Laboratory observations on Todarodes pacificus (Cephalopoda: Ommastrephidae) egg masses
Laboratory observations on Todarodes pacificus (Cephalopoda: Ommastrephidae) egg masses
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太平洋Todarodes pacificus（头足类：Ommastrephidae）卵块的实验室观察
DOI：
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发表时间：
1996
影响因子：
0.5
通讯作者：
Y. Sakurai
中科院分区：
文献类型：
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作者：
J. Bower;Y. Sakurai
描述了两种大腹鱿鱼的卵群（Steenstrup, 1880）。从日本北海道南部的近海水域收集了未成熟的鱿鱼，并将其饲养在一个环形水箱中，在那里它们成熟，交配和产卵。两种凝胶团块都是球形的，几乎是中性浮力的。较大的一个直径为80厘米，含有大约20万个鸡蛋。卵团的表层有效地防止了甲壳类动物、原生动物和细菌的侵扰。在18-19°C的环境下，幼虫在4-6天后孵化，并积极游动，许多个体在水面上游动。两个团块在孵化后不久就解体了。幼虫在孵化后大约6-7天死亡，可能是由于饥饿。
Two egg masses of the ommastrephid squid Todarodes pacific us (Steenstrup, 1880) are described. Immature squid were collected from inshore waters of southern Hokkaido, Japan, and maintained in a raceway tank where they matured, mated, and spawned. Both gelatinous masses were spherical and nearly neutrally buoyant. The larger mass measured 80 cm in diameter and contained approximately 200,000 eggs. The egg-mass surface layer effectively prevented crustaceans, protozoans, and bacteria from infesting the masses. Paralarvae hatched after 4-6 days at 18-19°C and actively swam at once, with many individuals swimming at the surface. Both masses disintegrated soon after hatching. Paralarvae died approximately 6-7 days after hatching, presumably due to starvation.