Evaluation of effective agents with larvae production in Khouzestan province shrimp hatcheries

Abstract

Shrimp hatcheries around the world continue to be heavily dependent of wild brood stock. This is a common threat for shrimp hatcheries in major shrimp farming countries. This dependence is inherently unstable and potentially dangerous, as the number of wild shrimp stocks around the world are tested to be positive for variety of dangerous infections increases (such as viruses). As the shrimp aquaculture industry has developed, the number of farms relying on seed hatcheries has increased too. On the other hand hatcheries are adopting technology to control the reproductiove process and produce ganeration after generation of shrimp without totally relying of wild populations. At present. There are hatcheries in khouzestan province, Abadan region. Which only 6 of them are active with production of 20 Milion postlarvae each hatchery. (of course hatchery in Bandar- e- Imam was onl active in 1380). The aim of our research project is to determine, the hatchery management, the fungal. Bacteria and parasite flora of shrimp larvae, water supply, water physico chemical factors and suitable use of dose chemicals. This study has been conducted since Farvardin1380 to Aban 1381 in Abadan hatcheries and in 1380 in Bandar-e- Imam. In this study, 7 genus and species bacteria such as, V.alginolyticus, V. splendidus, V. vulnificus, staphylococcous and A. hydrophila were diagnosed. Also, 10 genus and species fungi, trichothesium, Aspergilus, A. niger, cladosporium, mucor, fosarium, penicelium, Rhizopus and yeast were isolated. Among the received larve, zoothaminum and vorticella protozoa wer observed in Abadan hatchery. Water physico chemical Factors was terlatively normal, but heavy metal highly observed.