Feeding characteristics of Neogobis caspius in the south west coastline of the Caspian Sea (Gilan Province)
Publish place: Iranian Journal of Fisheries Sciences، Vol: 9، Issue: 1
Publish Year: 1388
Type: Journal paper
Language: English
View: 210
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Document National Code:
JR_JIFRO-9-1_010
Index date: 16 February 2022
Feeding characteristics of Neogobis caspius in the south west coastline of the Caspian Sea (Gilan Province) abstract
Neogobius caspius is an endemic species of the Caspian Sea which plays an important role in food chain as a predatory fish. The main aim of this study was to investigate selected feeding characteristics of Neogobius caspius in the south west coasts of the Caspian Sea. Monthly sampling was carried out using a bottom trawler at three stations (Astara, Anzali and Chabuksar) in three depths (0-5, 5-10 and 10-15m) on a monthly basis from October 2004 to September 2005. Relative gut length (RLG) was less than one suggesting that this species is carnivorous. RLG was significantly lower in older fish but gut length was longer (P<0.05). I ntensity of fullness was below the favorite degree (IF<400) from October to March, however, it was higher (400caspius mainly fed on molluscs (Food preference, FP=100%), worms (FP=89%) and crustaceans (FP=74%), hence, this species is considered as euryphagus species.
Feeding characteristics of Neogobis caspius in the south west coastline of the Caspian Sea (Gilan Province) Keywords:
Feeding characteristics of Neogobis caspius in the south west coastline of the Caspian Sea (Gilan Province) authors