【摘要】 报道了中国北部沿海马粪海胆、海刺猬、光棘球海胆三种主要海胆与引自日本的中间球海胆四种海胆之间的不同组合的杂交试验及其子代浮游幼体及幼海胆的早期生长发育。结果表明 ,采用生殖调控可使不同海胆达到同步繁殖 ,在 8～ 2 4℃下各种海胆杂交组合的受精率与亲本亲缘关系有关 ,同时受到双亲繁殖适宜温度的影响 ,受精率介于 0～ 6 9.6 %之间 ,均低于自交组。以马粪海胆和海刺猬为亲本的正反交、以马粪海胆和中间球海胆为亲本的正反交以及马粪海胆 (♀ )×光棘球海胆 (♂ )各组杂交胚胎均可发育至四腕幼虫 ,但畸形率较高 ,浮游时间比自交组延长 3～ 1 0d ,在其中的 3个杂交组得到了幼海胆 ,经过 1 4个月的室内培育 ,杂交组成活率低于自交组 ,壳直径达 2 .5 9～ 2 .88cm更多还原

【Abstract】 Sea urchins Hemicentrotus pulcherrimus, Glyptocidaris crenularis, Strongylocentrotus nudus and S. intermedius are the most important roe source that export to Japan, S. nudus, S. intermedius and H. pulcherrimus have been cultured and released in north area of China Yellow Sea.This paper deals with the probability of their interspecific hybridization. And their hybrid larvae and juvenile characters were also reported. The results show that water temperature control can make the four sea urchin spawning simultaneously. The percentage of fertilization in crossing groups was 0-69.6% and it was affected by consanguinity relationship of their native stocks and the spawning proper water temperatures of their native stocks. The larvae of H. pulcherrimus×G.crenularis, G.crenularis× H. pulcherrimus, H. pulcherrimus×S. intermedius, S. intermedius×H. pulcherrimus and H. pulcherrimus×S. nudus can grow to four leg larvae, but the abnormal rate was higher, and the development time of float larvae was 3-10 days longer than that of their native stock offsprings. After 14 months reared indoor, three hybrid juvenile sea urchins were carried out and their test diameter was 2.59-2.88 cm.更多还原