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Penentuan pH optimum untuk pertumbuhan kepiting bakau Scylla serrata dalam wadah terkontrol
Corresponding Author(s) : Yuni Puji Hastuti
Jurnal Akuakultur Indonesia,
Vol. 15 No. 2 (2016): Jurnal Akuakultur Indonesia
Abstract
ABSTRACT
One of the abiotic factors that affects the growth and the survival of crabs is pH. The optimum pH media will give maximum impact on mangrove crabs because it is related with the osmoregulation process. This study aimed to examine the effect of pH on the survival rate (SR) and specific growth rate (SGR) of mangrove crab Scylla serrata through the reaction of physiological condition. This study consisted of the treatments with the pH medium 5 (A), pH medium 6 (B), pH medium 7 (C), and pH medium 8 (D). The crab’s maintenance in different pH gave a significant effect (P<0.05) on the survival rate of the crabs. The pH treatments also gave a significant effect (P<0.05) on the SGR of the crabs. The low level of crab stress at pH 7 was described by the total value of high hemocyte and the high osmotic load so that the pH 7 was the optimum condition for the crabs.
Keywords: pH, survival, specific growth rate, mangrove crabs
ABSTRAK
Salah satu faktor abiotik yang mempengaruhi pertumbuhan dan kelangsungan hidup kepiting adalah pH. Media pH optimum akan memberikan dampak maksimum pada kepiting bakau karena terkait dengan proses osmoregulasi. Penelitian ini bertujuan untuk menguji pengaruh pH pada tingkat kelangsungan hidup (SR) dan laju pertumbuhan spesifik (SGR) kepiting mangrove Scylla serrata melalui reaksi kondisi fisiologis. Penelitian ini terdiri atas perlakuan dengan media pH 5 (A), sedang pH 6 (B), sedang pH 7 (C), dan menengah pH 8 (D). Pemeliharaan kepiting di pH yang berbeda memberikan pengaruh yang signifikan (P<0,05) pada tingkat kelangsungan hidup kepiting. Perlakuan pH juga memberikan efek yang signifikan (P<0,05) pada SGR dari kepiting. Rendahnya tingkat stres kepiting pada pH 7 digambarkan oleh nilai total hemosit tinggi dan beban osmotik tinggi sehingga pH 7 adalah kondisi optimum untuk kepiting.
Kata kunci: pH, kelangsungan hidup, laju pertumbuhan spesifik, kepiting mangrove
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