The management of common carp fisheries using spawning potential ratio in the southeast of the Caspian Sea

Author:

Larijani Mohammad12,Kordjazi Ziya1ORCID,Patimar Rahman1,Bandani Gholamali2,Ansari Zeinab3,Jafarian Hojjat1

Affiliation:

1. Fisheries Department, Agriculture and Natural Resources Faculty Gonbad Kavous University Gonbad Kavous Iran

2. Inland waters Aquatic Stocks Research Center, Iranian Fisheries Research Institute, Agricultural Research Education and Extension Organization (AREEO) Gorgan Iran

3. Marine Biology Leningrad University Saint Petersburg Russia

Abstract

AbstractSpawning potential ratio (SPR) is an important index used by fisheries biologists and managers to determine how a fishery should be harvested to prevent recruitment overfishing. In the southeastern Caspian Sea, Iran, 3430 common carp Cyprinus carpio were caught by beach seine in 2‐week intervals of two fishing seasons in 2019 and 2020. Fork length (FL) was measured to the nearest 1 cm. The age and maturity stage of 434 specimens, including 236 females and 198 males, were estimated by scale and gonad microscopic examinations. Estimated L was 71.9 and K (growth constant) was 0.09. Instantaneous total mortality (Z) was 1.08, natural mortality (M) was 0.18, and fishing mortality (F) was 0.9. Estimated SPR at current fishing mortality (0.18) was lower than the reference point (0.4). Our findings indicated that fishing mortality should be reduced to F = 0.38 for C. carpio to meet the SPR reference point of 0.4. Further, higher minimum length limits should be set to reduce fishing mortality, and catch quotas for fishing cooperative corporations should be considered to meet the 40% SPR threshold.

Publisher

Wiley

Subject

Ecology,Aquatic Science

Reference41 articles.

1. Study on main reproductive characteristics of wild common carp, Cyprinus carpio, in Anzali lagoon;Abbasi K.;Wetland Ecobiology,2022

2. Spatial and temporal analysis of monthly streamflow deficit intensity in Gorganroud watershed, Iran;Alijani R.;Ecopersia,2016

3. Growth conditions and stock analysis of the carp (Cyprinus carpio, Linnaeus 1758) population in Gölhisar Lake;Alp A.;Turkish Journal of Zoology,2000

4. Some characteristics and size of carp (Cyprinus carpio L., 1758) population in the Lake Karamık (Afyonkarahisar/Turkey);Balik İ.;Turkish Journal of Fisheries and Aquatic Sciences,2006

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