Palaemonidae, order Decapoda, class Malacostraca. Large freshwater shrimp, reaching a body length of over 25cm, and the largest species in the Palaemonidae family. The upper edge of the rostrum has 11-13 teeth (2-3 on the cephalothorax), and 10-11 teeth on the lower edge. The second thoracic leg of the male is long and densely covered with spines, and the upper edge of the movable digits has soft hairs. The body is uniformly dull gray-green, but the second thoracic leg is tinged with blue. It inhabits the middle and lower reaches of large rivers from Taiwan through Southeast Asia to India. It is an important food species throughout its distribution range, and is especially cultivated on a large scale in Thailand. (→Crustacea, Decapoda, Arthropods, Malacostraca) Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
軟甲綱十脚目テナガエビ科 Palaemonidae。体長 25cm以上になる大型の淡水エビで,テナガエビ科の最大種。額角の上縁には 11~13歯(頭胸甲上に 2~3歯),下縁には 10~11歯がある。雄の第2胸脚は長大で,全面がとげで密に覆われ,また,可動指の上縁には軟毛がある。一様に地味な灰緑色であるが,第2胸脚は青色を帯びる。台湾から東南アジアを経てインドまで,大きな河川の中・下流域に生息する。分布域内の各地で重要な食用種となっており,特にタイでは大規模な養殖が行なわれている。(→甲殻類,十脚類,節足動物,軟甲類)
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