Gillnet and trammel net selectivity for Prussian carp (Carassius gibelio) in Marmara Lake, (Turkey)
Abstract
This study aimed to determine the selectivity properties of multifilament gillnets and trammel nets for Prussian carp (Carassius gibelio Bloch,1782) in Marmara Lake (Manisa, Turkey). A total of 36 fishing trials were performed with three different stations on a monthly in 2012. Nets with same mesh sizes (4, 6, 8 and 10 cm) and characters were used in gillnets and trammel nets. SELECT method was utilized to estimate the selectivity parameters. Normal scale and normal location model gave the best fit for gillnet and trammel nets respectively. A total of 2234 Carassius gibelio were caught ranges between 8.80-27.50 cm in total lengths. The model length for 4 cm mesh size was estimated as 12.71 cm for gillnets and 12.04 cm for trammel nets. No statistical differences were found between estimated model lengths for different sex groups. Model lengths are much higher than first maturity size which 11.5 cm was given by different authors. This situation makes it impossible combating with this invasive species. Therefore, special fishing equipment or devices are needs to be investigated just for caught C. gibelio. In addition, C. gibelio was the second species by production rate in Turkey inland fisheries; therefore, it should be economically evaluated using different processing techniques.
Keywords
References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Authors
Celalettin Aydın
*
Ege University, Faculty of Fisheries, Fish Capture and Seafood Processing Technology Department, Bornova, İzmir, Turkey
0000-0001-8993-6013
Türkiye
Mehmet Cilbiz
Fisheries Research Institute, 32500 Eğirdir-Isparta, Turkey
0000-0002-7686-7570
Türkiye
Ali İlhan
Ege University, Faculty of Fisheries, Marine and Inland Water Sciences and the Technology Department, Bornova, İzmir, Turkey
0000-0002-7666-1804
Türkiye
Hasan Musa Sari
Ege University, Faculty of Fisheries, Marine and Inland Water Sciences and the Technology Department, Bornova, İzmir, Turkey
0000-0003-1000-514X
Türkiye
Publication Date
March 15, 2018
Submission Date
January 3, 2018
Acceptance Date
February 27, 2018
Published in Issue
Year 1970 Volume: 35 Number: 1
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