Spatial distribution and abundance of Channa striata Bloch1793 in Sempor Reservoir, Kebumen Central Java

Abstract

Channa striata are one of the essential catches in freshwater, including Sempor Reservoir. This study aimed to investigate the spatial distribution and abundance of Channa striata and the correlation between the abundance of snakehead and water quality parameters. The study was undertaken in Sempor Reservoir Central Java from March to October 2020. The method included a survey with five Stations of sampling. Distribution data were tabulated using the Microsft Excel program. Data of abundance and water quality were subjected to ANOVA. The correlation between the abundance and water quality was analyzed with the Principle Component Analysis (PCA). The result showed that the distribution of snakehead fish in Sempor Reservoir covered a wide range across the inlets, middle, outlets, and beyond the dam. The catch fish was 110-390 mm long and weighed 12-588g. The male and female fish percentage was 55.68% vs 44.32%, so the female to male ratio was 0.8:1. The highest abundance of snakehead fish was in the KW station (33%). The distribution of C.striata was more affected by the fish behaviour in selecting their habitat than the water temperature, depth, and transparency. The significance of this study expects to lay the foundation for snakehead fisheries management in Sempor Reservoir.

Exploitation of striped snakehead (Channa striata) in Sempor Reservoir, Central Java, Indonesia: A proposed conservation strategy

“…Most male fish were caught at the KW station (12 individuals while female fish tended to be caught at the KS station (19 individuals). The largest male fish were in the size range of 270-309 mm (five individuals) at the KW station, while most female fish were in size range of 230-269 mm (six individuals) (Table 4) (Setyaningrum et al 2021).…”

“…This species prefers aquatic habitats with dense aquatic vegetation, shallow and transparent water. It is necessary to implement a habitat and species conservation strategy for C. striata so that its population can be maintained (Biswas et al 2015;Duong et al 2019;Setyaningrum et al 2021). There have been few studies of the exploitation rate of snakehead fish in Java, particularly in reservoir waters.…”