Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia
An investigation on population dynamic parameters like growth, natural mortality, fishing mortality and recruitment pattern of clupeid fish, Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia was conducted from September 2015 to August 2016. Monthly length frequen...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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Faculty of Agriculture, Universiti Putra Malaysia
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/77353/1/8TH%20IAC%20%E2%80%93%206TH%20ISFA%202018-34.pdf |
| _version_ | 1825950837134852096 |
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| author | Mohd Khatib, Mohd Azim Sarker, S. M. Nurul Amin Harmuj Ali Arshad, Aziz Md. Yusoff, Fatimah |
| author_facet | Mohd Khatib, Mohd Azim Sarker, S. M. Nurul Amin Harmuj Ali Arshad, Aziz Md. Yusoff, Fatimah |
| author_sort | Mohd Khatib, Mohd Azim |
| collection | UPM |
| description | An investigation on population dynamic parameters like growth, natural mortality, fishing mortality and recruitment pattern of clupeid fish, Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia was conducted from September 2015 to August 2016. Monthly length frequency data of E. thoracata were analyzed by FiSAT software to evaluate the mortality rates and its exploitation level. The relationship between total length and body weight was estimated as W= 0.0009TL2.9957 (R2 = 0.8954). Asymptotic length (L) and growth co-efficient (K) was estimated at 10.86 cm and 1.70 yr-1, respectively. Total mortality (Z), natural mortality (M) and fishing mortality (F) was calculated at 5.84 yr-1, 3.47 yr-1 and 2.38 yr-1, respectively. Exploitation level (E) of E. thoracata was found to be 0.41. The fishing pressure was 18% below the optimum level of exploitation (E = 0.50). It is revealed that the stock of E. thoracata might be under-exploited in Matang Mangrove Estuaries. |
| first_indexed | 2024-03-06T10:20:43Z |
| format | Conference or Workshop Item |
| id | upm.eprints-77353 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:20:43Z |
| publishDate | 2018 |
| publisher | Faculty of Agriculture, Universiti Putra Malaysia |
| record_format | dspace |
| spelling | upm.eprints-773532020-03-05T06:27:06Z http://psasir.upm.edu.my/id/eprint/77353/ Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia Mohd Khatib, Mohd Azim Sarker, S. M. Nurul Amin Harmuj Ali Arshad, Aziz Md. Yusoff, Fatimah An investigation on population dynamic parameters like growth, natural mortality, fishing mortality and recruitment pattern of clupeid fish, Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia was conducted from September 2015 to August 2016. Monthly length frequency data of E. thoracata were analyzed by FiSAT software to evaluate the mortality rates and its exploitation level. The relationship between total length and body weight was estimated as W= 0.0009TL2.9957 (R2 = 0.8954). Asymptotic length (L) and growth co-efficient (K) was estimated at 10.86 cm and 1.70 yr-1, respectively. Total mortality (Z), natural mortality (M) and fishing mortality (F) was calculated at 5.84 yr-1, 3.47 yr-1 and 2.38 yr-1, respectively. Exploitation level (E) of E. thoracata was found to be 0.41. The fishing pressure was 18% below the optimum level of exploitation (E = 0.50). It is revealed that the stock of E. thoracata might be under-exploited in Matang Mangrove Estuaries. Faculty of Agriculture, Universiti Putra Malaysia 2018 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/77353/1/8TH%20IAC%20%E2%80%93%206TH%20ISFA%202018-34.pdf Mohd Khatib, Mohd Azim and Sarker, S. M. Nurul Amin Harmuj Ali and Arshad, Aziz and Md. Yusoff, Fatimah (2018) Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia. In: Joint Symposium of the 8th International Agriculture Congress 2018 and 6th International Symposium for Food & Agriculture 2018 (8th IAC – 6th ISFA 2018), 13-15 Nov. 2018, Auditorium Rashdan Baba, TNCPI Building, Universiti Putra Malaysia. (pp. 169-172). |
| spellingShingle | Mohd Khatib, Mohd Azim Sarker, S. M. Nurul Amin Harmuj Ali Arshad, Aziz Md. Yusoff, Fatimah Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia |
| title | Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia |
| title_full | Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia |
| title_fullStr | Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia |
| title_full_unstemmed | Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia |
| title_short | Population dynamics of Escualosa thoracata (Valenciennes, 1847) in Matang Mangrove Estuaries, Perak, Malaysia |
| title_sort | population dynamics of escualosa thoracata valenciennes 1847 in matang mangrove estuaries perak malaysia |
| url | http://psasir.upm.edu.my/id/eprint/77353/1/8TH%20IAC%20%E2%80%93%206TH%20ISFA%202018-34.pdf |
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