Güneydoğu Karadeniz'de (Rize, Türkiye) Krişli Trolle Yakalanan Dil Balığı'nın, Arnoglossus kessleri Schmidt, 1915 (Pleuronectiformes: Bothidae), Boy-Ağırlık İlişkisi

Dil balığı (Arnoglossus kessleri) Akdeniz ve Karadeniz'e endemik bir türdür. Bu çalışma, bu endemik dil balığın boy ağırlık ilişkisi (WLRs) parametrelerini belirlemek için güney doğu Karadeniz'de Rize ili civarında krişli trol ile örneklenen bireyler üzerinden yürütülmüş olup ayrıca türün Karadeniz'deki balıkçılık yönetimine katkı sağlamak amacıyla önceki çalışmalardan elde edilen WLRs parametreleri karşılaştırmıştır. WLRs parametreleri dişilerin izometrik büyüme (Pauly’ t test, P > 0,05), erkek ve tüm bireylerin (dişi+erkek) ise pozitif allometrik (hyperallometric) büyüme (Pauly’ t test, P < 0,05) özelliği gösterdiğini ortaya koymuştur. Korelasyon katsayısı (r) istatistiksel olarak sıfırdan farklı hesaplanmış olup (P < 0,05), bu sonuç dil balığı için hesaplanan WLRs denklemi parametreleri arasındaki ilişkinin güçlü olduğunu göstermiştir. Ayrıca, önceki çalışmalardan elde edilen log(a) ve b değerleri regresyona tabi tutulduğunda, bu çalışmada tüm A. kessleri bireyler için (dişi+erkek) elde edilen sonuçların önceki çalışmalarla tutarlı olduğu belirlenmiştir. Bu çalışma, Türkiye'nin Karadeniz kıyı sularında A. kessleri popülasyonlarının sürdürülebilir balıkçılık yönetimini desteklemek için türün boy ağırlık ilişkisi hakkında yeni temel bilgiler sunmaktadır.

Anahtar Kelimeler:

Arnoglossus kessleri, balıkçılık yönetimi, boy ağırlık ilişkisi (WLRs), Dil balığı, Karadeniz

Weight-Length Relationships (WLRs) of Scaldback, Arnoglossus kessleri Schmidt, 1915 (Pleuronectiformes: Bothidae), Caught by Beam Trawl in the Southeastern Black Sea (Rize, Turkey)

The Scaldback, Arnoglossus kessleri, is an endemic fish to the Mediterranean and Black seas. The present study was conducted to determine the weight-length relationships (WLRs) of this endemic species caught by beam trawl on the Rize province coasts of the southeastern Black Sea, Turkey and to compare the WLRs parameters of A. kessleri from different geographical locality for contributing fisheries management of this fish species in the Black Sea. The WLRs parameters of A. kessleri were showed that A. kessleri exhibited positive allometric (or hyperallometric) growth characteristics for male and combined data (Pauly’ t test, P < 0.05) and isometric growth for female (Pauly’ t test, P > 0.05). The values of coefficient (r) for female, male and combined data of this species are different from zero (P < 0.05), indicated that A. kessleri has higher correlation in the WLRs equations. In addition to this, to compare the estimations calculated from the present study with other studies, log(a) values were plotted against values of slope (b), proved to be consistent with previous studies data for unsexed A. kessleri specimens. This study provides new basic information on the LWRs for A. kessleri populations, in support of sustainable fisheries management of this species and especially of the coastal waters in the Black Sea, Turkey.

Keywords:

Arnoglossus kessleri, Black Sea, fisheries management, Scaldback, weight-length relationships (WLRs),

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