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dc.contributor.authorFazhan, Hanafiah
dc.contributor.authorWaiho, Khor
dc.contributor.authorQuinitio, Emilia
dc.contributor.authorBaylon, Juliana C.
dc.contributor.authorFujaya, Yushinta
dc.contributor.authorRukminasari, Nita
dc.contributor.authorAzri, Mohammad Farhan Darin
dc.contributor.authorShahreza, Md. Sheriff
dc.contributor.authorMa, Hongyu
dc.contributor.authorIkhwanuddin, Mhd
dc.identifier.citationFazhan, H., Waiho, K., Quinitio, E., Baylon, J. C., Fujaya, Y., Rukminasari, N., Azri, M. F. D., Shahreza, Md. S., Ma, H., & Ikhwanuddin, M. (2020). Morphological descriptions and morphometric discriminant function analysis reveal an additional four groups of Scylla spp. PeerJ, 8, e8066.en
dc.description.abstractThere are four species of mud crabs within the genus Scylla, and most of them live sympatrically in the equatorial region. Apart from a report in Japan about the finding of a natural Scylla hybrid more than a decade ago after the division of genus Scylla into four species by Keenan, Davie & Mann (1998), no subsequent sighting was found. Thus, this study investigates the possible natural occurrence of potential hybridization among Scylla species in the wild. A total of 76,211 individuals from mud crab landing sites around the Malacca Straits, South China Sea and Sulu Sea were screened. In addition to the four-purebred species, four groups (SH 1, n = 2, 627; SH 2, n = 136; SH 3, n = 1; SH 4, n = 2) with intermediate characteristics were found, mostly at Sulu Sea. Discriminant Function Analysis revealed that all Scylla species, including SH 1 - 4, are distinguishable via their morphometric ratios. The most powerful discriminant ratios for each character and the top five discriminant ratios of males and females were suggested. The carapace width of SH 1 males and females were significantly smaller than pure species. Based on the discriminant ratios and the description of morphological characters, we hypothesize that the additional four groups of Scylla with intermediate characteristics could be presumed hybrids. Future work at the molecular level is urgently needed to validate this postulate.en
dc.subjectDiscriminant function analysisen
dc.subjectPresumed hybridsen
dc.subjectMud craben
dc.titleMorphological descriptions and morphometric discriminant function analysis reveal an additional four groups of Scylla sppen

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  • Journal Articles [1178]
    These papers were contributed by Department staff to various national and international journals.

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