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http://dx.doi.org/10.3796/KSFT.2004.40.3.169

Study on the Improvement of Gill Nets and Trap Nets Fishing for the Resource Management at the Coastal Area of Yellow Sea - Mesh Selectivity of Gill Nets for Croacker, Miichthys miiuy -  

Chang, Hy-Young (Kunsan National University)
Cho, Bong-Kon (Kunsan National University)
Park, Jong-Soo (Kunsan National University)
Doo, Sung-Kyun (Kunsan National University)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.40, no.3, 2004 , pp. 169-175 More about this Journal
Abstract
In order to examine the mesh selectivity and optimum mesh size of gill nets for croaker, Milichthys miiuy, the field experiments were carried out during Aug. 10 to 14, 2002 and Aug. 10 to 17, 2003 at the caostal area of Imja-Do, Shinan, Jeonnam province. The experimental fishing gears were used in two set of gill nets, which one set was consisted of 12 sheets of gill nets, and each set was connected alternatively 4 different sheets that were 129mm, 135mm, 144mm and 150mm in mesh size. The analysis of mesh selectivity curve was done by Kitahara's method. The results obtained are summerized as follows : 1. The total number of catch by the experimental fishing of gill nets for croaker was 719, and it was consisted of 526 croakers (73.1%), 168 blue crabs (23.4%), 17 harvest fishes (2.4%) and 8 other fishes (1.1%). 2. The value of maximum 1/m on the mesh selectivity curve was estimated at 6.91. 3. The value of 1/m on the 50% selection range was estimated at 5.62${\sim}$80.3, and the selection width was 2.41. 4. The optimum mesh size of gill nets for croaker was estimated 142mm, and the 50% selection range of total length of croaker was 798${\sim}$1,140mm.
Keywords
croaker; gill nets; mesh selectivity; optimum mesh size; Kitahara's method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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