Growth parameters, Mortality and exploitation ratio of Euthynnus affinis (Cantor, 1849) in Hormozgan Province Waters

Document Type : Biology(Animal)

Authors

Research Institute of Gulf Ecology and Oman Sea, Institute of Fisheries Sciences Research, Agricultural Education and Promotion Research Organization, Bandar Abbas, Iran

Abstract

Euthynnus affinis is one of the most commericial tuna species in Northern of the Persian Gulf and Oman Sea. In order to come up with the responsible fishing pattern, there was a need to identify some of characteristics and population dynamic parameters. Data were collected randomly from three major artisanal fish-landing sites Bandar Jask, Bandar Abbas and Bandar Lengeh in Hormozgan Province, from April 2015 to March 2015. The average of fork length estimated 60.1 cm. The "a" and "b" parameters in Length- Weight relationship were estimated 2.84 and 0.0000212 respectively and showed that E.affinis has allometric growth. The growth parameters of L∞, K and t0 were computed 90.9 (cm), 0.78 (1/year) and -0.15 year respectively. The fork length attained at the end of 1, 2 and 3 year to be 53.8, 73.9 and 83.1 cm respectively. Growth performance index caculated 8.77 which was in agreement with the finding of the other studies. Total mortality, natural mortality and fishing mortality were estimated 2.49, 0.85 and 1.64 (1/year) respectively. The Fopt and Flimit as biological reference point were calculated 0.43 and 0.56 (1/year) respectively. The exploitation ratio was estimated 0.66. The results showed overfishing on E.affinis stocks in Hormozgan Province and it is necessary to reduce activity for fishing management.

