My Fish

Terumbu karang merupakan rumah bagi ribuan hewan dan tumbuhan yang memiliki nilai ekonomis tinggi, berbagai jenis hewan laut mencari makan dan berlindung di ekosistem tersebut. Pada kondisi yang sangat maksimal, terumbu karang menyediakan ikan-ikan dan molusca hingga mencapai jumlah sekitar 10 – 30 ton/km2 per tahunnya (Hanggono, A., Bambang K., Suhud, Rasjid A., dan Murad S, 2001). Ekosistem ini merupakan sumber plasma nuftah bagi makhluk hidup baik di masa sekarang maupun di masa yang akan datang. Selain itu, terumbu karang merupakan laboratorium alam yang sangat unik untuk berbagai penelitian yang dapat mengungkapkan penemuan yang sangat berguna bagi kehidupan manusia. Keindahannya dapat menjadi sumber devisa pariwisata bagi pemerintah setempat, sehingga dapat menambah penghasilan manusia, terutama bagi masyarakat pesisir. Terumbu karang (coral reefs) merupakan ekosistem laut tropis yang terdapat di perairan dangkal yang jernih, hangat (lebih dari 22oC), memiliki kadar CaCO3 (Kal...

Vibriosis is one of the major disease problems in shellfish and finfish aquaculture. Vibriosis is a bacterial disease responsible for mortality of cultured shrimp worldwide (Lightner & Lewis, 1975; Adams, 1991; Lightner et al., 1992; Lavilla-Pitogo et al., 1996; Lavilla-Pitogo et al., 1998; Chen et al., 2000). Vibriosis is controlled by rigorous water management and sanitation to prevent the entry of vibrios in the culture water (Baticados, et al., 1990) and to reduce stress on the shrimps (Lightner, 1993). Good site selection, pond design and pond preparation are also important (Nash et al., 1992). An increase in daily water exchanges and a reduction in pond biomass by partial harvesting are recommended to reduce mortalities caused by vibriosis. Draining, drying and administering lime/dolomite to ponds following harvest is also recommended (Anderson et al., 1988). Luminescent vibriosis may be controlled in the hatchery by washing eggs with iodine (SparkDin) and formaldehyde and a...

In some areas pumping of groundwater and/or construction or modification of canal systems has resulted in saltwater intrusion into what were previously freshwater areas. Disturbance and release of acid from acid sulphate soils (common in mangrove areas) as a result of pond digging has also had negative impacts on resource productivity, including aquaculture yields. Excessive acidity is likely to reduce disease resistance. Overall, the rapid and over-concentrated development of aquaculture, and particularly coastal aquaculture, has resulted in declines in soil and water quality, increased disease incidence, and more rapid disease spread. This has directly and negatively impacted fish farmers themselves, in both inland and coastal environments. The knock-on effects of disease outbreaks are substantial for local communities and national economies. Some recent examples of the economic impacts are listed below: • The total negative economic impact of two shrimp viruses, white spot syndrome...