MEM INST OSWALDO CRUZ, RIO DE JANEIRO, 108(3) May 2013
PAGES: 352-358 DOI: 10.1590/0074-0276108032013014 Full paper
New structures for goat corrals to control peridomestic populations of Triatoma infestans (Hemiptera: Reduviidae) in the Gran Chaco of Argentina

David Eladio Gorla1,+, Luciana Abrahan1, María Laura Hernández1, Ximena Porcasi2, Hugo Américo Hrellac3, Hugo Carrizo4, Silvia Susana Catalá1

1Centro Regional de Investigaciones Científicas y Transferencia Tecnológica, Consejo Nacional de Investigaciones Científicas y Técnicas, Anillaco, La Rioja, Argentina
2Instituto Mario Gulich, Comisión Nacional de Actividades Espaciales, Falda del Carmen, Córdoba, Argentina
3Programa Chagas La Rioja, El Chacho, La Rioja, Argentina
4Instituto Nacional de Tecnología Agropecuaria, Chamical, La Rioja, Argentina

Abstract

Goat production is an important economic activity for rural communities in the Gran Chaco of Argentina. Goat corrals are important for the survival of peridomestic populations of Triatoma infestans. This study evaluated the impact of modifying the traditional structure of goat corrals on T. infestans populations and goat productivity in the region of Los Llanos (La Rioja). Thirty-nine experimental corrals were constructed and 57 traditional corrals were used as controls. We evaluated the infestations of the control and experimental corrals for five years following construction of the structures. The results showed that the new structures did not prevent the colonization, although it enhanced the detection of infestation at low densities of T. infestans. No significant difference was found in T. infestans population abundance between control and experimental corrals, probably because of the different detectability in the two types of structures, especially among the small nymphs. Although goat productivity average was higher in experimental than in control corrals, no significant difference was found because of high variability. The new structures can be used as a complement to promote the development of rural communities. Acceptability and adoption of the new corrals by the owners was high, as the enclosures offered better protection for the goats, increased growth of kids and facilitated herd handling.

Received 16 July 2012
Accepted 14 November 2012
Financial support: VIGIA Programme Ministry of Health of Argentina, TDR/UNICEF dependent/ UNDP/World Bank/WHO (A50681), Program Chagas La Rioja, INTA
+ Corresponding author: This e-mail address is being protected from spambots. You need JavaScript enabled to view it.

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