FISH CULTURE

fish disease: vibriosis in fish Cause: Vibrio alginolyticus, V. parahaemolyticus, V. vulnificus, V. ordalii, etc.. Bio - Ecology Pathogens • Bacteria in sea water ecosystems, and vibirosis still is a major problem for marine fish farming industry. • The case of vibriosis can occur throughout the year, but commonly associated with stress due to handling, high density or changes in extreme weather. • The death rate of fish at the larval stage up to the size fingerlings are attacked by the bacteria may reach 80-90%. Clinical Symptoms: • Weak, loss of appetite, swim in the water surface, and opaque color. • Inflammation of the rectum, gills, mouth, base of fin, followed by bleeding and blisters on the surface of the body, as well as open wounds. • In advanced infection of bleeding in the mouth and base of fins, excess mucus in the gills, dropsy, pale liver color. and eyes swollen. Diagnosis • Isolation and identification of bacteria through a bio-chemical tests Control: • Disinfection of a

Fish Disease: Edwarsiellosis Cause: Edwarsiella tarda Bio-Ecology Pathogens: • curved rod-shaped bacteria, gram-negative character moves with the aid of flagella, do not form spores or capsules, are facultative anaerobes, and able to produce H2S. • Found in freshwater environments and sea water, infecting several species of fish include: salmon, catfish, carp, tilapia. etc.. • Transmission of horizontally ie contact between host one with another host or through water. • Generally occurs at a relatively high water temperature (± 30 degrees Celsius) and high organic matter content. • The death rate depends on environmental conditions, in very poor conditions can lead to death by 50%. Clinical Symptoms: • In mild infections, revealing only minor injuries. • As the development of more advanced disease, purulent wound developed in the ribs and stomach muscles. • Pale, bloated stomach containing a yellowish liquid or redness, bleeding of the rectum and / or depressed into the anus, and eyes

Seaweed and Grouper, Mainstay Aquaculture Maluku Province Maluku provincial aquaculture production in 2009 reached 50,915 tons from mariculture, aquaculture and freshwater aquaculture. Seaweed, grouper, sea cucumbers and shrimp are aquaculture commodities Maluku province. In 2009, the four commodities, production amounted to 47,782.6 tons, 1810.7 tons, 522.4 tons and 166.3 tons. In addition, the Moluccas are also famous for pearl cultivation which have. When viewed under cultivation commodities then seen that the Moluccas potential for marine aquaculture development, especially for seaweed, grouper and oysters with pearls. It is the province of Maluku is potential for the development of the three commodities. Judging from the structure of the region, this province is an island province and the province is surrounded by a sea that is still awake. Province which is located at position 2? 30? 9? south latitude and 124? - 136? east longitude, the lurid sea borders in the north, the seas of