温度对黄缘闭壳龟受精卵孵化的影响  

Effect of temperature on hatching of fertilized eggs of Cuora flavomarginata

作　　者：王录生 WANG Lusheng(Jinzhai County Agricultural Technology Extension and Service Center,Jinzhai 237300,Anhui China)

机构地区：[1]金寨县农业技术推广服务中心,安徽金寨237300

出　　处：《黑龙江水产》2024年第1期39-42,共4页Northern Chinese Fisheries

摘　　要：为了探讨温度对黄缘闭壳龟(Cuora flavomarginata)受精卵孵化的影响,挑选84个大小均一、蛋黄下沉、有精斑龟卵,随机分成4组,每组21个,分3个平行,每个平行7个。每个平行小组的龟卵在同一个孵化箱中孵化。4个小组分别对应4个温度梯度。处理1组的孵化温度为(24±0.5)℃,处理2组的孵化温度为(26±0.5)℃,处理3组的孵化温度为(28±0.5)℃,处理4组的孵化温度为(30±0.5)℃。孵化结束后计算孵化率、称量体重量。结果显示,孵化温度为(28±0.5)℃组的孵化率最高,为95.24%;其次为(30±0.5)℃组,孵化率为85.71%;孵化温度为(24±0.5)℃组的孵化率最低,为28.57%。通过对初孵幼龟体质量进行称量,发现孵化温度对初孵幼龟体质量影响显著,以(28±0.5)℃的处理3组初孵幼龟体质量最重,显著地高于(24±0.5)℃的处理1组、(26±0.5)℃的处理2组(P<0.05),但是和孵化温度为(30±0.5)℃的处理4组相比差异不显著(P>0.05)。幼龟孵出30周后体质量以(28±0.5)℃的处理3组最高,与(30±0.5)℃的处理4组相比差异不显著(P>0.05),显著地高于(26±0.5)℃的处理2组(P<0.05),极显著地高于(24±0.5)℃的处理1组(P<0.01)。由于受到孵化温度的影响,(24±0.5)℃的处理1组和(26±0.5)℃的处理2组初始孵化体重较轻,所以8周~30周的体质量增加率显著地高于(28±0.5)℃的处理3组和(30±0.5)℃的处理4组(P<0.05)。但是从幼龟的孵出率和孵出8周、30周的体质量来看,以(28±0.5)℃的处理3组孵化黄缘闭壳龟的孵化效果最好。In order to investigate the effect of temperature on the hatching of Cuora flavomarginata,84 eggs of uniform size with sunken yolks and spermatophores were selected and randomly divided into 4 groups of 21 eggs each.They were divided into 3 parallels of 7 each.Turtle eggs from each parallel group were incubated in the same incubator,and each of the four groups was incubated at four temperature gradients.The incubation temperature was(24±0.5)℃for treatment group 1,(26±0.5)℃for treatment group 2,(28±0.5)℃for treatment group 3,and(30±0.5)℃for treatment group 4.At the end of incubation,hatching rate was calculated and body weights were weighed.The results showed that the incubation temperature of(28±0.5)℃group had the highest hatching rate of 95.24%,followed by(30±0.5)℃group with 85.71%,and the incubation temperature of(24±0.5)℃group had the lowest hatching rate of 28.57%.By weighing the body mass of hatchlings,it was found that the incubation temperature had a significant effect on the body mass of hatchlings,and the body mass of hatchlings in the treatment 3 group at(28±0.5)℃was the heaviest,which was significantly higher than that in the treatment 1 group at(24±0.5)℃and the treatment 2 group at(26±0.5)℃(P<0.05),but the difference was not significant(P>0.05)when compared with that in the treatment 4 group at(30±0.5)℃.The body mass of hatchling turtles after 30 weeks of hatching was the highest in the treatment 3 group at(28±0.5)℃,with a non-significant difference compared to the treatment 4 group at(30±0.5)℃(P>0.05),significantly higher than that of the treatment 2 group at(26±0.5)℃(P<0.05),and highly significantly higher than that of the treatment 1 group at(24±0.5)℃(P<0.01).The rate of body mass gain from 8 weeks to 30 weeks was significantly higher(P<0.05)than that of the(28±0.5)℃treatment 1 group and(26±0.5)℃treatment 2 group(P<0.05)due to the effect of incubation temperature,which resulted in the initial lighter hatching weight of the(24±0.5)℃and(26±0.5)�

关 键 词：温度 黄缘闭壳龟(Cuora flavomarginata) 受精卵 孵化 

分 类 号：S966.5[农业科学—水产养殖]