males and females was estimated at 1.80 and 1.30 year-1, respectively. Total mortality (Z) was calculated at 5.98 and 4.44 year-1 for male and female of A. japonicus respectively. Natural mortality (M) was 2.82 and 2.19 year-1 for the male and female shrimps. The fishing mortality (F) was 3.16 year-1 for male and 2.25 year-1 for female. Exploitation level (E) for male and female of A. japonicus was calculated at 0.53 and 0.51. The exploitation level was slightly over (E>0.50) the optimum level of exploitation (p = 0.50). The stock of A. japonicus was found to be slightly over exploited in Tanjung Dawai estuarine waters. |
| first_indexed | 2025-11-15T08:37:38Z |
| format | Article |
| id | upm-23805 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:37:38Z |
| publishDate | 2011 |
| publisher | Academic Journals |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-238052018-09-26T02:01:27Z http://psasir.upm.edu.my/id/eprint/23805/ Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia Abdulaziz A., Alsayed Amani Sarker, S. M. Nurul Amin Harmuj Ali Arshad, Aziz Rahman, Md. Aminur Population parameters of male and female A. japonicus were studied using the monthly length frequency data to evaluate the mortality rates and its exploitation level. The sex ratio (male: Female) was found at 1: 0.94. Asymptotic length (L∞) was 25.20 mm and 28.88 mm for male and female, respectively. Growth co-efficient (K) for males and females was estimated at 1.80 and 1.30 year-1, respectively. Total mortality (Z) was calculated at 5.98 and 4.44 year-1 for male and female of A. japonicus respectively. Natural mortality (M) was 2.82 and 2.19 year-1 for the male and female shrimps. The fishing mortality (F) was 3.16 year-1 for male and 2.25 year-1 for female. Exploitation level (E) for male and female of A. japonicus was calculated at 0.53 and 0.51. The exploitation level was slightly over (E>0.50) the optimum level of exploitation (p = 0.50). The stock of A. japonicus was found to be slightly over exploited in Tanjung Dawai estuarine waters. Academic Journals 2011 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/23805/1/23805.pdf Abdulaziz A., Alsayed Amani and Sarker, S. M. Nurul Amin Harmuj Ali and Arshad, Aziz and Rahman, Md. Aminur (2011) Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia. Journal of Fisheries and Aquatic Science, 6 (7). pp. 751-760. ISSN 1816-4927; ESSN: 1996-0751 https://scialert.net/abstract/?doi=jfas.2011.751.760 10.3923/jfas.2011.751.760 |
| spellingShingle | Abdulaziz A., Alsayed Amani Sarker, S. M. Nurul Amin Harmuj Ali Arshad, Aziz Rahman, Md. Aminur Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia |
| title | Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia |
| title_full | Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia |
| title_fullStr | Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia |
| title_full_unstemmed | Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia |
| title_short | Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia |
| title_sort | population dynamics of sergestid shrimps acetes japonicus in the estuary of tanjung dawai, kedah, malaysia |
| url | http://psasir.upm.edu.my/id/eprint/23805/ http://psasir.upm.edu.my/id/eprint/23805/ http://psasir.upm.edu.my/id/eprint/23805/ http://psasir.upm.edu.my/id/eprint/23805/1/23805.pdf |