New PDF release: Advances in shrimp aquaculture management

By Sascha W. Felix

ISBN-10: 9383048964

ISBN-13: 9789383048960

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Sergestidae). They can be easily distinguished by their long, bright orange antennae which have a prominent sharp bend in them. Post-larvae of shrimps have short, colourless antennae. In addition, these larvae do not have statocysts (in live animals these appear like small bright spots to the naked eye) on the tail (Mysidacea), and their eyes do not extend laterally at a 90o angle (Sergestidae). The uropods of Mysidacea are not spread fan-like as in shrimp, but are parallel, directed posterior.

A word of caution is needed concerning the drying of pond bottom in areas of high acidity levels. In pyrite soil, during the drying process, parameters are optimized and when the pond is filled with water acid is formed and pH of the water is lowered. This type of pond should be flushed thoroughly after drying. It is suggested that for lab-lab production in ponds with hard bottom, the soil should be tilled after drying. Tilling of soil helps largely in the mineralization of organic matter. However oxidization of acid sulfate soils may be harmful, particularly where fresh soil is exposed to the air.

F) Difficulties encountered in culturing this shrimp for more than 4 months without heavy mortalities. (iii) Penaeus semisulcatus Advantages (a) Artificial propagation of larvae is relatively easy. (b) Shrimp reaches a large size and brings a good price. Disadvantages (a) This species has not been successfully cultured to marketable size despite numerous attempts. (b) In ponds, growth is slow and mortality has been high. (c) It requires relatively high salinity water. (iv) Litopenaeus vannamei Advantages (a) They are highly tolerant to low temperature ranges.

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Advances in shrimp aquaculture management by Sascha W. Felix

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