Van Gölü Havzası’nda Farklı Göllerden (Van, Erçek, Nazik, Aygır) (Türkiye) Örneklenen İnci Kefali (Alburnus tarichi Güldenstädt, 1814))’nin Otolit Özelliklerinin Karşılaştırmalı Analizi

Öz

Bu çalışmada, Van Gölü Havzası’nda farklı lokalitelerden örneklenen Alburnus tarichi’nin otolit morfolojisi karşılaştırılması gerçekleştirilmiştir. Nisan-Mayıs 2015’te dört farklı habitattan (Van, Erçek, Nazik, Aygır) 351 A. tarichi bireyi fanyalı ağlar aracılığıyla örneklenmiş incelenmiştir. Örneklerinin çatal boyları ve ağırlıkları sırası ile 9,9-24,6 cm, 8,4-176,5 g arasındadır. Lagenar otolitler sağ ve sol ayrımı yapılarak çıkarılmıştır. Otolit boyu (OL), otolit eni (OB) ölçülmüş, otolitler tartılmıştır (OW). Sağ-sol otolit ölçümlerinin karşılaştırılması bağımlı örneklem t testi ile test edilmiştir. A. tarichi’nin tüm lokaliteler arasındaki otolit eni, otolit boyu ve ağırlığı karşılaştırmaları ANOVA ile test edilmiştir. Van Gölü ve Erçek Gölü örneklerinde sağ ve sol otolitler arasında otolit boyu ve otolit ağırlığı bakımından fark yok iken otolit eni bakımından önemli farklılık tespit edilmiştir. Nazik Gölü ve Aygır Gölü örneklerinde sağ ve sol otolit ölçümleri arasında herhangi bir farklılık yoktur. Tüm lokaliteler bir arada değerlendirildiğinde otolit boyu, otolit eni ve otolit ağırlığı dört habitatta birbirinden farklıdır. Otolit ölçümleri ve balık boyu arasındaki ilişkilerin ortaya çıkarılmasında eğrisel model kullanılmıştır.

Anahtar Kelimeler

• Alburnus tarichi
• Van Gölü
• Erçek Gölü
• Nazik Gölü
• Aygır Gölü

Comparative Analysis of Otolith Features of Tarek (Alburnus tarichi (Güldenstädt, 1814)) from Different Lakes across Van Basin (Van, Erçek, Nazik, Aygır) (Turkey)

Abstract

IIn the present study, a comparison of the otolith morphology of Alburnus tarichi, collected from different localities throughout Van Basin was carried on. A total of 351 specimens of A.tarichi collected by trammel nets from four different localities (Van, Erçek, Nazik, Aygır) during the period April-May 2015 were examined. Fork length and body weight of the specimens ranged between 9.9-24.6 cm and 8.4-176.5 g, respectively. Lagenar otoliths were removed discriminating as left and right. Otolith length (OL), otolith breadth (OB) and otolith weight (OW) were collected. Comparisons of right-left otolith measurements were tested by paired t test. Comparisons of otolith breadth, length and weight of A. tarichi among all localities were tested by ANOVA. There were no significant difference in terms of otolith length and weight between right and left otoliths but there were statistically significant difference in terms of otolith breadth between the specimens collected in Lake Van and Lake Erçek. There were no differences between right and left otolith measurements in Lake Nazik and Lake Aygır. Comparing all localities together, otolith length, breadth and weight were different from each other for four localities. The power model was applied to estimate the relationships between the otolith measurements and fish length.

Keywords

• Alburnus tarichi
• Lake Van
• Lake Erçek
• Lake Nazik
• Lake Aygır
• Lake Aygır

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