A survey on catch of Penaeus indicus brood stocks by artisonal shrimpfishing in South of Iran

摘要

Brood stock shrimp catches have been exploited in important fishing ground of Hormozgan province since 1994. A survey of brood stock shrimp catch was carried out during March, April, May, June and July of 2001 and 2002. Data were collected by artisonal shrimp fishing trawlers biweakly. Result showed that P. indicus was the dominant shrimp species in Jask and Sirik areas with 59.5% and 25% respectively. Other species, such as, P. semisulcatus (20.5-20%), P. merguiensis (13.5-19.5%), Metapenaeus affinis (5.5-16.5%), Metapenaeus stebengi (0-14.5%) and Parapenaeus stylifera (1-4.5%) were found in the total catches of Jask and Sirik areas respectively. CLm50 for P. indicus females were 34.7mm in Jask and 34.5mm in the Sirik areas. Tukey test analysis showed that average carapace lengths of P. indicus females in Jask were more than Sirik area, with different subsequent (945+0.05). Sex ratio analysis showed a ration not 1:1 between female and males. Maximum distribution of P. indicus, P. semisulcatus and P. merguiensis spawners, were found during (March to June) in Jask and (June to July) in Sirik areas.