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温度和密度对雄性泽陆蛙静止代谢率的影响

秦建汉1,2,程碧霞1,2,谢海1,2,侯绍兵1,2,武正军1,2*   

  1. 1珍稀濒危动植物生态与环境保护教育部重点实验室,  广西桂林 541004;2广西珍稀濒危动物生态学重点实验室, 广西桂林 541004)
  • 出版日期:2018-12-10 发布日期:2018-12-10

Effects of temperature and individual density on resting metabolism rate of male Fejervarya multistriata.

QIN Jian-han1,2, CHENG Bi-xia1,2, XIE Hai1,2, HOU Shao-bing1,2, WU Zheng-jun1,2*   

  1. (1Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, Guangxi, China; 2Guangxi Key Laboratory of Rare and Endangered Animal Ecology, College of Life Science, Guangxi Normal University, Guilin 541004, Guangxi, China).
  • Online:2018-12-10 Published:2018-12-10

摘要: 为了研究环境温度和密度对雄性泽陆蛙(Fejervarya multistriata)静止代谢率的影响,本实验应用开路式动物呼吸测量仪,测定雄性泽陆蛙在不同环境温度(15、25、35 ℃)和密度(N=1、2、3、4、5、6、7、8、9、10)下的耗氧量,并由此计算出静止代谢率。结果表明:雄性泽陆蛙的体温随环境温度(F2,27=16.958,P<0.01)和密度(F2,27=4.871,P=0.028)升高而升高;环境温度为15 ℃和25 ℃时,雄性泽陆蛙静止代谢率与密度显著负相关,两者的回归曲线方程分别为(15 ℃:RMR15=-0.0078N+0.4001,R2=0.843,P<0.001; 25 ℃:RMR25=-0.0048N+0.9851, R2=0.941, P<0.001);35 ℃时,雄性泽陆蛙静止代谢率与密度显著正相关,回归曲线方程为(RMR35=0.0551N+1.35, R2=0.855, P<0.001)。研究表明,在温度较低时,雄性泽陆蛙可以通过群居来减少能量代谢,而在温度较高时,群居会加剧泽陆蛙的能量代谢,不利于泽陆蛙的生长。

关键词: 甘薯, 干旱胁迫, 内源激素, 产量, 外源植物激素

Abstract: To examine the effects of temperature and individual density on resting metabolism rate of male Fejervarya multistriata, with open circuit instrument of animal respiration, we measured oxygen consumption of male F. multistriata under different ambient temperatures (15, 25 and 35 ℃) and individual densities (from 1 to 10) and calculated the resting metabolic rate. The results showed that body temperature significantly increased with increasing ambient temperature (F2,27=16.958, P<0.01) and individual density (F2,27=4.871, P=0.028). Under ambient temperature of 15 ℃ and 25 ℃, there were significant negative correlations between resting metabolic rate and individual density, with regression equations (15 ℃: RMR15=-0.0078N+0.4001, R2=0.843, P<0.001) and (25 ℃: RMR25=-0.0048N+0.9851, R2=0.941, P<0.001) respectively. However, under 35 ℃, there was a significant positive correlation between resting metabolic rate and individual density. The regression equation was (RMR35=0.0551N+1.35, R2=0.855, P<0.001). Our results indicate that the males of F. multistriata can reduce energy metabolism through living in groups under low temperature. However, living in groups will increase energy metabolism of F. multistriata under high temperature, which is not conducive to the growth of F. multistriata.

Key words: drought stress, exogenous plant hormones, endogenous hormone, sweet potato, yield