温度对不同大小墨西哥湾扇贝生长的影响  

Effect of temperature on growth of Argopecten irradians concentricus of various sizes

作　　者：刘志刚[1] 王辉[1] 栗志民[1] 郑云龙 

机构地区：[1]广东海洋大学水产学院,广东湛江524025 [2]湛江银浪海洋生物技术有限公司,广东湛江524022

出　　处：《热带海洋学报》2007年第5期47-52,共6页Journal of Tropical Oceanography

基　　金：广东省科技厅资助项目(2001C20825;2005B26001079)

摘　　要：在8—32℃实验室控温范围内以2℃为梯度,以壳高及体重增长作为观察指标,研究3个规格墨西哥湾扇贝Argopecten irradians concentricus的适宜、较适宜及最适宜生长温度。研究结果表明,小苗(壳高6.2mm,体重48.3mg)、中苗(壳高18.1mm,体重1191.1mg)、大苗(壳高30.7mm,体重5809.9mg)在8—32℃水温下均能生长,但在水温8及32℃,3种规格增长率均较低;适宜生长温度分别为小苗11.2—31.1℃、中苗9.8—31.8℃、大苗9.8—32.4℃;较适宜生长温度分别为小苗18.1—29.4℃、中苗18.5—29.4℃、大苗16.9—30.4℃;3种苗随规格增大,适温范围扩大(p<0.01);最适生长温度3种苗均为24—28.0℃,其范围向高温端漂移;在水温为8℃时,3种苗存活率均达到97.0%以上,水温在32℃时则小苗为47.0%、中苗为67.5%、大苗为76.0%,表现出3种苗对低温有更强的忍耐力,大苗对高温有更强的适应性。tricus of ： Suitable, relatively suitable and optimum growth temperatures of Argopecten irradians concenwith temp sizes w erature ere investigated under experimentally controlled gradient of 2℃） by tak results showed that th small seedlings （ ing she growth rates of shell temperature （ranging from 8℃ to 32℃, height and wet weight as measures. The 11 height 6.2mm, wet weight 48.3mg）, the middle seedlings （shell height 18. lmm, wet weight 1 191. 1mg）, and the large seedlings （shell height 30.7mm, wet weight 5 809.9mg） could all normally grow under water temperature of 8-32℃, but their daily growth rates were lower at 8℃ and 32℃. The suitable growth temperatures were 11.2-31.1℃ for the small seedlings, 9.8-31.8℃ for the middle seedlings, and 9.8-32.4℃ for the large seedlings, respectively. The relatively suitable temperatures were 18.1-29.4℃ for the small seedlings, 18.5-29.4℃for the middle seedlings, and 16.9-30.4℃ for the large seedlings, respectively. The temperature adaptability of seedlings of 3 sizes increased with size increasing （p〈0.01）. The optimum growth temperature was 24-28℃ for all 3 sizes, ranging upward. The survival rates of 3 sizes were all above 97.0% when water temperature was at 8℃, while the survival rats were 47.0% for the small seedlings, 67.5% for the middle seedlings, and 76.0% for the large seedlings respectively when water temperature was at 32℃, exhibiting that the seedlings of 3 sizes had a high adaptability to low temperature, and the large seedlings had a higher adaptability than the seedlings of the other 2 sizes. The results showed temperature superiority in the culture of Argopecten irradians concentricus in the Beibu Bay.

关 键 词：墨西哥湾扇贝Argopecten IRRADIANS concentricus 规格 生长 温度 

分 类 号：Q111.22[生物学—普通生物学]