The feeding features of the pike-perch (Stizostedion lucioperca) population in Lake Beyşehir

BALIK İ.

Turkish Journal of Zoology, vol.23, no.2, pp.189-194, 1999 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 2
  • Publication Date: 1999
  • Journal Name: Turkish Journal of Zoology
  • Journal Indexes: Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.189-194
  • Keywords: Cannibalism, Lake Beyşehir, Pike-perch, Stizostedion lucioperca, Stomach content
  • Akdeniz University Affiliated: No

Abstract

The stomach contents of pike-perch (Stizostedion lucioperca) in Lake Beyşehir were investigated. The stomachs of 474 pike-perch were studied between March 1995 and February 1996. 76.6% of specimens had full and 23.4% had empty stomachs. The contents of the stomachs consisted of Gammarus sp. (77.5%), Mysis sp. (14.7%), Chirinomidae (4.3%). pike-perch (2.7%) and others (0.8%). Around 20.9% cannibalism was estimated and it was widespread among individuals with a length of 11-60 cm. In addition, it appears that pike-perch can consume fellow specimens with a mean size of 35.9% of its length.