不同孵化湿度下的乌龟卵孵化成功率及新生幼体特征  

Egg survival and hatchling traits of the Chinese three-keeled pond turtle Chinemys reevesii incubated in different hydric environments

作　　者：杜卫国[1] 郑荣泉[2] 

机构地区：[1]杭州师范学院生命科学学院,杭州310036 [2]浙江师范大学环境和生命科学学院,金华321004

出　　处：《动物学报》2004年第1期133-136,共4页ACTA ZOOLOGICA SINICA

基　　金：杭州市新世纪人才基金资助~~

摘　　要：A total of 51 Chinese three-keeled pond turtle Chinemys reevesii egg s were incubated on wet and dry substrates (water potentials of -12 kPa and -3 00 kPa, respectively) at 30 ℃ to assess the influence of the hydric environment s on egg survival and hatchling traits. Eggs incubated in the dry condition lost weight, whereas those incubated in the wet condition did not. The hydric enviro nments did not affect incubation lengths (60 3 vs 60 7 days) as well as ha tching successes (69 2% vs 88 0%). Except for wet body mass and carapace width, which were larger for hatchlings from the -12 kPa treatment than from the -300 kPa tr eatment, the hydric environments did not affect most hatchling traits. These una ffected traits included dry body mass, carapace length, tail length, limb length , hatchling components (carcass, residual yolk and fat bodies), swimming perform ance and critical thermal minimum. In conclusion, within the water potential of -12 to -300 kPa, hydric environments have little effect on embryonic developme nt and hatchling traits in Chinese three-keeled pond turtles .A total of 51 Chinese three-keeled pond turtle Chinemys reevesii egg s were incubated on wet and dry substrates (water potentials of -12 kPa and -3 00 kPa, respectively) at 30 ℃ to assess the influence of the hydric environment s on egg survival and hatchling traits. Eggs incubated in the dry condition lost weight, whereas those incubated in the wet condition did not. The hydric enviro nments did not affect incubation lengths (60 3 vs 60 7 days) as well as ha tching successes (69 2% vs 88 0%). Except for wet body mass and carapace width, which were larger for hatchlings from the -12 kPa treatment than from the -300 kPa tr eatment, the hydric environments did not affect most hatchling traits. These una ffected traits included dry body mass, carapace length, tail length, limb length , hatchling components (carcass, residual yolk and fat bodies), swimming perform ance and critical thermal minimum. In conclusion, within the water potential of -12 to -300 kPa, hydric environments have little effect on embryonic developme nt and hatchling traits in Chinese three-keeled pond turtles .

关 键 词：乌龟 湿度 孵化 卵 幼体 表型特征 

分 类 号：Q954[生物学—动物学]