TR
EN
Species diversity and dominancy indexes in Izmir Bay (Aegean Sea) purse seine fishery
Abstract
Purse seine fishery is known with its importance in Aegean Sea to catch pelagic species. In this study, to determine the diversity index values of species caught by purse seine, all samplings were carried out between September 2, 2017, and April 6, 2018 in Izmir Bay. As a result, a total of 17 fish species (Osteichthyes) belonging to 11 families and also 2 species from invertebrates (Cephalopoda and Arthropoda) were determined. Bony fishes and invertebrates consist of 99.9% and 0.1% of the total biomass, respectively. Sardina pilchardus was the most dominated species that occupied as 80.2% of the overall bony fishes followed by Engraulis encrasicolus (14.6%) and Sardinella aurita (1.5%). Diversity index values of species were found -1.026 by Shannon-Weaver and 0.63 by Simpsons, respectively. The highest dominancy was found for S. pilchardus with 71.1%. Overall final results indicate that the diversity of species in Izmir Bay purse seine fishery is very low and also S. pilchardus is the most over-dominant species.
Keywords
Supporting Institution
Ege University Scientific Research Project Coordination Unit
Project Number
2017/SUF/002
Thanks
We would like to thank Ege University Scientific Research Project Coordination Unit (Project No.2017/SUF/002), project researcher and Afala purse seiner staff.
References
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Details
Primary Language
English
Subjects
Fisheries Management
Journal Section
Research Article
Publication Date
December 15, 2020
Submission Date
March 11, 2020
Acceptance Date
May 9, 2020
Published in Issue
Year 2020 Volume: 37 Number: 4
APA
Şenbahar, A. M., Güleç, Ö., & Tosunoğlu, Z. (2020). Species diversity and dominancy indexes in Izmir Bay (Aegean Sea) purse seine fishery. Ege Journal of Fisheries and Aquatic Sciences, 37(4), 353-356. https://doi.org/10.12714/egejfas.37.4.05
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