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首页> 外文期刊>Aquaculture International >Yield characteristics and morphometric relationships of giant freshwater prawn, Macrobrachium rosenbergii (de Man, 1879)
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Yield characteristics and morphometric relationships of giant freshwater prawn, Macrobrachium rosenbergii (de Man, 1879)

机译：巨型淡水虾罗氏沼虾的产量特征和形态计量关系（德曼，1879年）

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摘要

Meat yield of 233 individuals of giant freshwater prawn, Macrobrachium rosenbergii (de Man, 1879), and their morphometric relationships were examined. Morphometric parameters of different length and weight measurements were recorded for both the sexes separately and subjected to analysis. The meat yield of prawns was size and sex dependent with females showing significantly greater (P < 0.05) tail meat yield than males. The tail meat as a body weight percentage ranges from 26.12 to 40.75 and 32.97 to 42.11 in males and females, respectively. Much of the differences in yield are related to the size and weight of the head and claws. The head weight of males was observed to be higher compared to females in all the size classes. Regression slopes of total length versus body weight and total length versus head weight were significantly higher than critical isometric value indicating high positive allometric growth in both the sexes, with males showing significantly higher (P < 0.05) slope than females. The relationship parameters of total length versus tail weight and total length versus tail meat showed a positive allometric growth in females, whereas it is isometry and negative allometry in males. The morphometric relationship of tail length versus all weight measurements showed positive allometry and negative allometry in females and males, respectively.
机译：检查了233个淡水对虾罗氏沼虾（de Man，1879）的肉产量，以及它们的形态计量关系。分别记录了男女不同身高和体重的形态测量参数，并进行了分析。对虾的肉产量与大小和性别有关，雌鱼的尾肉产量明显高于雄鱼（P <0.05）。在男性和女性中，尾肉占体重的百分比分别为26.12至40.75和32.97至42.11。产量的许多差异与头和爪的大小和重量有关。在所有体型上，男性的头重均高于女性。总长度与体重以及总长度与头部重量的回归斜率显着高于临界等轴测值，表明性别均具有较高的正等速增长，而男性的斜率则显着高于女性（P <0.05）。女性的总长度与尾巴重量以及总长度与尾肉之间的关系参数显示出女性的正等长增长，而男性的等长和负等长增长。尾巴长度与所有重量测量值之间的形态计量关系分别在雌性和雄性中显示出正向异性和负向异性。

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