Authors : Z. Arzu Becer Ozvarol and Gurkan Salih Karabacak
Abstract: This study was conducted between November 2008 and October 2009 and examined changes in the population structure of pikeperch (Sander lucioperca L., 1758) in Karacaoren-I Dam lake, located in Turkey. About 37.2% of the 113 pikeperch individuals caught were found to be female and 62.8% were male. When the age distribution was analyzed, 1 and 5 year old age groups were seen to constitute the majority of the population. It was observed that fork lengths differ between 19.7 and 68 cm and body weights differ between 77.5 and 3472.9 g. Stomach contents were analyzed and mostly (89.41%) consisted of sand smelt (Atherina boyeri Risso, 1810). The average condition factor value of the pikeperch caught in Karacaoren-I Dam lake was found 1.001. A serious decrease in the pikeperch population was noted in this lake, similar to other lakes. Moreover, it was seen that the balance in the lake has changed over approximately the last 10 years and that species detected in previous studies have been replaced by other species.
Z. Arzu Becer Ozvarol and Gurkan Salih Karabacak, 2011. Changes in the Population Structure of Pikeperch (Sander lucioperca Linnaeus, 1758) Karacaoren-I Dam Lake, Turkey. Journal of Animal and Veterinary Advances, 10: 224-228.