Identification, Abundance and diversity, richness and evennes indices in Karganrud River fishes (Guilan province)

Subject Areas : New Technologies in Aquaculture Development

Received: 2020-12-08 Accepted : 2020-12-08 Published : 2011-08-23

Keywords: fish, Species Diversity, Abundance, Keywords: Guilan province, Karganrud River,

Abstract :

Abstract       KarganrudRiver which is in south-west Caspian Sea, is important for spawning of anadromous fishes, feeding of estuary fishes and special fish population, too. Main purposes of this study were: Identification of fishes and their abundance, diversity, richness and evennes indices and present role of the river in restocking. Studied fishes have been sampled in 7 stations from Fall 2001 until Summer 2002 using with Electric gear, cast net and beach seine. Results showed 18 fish species belong to 8 families exist in the river so that Cyprinidae with 10 species and 90.05 % of total populations was  dominant. Alburnoides eichwaldi, Capoeta capoeta and Alburnus hohenackeri with29.58%, 29.15%  and 19.87%were dominant, respectively. There were 10 species of freshwater resident species, 4 species of migratory or anadromous fishes and 4 species of marine or estuary fishes in Karganrud River and in the river were identified 5 alein species, too. Shannon species diversity was determined minimum in autumn, (1.050) and maximum in summer (1.679), Margalef species richness was minimum in autumn (0.635) and maximum in summer (2.228) and Peilo species index was minimum in summer (0.593) and maximum in autumn (6.520) and these indices had changes in related to station changes. This study showed Karganrud River is potentially a suitable river for anadromous fishes restoring in south Caspian Sea.