How microclimatic variables and blood meal sources influence Rhodnius prolixus abundance and Trypanosoma cruzi infection in Attalea butyracea and Elaeis guineensis palms?

被引：5

作者：

Calderon, Johan M. ^{[1
]}

Erazo, Diana ^{[2
]}

Kieran, Troy J. ^{[3
]}

Gottdenker, Nicole L. ^{[4
]}

Leon, Cielo ^{[1
]}

Cordovez, Juan ^{[2
]}

Guhl, Felipe ^{[1
]}

Glenn, Travis C. ^{[3
]}

Gonzalez, Camila ^{[1
]}

机构：

[1] Univ Andes, Dept Ciencias Biol, Ctr Invest Microbiol & Parasitol Trop CIMPAT, Bogota 111711, Colombia

[2] Univ Andes, Dept Ingn Biomed, Grp Invest Biol Matemat & Computac BIOMAC, Bogota 111711, Colombia

[3] Univ Georgia, Coll Publ Hlth, Dept Environm Hlth Sci, Athens, GA 30602 USA

[4] Univ Georgia, Coll Vet Med, Dept Vet Pathol, Athens, GA 30602 USA

来源：

ACTA TROPICA | 2020年 / 212卷

关键词：

Chagas disease; Triatomines; Habitat selection; Vector ecology; Cleptohematophagy; Disease ecology; CHAGAS-DISEASE; HEMIPTERA REDUVIIDAE; NASUTUS STAL; RISK-FACTORS; TREES; INFESTATION; VECTOR; TRIATOMINAE; BUGS; TRANSMISSION;

D O I：

10.1016/j.actatropica.2020.105674

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

Chagas disease is a zoonosis that affects several million people and is caused by the parasite Trypanosoma cruzi, which is mainly transmitted through the feces of triatomine bugs. Within triatomines, several Rhodnius species have been found inhabiting palms, and certain factors such as palm species and location have been related to the abundance and T. cruzi infection of those insects in palms. In this study, the main goal was to determine if R. prolixus abundances and infection rates in Attalea butyracea and Elaeis guineensis palms are related to ecological factors such as palm species, crown microclimate, and available blood meal sources. Triatomine sampling was performed in two municipalities of Casanare, Colombia, specifically in the intersection of riparian forests and oil palm plantations. For R. prolixus abundance per palm, the predictors showing more relationship were palm species and blood meal species identified in the palm, and for T. cruzi infection per triatomine, they were palm species and nymphal stage. Palm microclimate was very similar in both palm species and did not show a relationship with triatomine abundance. Comparing palm species, A. butyracea showed more blood meal species, including more refractory host species, than E. guineensis, but lower T. cruzi infection rate and parasitaemia. Interestingly, non-arboreal blood meal species were frequently found in the analyzed nymphs, indicating that the blood source for R. prolixus in palms corresponded to all the fauna located in the surrounded landscape and not only in the palm. These results could expose a new ecological scenario to interpret the T. cruzi transmission in sylvatic environments.

引用

页数：11