Length‐weight relationship of fish species from Central Amazon floodplain

Length‐weight relationship (LWR) for 39 freshwater fish species captured in the Catalão Lake, a floodplain area at the confluence of the Amazonas and Negro rivers is presented. LWRs were calculated based on fish sampled over 18 years (1999–2017) using a set of ten gill nets with different mesh sizes...

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Veröffentlicht in:Journal of applied ichthyology 2020-12, Vol.36 (6), p.837-841
Hauptverfasser: Zuchi, Nágila, Röpke, Cristhiana, Shibuya, Akemi, Farago, Thatyla, Carmona, Marina, Zuanon, Jansen, Amadio, Sidineia
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Sprache:eng
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Zusammenfassung:Length‐weight relationship (LWR) for 39 freshwater fish species captured in the Catalão Lake, a floodplain area at the confluence of the Amazonas and Negro rivers is presented. LWRs were calculated based on fish sampled over 18 years (1999–2017) using a set of ten gill nets with different mesh sizes, monthly immersed in water for 24‐hr with 6‐hr interval catches. Measurements were done for standard length (SL – 0.1 cm precision) and total weight (TW – 0.01 g precision). The LWRs were calculated by the linear regression of natural log‐transformed SL and TW data: TW = a × SLb. All statistical analyses were performed with R software. From all species considered, 32 are new LWR records for the international literature as well as for the Amazonian ichythyofauna; additional records expand the known size range for seven species.
ISSN:0175-8659
1439-0426
DOI:10.1111/jai.14082