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Decadal Population Traits and Fishery of Largehead Hairtail, Trichiurus lepturus (Linnaeus, 1758) in the East China Sea

Decadal Population Traits and Fishery of Largehead Hairtail, Trichiurus lepturus (Linnaeus, 1758) in the East China Sea

Sher Khan Panhwar1,2,3, Zhou Yong Dong1,4,*, Gao Tianxiang1,3, Wang Ping5, Han Zhiqiang1, Wang Zhongming1,4 and Wang Yang1,4

1Marine Fisheries Research Institute of Zhejiang Province, China
2Fisheries College, Zhejiang Ocean University, Zhoushan, China
3Center of Excellence in Marine Biology, University of Karachi, Sindh, Pakistan
4Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan, Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Ministry of Agriculture, China
5College of Pharmaceutical Sciences,, Zhejiang University of Technology, Hangzhou, China

*      Corresponding author: [email protected]

Fig. 1.

Length cohorts of various largehead hairtail (T. lepturus) size groups from 2001-2013 catches indicating higher size groups from 2013 collections in the ECS fishing area (horizontal lines indicate target fish group).
 

Fig. 2.

Largehead hairtail (T. lepturus) growth performance index during 2001, 2004, 2009, and 2013 in the ECS fishing area.

Fig. 3.

Length-converted catch curve for largehead hairtail (T. lepturus) in the ECS (pooled data for 2001, 2004, 2009, and 2013; L∞ =484mm, K=0.22/year).

Fig. 4.

Length converted catch curve for largehead hairtail (T. lepturus) sampled during the ECS surveys for 2001, 2004, 2009, and 2013).

Fig. 5.

Estimates of growth versus total mortality for the largehead hairtail (T. lepturus) fishery.

Fig. 6.

Catch-per-unit-effort from all fishing gears targeting largehead hairtail (T. lepturus) in the ECS fishing area.

Pakistan Journal of Zoology

December

Pakistan J. Zool., Vol. 56, Iss. 6, pp. 2501-3000

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