Meristics and morphometrikcs characters of Scylla serrata in Youtefa and Kalimaro, Papua mangrove ecosystem

Abstract

Observations of the meristic and morphometric characteristics of S.serrata will be carried out in Youtefa Bay, Jayapura, and Kalimaro, Merauke. The research objective was to determine the morphometric and meristic characteristics and their relationship with the mangrove ecosystem. Homogeneity test results showed homogenous results with a correlation (r) 0.80 and (r) 0.85. The results obtained were 96.05% which was not significantly different in meristic and morphometric characteristics. The substrate fraction of Kalimaro is dominated by clay (26.53%) and fine sand (16.84%) which means that the type of substrate is sandy loam, while Youtefa is dominated by coarse sand (27.00%) clay (15.45%), or muddy sand type. For the C-organic deposits on Youtefa (4.92%) and Kalimaro (9.58%) substrates in the good category, but the correlation results showed Kalimaro (r) 95% while Youtefa (r) -95% with a confidence interval (p> 0.05) is directly proportional to the abundance of Kalimaro (39 individuals/m2) and Youtefa (11 individuals/m2). Mangrove density in Youtefa (4,800-7,800 individuals/ha) is dominated by Rhizophora 73.1% and Kalimaro (2,600-3,700 individuals/ha) is dominated by Avicennia 75%. Mangrove ecosystem has a close relationship on meristic and morphometric characteristics compared to Youtefa Bay.