Topçam Baraj Gölü'ndeki (Aydın) tatlısu kefalinin (Leuciscus cephalus L.,1758) yaş,büyüme ve cinsiyet oranları
Küçük Resim Yok
Tarih
2003
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Topçam Baraj Gölü'nden Haziran 1999-Haziran 2000 tarihleri arasında yakalanan 332 adet tatlısu kefalinin (Leuciscus cephalus L. 1758) eşey dağılımı, yaş kompozisyonu, yaş-boy, yaş-ağırlık ve boy-ağırlık ilişkileri, kondisyon faktörü saptanmıştır. I-VII yaşları arasında dağılım gösteren örneklerin %72.89'u dişi, %27.11 'i erkek bireylerden oluşmuştur. Çatal boy değerleri dişi bireylerde 10.70-26.20 cm, ağırlık 19.80-344.00 gr, erkek bireylerde 9.70-23.50 cm, ağırlık 16.20-203.10 arasında değişmiştir. Populasyondaki büyüme ilk yaşlarda hızlı iken yaşın artmasıyla birlikte büyümenin yavaşladığı görülmüştür. Von Bertalanffy'e göre hesaplanan büyüme eşitlikleri dişi ve erkek için sırasıyla aşağıdaki şekilde bulunmuştur. Lt= 40.18 $(1.e^{-0.121(t+1.575)})$; Wt= 1188.43 $(1.e^{-0.121(t+1.575)})^{3.19}$ , Lt= 27.08 $(1-e^{-0.302(t+0.455)})$; Wt= 272.86 $(1-e^{0.302(t+0.455)})^{2.85}$ Boy-ağırlık arasındaki eşitlik; dişi ve erkek bireyler için sırasıyla aşağıdaki şekilde bulunmuştur. W= 0.009082 $L^{3.19}$ ; W= 0.022537 $L^{2.85}$
Sex and age compositions, age-length, age-weight relations, condition factors were investigated on 332 chub (Leuciscus cephalus L. 1758) specimens caught in the Topçam Dam Lake between June 1999 and June 2000. the age compositions of specimens were between I-Vn years and sex percentages were calculated as 72.89%for females and 27.1 l%for males. the forked length and weight of females and males varied from 10.7-26.2 cm, 19.8-344.0 g and 9.7-23.5 cm, 16.2-203.1 g., respectively. Growth of population was the most rapid at the first years of life afterwards growth ratio was slower. Growths were calculated by the Von Bertalanffy the following growth equations were found for females and males, respectively. Lt= 40.18 $(1.e^{-0.121(t+1.575)})$ ; Wt= 1188.43 ($(1.e^{-0.121(t+1.575)})^{3.19}$ Lt= 27.08$(1-e^{-0.302(t+0.455)})$ ; Wt= 272.86 $(1-e^{0.302(t+0.455)})^{2.85}$. the following equations for length-weight relationship were determinated for females and males, respectively. W= 0.009082 $L^{3.19}$ ; W= 0.022537 $L^{2.85}$
Sex and age compositions, age-length, age-weight relations, condition factors were investigated on 332 chub (Leuciscus cephalus L. 1758) specimens caught in the Topçam Dam Lake between June 1999 and June 2000. the age compositions of specimens were between I-Vn years and sex percentages were calculated as 72.89%for females and 27.1 l%for males. the forked length and weight of females and males varied from 10.7-26.2 cm, 19.8-344.0 g and 9.7-23.5 cm, 16.2-203.1 g., respectively. Growth of population was the most rapid at the first years of life afterwards growth ratio was slower. Growths were calculated by the Von Bertalanffy the following growth equations were found for females and males, respectively. Lt= 40.18 $(1.e^{-0.121(t+1.575)})$ ; Wt= 1188.43 ($(1.e^{-0.121(t+1.575)})^{3.19}$ Lt= 27.08$(1-e^{-0.302(t+0.455)})$ ; Wt= 272.86 $(1-e^{0.302(t+0.455)})^{2.85}$. the following equations for length-weight relationship were determinated for females and males, respectively. W= 0.009082 $L^{3.19}$ ; W= 0.022537 $L^{2.85}$
Açıklama
Anahtar Kelimeler
Balıkçılık, Zooloji
Kaynak
Su Ürünleri Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
20
Sayı
3-4
