Hemibagrus wyckii is a species of catfish; family (Bagridae). It is occasionally called as the crystal-eyed catfish. It is a carnivorous freshwater finfish; inhabitant to Indonesia, where its local name is “gesso”.1,2 Unfortunately, natural stocks is being abridged because of overexploitation; leading to elevated price (USD per 13.33 kg–1 body weight)2,3. H. wyckii present in the Kampar Kanan river is at verge of extinction. It had been reported that reduction in the populations of H. wyckii is because of overexploitation (harvesting species from the wild at rates faster than natural populations can recover) as well as environmental degradation4,5.
Current researches show that domestication has led towards decreased population of H. wyckii broodstock rivers and reservoir. For proper domestication, ample knowledge regarding the biology and population structure (morphometric attributes )of this species is required, which is not followed effectively. The authentic information of morphometric characters as well as biology, ecology, evolution, behavior, conservation, water resource management, stock assessment and commercial status are crucial to for optimal domestication6,7.
Netti Aryani and companion scientists conducted a research to assess the morphometric characters of H. wyckii obtained from the Koto Panjang Reservoir, Kampar Kanan and Kampar Kiri rivers. During this investigation, Netti and team collected 25 fish and employed the truss morphometric procedure to examine the morphometric properties, for which 29 characters were deliberated. Morphometric data of H. wyckii was evaluated by utilizing one-way ANOVA (SPSS version 17.0). Moreover, principal component analysis (PCA) was employed to assess the connection between dissimilar factors and morphometric attributes. While, to measure the distribution in different locations, component canonical analysis (CCA) was used and genetic distance was examined through hierarchical cluster.
At the end of the investigation, scientists concluded that H. wyckii from the Kampar Kanan river possess more constructive morphometric characters than those fish collected from the Koto Panjang Reservoir and Kampar Kiri river. Therefore, the broodstock of H. wyckii from the Kampar Kanan river should be used for domestication. Moreover, these findings will assist to defend the H. wyckii broodstock from extinction and accelerate the population of H. wyckii for aqua farming in future.
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17 November, 2019