Morphological variations of plicofollis species (Siluriformes: Ariidae) in Peninsular Malaysia: an insight into truss network Approach

Siti Waznah Abdurahman, and Mohd Azmi Ambak, and Shahreza Md Sheriff, and Seah, Ying Giat and Ahmad Azfar Mohamed, and Ahmed Jalal Khan Chowdhury, (2016) Morphological variations of plicofollis species (Siluriformes: Ariidae) in Peninsular Malaysia: an insight into truss network Approach. Sains Malaysiana, 45 (1). pp. 1-7. ISSN 0126-6039


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Ariid catfishes, belong to family Ariidae is considered as one of the taxonomically problematic groups, which is still under review by fish taxonomist globally. Species level identification of some ariids often resulted in species misidentification because of their complex characters and very similar morphological characters within genera. A vigilant and detail observation is very important during the species level identification of ariid species. In these contexts, this study was carried out in order to determine the morphological variations of one of the ariid genera, Plicofollis, which have been giving misleading taxonomic information in the south-east Asian countries. A Truss network technique was used throughout the study period. The study was conducted based on 20 truss measurements using 22 to 23 specimens per species, namely P. argyropleuron, P. nella and P. tenuispinis found in Peninsular Malaysian waters. Morphological variations were determined using a multivariate technique of discriminant function analysis (DFA). The results obtained in this study showed that discriminant analysis using truss network measurements has produced very clear separations of all the species in Plicofollis group. Several important morphological characters have been identified, which represent body depth and caudal regions of the fish. The documentary evidences of these variables could be considered as the constructive functional features, which could enable us to assess more accurately to distinguish the species within this complex Ariidae family.

Item Type:Article
Keywords:Ariidae; DFA; morphology; Plicofollis; P. argyropleuron; P. nella; P. tenuispinis; Truss network
Journal:Sains Malaysiana
ID Code:9563
Deposited By: ms aida -
Deposited On:02 Mar 2016 04:29
Last Modified:14 Dec 2016 06:50

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