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Stock assessment and management implications of golden grey mullet ( L iza aurata Risso, 1810) in I ranian waters of the C aspian S ea
Author(s) -
Fazli H.,
Daryanabard G. R.,
Abdolmaleki S.,
Bandani G. A.
Publication year - 2013
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.12003
Subject(s) - mullet , biology , fishery , stock assessment , mugil , stock (firearms) , biomass (ecology) , fishing , fish <actinopterygii> , ecology , geography , archaeology
Summary Recent changes in the C aspian ecosystem have caused changes in the absolute and relative abundance of the commercially important golden grey mullet ( L iza aurata ) in Iranian waters. In order to adjust for these changes a more rigorous management of this fishery resource is required. The present study examines the biomass of golden grey mullet during 1991–2010. Estimates of f MSY , yield‐per‐recruit and spawning biomass‐per‐recruit are presented for various harvesting strategies of F max , F 0.1 , F 35% , and a method is proposed for estimating acceptable biological catch ( ABC ) that accounts for large differences in the quality and quantity of information and available data. Biomass estimates of golden grey mullet, derived from a biomass‐based cohort analysis, increased from 13 527 tonnes in 1991–1992 to 20 100 t in 2000–2001, and declined to the lowest level (11 000 t) in 2007–2008. In 2009–2010, the total biomass was estimated to be 14 400 t. The ABC was estimated at 2200 t in 2010. Golden grey mullet is vulnerable to environmental factors, which should be considered in the stock assessment and management of the fish.