Growth and reproduction properties of endemic Capoeta kosswigi and Barbus ercisianus in the Deliçay Stream (Van, Turkey)

Ataman Altuğ Atıcı; Ahmet Sepil; Fazıl Şen; Asude Çavuş

doi:10.12714/egejfas.38.3.05

TR EN

Deliçay (Van, Türkiye)’da yaşayan endemik Capoeta kosswigi ve Barbus ercisianus’un büyüme ve üreme özellikleri

Öz

Bu çalışmada Van Gölü Havzası’na endemik olan Capoeta kosswigi Karaman, 1969 ve Barbus ercisianus Karaman, 1971 türlerinin Deliçay (Van)’da büyüme ve üreme özellikleri araştırılmıştır. Nisan 2018 - Ağustos 2018 tarihleri arasında toplam 309 adet C. kosswigi ve 288 adet B. ercisianus elektrikle avcılık yolu ile yakalanmıştır. Çatal boylar C. kosswigi’de 3,7-26,1 cm, B. ercisianus’ta 4,3-22,7 cm; ağırlık ise C. kosswigi’de 0,6-227,4 ve B. ercisianus’ta 1,2-140,0 g arasında belirlenmiştir. En yoğun avcılık C. kosswigi populasyonunda 5.0-6,9 (%27,5) cm ve 0-19,9 (%67,0) g’lık gruplarda, B. ercisianus’ta ise 12,0-13,9 (%24,7) cm ve 0-9,9 (%23,3) g’lık gruplarda gerçekleşmiştir. Kondisyon faktörü C. kosswigi’de 1,305±0,008 (0,798-1,886), B. ercisianus’ta 1,158±0,006 (0,864-1,559) olarak belirlenmiştir. Boy-ağırlık ilişkisi C. kosswigi’de W = 0,01435 × L2,952 (r2 = 0,996), B. ercisianus’ta ise W = 0,01276 × L2,959 (r2 = 0,994) olarak hesaplanmıştır. Erkek:dişi oranı C. kosswigi‘de 1:0,15 ile B. ercisianus’ta 1:0,64 olarak hesaplanmıştır. C. kosswigi’nin cinsel olgunluğa erkeklerde 11 cm, dişilerde ise 18 cm çatal boyda ulaştığı tespit edilmiştir. B. ercisianus’ta cinsel olgunluk boyu erkeklerde 9 cm, dişilerde ise 12 cm çatal boyda gerçekleşmiştir. C. kosswigi’de üremenin Mayıs ayının 1. haftası ile Temmuz ayının 2. haftası arasında, B. ercisianus’ta ise Mayıs ayının 1. haftası ile Ağustos ayının ilk haftası arasında gerçekleştiği belirlenmiştir. Türlerin devamlılığı için avlanma boyunun C. kosswigi için 20 cm çatal boy, B. ercisianus için ise 15 cm çatal boy altında olmaması gerekmektedir.

Anahtar Kelimeler

Growth and reproduction properties of endemic Capoeta kosswigi and Barbus ercisianus in the Deliçay Stream (Van, Turkey)

Abstract

In this study, the growth and reproductive characteristics of Capoeta kosswigi Karaman, 1969 and Barbus ercisianus Karaman, 1971, which are endemic to the Lake Van Basin, in Deliçay (Van) were investigated. A total of 309 C. kosswigi and 288 B. ercisianus specimens were caught by electrofishing between April and August 2018. The fork length of C. kosswigi and B. ercisianus ranged from 3.7-26.1 cm and from 4.3-22.7 cm, and the total weights ranged from 0.6-227.4 g and from 1.2-140.0 g, respectively. The most intensive catching was in C. kosswigi population of 5.0-6.9 (27.5%) cm and 0-19.9 (67.0%) g in the groups, and 12.0-13.9 (24.7%) cm and 0-9.9 (23.3%) g groups in B. ercisianus. Condition factor was determined as 1.305±0.008 (0.798-1.886) in C. kosswigi and 1.158±0.006 (0.864-1.559) in B. ercisianus. The length-weight relationships were calculated as W = 0.01435 × L2.952 (r2 = 0.996) for C. kosswigi and W = 0.01276 × L2.959 (r2 = 0.994) for B. ercisianus. The M:F ratio was calculated as 1:0.15 in C. kosswigi and 1:0.64 in B. ercisianus. It was established that C. kosswigi attained sexual maturity when they reached to 11 cm fork length for males, 18 cm fork length for females. Maturation of B.ercisianus individuals occurred at 9 cm fork length in males and 12 cm fork length in females. The spawning in C. kosswigi was observed from 1st week of May to 2nd week of July, and in B. ercisianus from 1st week of May to 1st week of August. It may be suggested that minimum catching size must be 20 cm fork length for C. kosswigi and 15 cm fork length for B. ercisianus.

Keywords

Supporting Institution

Van Yüzüncü Yıl Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi

Project Number

2015-FBE-YL353

Thanks

This study was financially supported by Van Yuzuncu Yıl University Scientific Research Projects Coordination Department

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Details

Primary Language

English

Subjects

Hydrobiology , Fisheries Management

Journal Section

Research Article

Authors

Ataman Altuğ Atıcı ^*
0000-0001-8700-8969
Türkiye

Ahmet Sepil
0000-0001-6819-6693
Türkiye

Fazıl Şen
0000-0003-4242-3813
Türkiye

Asude Çavuş
0000-0001-8328-4675
Türkiye

Publication Date

September 15, 2021

Submission Date

August 11, 2020

Acceptance Date

April 23, 2021

Published in Issue

Year 2021 Volume: 38 Number: 3

DOI

https://doi.org/10.12714/egejfas.38.3.05

IZ

https://izlik.org/JA48ZK34BM

Cite

RIS / Bibtex

APA

Atıcı, A. A., Sepil, A., Şen, F., & Çavuş, A. (2021). Growth and reproduction properties of endemic Capoeta kosswigi and Barbus ercisianus in the Deliçay Stream (Van, Turkey). Ege Journal of Fisheries and Aquatic Sciences, 38(3), 293-302. https://doi.org/10.12714/egejfas.38.3.05