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Molecular Characterization and Gene Expression Profiling ... - CUSAT

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Chapter 1<br />

the giant tiger shrimp (Penaeus monodon), which is internationally known as<br />

tiger shrimp, has been <strong>and</strong> continues to be the leading cultured species. P.<br />

monodon is also the largest (maximum length 363 millimeters) <strong>and</strong> fastest<br />

growing of the farmed shrimp species <strong>and</strong> accounts for more than half of the<br />

total shrimp aquaculture output. In India, other than P. monodon, species<br />

such as Fenneropenaeus indicus (Indian white shrimp), P. penicillatus (like<br />

white shrimp), P. semisulcatus (green tiger shrimp) <strong>and</strong> P. merguiensis<br />

(banana shrimp) are also farmed. However, the two shrimp species – P.<br />

monodon <strong>and</strong> F. indicus form the mainstay of shrimp aquaculture in the<br />

country. In other parts of the world, L. vannamei is the dominant species in<br />

South American countries <strong>and</strong> F. chinensis is the most popular farmed species<br />

in China. Most of the south <strong>and</strong> south-east Asian countries farm only P.<br />

monodon. Kuruma shrimp (Marsupenaeus japonicus), native to the Indian<br />

Ocean <strong>and</strong> the South-eastern Pacific Ocean is commonly farmed in Japan <strong>and</strong><br />

Australia (FAO, 2002) (Fig. 1.1).<br />

Fig. 1.1. Relative importance of penaeid shrimp species to global aquaculture<br />

production. (Adapted from Rosenberry, 1999)<br />

1.2.1 Penaeus monodon (Black tiger shrimp)<br />

Named for its huge size <strong>and</strong> b<strong>and</strong>ed tail, the black tiger shrimp is one<br />

of the most common penaeid shrimp species currently being cultured in the<br />

world <strong>and</strong> the primary species farmed in Asia (excluding China <strong>and</strong> Japan).<br />

<strong>Molecular</strong> <strong>Characterization</strong> <strong>and</strong> <strong>Gene</strong> <strong>Expression</strong> <strong>Profiling</strong> of Antimicrobial Peptides in Penaeid Shrimps<br />

3

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