AYGIR GÖLÜ'NDEKİ (DUMLU-ERZURUM) YERLİ ALABALIKLARIN (SALMO TRUTTA L.) BAZI POPULASYON PARAMETRELERİ ÜZERİNE ÖN ÇALIŞMA

Bedri Cemal Demir, Mehmet Sıtkı Aras, Olcay Hisar
1.331 1.323

Öz


Özet: Araflt›rmada, Ayg›r gölündeki (Dumlu-Erzurum) yerli alabal›klar›n (Salmo trutta L.) baz› populasyon
parametreleri üzerine bir ön çal›flma yap›lm›flt›r. Bu amaç do¤rultusunda Haziran ve A¤ustos 1996 aylar› aras›
nda toplam 40 bal›k yakalanm›flt›r. Populasyonun %22,5'ini diflilerin, %77,5'ini ise erkeklerin oluflturdu¤u
ve yafllara göre cinsiyetler aras›ndaki fark›n önemli oldu¤u belirlenmifltir (p <0,05). Çatal boy ve vücut a¤›rl›
klar›n›n, a¤›rl›kl› ortalamas› s›ras›yla; 17,42cm ve 70,36g olarak tespit edilmifltir. Bütün bal›klardan hesaplanan
boy-a¤›rl›k iliflki eflitli¤i W=0,009035x FL3,074 iken ortalama kondisyon faktörü ise 1,13 bulunmufltur.

Anahtar Kelimeler: Ayg›r Gölü, Salmo trutta L., Populasyon Parametreleri

The Prior Investigation on Some Population Parameters and Growth Properties of Native Trouts
(Salmo trutta L.) in Ayg›r Lake (Dumlu-Erzurum)

Abstract: Some population parameters of native trout (Salmo trutta L.) in Ayg›r Lake were examined in this
research. For this purpose, total 40 fish caught between June and August 1996. The population was composed
22.5% females and 77.5% males and the differences between sexes were statistically significant
(p <0,05). The weighted average of fork lengths and body weights were 17.42cm and 70.36g, respectively.
The equation of length-weight relationship calculated from all fish was found as W=0,009035x FL3,074.
Condition factor (K) was also found as 1,13.

Key Words: Ayg›r Lake, Salmo trutta L., Population Parameters

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