气候变化领域集成服务门户(CCPortal): Influence of temperature variability on the feeding behavior and blood consumption of Triatoma infestans (Hemiptera: Reduviidae)

CCPortal

DOI	10.1093/jme/tjae034
	Influence of temperature variability on the feeding behavior and blood consumption of Triatoma infestans (Hemiptera: Reduviidae)
	Alvarez-Duhart, Barbara; Cavieres, Grisel; Gonzalez, Avia; Cattan, Pedro E.; Bozinovic, Francisco; Clavijo-Baquet, Sabrina
发表日期	2024
ISSN	0022-2585
EISSN	1938-2928
英文摘要	The transmission and incidence of vector-borne diseases rely on vector distribution and life history traits such as survival, fecundity, and feeding. Since arthropod disease vectors are ectotherms, these vital rates are strongly influenced by temperature. Chagas disease is a neglected tropical disease caused by the protozoan parasite, Trypanosoma cruzi. This parasite is transmitted when the feces of the infected triatomine enter the bloodstream of the host. One of the most important vector-species of this disease in the Southern Cone region of South America is Triatoma infestans. In this study, we evaluated the role of constant and variable environmental temperature on the feeding behavior of T. infestans. Fifth-instar nymphs were acclimatized to 4 thermal treatments comprising 2 temperatures (27 degrees C and 18 degrees C) with and without diurnal thermal variability (27 +/- 5 degrees C and 18 +/- 5 degrees C). Individuals were fed weekly for 7 wk to quantify their feeding. Our results showed lower feeding frequency in nymphs acclimatized to cold temperature compared to those from warmer temperature treatments. However, treatments with thermal variability presented a nonlinear effect on feeding, with an increased feeding rate in the cold, variable treatment and a decreased feeding rate in the warm, variable treatment. Individuals maintained under cold treatments, the variable temperature exhibited a higher feeding rate and the lowest amount of ingested blood among all treatments. Thus, natural diurnal temperature variation cannot be ignored if we are to make more accurate T. cruzi transmission risk predictions now and in the future.
英文关键词	vector-borne disease; temperature; feeding frequency; Chagas disease
语种	英语
WOS研究方向	Entomology ; Veterinary Sciences
WOS类目	Entomology ; Veterinary Sciences
WOS记录号	WOS:001181386700001
来源期刊	JOURNAL OF MEDICAL ENTOMOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300820
作者单位	Universidad de Chile; Universidad de Concepcion; Pontificia Universidad Catolica de Chile; Universidad de la Republica, Uruguay
推荐引用方式 GB/T 7714	Alvarez-Duhart, Barbara,Cavieres, Grisel,Gonzalez, Avia,et al. Influence of temperature variability on the feeding behavior and blood consumption of Triatoma infestans (Hemiptera: Reduviidae)[J],2024.
APA	Alvarez-Duhart, Barbara,Cavieres, Grisel,Gonzalez, Avia,Cattan, Pedro E.,Bozinovic, Francisco,&Clavijo-Baquet, Sabrina.(2024).Influence of temperature variability on the feeding behavior and blood consumption of Triatoma infestans (Hemiptera: Reduviidae).JOURNAL OF MEDICAL ENTOMOLOGY.
MLA	Alvarez-Duhart, Barbara,et al."Influence of temperature variability on the feeding behavior and blood consumption of Triatoma infestans (Hemiptera: Reduviidae)".JOURNAL OF MEDICAL ENTOMOLOGY (2024).