Research Article

Growth parameters of the invasive blue swimming crab Portunus segnis (Forskål, 1775) (Crustacea) in the North-Eastern Mediterranean, Türkiye

Volume: 5 Number: 4 October 1, 2022
EN

Growth parameters of the invasive blue swimming crab Portunus segnis (Forskål, 1775) (Crustacea) in the North-Eastern Mediterranean, Türkiye

Abstract

The blue swimming crab, Portunus segnis, is a Lessepsian and the most abundant and economically significant crab species on the Mediterranean Sea coast of Türkiye. However, there are a few studies on the growth of P. segnis in Türkiye. Our objective is to determine the allometry, and growth parameters of P. segnis in Iskenderun Bay, the Northeastern Mediterranean. Blue swimming crabs were sampled using a bottom trawl net from July 2014 to June 2015. Totally 320 specimens were caught. The carapace width (CW) varied from 38.1 to 163.17 mm (mean: 109.88±27.56 mm) and the total weight (TW) was measured at a minimum of 3.46 and a maximum of 324.36 g. The width (CW)- weight (TW) relationships of the crabs were estimated as log(TW)=2.9028CW-9.0664 (R2=0.7452) for the females and log(TW)=2.9773CW-9.3842 (R2=0.8433) for the males. The carapace width-weight relationships of both sexes indicated that the growth pattern is allometric (p<0.05). The von Bertalanffy growth parameters were computed as CW∞=166.00 mm, K=1.2 year-1, t0=-1.62 years, C=0, WP=0.20, and Φ´=4.519 for all crabs. The von Bertalanffy growth parameters of P. segnis were determined on the coasts of Türkiye, for the first time. 

Keywords

Supporting Institution

Cukurova University Scientific Research Projects Coordination Unit

Project Number

SÜF2013BAP25

Thanks

The authors thank, commercial trawler's complement "MAVI SU 3" for performing the trawling operations.

References

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Details

Primary Language

English

Subjects

Maritime Engineering , Maritime Engineering (Other)

Journal Section

Research Article

Publication Date

October 1, 2022

Submission Date

April 14, 2022

Acceptance Date

July 2, 2022

Published in Issue

Year 2022 Volume: 5 Number: 4

APA
Yeşilyurt, İ. N., Türeli, C., & Gundogdu, S. (2022). Growth parameters of the invasive blue swimming crab Portunus segnis (Forskål, 1775) (Crustacea) in the North-Eastern Mediterranean, Türkiye. Aquatic Research, 5(4), 285-294. https://doi.org/10.3153/AR22028

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