Study of food habits and preference of the Exotic Rainbow trout )Oncorhynchus mykiss (Walbaum, 1792)) in Madarsoo stream, Golestan National Park

Abdoli, Asghar; Mirdar, Javad

doi:10.22059/jfisheries.2013.35693

Study of food habits and preference of the Exotic Rainbow trout )Oncorhynchus mykiss (Walbaum, 1792)) in Madarsoo stream, Golestan National Park

Document Type : Research Paper

Authors

Asghar Abdoli

Javad Mirdar

10.22059/jfisheries.2013.35693

Abstract

Study of food habits and preference of the Exotic Rainbow trout )Oncorhynchus mykiss (Walbaum, 1792)) in Madarsoo stream, Golestan National Park

Abundance and diet of Oncorhynchus mykiss were examined in Madarsoo River in Golestan National Park. A total of 144 fish specimens investigated (with average Total length of 190mm and Total weight of 80g). Ephemeroptera was the most abundant of collected benthic invertebrates. The Ivelev index showed that Ephemeroptera, Gammaridae and Tricoptera were the most important food items for O.mykiss. Our result has indicated that species is the potential food competitor of fish species, Paracobitis malapterura, Neogobius melanostomus, Neogobius fluviatilis, Albunoides eichwaldii in Golestan National Park stream.
Keywords: Oncorhynchus mykiss, diet, benthic invertebrates, Madarsoo River, Golestan National Park.

Keywords

Keywords: Oncorhynchus mykiss

Diet

benthic invertebrates

Madarsoo River

Golestan national park

Subjects