The growth and reproduction of white bream (Blicca bjoerkna L. 1758) in an oligo-mesotrophic lake in northwest Anatolia (Sapanca, Turkey)

Hacer Canan OKGERMAN; Mahmut ELP; Sibel ATASAGUN

Makale detayları

The growth and reproduction of white bream (Blicca bjoerkna L. 1758) in an oligo-mesotrophic lake in northwest Anatolia (Sapanca, Turkey)

Yazarlar:

Hacer Canan OKGERMAN | Mahmut ELP | Sibel ATASAGUN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Biology 2012 Vol.36 Issue 1, pp.125-134

Belge Tipi:

Makale

Yayın Tarihi:

12/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000812728

Sıklık:

İki Aylık

eISSN:

1303-6092

pISSN:

1300-0152

Anahtar kelimeler:

Özet:

 

Growth parameters and the reproduction period of white bream (Blicca bjoerkna L. 1758) sampled from Sapanca Lake were determined monthly between November 2000 and October 2001. Three hundred and fifty white bream specimens caught ranged in age from 1+ to 9+ years, and the majority of the samples consisted of individuals of the 5+-year-old age group. The von Bertalanffy equation was determined as Lt = 22.169 (1 - exp {-0.215[t + 0.986]}), Ø': 2.02 for males and Lt = 31.917 (1 - exp {-0.122[t + 1.087]}), Ø': 2.10 for females. The length-weight relationship was estimated as W = 0.0046 TL exp. 3.315 ± 0.002 for males (r2 = 0.9653, P < 0.05), and W = 0.0036 TL exp. 3.417 ± 0.002 for females (r2 = 0.9671, P < 0.05). Regression coefficients for sex were significant (t-test, P < 0.05). The slope (b) significantly differed (ANCOVA, P < 0.05) between months. The fact that the b values for male and female white breams differed from 3.0 indicates that there was positive allometric growth. Sex ratio was 1:1.36 (X2; P < 0.05). Spawning period of white breams began at the end of April and continued until the beginning of July; water temperature during this period ranged between 13.7 and 28.5 °C.

 

Growth parameters and the reproduction period of white bream (Blicca bjoerkna L. 1758) sampled from Sapanca Lake were determined monthly between November 2000 and October 2001. Three hundred and fifty white bream specimens caught ranged in age from 1+ to 9+ years, and the majority of the samples consisted of individuals of the 5+-year-old age group. The von Bertalanffy equation was determined as Lt = 22.169 (1 - exp {-0.215[t + 0.986]}), Ø': 2.02 for males and Lt = 31.917 (1 - exp {-0.122[t + 1.087]}), Ø': 2.10 for females. The length-weight relationship was estimated as W = 0.0046 TL exp. 3.315 ± 0.002 for males (r2 = 0.9653, P < 0.05), and W = 0.0036 TL exp. 3.417 ± 0.002 for females (r2 = 0.9671, P < 0.05). Regression coefficients for sex were significant (t-test, P < 0.05). The slope (b) significantly differed (ANCOVA, P < 0.05) between months. The fact that the b values for male and female white breams differed from 3.0 indicates that there was positive allometric growth. Sex ratio was 1:1.36 (X2; P < 0.05). Spawning period of white breams began at the end of April and continued until the beginning of July; water temperature during this period ranged between 13.7 and 28.5 °C.

Makale detayları

The growth and reproduction of white bream (Blicca bjoerkna L. 1758) in an oligo-mesotrophic lake in northwest Anatolia (Sapanca, Turkey)

Yazarlar:

Hacer Canan OKGERMAN | Mahmut ELP | Sibel ATASAGUN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Biology 2012 Vol.36 Issue 1, pp.125-134

Belge Tipi:

Makale

Yayın Tarihi:

12/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000812728

Sıklık:

İki Aylık

eISSN:

1303-6092

pISSN:

1300-0152

Key words: White bream

Blicca bjoerkna L. 1758

Sapanca Lake

von Bertalanffy length-weight relationship

GSI

Sayı

Makale detayları

The growth and reproduction of white bream (Blicca bjoerkna L. 1758) in an oligo-mesotrophic lake in northwest Anatolia (Sapanca, Turkey)

Yazarlar: Hacer Canan OKGERMAN | Mahmut ELP | Sibel ATASAGUN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Biology 2012 Vol.36 Issue 1, pp.125-134

Belge Tipi: Makale

Yayın Tarihi: 12/2011

Belge Dili: Türkçe

Document ID (Org No.): 2000812728

Sıklık: İki Aylık

eISSN: 1303-6092

pISSN: 1300-0152

Key words: White bream

Blicca bjoerkna L. 1758

Sapanca Lake

von Bertalanffy length-weight relationship

GSI

Sayı

Yazarlar:

Hacer Canan OKGERMAN | Mahmut ELP | Sibel ATASAGUN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Biology 2012 Vol.36 Issue 1, pp.125-134

Belge Tipi:

Makale

Yayın Tarihi:

12/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000812728

Sıklık:

İki Aylık

eISSN:

1303-6092

pISSN:

1300-0152