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M S Hamzah

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Author-ID : 273723

Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Library & Information Science

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THE RELATIONSHIP BETWEEN SEASON VARIATIONS AND DEPTH LEVEL ON THE GROWTH AND SURVIVAL RATE OF PEARL OYSTER SEEDS (Pinctada maxima) IN KAPONTORI BAY, BUTON ISLAND M S Hamzah
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 1 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

The pearl oyster (P. maxima) farming particularly in the Kapontori Bay, Buton Island waters and in other areas had complained for the mass mortality of pearl oysters saplings on the shell width between 3-4 cm. The mass mortality, was allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 27, 2007 to February 28, 2008. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. The variance analyses showed that depth levels affected the survival rates of the pearl oyster seeds significantly (P<0.01). Based on honest significantly difference test, it also showed that the percentage number of survival rate was found higher within the depth of 2m (93.33%). Based on the relationship analyses between length and weight of shell body in all depths indicated a similar growth pattern of minor allometric (b<3). The growth, survival rate, and environmental conditions based on depth levels on pearl oyster saplings were discussed in this paper. Keywords: Seasonal variation, survival rate, growth, pearl shell (P. maxima), depth level

EFFECTIVENESS OF REARING EQUIPMENT ON THE SURVIVAL AND GROWTH OF PEARL OYSTER (Pinctada maxima) SEED AT KODEK BAY, NORTH LOMBOK M S Hamzah
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

ABSTRACT Oyster seeds mass mortality is one of the problemes in pearl farming business. Extreme temperature changes may cause mortality in oyster seed within sehll size of 3-4 cm. Modification in rearing equipment is therefore needed to maintain oyster survival from the impact of seasonal temperature fluctuation. The aim of this research was to observe the effectiveness and effect of rearing equipment on the survival and growth of pearl oyster (Pinctada maxima) seed at Kodek Bay, North Lombok. This research conducted from March- November 2009 was the continuation from the previous observation (December 2008-February 2009). Percentage of pearl oyster seed survival reared in “tento” basket was 84%, while that in pocket was 53%. “Chi-square” test showed that pearl oyster survival rate was siginifcantly affected by using the two equipment influence within 95% confidence level with ratio of 1.00:1.06. The growth of shell width, thickness, and weight of oyster seed tended to be higher reared in a“tento” basket (having broader space for movement) than that reared in a pocket. Length-weight relationship for those treatments showed similar pattern with minor allometry (b<3). Keywords: “Tento”basket, pocket, survival, growth, pearl oyster seed, Pinctada maxima

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