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Index Category
Num Date Index Chg. Chg. %
1 2015-01-11 40.00 0.00 0.00%
2 2015-01-04 40.00 0.00 0.00%
3 2014-12-28 40.00 0.00 0.00%
4 2014-12-21 40.00 0.00 0.00%
5 2014-12-14 40.00 0.00 0.00%
6 2014-12-07 40.00 0.00 0.00%
7 2014-11-30 40.00 0.00 0.00%
8 2014-11-23 40.00 0.00 0.00%
9 2014-11-16 40.00 0.00 0.00%
10 2014-11-09 40.00 0.22 0.55%

特徴

産地:Portunus trituberculatus, the Japanese Swimming Crab, gazami crab, Japanese blue crab or horse crab, is the most widely fished species of crab in the world. It is found off the coasts of East Asia and is closely related to Portunus pelagicus. It is the world's most heavily fished crab species, with over 300,000 tonnes being caught annually, 98% of it off the coast of China. The natural distribution extends from the Indian Ocean to the western Pacific Ocean.
特徴:Carapace very broad (breadth just over 2-2 1/3 times length); surface finely granulated; usually with recognizable mesogastric, epibranchial, and indistinct metagastric ridges, cardiac and mesobranchial ridges with low granular eminences; front with 2 acute teeth; antero-lateral borders with 9 teeth, last one very large and projecting straight out laterally; postero-lateral junction rounded. Cheliped merus with postero-distal border spinous, anterior border with 3-4 (usually 4) sharp spines; carpus with inner and outer spines; lower surface of palm smooth.
Posterior border of swimming leg without spines or spinules. (Türkay 1995)
Postero-lateral junction of carapace rounded; antero-external angle of merus of third maxilliped not produced laterally; 2 frontal lobes; carapace very broad, breadth almost twice length, covered with fine granules. (Davie 1999)