Length-Weight Relationship of the Most Landed Pelagic Fish Species European Pilchard (Sardina pilchardus Walbaum, 1792) and European Anchovy (Engraulis encrasicolus Linnaeus, 1758) in the İzmir Bay (Aegean Sea, Turkey) Purse Seine Fishery

Year 2020, Volume: 9 Issue: 1, 32 - 37, 30.06.2020

Ahmet Mert Şenbahar , Özlem Güleç , Zafer Tosunoğlu , Okan Özaydın

https://doi.org/10.33714/masteb.673318

Cited By: 2

Abstract

Length-weight relationships (LWR) of the most landed pelagic fish species Sardina pilchardus Walbaum, 1792 and Engraulis encrasicolus Linnaeus, 1758 in the Izmir Bay purse seine fishery were determined to reveal latest situation. Purse seine is a non-selective fishing gear compare to the other fishing gear such as gillnet or trammel net. For this reason, sampling all size individuals is very important to calculate mean length and other LWR parameters. In this study, seasonal LWR coefficient and minimum-maximum lengths were established as monthly basis. LWR of S. pilchardus and E. encrasicolus were W = 0.0059L^2.7930 (r² = 0.94) and W = 0.0019L^3.4207, (r² = 0.87), respectively. Growth type of the S. pilchardus was found negative allometric whereas E. encrasicolus was positive allometric. A decrease of the mean total length of S. pilchardus has been considerable variable from 1994 to 2014 in Izmir Bay but with this study, it is observed that mean length of the sardine found near of 2006 value related to seasonal fishing pressure.

Keywords

Sardina pilchardus, Engraulis encrasicolus, LWR, Izmir Bay, Purse seine fishery

Supporting Institution

Ege University Scientific Research Project Coordination Unit

Project Number

2017/SUF/002

Thanks

We would like to thanks to skipper S. Canbaz and all staff of purse seiner Afala. The present study was funded by the Ege University Scientific Research Project Coordination Unit (Project No. 2017/SUF/002).

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