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Abstract The high activity in coastal regions contributes to the abundance of coastal biota such as Matuta victor . This crab is a supporting organism in aquatic ecosystems, playing an important role in food webs. It provides ecosystem services that enhance ecosystem productivity, including improved fishery products with economic value. This research aims to report the distribution of M. victor and to analyses the characteristic of COI mitochondria. Collection of specimens was carried out in Carita (n=7), Ujung Kulon (n=2), Bomo (n=3), and Muncar (n=1). The specimens were analyzed using COI mitochondria fragments. Based on carapace size, the male M. victor had a carapace length (CL) and and carapace width (CW) with range of 16.56-40.94 mm and 26.08-63.11 mm, respectively. Meanwhile, females had carapace size with CL 17.44-33.79 mm and CW of 24.01-54.54 mm. A total of 814 bp sequence data was obtained. Based on genetic distance and phylogenetic analysis, specimens of M. victor from the western and eastern of the Java coastline had genetic similarity. This result suggests that gene flow occurs between locations. It can be concluded that the M. victor in these locations may have the same ancestor and provided distribution patterns of this species.
Syuhada et al. (Sat,) studied this question.