Length-Weight Relationships and Condition Factor of 11 Fish Species From the Timis River, Western Romania

Abstract

SUMMARY (Rhodeus amarus).These are the first estimated parameters of length-weight relationships for the fish species inhabiting the Timiş River basin. In addition, from all studied species data regarding LWRs for cyprinids Romanogobio albipinnatus Lukasch, 1933 and R. kesslerii Dybowsky, 1862 were unknown before to FishBase.

Length-weight and length-length relationships of the European bitterling, Rhodeus amarus (Bloch, 1782) inhabiting inland waters of Samsun Province

“…According to this study bitterling has positive allometric growth for Terme and Terice Streams. The results were determined similar, except for those by [22,24,25]. There are a few studies showing different growth type from R. amarus inhabiting Terme and Terice Stream (isometric or negative allometry) [20,21,23].…”

“…Most of the researches used total length while the others use fork and standard length. For R. amarus most researches measured total length [20,23,24,33,34] while some researches used fork length [32] and standard length [21,25]. In this study, coefficient of correlation (LLR) was estimated as >0.95 (P<0.001).…”

“…In this study b values of LWR was 3.479, 3.586 for Terme Stream and Terice Stream, respectively. The b value of LWR ranged 2.288-3.400 in different studies [20][21][22][23][24][25][32][33][34][35] (Table 4). According to this study bitterling has positive allometric growth for Terme and Terice Streams.…”

“…Studies on this species are concentrated on behavioural aspect of reproduction, feeding, population genetic structure, systematics and morphology [15][16][17][18][19]. However, there are limited studies about bitterling population dinamics [20][21][22][23][24][25]. In this context, length-weight and length-length relationships are very important for fisheries researchs.…”

Select biological characteristics of the mossul bleak Alburnus mossulensis Heckel, 1843(Actinopterygii: Cyprinidae) in the Ataturk Dam Lake, Turkey

“…Average condition factors in specimens in Karakaya Dam Lake were found to be 0.90 ±0.1 for females and 0.84 ± 0.11 for males (Uckun and Gokce, 2014). The condition factor of A. mossulensis species shows significant similarities compared to other species, such as Alburnus esherichii (Cetinkaya et al, 2015) and A. alburnus (Stavrescu-Bedivan et al, 2017). The condition factor is an index reflecting interaction between biotic and abiotic factors in the physiological conditions of fishes (Nikolsky, 1963).…”