Analysis of antenal sensilla patterns of Rhodnius prolixus from Colombia and Venezuela

Memórias do Instituto Oswaldo Cruz

Lyda Esteban²  Víctor Manuel Angulo²  M Dora Feliciangeli¹  Silvia Catalá¹ 

[1] ,Universidad Industrial de Santander Centro de Investigaciones en Enfermedades Tropicales Bucaramanga,Colombia

关键词: Chagas disease;    sensilla patterns;    Rhodnius prolixus;    Triatominae;    Colombia;    Venezuela;   

DOI  :  10.1590/S0074-02762005000800014

来源: SciELO

【 摘 要 】

Antennal sensilla patterns were used to analyze population variation of domestic Rhodnius prolixus from six departments and states representing three biogeographical regions of Colombia and Venezuela. Discriminant analysis of the patterns of mechanoreceptors and of three types of chemoreceptors on the pedicel and flagellar segments showed clear differentiation between R. prolixus populations east and west of the Andean Cordillera. The distribution of thick and thin-walled trichoids on the second flagellar segment also showed correlation with latitude, but this was not seen in the patterns of other sensilla. The results of the sensilla patterns appear to be reflecting biogeographic features or population isolation rather than characters associated with different habitats and lend support to the idea that domestic R. prolixus originated in the eastern region of the Andes.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License