Potential estimation and exploitation of large pelagics in the Persian Gulf and Oman Sea
In order to come up with the responsible fishing pattern, there was a need to identify some of the biological characteristics and population dynamic parameters of yellowfin tuna, skipjack and longtail tuna in the Persian Gulf and Oman Sea. Occurrence of empty stomach was high in all the specimens obtained from the gill net fisheries. Purple back flying squid was the most dominant prey species observed in the yellowfin tuna study (61% in males and 57% in females). The length of maturity (Lm50%) for yellowfin tuna was estimated 76 cm, 62.5 cm skipjack and 62.5 cm longtail tuna. Length range of skipjack was from 31-100 cm and bony fishes were the most dominant prey species observed in the skipjack. The monthly gonad somatic index was driven higher values after June which could be indicated as spawning period. The catch per unit of effort of three purse seiners (Azadegan 1, 2, 3) was compared in 1998- 2000. The species composition was 47% yellowfin tuna, 51% long tail tuna and 2% skipjack.
Main Authors: | , , , , |
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Format: | monograph biblioteca |
Language: | Persian |
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Iranian Fisheries Science Research Institute
2007
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Subjects: | Biology, Iran, Persian Gulf, Oman Sea, Pelagics, Biological characteristics, Population, Yellowfin tuna, Skipjack, Longtail tuna, Specimens, Gill Net, Fisheries, Purple back flying squid, Species, Maturity, Length, Gonad Somatic Index, Spawning, Estimation, Potential, |
Online Access: | http://hdl.handle.net/1834/39534 |
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dig-aquadocs-1834-395342021-07-16T02:12:05Z Potential estimation and exploitation of large pelagics in the Persian Gulf and Oman Sea Kaymaram, Farhad Hosseini, S.A. Darvishi, M. Talebzadeh, S.A. Rostami, D. Biology Iran Persian Gulf Oman Sea Pelagics Biological characteristics Population Yellowfin tuna Skipjack Longtail tuna Specimens Gill Net Fisheries Purple back flying squid Species Maturity Length Gonad Somatic Index Spawning Estimation Potential In order to come up with the responsible fishing pattern, there was a need to identify some of the biological characteristics and population dynamic parameters of yellowfin tuna, skipjack and longtail tuna in the Persian Gulf and Oman Sea. Occurrence of empty stomach was high in all the specimens obtained from the gill net fisheries. Purple back flying squid was the most dominant prey species observed in the yellowfin tuna study (61% in males and 57% in females). The length of maturity (Lm50%) for yellowfin tuna was estimated 76 cm, 62.5 cm skipjack and 62.5 cm longtail tuna. Length range of skipjack was from 31-100 cm and bony fishes were the most dominant prey species observed in the skipjack. The monthly gonad somatic index was driven higher values after June which could be indicated as spawning period. The catch per unit of effort of three purse seiners (Azadegan 1, 2, 3) was compared in 1998- 2000. The species composition was 47% yellowfin tuna, 51% long tail tuna and 2% skipjack. 2021-06-24T18:21:32Z 2021-06-24T18:21:32Z 2007 monograph 86.679 http://hdl.handle.net/1834/39534 fa http://www.ifro.ir/ application/pdf application/pdf 150 Iranian Fisheries Science Research Institute Tehran, Iran http://aquaticcommons.org/id/eprint/25137 18721 2018-08-26 16:54:02 25137 Iranian Fisheries Science Research Institute |
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Biology Iran Persian Gulf Oman Sea Pelagics Biological characteristics Population Yellowfin tuna Skipjack Longtail tuna Specimens Gill Net Fisheries Purple back flying squid Species Maturity Length Gonad Somatic Index Spawning Estimation Potential Biology Iran Persian Gulf Oman Sea Pelagics Biological characteristics Population Yellowfin tuna Skipjack Longtail tuna Specimens Gill Net Fisheries Purple back flying squid Species Maturity Length Gonad Somatic Index Spawning Estimation Potential |
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Biology Iran Persian Gulf Oman Sea Pelagics Biological characteristics Population Yellowfin tuna Skipjack Longtail tuna Specimens Gill Net Fisheries Purple back flying squid Species Maturity Length Gonad Somatic Index Spawning Estimation Potential Biology Iran Persian Gulf Oman Sea Pelagics Biological characteristics Population Yellowfin tuna Skipjack Longtail tuna Specimens Gill Net Fisheries Purple back flying squid Species Maturity Length Gonad Somatic Index Spawning Estimation Potential Kaymaram, Farhad Hosseini, S.A. Darvishi, M. Talebzadeh, S.A. Rostami, D. Potential estimation and exploitation of large pelagics in the Persian Gulf and Oman Sea |
description |
In order to come up with the responsible fishing pattern, there was a need to identify some of the biological characteristics and population dynamic parameters of yellowfin tuna, skipjack and longtail tuna in the Persian Gulf and Oman Sea. Occurrence of empty stomach was high in all the specimens obtained from the gill net fisheries. Purple back flying squid was the most dominant prey species observed in the yellowfin tuna study (61% in males and 57% in females). The length of maturity (Lm50%) for yellowfin tuna was estimated 76 cm, 62.5 cm skipjack and 62.5 cm longtail tuna. Length range of skipjack was from 31-100 cm and bony fishes were the most dominant prey species observed in the skipjack. The monthly gonad somatic index was driven higher values after June which could be indicated as spawning period. The catch per unit of effort of three purse seiners (Azadegan 1, 2, 3) was compared in 1998- 2000. The species composition was 47% yellowfin tuna, 51% long tail tuna and 2% skipjack. |
format |
monograph |
topic_facet |
Biology Iran Persian Gulf Oman Sea Pelagics Biological characteristics Population Yellowfin tuna Skipjack Longtail tuna Specimens Gill Net Fisheries Purple back flying squid Species Maturity Length Gonad Somatic Index Spawning Estimation Potential |
author |
Kaymaram, Farhad Hosseini, S.A. Darvishi, M. Talebzadeh, S.A. Rostami, D. |
author_facet |
Kaymaram, Farhad Hosseini, S.A. Darvishi, M. Talebzadeh, S.A. Rostami, D. |
author_sort |
Kaymaram, Farhad |
title |
Potential estimation and exploitation of large pelagics in the Persian Gulf and Oman Sea |
title_short |
Potential estimation and exploitation of large pelagics in the Persian Gulf and Oman Sea |
title_full |
Potential estimation and exploitation of large pelagics in the Persian Gulf and Oman Sea |
title_fullStr |
Potential estimation and exploitation of large pelagics in the Persian Gulf and Oman Sea |
title_full_unstemmed |
Potential estimation and exploitation of large pelagics in the Persian Gulf and Oman Sea |
title_sort |
potential estimation and exploitation of large pelagics in the persian gulf and oman sea |
publisher |
Iranian Fisheries Science Research Institute |
publishDate |
2007 |
url |
http://hdl.handle.net/1834/39534 |
work_keys_str_mv |
AT kaymaramfarhad potentialestimationandexploitationoflargepelagicsinthepersiangulfandomansea AT hosseinisa potentialestimationandexploitationoflargepelagicsinthepersiangulfandomansea AT darvishim potentialestimationandexploitationoflargepelagicsinthepersiangulfandomansea AT talebzadehsa potentialestimationandexploitationoflargepelagicsinthepersiangulfandomansea AT rostamid potentialestimationandexploitationoflargepelagicsinthepersiangulfandomansea |
_version_ |
1756079905572913152 |