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三疣梭子蟹抱卵体重与抱卵量、排幼量及Ⅰ期溞状幼体大小的关系

The relationship between pleopodal egg weight, number & body size of first zoeas and body weight of ovigerous female (Portunus trituberculatus)

投稿时间：2009-09-11 修订日期：2009-09-11

DOI：

中文关键词:三疣梭子蟹抱卵量排幼量幼体规格

英文关键词:Portunus trituberculatus Pleopodal egg number First zoeas number Larval size

基金项目:国家高技术研究发展计划（863计划）

作者	单位	E-mail
李玉全^*	青岛农业大学	jiangfangqian@sohu.com
高保全	农业部海洋渔业资源可持续利用重点开放实验室，中国水产科学研究院黄海水产研究所，山东青岛　２６６０７１
戴芳钰	农业部海洋渔业资源可持续利用重点开放实验室，中国水产科学研究院黄海水产研究所，山东青岛　２６６０７１

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中文摘要:

为分析三疣梭子蟹(Portunus trituberculatus)抱卵体重与抱卵量、排幼量及Ⅰ期溞状幼体大小的关系,以进一步了解其繁殖生物学特征,试验通过抱卵亲蟹单独培育、大小分组的方法,测定亲蟹抱卵体重、卵块重、排幼前后体重、排幼数量、Ⅰ期溞状幼体(Z1)的背棘长、额棘长、头胸甲宽、腹部长和尾节长等指标。结果表明,亲蟹抱卵体重与抱卵量间存在极显著正相关(P<0.01);亲蟹排幼前后体重与排幼量、幼体体重和每克幼体数量存在极显著或显著相关,与排幼数量相关性不显著(r=0.244,P>0.05);幼体体重和每克幼体数量与排幼数量无显著相关关系;Z1幼体的背棘长(F=96.222,P<0.01)、头胸甲宽(F=85.036,P<0.01)、腹部长(F=35.095,P<0.01)和尾节长(F=56.285,P<0.01)均表现为大规格组极显著高于小规格组。背棘长/额棘长和尾节长/腹部长处理间无显著差异;表明亲蟹越大,产卵量越多、Z1幼体的总重量越高、单个幼体的体重越大,每克幼体的数量却越少。亲蟹排幼数量的多少与幼体体重的大小无关(r=0.323,P>0.05）。亲蟹排幼前，体重在一定程度上影响Z1幼体的大小，但对其形态影响显著。

英文摘要:

The relationship between body weight of ovigerous female crab and pleopodal egg weight，number &body size of first zoeas(Z,)were analyzed. Several morphologic characters were detected，including body weight of ovigerous female，pleopodal egg weight, body weight before and after hatching，number and size of Z1，etc. The results showed that positive correlation(P<0.01)was found between ovigerous female body weight and pleopodal egg weight. Z1 total weight & body weight，number of per g of Z1 increased with before and after hatching of females body weight. Dorsal Spine(DSL, F=96.222,P<0.01)，carapace width(CW，F=85. 036 , P<0.01)，abdominal(AL，F=35. 095 , P<0.01)and pygidium(PL, F=56. 285 , P<0.01)of Z1 increased with body weight of females. No significant different were found on DSL/SFL(Spina frontalis length) and PL/AL. The results illuminated that larger size female should expect higher total weight and body weight of Z1 and fewer Z1 number per g. Total Z1 number was no significant relationship with Z1 body weight(r=0. 323，P>0.05).Before and after hatching of females body weight could decide Z1 body size to a certain extent，but did not influenced the shape of Z1.

李玉全,高保全,戴芳钰.2010.三疣梭子蟹抱卵体重与抱卵量、排幼量及Ⅰ期溞状幼体大小的关系[J].水生态学杂志,31(3):71-75.

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