Length–weight relationships of Baikal oilfish (Cottoidei: Comephorus)
Keywords:Comephorus, length, weight, length–weight relationships, LWR, adaptation, fisheries management, Lake Baikal
The paper presents the length-weight relationship (LWR) for Comephorus dybowskii Korotneff, 1904 (W=6.63*SL3.59 (R2=0.99)) and for Comephorus baikalensis (Pallas, 1776) (W=7.13*SL3.14 (R2=0.98)). The analysis is based on measurements of individuals caught in feeding season in 2022: C. dybowskii (401 samples) and C. baikalensis (189). The urgency of the research is determined by the necessity to obtain the LWR ratio to enhance the accuracy of resource studies using remote methods. Significant positive allometry of weight is shown for both fish species. It is assumed that the differences between LWR ratios in oilfish are a consequence of the adaptation of these species to a life in the pelagic zone.
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