Growth study of Giant cuttlefish (Sepia ‎pharaonis) during spawning period in the ‎northern Persian Gulf

Niamaimandi, Nassir; Shabani, Javad; Esmaily, Abdolrasol; Mobarrezi, Ali; Moradi, Gholam

doi:10.30473/eab.2020.45823.1702

Document Type : Article

Authors

¹ Associate Professor, Head of Shrimp Biological Research, Iran Shrimp Research Center, Iranian Fisheries Science Research ‎Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Bushehr, Iran.‎

² Instructor, Head of Stock Assessment Division, Iran ‎Shrimp Research Center, Iranian Fisheries Science ‎Research Institute (IFSRI), Agricultural Research ‎Education and Extension Organization (AREEO), ‎Bushehr, Iran

³ stuff of the stock assessment division, Iran Shrimp Research Center, Iranian Fisheries Science Research Institute (IFSRI), Bushehr, Iran.

⁴ M. A., of the Stock Assessment Division, Iran Shrimp ‎Research Center, Iranian Fisheries Science Research ‎Institute (IFSRI), Bushehr, Iran

https://doi.org/10.30473/eab.2020.45823.1702

Abstract

Growth parameters of cuttlefish (Sepia pharaonis) was estimated from northern Persian Gulf, (27˚ 50´ 06˝ and 30˚ 06´ 07˝N to 52˚ 02´ 56˝and 50˚ 05´ 14˝E) from October 2017 to May 2018. 100 to 150 specimens were randomly separated each time from total catch and mantel length and body weight were measured by sexes. Based on the Von-Bertalanffy growth formula in males, growth parameters were estimated with K=0.3 year^-1 and L∞=37 cm. In females, growth coefficient, K and asymptotic length, L∞ were estimated 0.5 year⁻¹ and 30 cm respectively. Maximum of fishing effort was observed in November 1.08±0.71 kg per trap and minimum was 0.06±0.02 kg per trap in May. Maximum catch per trap was 0.65±0.56 kg in 21-30 m depths and minimum was 0.10±0.05 kg in 41-50 m depths. Low growth coefficients in males and females show that this species reached to maximum growth during presence in the study area. Also, its aggregation in the depths of 30-21 m indicates the accumulation of mature spawning specimens in the area, which needs serious protection.

Keywords

20.1001.1.23222387.1399.9.1.10.3

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Experimental animal Biology

Growth study of Giant cuttlefish (Sepia ‎pharaonis) during spawning period in the ‎northern Persian Gulf

References

References

Volume 9, Issue 1 - Serial Number 1
September 2020
Pages 111-121

Growth study of Giant cuttlefish (Sepia ‎pharaonis) during spawning period in the ‎northern Persian Gulf

References

References

Volume 9, Issue 1 - Serial Number 1September 2020Pages 111-121

Volume 9, Issue 1 - Serial Number 1
September 2020
Pages 111-121