Premium
Cryptic speciation in Triatoma sordida (Hemiptera: Reduviidae) from the Bolivian Chaco
Author(s) -
François Noireau,
Teresa de Jesús Molina Gutiérrez,
Mario Zegarra,
R. Flores,
Simone Frédérique Brenière,
L. Cardozo,
Jean Dujardin
Publication year - 1998
Publication title -
tropical medicine and international health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.056
H-Index - 114
eISSN - 1365-3156
pISSN - 1360-2276
DOI - 10.1046/j.1365-3156.1998.00219.x
Subject(s) - biology , panmixia , reduviidae , hemiptera , reproductive isolation , triatominae , hybrid zone , zoology , triatoma , genetic divergence , hybrid , species complex , ecology , genetic variation , genetic structure , population , phylogenetic tree , genetics , gene flow , genetic diversity , botany , demography , sociology , gene
Eight natural Bolivian populations of two closely related species of Triatominae, Triatoma sordida and T. guasayana , were analysed by multilocus enzyme electrophoresis at 20 loci. Both species were readily separated and no natural hybrid was observed. Among the silvatic sample of T. sordida , strong departure from panmixia within and between loci was detected in two sites of the Chaco, suggesting two reproductively separate populations easily recognized at Idh2 and Mdh2 loci. Genetic distance between them was in agreement with the hypothesis of distinct species. However, the detection of 3% of putative hybrids suggested a recent evolutionary divergence.