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Discrimination analysis of hybrid Pangasianodon hypophthalmus (Sauvage, 1983) (♀) × Pangasius nasutus (♂) (Bleeker, 1976) and its parental species


Mohamed Yusoff, S. F. and Christianus, Annie and Ismail, Muhammad Fadhil Syukri and Esa, Yuzine and Mohd Daud, Hassan and Hamid, N. H. and Abu Bakar, Siti Nadia and Zulkifle, Muhamad Syafiq (2019) Discrimination analysis of hybrid Pangasianodon hypophthalmus (Sauvage, 1983) (♀) × Pangasius nasutus (♂) (Bleeker, 1976) and its parental species. Journal of Survey in Fisheries Sciences, 5 (2). pp. 49-63. ISSN :2368-7487


Comparative analysis was performed to discriminate a hybrid produced from the crossbreed of Pangasianodon hypophthalmus (♀) and Pangasius nasutus (♂) and its parental species based on morphology appearances and morphometric characters. Morphological structures of the vomerin and palatal teeth varied between the hybrid and both parents. Results of the univariate analysis revealed 22 morphometric characters were significantly different between the hybrid and its parental species. Under the stepwise discriminate function analysis, the first Function explained 86.10% of total variations and 13.90% in Function 2. Of the 30 characters, only 10 characters which include prepelvic, caudal peduncle length, dorsal fin length, pectoral fin length, anal fin height, anal fin length, adipose fin length, interorbital length, distant to isthmus, and predorsal length can be used to significantly differentiate these species. The predicted fish groups exhibited characters which 100% differentiate and validate them into their respective group. Examination on vomerin and palatal teeth distinct the hybrid and its parental species.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Faculty of Veterinary Medicine
Institute of Bioscience
DOI Number: https://doi.org/10.18331/SFS2019.5.2.6
Publisher: Green Wave
Keywords: Discriminate function analysis; Morphometric; Pangasianodon hypophthalmus; Pangasius nasutus; Hybrid
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 31 Mar 2021 06:42
Last Modified: 31 Mar 2021 06:42
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.18331/SFS2019.5.2.6
URI: http://psasir.upm.edu.my/id/eprint/79405
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