Keywords

References

  1. Ahmed, Q.; Bilgin, S. and Bat, L., 2016. Length based growth estimation of most commercially important Scombridae from offshore water of Pakistan Coast in the Arabian Sea. Turkish Journal of Fisheries and Aquatic Sciences. Vol. 16, pp: 155-167.
  2. Al-Zibdah, M. and Odat, N., 2007. Fishery, status, growth, reproduction biology and feeding habits of two Scombroid fish from the Gulf of Aquaba, Red Sea. Lebanese Science Journal. Vol. 8, pp: 3-20.
  3. Azpeitia, R.M.; López-Martínez, J.; Rábago-Quiroz, C.H.; Nevárez-Martínez, M.O. and Herrera-Valdivia, E., 2013. Growth and mortality rates of Pseudupeneus grandisquamis and Urobatis halleri bycatch species in the shrimp fishery. Hidrobiológica. Vol. 23, pp: 386-393.
  4. Biswas, S.P., 1993. Manual of methods in fish biology, South Asian publishers. 175 p.
  5. Cadima, E.L., 2003. Fish Stock Assessment Manual. FAO Fisheries Technical Paper No. 393. Rome. 161 p.
  6. Collette, B.B. and Nauen, C.E., 1983. FAO Species Catalogue. Vol. 2. Scombrids of the world. An annotated and illustrated catalogue of tunas, mackerels, bonitos and related species known to date. Rome: FAO. FAO Fish. Synop. 137 p.
  7. Froese, R., 2006. Cube law, condition factor and weight-length relationships: history, meta-analysis and recommendations. Journal of Applied Ichthyology. Vol. 22, pp: 241–253.
  8. Froese, R. and Binohlan, C., 2000. Empirical relatonships to estimate asymptotic length, length at first maturity and length at maximum yield per recruit in fishes, with a simple method to evaluate length frequency data Journal of Fish Biology. Vol. 56, pp: 758-773.
  9. Froese, R.; Tsikliras, A.C. and Stergious, K.I., 2011. Editorial note on weight-length relations of fishes. Acta Ichthyologica et  Piscatoria. Vol. 41, pp: 261-263.
  10. Gayanilo, F.C.; Sparre, P. and Pauly, D., 1996. The FAO ICLARM Stock Assessment Tools (FiSAT), User's guide. (Fisheries). FAO Computerized Information Series. No. 8. Rome, Italy. 126 p.
  11. Ghosh, S.; Pillai, N.G.K. and Dhokia, H.K., 2010. Fishery, population characteristics and yield estimates of coastal tunas at Veraval. Indian Journal of Fisheries. Vol. 57, pp: 7-13.
  12. Haddon, M., 2011. Modelling and QuantitativeMethods in Fisheries.' 2nd edn, Chapman and Hall. 449 p.
  13. Hoeing, J.M.; Csirke, M.J.; Sanders, A.; Abella, M.G.; Andreoli, D.;Levi, S., Ragonese, M.; Al-Shoushani, M. and El-musa, M., 1987. Data Acquisition for Length-Based Stock Assessment: Report of Working Group. Vol. 4, pp: 343-352.
  14. IOTC. 2015. Assessment of longtail tuna using data poor catch-based methods (IOTC-2015-WPNT05-22), Retrieved August 12, 2016. http://www.iotc.org.
  15. Jenings, S.; Kaiser, M.J. and Reynolds, D., 2001. Marine fish ecology. Blackwell Science. Ltd. 417 p.
  16. Johnson, M.G. and Tamatamah, R.A., 2013. Length frequency distribution, mortality rate and reproductive biology of kawakawa (Euthynnus affinis-Cantor, 1849) in the Coastal Waters of Tanzania. Pakistan Journal of Biological Sciences. Vol. 16, pp: 1270-1278.
  17. Kasim, H. M. and Abdussamad, E. M., 2003. Stock assessment of coastal tunas along the east coast of India.  In: Somvanshi, V. S., Vargh ese, S. and Bhargava, A. K. (Eds), Proc. Tuna Meet-2003. pp: 42-53.
  18. Kaymaram, F. and Darvishi, M., 2012. Growth and mortality parameters of Euthynnus affinis in the northern part of the Persian Gulf and Oman Sea. Indian Ocean Tuna Commission (IOTC), Working Party on Neritic Tunas (WPNT), IOTC-2012-WPNT02-14. pp: 1-14.
  19. Khan, M. Z., 2004. Age and growth, mortality and stock assessment of Euthynnus affinis from Maharashtra waters. Indian Journal of Fisheries. Vol. 51, pp: 209-213.
  20. King, M., 2010. Fisheries biology assessment and management fishing. Second Edition. Blackwell publishing Ltd. 382 p.
  21. Mudumala, V.K.; Farejiya, M.K.; Mali, K.S.; Rao, K.R.; Ankush, P.S. and Anandhan, S., 2018. Investigations on the age, growth and mortality parameters of Kawakawa, Euthynnus affinis (Cantor, 1849) from the North west coast of India. International Journal of Aquatic Biology. Vol. 6, pp: 21-24.
  22. Patterson, K., 1992. Fisheries for pelagic species: An empirical approach to management targets. Review in Fish Biology and Fisheries. Vol. 2, pp: 321-338.
  23. Pauly, D., 1980. On the interrelationships between natural mortality, growth parameters, and mean environmental temperature in 175 fish stocks. Journal Du Conseil International Pour L'Exploration De La Mer. Vol. 39, pp: 175-192.
  24. Pauly, D., 1984. Fish population dynamics in tropical waters: A manual for use with programmable calculators, ICLARM Stud. Rev. Vol. 8, pp: 325-356.
  25. Pauly, D., 1987. A review of the ELEFAN system for analysis of length-frequency data in fish and aquatic invertebrates. pp: 7-34. In D. Pauly and G. R. Morgan (eds). Length-based methods in Fisheries research. ICLARM conference proceedings. 468 p.
  26. Pauly, D. and Morgan, G.R., 1987. Length-Based method in fisheries research. International Center for Living Aquatic Resources Management.Kuwait Institute for Science Research. 468 p.
  27. Pauly D. and Munro, J., 1984. Once more on the comparision of growth in fish and invertebrates, Fishbyte. Vol. 2, 21 p.
  28. Pillai, P.P.; Pillai, N.G.; Sathianandan, T.V. and Kesavan Elaythu, M.N.K., 1993. Fishery Biology and stock assessment of Scomberomorous commerson (lacepede) from the South West Coast in India. IPTP Collective. Vol. 8, pp: 56-61. 
  29. Pitcher, T.J., 2002. A bumpy old road: Size-base methods in fisheries assessment. In: Hand book of Fish Biology and Fisheries: Vol.2, (Fisheries. Hart, P.J.B. and Reynolds, J.D.,). Blackwell Publishing, Oxford. 210 p.
  30. Rohit, P.; Chellappan, A.; Abdusssamad, E.M.; Joshi, K.K.; Koya, K.P.S.; Sivadas, M.; Ghosh, S.; Rathinam, A.M.M.; Kemparaju, S.; Dhokia, H.K.; Prakasan, D. and Beni, N., 2012. Fishery and bionomics of the little tuna, Euthynnus affinis (Cantor, 1849) exploited from Indian waters. Indian Journal of Fisheries. Vol. 59, pp: 33- 42.
  31. Sparre, P. and Venema, S.C., 1992. Introduction to tropical fish Stock Assessment. Part 1- Manual, FAO, Rome, Italy. 375 p.
  32. Sulistyaningsih, R.K.; Jatmiko, I. and Wujdi, A., 2014. Length frequency distribution and population parameters of kawakawa (Euthynnus affinis-Cantor, 1849) caught by purse seine in the Indian Ocean (a Case Study in Northwest Sumatera IFMA 572. Vol. 20, pp: 1-14.
  33. Taghavi, M.S.A.; Hashemi, S.A. and Kochanian, P., 2010. Population biology and assessment of Kawakawa (Euthynnus affinis) in Coastal Waters of the Persian Gulf and Sea of Oman (Hormozgan Province). Iranian Journal of Fisheries Sciences. Vol. 9, pp: 315-326.
  34. Weatherley, A.H., 1972. Growth and ecology of fish populations. Academic Press, London. 258 p.
  35. Yesaki, M., 1989. Estimate of age and growth of Kawa kawa (Euthynnus affinis) longtail tuna (Thunnus tonggol) and frigate tuna (Auxis thazard) from the Gulf of Thailand based on length data. Ino-pac. Tuna, Dev. Mgt. Programme. ITPT/89/GEN. Vol. 17, pp: 94-108.
  36. Yesaki, M., 1989. Estimates of age and growth of kawakawa (Euthynnus affinis), longtail tuna (Thunnus tonggol) and frigate tuna (Auxis thazard) from the Gulf of Thailand based on length data. Indo-Pacific Tuna Development and Management Programme, IPTP/89/GEN. Vol. 17,
    pp: 94-108.

 

Journal of Animal Environment
Volume 12, Issue 1
February 2020
Pages 133-142

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