Research Article: Length based spawning potential ratio (LBSPR) of javelin grunter, Pomadasys kaakan (Cuvier, 1830) in the Persian Gulf and Oman Sea

Authors

  • A. Vahabnezhad Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
  • Gh. Daryanbard Caspian Sea Ecology Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO), Sari, Iran
  • S.A. Hashemi . Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Chabahar, Iran
  • S.A. Taghavimotlagh Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
Abstract:

Length-Based Spawning Potential Ratio (LB-SPR) model was applied to describe the status of Javelin grunter, Pomadasys kaakan in the Persian Gulf and Oman Sea. From April 2002 to March 2019. 45,489 specimens were collected from fish landing sites monthly, and their length (FL) and weight were measured. The results of the present study showed that different gears captured most of the P. kaakan before first spawning time. The maximum-recorded length for this species in the study area was 60 cm FL with a mean length of 43.0±4.73 cm. The M/K value corresponds to P. kaakan maturation was calculated as 0.53. Based on the LB-SPR assessment model, it could be concluded that these species become vulnerable to fishing at its maturation’ size (48 cm). The range of annual SPR of P. kaakan was estimated between 0.14 to 0.18 in the Persian Gulf and Oman Sea (Iranian waters), which is even lower than the threshold value of 0.2. Such results suggest that the exploitation of P. kaakan occurred above the maximum sustainable limit and has a confounding effect on successful recruitment and juvenile survival of this species. The Spawning Potential Ratio of P. kaakan based on time series analysis, as a biological reference point was estimated below 0.2, which means for achieving a higher SPR level and sustainable fisheries, the rate of fishing mortality should be reduced constantly.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Research Article: Reproduction and spawning patterns of Atule mate (Cuvier, 1833) in the Persian Gulf & Oman Sea, Hormozgan coastal waters

Reproduction and spawning patterns of the Yellowtail scad (Atule mate) were studied in the Persian Gulf and Oman Sea (Hormozgan coastal waters) from December 2016 to November 2017. A total of 447 fish were collected from Bandar Lengeh, Qeshm Island, Bandar Abbas, and Bandar Jask landing sites. Minimum and maximum fork lengths of this species were 10 and 33 cm, with average 20.63±1.73 cm. The to...

full text

Research Article: Life history traits of ribbonfish Trichiurus lepturus (Linnaeus, 1758) in the Persian Gulf and Oman Sea

Ribbonfish, Trichiurus lepturus (Linnaeus, 1758), is an important component of subsistence fisheries throughout its tropical and subtropical distribution. The catch rate of ribbonfish has increased seven-fold in a decade in the Persian Gulf and Oman Sea. We collected monthly biological samples from T. lepturus, to estimate growth and mortality parameters, and identify species reproductive patte...

full text

Reproduction and spawning patterns of the Scomberomorus commerson in the Iranian coastal waters of the Persian Gulf & Oman Sea

  Reproduction and spawning patterns of the king fish (Scomberomorus commerson) were studied in the Persian Gulf (Hormozgan Province) and Oman Sea from Oct 2006 to Sep 2007. A total of 1120 fish was collected from different landing sites along the Iranian waters. Yearly analysis of the reproductive stages and gonadosomatic index showed a single reproductive cycle beginning in March and continue...

full text

Reproduction and spawning patterns of the Scomberomorus commerson in the Iranian coastal waters of the Persian Gulf & Oman Sea

  Reproduction and spawning patterns of the king fish (Scomberomorus commerson) were studied in the Persian Gulf (Hormozgan Province) and Oman Sea from Oct 2006 to Sep 2007. A total of 1120 fish was collected from different landing sites along the Iranian waters. Yearly analysis of the reproductive stages and gonadosomatic index showed a single reproductive cycle beginning in March and continue...

full text

Evaluation of some feeding indices of Pomadasys kaakan in the Northern Persian Gulf

  In this paper the Vacuity Index (VI), Fullness Index (FI) and Food Preference Index (FPI) for the stomach contents of Pomadasys kaakan were evaluated to assess the quantity and kind of food which this fish consumes in the Persian Gulf. A total of 227 specimens were collected from fishing trawlers or landings from November 2005 to September 2006. 24.7% of stomachs were full, 11.9% were semi-fu...

full text

Evaluation of some feeding indices of Pomadasys kaakan in the Northern Persian Gulf

  In this paper the Vacuity Index (VI), Fullness Index (FI) and Food Preference Index (FPI) for the stomach contents of Pomadasys kaakan were evaluated to assess the quantity and kind of food which this fish consumes in the Persian Gulf. A total of 227 specimens were collected from fishing trawlers or landings from November 2005 to September 2006. 24.7% of stomachs were full, 11.9% were semi-fu...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 20  issue 6

pages  1560- 1572

publication date 2021-11

By following a journal you will be notified via email when a new issue of this journal is published.

Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023