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在实验室条件下研究了极端温度对海刺猬的存活率、摄食率、生长以及组织器官等方面的影响。实验设置两个处理组温度为30°C和-2℃,对照组为自然水温(19~23℃),每组设置3个重复,每个重复60枚海刺猬,实验周期为56 d。结果表明:高温组海刺猬实验温度升到30℃后2 d内全部死亡,其平均摄食量(5.19±1.31 g·ind-1)极显著小于对照组(15.15±1.58 g·ind-1)(P<0.01);低温组和对照组之间海刺猬存活率差异不显著(P>0.05);但低温组海刺猬平均摄食量(0.18±0.04 g·ind-1)极显著小于对照组(10.90±0.33 g·ind-1)(P<0.01);56 d内低温组海刺猬个体湿重极显著小于对照组(P<0.01);低温组海刺猬口器湿重、壳湿重、性腺湿重、壳干重、口器指数、壳指数极显著小于对照组(P<0.01),性腺干重、口器干重显著小于对照组(P<0.05);但性腺指数与对照组无显著差别(P>0.05);低温组海刺猬最大承受压力极显著小于对照组(P<0.01);在实验室条件下,海刺猬(2~3 g·ind-1)无法长时间在高温环境(30℃)下存活,而能在低温环境(-2℃)下存活但其摄食、生长和性腺性状影响极显著。
Under laboratory conditions, the effects of extreme temperature on the survival rate, feeding rate, growth and tissue and organ of hedgehog were studied. The experiment set the temperature of the two treatment groups to be 30 ° C and -2 ° C, and the control group was the natural water temperature (19 to 23 ° C). Three replicates were set in each group, and 60 hedgehogs each were repeated with an experimental period of 56 days. The results showed that the average food intake (5.19 ± 1.31 g · ind-1) of sea hedgehog was significantly lower than that of the control group (15.15 ± 1.58 g · ind-1) (P <0.01). There was no significant difference in the survival rates of C. hedgehog between the low temperature group and the control group (P> 0.05). However, the average consumption of C. hedgehog in the low temperature group was significantly lower than that of the control group (0.18 ± 0.04 g · ind- ± 0.33 g · ind-1) (P <0.01). The wet weight of individuals of H. hedgehog in the low temperature group within 56 days was significantly lower than that in the control group (P <0.01) (P <0.01). Dry weight of gonads and mouthparts were significantly lower than those of control group (P <0.05). However, there was no significant difference between gonadal index and control group (P> 0.05). Under the laboratory conditions, sea hedgehog (2 ~ 3 g · ind-1) could not prolong the maximum stress in the high temperature environment (30 ℃) and survived in the low temperature environment (-2 ℃), but the effects of feeding, growth and gonadal traits were very significant.