中文摘要：

采用自交、杂交和混交等不同的交配方式分别获得海湾扇贝“中科红”品种和普通养殖群体（对照组）的受精卵和幼虫，在20℃、23℃和26℃三个温度条件下培养，比较了两个群体在不同温度下的孵化率、10日龄幼虫存活率、1日龄和10日龄幼虫壳长。实验结果表明：“中科红”海湾扇贝自交系、杂交系和混交系的孵化率均大于对照组。自交系10日龄幼虫存活率显著高于对照组（P〈0．05），而杂交系和混交系的10日龄幼虫存活率小于对照组，但差异不显著（P〉0．05）。“中科红”海湾扇贝自交系（P〈0．05）和混交系幼虫的1日龄壳长大于对照组，杂交系的显著小于对照组（P〈0．05）。幼虫生长10日后，“中科红”海湾扇贝自交系、杂交系（P〈0．05）和混交系幼虫壳长均比对照组大，表现了较强的生长优势。温度对4个性状均有显著影响（P〈0．05）。“中科红”海湾扇贝对低温（20℃）和高温（26℃）的耐受性均高于对照组。

英文摘要：

Fertilized eggs and larvae of strain ＂Zhongkehong＂ bay scallop （Argopecten irradians） and common cultured population （control） were separately produced by self-fertilization, hybridization, and mixed mating. The three types of offspring were hatched and cultured at 20℃, 23℃ and 26℃ respectively. Hatching rate, ten-day larval survival, larval shell length on day 1 and day 10 were separately compared between two populations. Results showed that the hatching rate of fertilized eggs from ＂Zhongkehong＂ was higher than that from the common cultured population. Ten-day survival of self-fertilized larvae from ＂Zhongkehong＂ was significantly higher than that of the control （P〈0. 05）, while offspring from hybridization and mixed mating were insignificantly lower （P〉0. 05）. Shell length of self-fertilized larvae （P〈0. 05） and larvae of mixed mating from ＂Zhongkehong＂ were greater than their counterparts on day 1, but that of the hybrid larvae wa significantly smaller than the common cultured population （P〈0. 05）. At age of 10 days, shell length of larvae produced by self-fertilization, hybridization （P〈0. 05） and mixed mating from ＂Zhongkehong＂ exceeded that of the controls, indicating the growth advantage of ＂Zhongkehong＂ population. Temperature influenced the four larval traits significantly （P〈0.05） and ＂Zhongkehong＂ population was more tolerant to 20 ℃ and 26 ℃ than the control.