Effect of sex and development stage on the supercooling point of cat flea Ctenocephalides felis felis (Siphonaptera: Pulicidae)

Chines Journal of Vector Biology and Control ›› 2010, Vol. 21 ›› Issue (6): 531-533.

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Effect of sex and development stage on the supercooling point of cat flea Ctenocephalides felis felis (Siphonaptera: Pulicidae)

LI Fen^1,2, MENG Feng-xia¹, LIN Jie¹

1 Department of Vector Biology and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China;
2 Key Laboratory of Biological Resources and Genetic Engineering, College of Life Sciences and Technology, Xinjiang University, Urumqi 830046, Xinjiang Uygur Autonomous Region, China

Received:2010-09-01 Online:2010-12-20 Published:2010-12-20
Supported by:
Supported by the National Natural Science Foundation of China (No. 30771874 )

猫栉首蚤不同性别和不同虫态的过冷却点测定

李芬^1,2, 孟凤霞¹, 林杰¹

1 中国疾病预防控制中心传染病预防控制所媒介生物控制室(北京 102206);
2 新疆大学生命科学与技术学院新疆生物资源基因工程重点实验室(乌鲁木齐 830046)

通讯作者: 孟凤霞， Email: mengfengxia@icdc.cn
作者简介:李芬(1985-)，女，硕士研究生，从事蚤类生物学研究。
基金资助:
国家自然科学基金(30771874)

Abstract

Abstract:

Objective To provide evidence for cat flea Ctenocephalides felis felis distribution, overwintering pattern analysis, and further to provide evidence for cat flea and cat flea borne diseases prevention and control, comparison studies of supercooling point (SCP) of adlits, and larvae of cat flea laboratory population were carried out. Methods Thermocouple and digital thermometer were used to determine SCP and freezing point (Ep) of the male and female adults and the later third instar larvae of cat flea laboratory population, and then we analyze the cold tolerance ability of cat flea at the different developmental stages and different gender. Results It was showed that the average temperature of the SCPs of female and male adults were (-18.24±0.26)℃ and (-18.45±0.26)℃ respectively in the starvation conditions, with no significant difference between them found. The average temperature of the EPs were (-15.46±0.30)℃ and (-15.19±0.31)℃ in female and male adults, respectively, there was also no significant difference; while the average temperarure of the SCP in the later third instar larvae was (-8.73±0.40)℃, Ep temperature was (-6.63±0.37)℃, both of them were significantly higher than the supercooling points and freezing points of the male and female adults. Conclusion Statitistically there is no difference in the cold tolerance between male and female adult cat fleas. Larvae is less able to tolerant cold temperature than the adults do, and therefore in northern China, it’s more likely for adults overwintering.

Key words: Ctenocephalides felis felis, Supercooling point, Cold-tolerance, Freezing

摘要：

目的比较研究猫栉首蚤不同性别成虫和幼虫的过冷却点，旨在分析其分布及越冬规律，进而为猫栉首蚤及其相关传染病的预防控制与相关研究提供依据。方法采用热电偶和数字温度表，测定猫栉首蚤实验室种群雌雄成虫和3龄老熟幼虫的过冷却点与结冰点，分析其不同发育阶段和不同性别的抗寒性差异。结果在饥饿状态下，猫栉首蚤雌性成虫与雄性成虫的平均过冷却点温度分别为(-18.24±0.26)℃和(-18.45±0.26)℃，二者差异无统计学意义；雌性成虫与雄性成虫的结冰点温度分别为(-15.46±0.30)℃和(-15.19±0.31)℃，二者差异亦无统计学意义；而3龄老熟幼虫的平均过冷却点温度为(-8.73±0.40)℃，结冰点温度为(-6.63±0.37)℃，都分别显著高于猫栉首蚤雌雄成虫的过冷却点和结冰点。结论猫栉首蚤的成虫抗寒性差异无统计学意义；与成虫相比，幼虫不耐寒冷，因此在我国北方较寒冷的区域，其以成虫越冬的可能性较大。

关键词: 猫栉首蚤, 过冷却点, 抗寒性, 结冰点

CLC Number:

R384.3

LI Fen, MENG Feng-xia, LIN Jie. Effect of sex and development stage on the supercooling point of cat flea Ctenocephalides felis felis (Siphonaptera: Pulicidae)[J]. Chines Journal of Vector Biology and Control, 2010, 21(6): 531-533.

李芬, 孟凤霞, 林杰. 猫栉首蚤不同性别和不同虫态的过冷却点测定[J]. 中国媒介生物学及控制杂志, 2010, 21(6): 531-533.

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Effect of sex and development stage on the supercooling point of cat flea Ctenocephalides felis felis (Siphonaptera: Pulicidae)

猫栉首蚤不同性别和不同虫态的过冷却点测定

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