Length-weight and length-length relationships for eight fish species from the Jarrahi River, southwestern Iran

Abstract

Summary Length–weight and length–length relationships were estimated for eight fish species belonging to three families from the Jarrahi River in southwestern Iran. The study was performed between June 2009 and September 2011. Weight–length relationships were estimated using the logarithmic form of the equation W = aLb. The b values varied between 2.96 and 3.61 and determined as 3.42 for Alburnus mossulensis Heckel, 1843; 3.33 for Alburnoides idignensis Bogutskaya and Coad, 2009; 2.85 for Barbus grypus Heckel, 1843; 3.61 for Barilius mesopotamicus Berg, 1932; 3.16 for Cyprinion kais (Heckel, 1843); 3.36 for Cyprinion macrostomum Heckel, 1843; 3.27 for Paraschistura nielseni (Nalbant and Bianco, 1998); and 2.96 for Glyptothorax silviae Coad, 1981. This study presents the first LWR and LLR references for these species in the Jarrahi River.

Length-weight and length-length relationships for four fish species from Talkhehrud River, Urmia Lake basin, Iran

“…The length–weight relationship in fishes is affected by a number of factors including season, habitat, population, gonad maturity, sex, diet, stomach fullness, health, sample size, preservation techniques and locality (Esmaeili, ; Froese, ; Ghanbarifardi, Ghasemian, Aliabadian, & Pehpuri, ; Keivany & Zamani Faradonbeh, ; Tesch, ), which were not considered in the present study; differences in the LWRs could be potentially attributed to the combination of one or more of the factors given above. The results of this study can provide useful insights for conservation and management of these species that are threatened by water pollution, overfishing, and river–lake disconnection in the regions.…”

Artificial Neural Networks (A New Statistical Approach) Method in Length-Weight Relationships of Alburnus Mossulensis in Murat River (Palu-Elaziğ) Turkey

“…Alkan Uckun and Gokce (2015) assessed the age, growth, and reproduction of A. mossulensis in Karakaya Dam Lake (Turkey). Keivany et al (2015Keivany et al ( , 2016; Radkhah (2016) and Keivany and Zamani-Faradonbeh (2017) studied the length-weight relationship and condition factor of A. mossulensis in Beheshtabad River, Bibi-Sayyedan River, Hamzeh-Ali Spring and Jarrahi River. Benzer, 2016, 2018;Ozcan and Serdar, 2018a).…”