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| Estimation of Biological Parameters in Common Carp Cyp rinus carpio Collected in the Yangtze River Waterway in Poyang Lake by Support of FiSAT ⅡSoftware |
| WU Bin,FANG Chunlin,HE Gang,FU Peifeng,XIONG Xiaoying,ZHOU Huiming,ZHANG Yanping,WANG Sheng,WANG Qingping |
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Abstract Growth ,mortality and recruitment were estimated based on length‐frequency data in common carp Cyprinus carpio collected from the set net fishery survey in Poyang Lake through the Yangtze River Waterway from March ,2012 to February ,2013 ,using FiSAT Ⅱ software .The results showed that the common carp population had body length of 55—720 mm ,and that the relationship between body length (L ,mm) and body weight (m ,g) was expressed as m = 3 .021 × 10‐5 L2 .955 (r2 =0 .978 ,n= 549) .The es‐timated parameter for von Bertalanffy growth equation was found to be L ∞ = 753 .38 mm ,k= 0 .170 ,t0 =-0 .687 .Total mortality (Z) was estimated as 0 .701a‐1 ,natural mortality (M ) 0 .362 a-1 ,and fishing mor‐tality (F) 0 .339 a-1 .The recruitment pattern showed a continuous trend with double peaks in March and June .The exploitation rate of 0 .484 was very close to the maximal catching rate of Emax0 .472 in the knife-edge model ,indicating that the current fishing activity was very high in Poyang Lake through the Yan‐gtze River Waterway .Meanwhile ,the population intrinsic dynamics needs to be further studied .
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Received: 25 April 2015
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| Cite this article: |
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WU Bin,FANG Chunlin,HE Gang, et al. Estimation of Biological Parameters in Common Carp Cyp rinus carpio Collected in the Yangtze River Waterway in Poyang Lake by Support of FiSAT ⅡSoftware[J]. Fisheries Science, 2015, (4): 256-260.
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| URL: |
| http://www.shchkx.com/EN/ OR http://www.shchkx.com/EN/Y2015/V/I4/256 |
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