Iranian Journal of Fisheries Sciences
مجله علوم شیلاتی ایران
IJFS
Agriculture
http://jifro.ir
1
admin
1562-2916
10.18869/acadpub.ijfs
en
jalali
1400
8
1
gregorian
2021
11
1
20
6
online
1
fulltext
en
Research Article: Length based spawning potential ratio (LBSPR) of javelin grunter, Pomadasys kaakan (Cuvier, 1830) in the Persian Gulf and Oman Sea
Stock assessment
Stock assessment
پژوهشي
Orginal research papers
Length-Based Spawning Potential Ratio (LB-SPR) model was applied to describe the status of Javelin grunter, <em>Pomadasys kaakan</em> 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 <em>P. kaakan</em> 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 <em>P. kaakan</em> 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 <em>P. kaakan</em> 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<span dir="RTL">.</span> Such results suggest that the exploitation of <em>P. kaakan</em> 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 <em>P. kaakan </em>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.
Length frequency, Sustainability, Spawning Potential Ratio, Pomadasys kaakan, Persian Gulf, Oman Sea
1560
1572
http://jifro.ir/browse.php?a_code=A-10-86-5&slc_lang=en&sid=1
A.
Vahabnezhad
AVN9400@gmail.com
100319475328460042711
100319475328460042711
Yes
Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
S.A.
Hashemi
seyedahmad91@gmail.com
100319475328460042712
100319475328460042712
No
. Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Chabahar, Iran
S.A.
Taghavimotlagh
s_taghavimotlaghhotmail.com
100319475328460042713
100319475328460042713
No
Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
Gh.
Daryanbard
daryanabard@gmail.com
100319475328460042714
100319475328460042714
No
Caspian Sea Ecology Research Center, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO), Sari, Iran