Investigation of morphological characteristics of Salmo trutta in Lar Dam Lake and watershed basin

Document Type : article

Authors

1 Inland Waters Aquaculture Research center, Iranian Fisheries Science Research Institute (IFSRI), Agriculture research Education and Extension Organization (AREEO), Bandar-e Anzali, Iran

2 Research Instructor, Islamic Azad University- Anzali Branch-IRAN , 3 Iranian Fisheries Science Research Institute (IFSRI), Agriculture research Education and Extension Organization (AREEO)

3 Iranian Fisheries Science Research Institute (IFSRI), Agriculture research Education and Extension Organization (AREEO)

Abstract

Salmo trutta is one of the native fish that is endangered due to the sensitivity to environmental pollutants (entry of various pollutants including domestic, industrial, detergents, petroleum, etc.) of its generation. This study was carried out on 140 fresh salmon trout (Salmo trutta) fish from the mountainous region of Lar Lake in 2008 and 2009. The study their demographic structure. Based on Kruskal-Wallis non-parametric test, the statistical difference in gonadal weight (1.26 ± 0.016), relative weight of gonad (1.21 ± 0.020), Fulton index (1.50 ± 0.017) and Clark index (0.99 ± 0.015) was observed (p <0.05). T-test did not show any statistical difference in indexes such as body weight (153.44 ± 9.60 gr) and fork length (21.72 ± 1.85 cm) in both males and females at different ages (p> 0.05).

Keywords

Advanced Aquaculture Sciences Journal
Volume 2, spring
June 2018
Pages 69-82

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