Length-weight and length-length relationships of four species (Barbus lacerta Heckel, 1843), Oxynoemacheilus angorae (Steindachner, 1897), Squalius lepidus (Heckel, 1843) and Pseudorasbora parva (Temminck & Schlegel, 1846) from the Sirwan River (western I

Abstract

Summary The study describes the length–weight and length–length relationships for three cyprinid species, namely Barbus lacerta, Squalius lepidus and Pseudorasbora parva, and a balitorid species, Oxynoemacheilus angorae from the Sirwan River (located in Kurdistan and Kermanshah provinces, Iran. This study presents the first reference on LWR for most of the species in their distribution range.

Length-weight and length-length relationships for seven fish species from the Zohreh River, Iran

“…The differences observed in the length–weight and length–length relationships in fishes might be affected by several factors, including differences in sample size, area/season, habitat, population, gonad maturity, sex, diet, stomach fullness, health, preservation techniques and locality, as well as differences in the observed length range (Froese, ; Hasankhani et al., ; Keivany & Zamani‐Faradonbeh, ; Moutopoulos & Stergiou, ; Tesch, ; Zamani‐Faradonbe, Eagderi, & Ghojoghi, ).…”

“…Understanding of the length-weight relationships (LWRs) and lengthlength relationships (LLRs) in fisheries science is necessary to estimate the biomass (Altin, Ayyildiz, Kale, & Alver, 2015;Froese, 2006;Froese, Tsikliras, & Stergiou, 2011;Hasankhani, Keivany, Daliri, Pouladi, & Soofiani, 2014;Sharma, Mir, Singh, Akhtar, & Pandey, 2015), and management and assessment of stocks that are important tools in fishery research (Ak, Kutlu, & Aydın, 2009). This relationship is generally presented by the equation W = aL b .…”

Length-weight relationships of fish species in Kordan River (Namak Lake basin), Iran

“…() and Hasankhani et al. () reported the value of exponent b in O. angorae as 3.01 and 2.81, respectively, similar to 2.83 for O. bergianus in the Kordan River. The observed small differences can be the result of a lack of data on the same species ( C. buhsei and O. bergianus ), different sample sizes, the preservation techniques, and/or the specific population characteristics due to local environmental conditions, and the sex ratio (Golzarianpour et al., ).…”

Length-weight relationships of four fish species caught in the Northern Persian Gulf (Horomzgan waters, Iran)

“…Log-log plots of the length-weight pairs were performed to identify outliers (Froese, 2006;Froese et al, 2011). The least square residuals method (LSRM) was used for computing the optimize values of a and b (Haddon, 2011;Hasankhani et al, 2013).…”