Comparison of development and larval growth of four venerid clams
Comparison of development and larval growth of four venerid clams
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四种金蛤的发育及幼体生长比较
DOI：
10.1111/j.1749-7345.2005.tb00383.x
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Hur
中科院分区：
文献类型：
--
作者：
Y. Hur;J. Bae;S. Hur
采用实验室培养技术，比较了生活在朝鲜西部沿海潮间带的4种纹科鱼类，分别是菲律宾纹科鱼类、纹科鱼类、中华圆蝽和绿尾蝽的发育和幼虫形态。在87 μm的受精卵中，中华绒囊虫卵最大，而在53 μm的受精卵中，蛇形绒囊虫卵最小。d形幼虫最大，为135 μm，最小，为89 μm。菲律宾绒螯蟹和褐绒螯蟹的d形幼虫肩角对称，腹侧呈椭圆形，而蛇形绒螯蟹和中华绒螯蟹的肩角不对称，腹侧呈圆形。总的来说，所有种类的小叶蛾幼虫都呈黄色，但小叶蛾和小叶蛾幼虫的黄色更为明显。在早期d形幼虫期和幼虫幼虫期之间，lusonia和csinensis幼虫分别经过7和17 d。在幼虫早期，所有种属的株长均大于株高。然而，除了菲律宾螺（R. philippinarum）呈扁平形状外，所有物种的壳长和高后来都大致相同。这些结果表明，尽管这四种蛤在潮间带同时产卵，但其幼虫生长和外部形态的不同特征为自然产卵的幼虫鉴定提供了必要的证据。
The development and larval morphology of four venerid calms, Ruditapes philippinarum, Mactra veneriformis, Cyclina sinensis, and Meretrix lusoria, which cohabit the intertidal zone in western coastal Korea, were compared using laboratory culture techniques. At 87 μm, the fertilized eggs of C. sinensis and M. lusoria were the largest and at 53 μm, those of M. veneriformis were the smallest. D-shaped larvae of M. lusoriu were the largest and those of M. veneriformis were the smallest measuring at 135 μm and 89 μm, respectively. D-shaped larvae of R. philippinarum and M. lusoria had symmetrical shoulder angles and an elliptical ventral form, in contrast to the asymmetrical shoulder angles and round ventral forms of M. veneriformis and C. sinensis. In general, pediveliger larvae of all species in the study were yellow, but those of M. veneriforks and C sinenis were a more pronounced yellow. In between the early D-shaped and pediveliger stage, 7 and 17 d elapsed for M. lusonia and C. sinensis larvae, respectively. In the early larval stages for all species, the sheU length was longer than the height. However, shell length and height later became approximately the same size in all species except R. philippinarum, which exhibited a flat shape. These results indicate that for these four venerid clams, the different characteristics in larval growth and external morphology provide the evidence necessary for larval identification of natural seed production despite the fact that they spawn concurrently in the intertidal zone.