Abstract
Mangrove forest is tropical coastal vegetation that grow on muddy and sandy soils which affected by sea tides. One of important commercial species that live in mangrove ecosystem is the mud crab (Scylla serrata). Feed and water quality have been considered as critical components for supporting the growth both of weight and carapace length of this species. This study was conducted from January to February 2017 in the area of ??Ecotourism Kampung Kepiting, Bali. The influence of different natural feed such as Jerbung shrimp (Penaeus merguiensis), Mollusca, lemuru fish (Sardinella lemuru) and sea worms (Nereis sp.) on the growth performance of the mud crab were investigated. Water quality parameter data such as pH, DO, temperature, salinity and ammonium were also collected. The obtained data were analyzed by using variance analysis of Statistical Product and Service Solutions (SPSS) version 21. The result showed that the use of different types of feed have no effect on the length of carapace, but it has significantly influence on the specific growth rate of mud crab. Finally, different types of the given feeding were still resulted in the save range of water quality parameters for mud crab culture.
Highlights
Abstrak Mangrove merupakan vegetasi pesisir tropis yang tumbuh di tanah berlumpur dan berpasir dan terpengaruh oleh pasang surut air laut
sandy soils which affected by sea tides
of important commercial species that live in mangrove ecosystem is the mud crab
Summary
Hutan mangrove merupakan hutan yang tumbuh pada tanah berlumpur dan berpasir di daerah pantai dan muara sungai yang masih dipengaruhi oleh pasang surut laut. Herianto dan Subiandono (2012) menyatakan bahwa hutan mangrove berperan penting dalam pengembangan perikanan pantai. Hutan mangrove juga merupakan tempat fishing ground dan nursery ground bagi ikan dan kepiting Hutan mangrove mempunyai banyak manfaat dan salah satunya adalah sebagai ekowisata. Salah satu daerah ekowisata di Indonesia khususnya di Bali adalah ekowisata Kampung Kepiting yang terletak di Desa Tuban Kabupaten Badung (Felanza dkk., 2017). Protein, vitamin, mineral dan kaerbohidrat, jika kekurangan dari komponen tersebut maka akan menyebabkan terganggunya pertumbuhan kepiting bakau. Kisaran kebutuhan nutrisi untuk pertumbuhan kepiting bakau meliputi kisaran komposisi nutrisi dalam pakan kepiting yakni protein 30-40% Tujuan dari penelitian yang ini adalah untuk mengetahui pengaruh perbedaan jenis pakan terhadap pertumbuhan panjang karapas dan berat kepiting bakau (Scylla serrata)
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