Length-weight relationship and condition factor of fish in shallow water habitats, Khuzestan Province, Iran

Document Type: Original Article

Authors

1 Department of Biodiversity and Ecosystem Management, Institute of Environmental Sciences Research, Shahid Beheshti University, Tehran, Iran.

2 Assistant Professor, Department of Environmental Sciences, Faculty of Sciences, University of Zanjan, Iran,

3 Department of Biodiversity and Ecosystem Management, Institute of Environmental Sciences Research, Shahid Beheshti University, Tehran, Iran

10.22120/jwb.2019.113141.1082

Abstract

This study evaluated Length-Weight Relationships (LWRs) and Condition factor (K) of the juvenile and young adult fish from shallow littoral zones in some aquatic ecosystems located in Khuzestan province, Iran. On June 2015, the specimens were sampled using a seine net from the Shadegan Wetland, the Dez and the Karkheh Rivers in the time period of increased juvenile recruitment. The LWRs of fish was calculated using linear regression log formula as log W=loga+blogTL and the K estimated using K=W/L3. A total of 18 species belong to 5 families collected in the stations. Exotic species comprised 33.33% of the total ichthyofauna. The variation of b-value ranges between 2.65 and 3.26 and growth pattern is isometric in all species except Acanthobrama marmid (Heckel 1843). Since, the amount of K was higher than 1 in all species, it can be concluded that the sampling stations are favorable for the growth of the fish. The shallow waters have considerable importance in juvenile lifestyle, therefore, it is necessary to conserve and restore the habitats.

Keywords



Articles in Press, Accepted Manuscript
Available Online from 25 September 2019
  • Receive Date: 19 August 2019
  • Revise Date: 08 September 2019
  • Accept Date: 25 September 2019