TY - JOUR
T1 - Biological aspects of crosses between Triatoma recurva (Stål), 1868 (Hemiptera: Reduviidae: Triatominae) and other members of the Phyllosoma complex
AU - Martínez-Ibarra, José Alejandro
AU - Nogueda-Torres, Benjamín
AU - Licón-Trillo, Ángel
AU - Alejandre-Aguilar, Ricardo
AU - Salazar-Schettino, Paz María
AU - Vences-Blanco, Mauro Omar
N1 - Publisher Copyright:
© 2015 The Society for Vector Ecology.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - The degree of reproductive isolation between Triatoma recurva (Stål) (Hemiptera: Reduviidae: Triatominae) and the six species of the genus Meccus plus T. mexicana (Herrich-Schaeffer) (Hemiptera: Reduviidae) was examined. Fertility and the segregation of morphological characteristics were examined in two generations of hybrids from crosses between these species. The percentage of couples with offspring (fertile) was low in the vast majority of sets of crosses, with the exception of that between T. recurva female and M. phyllosomus male. In all studied sets of crosses, no first- (F1) or second- (F2) generation individuals were morphologically similar to T. recurva but instead shared the morphology of the other parental species. A similar phenomenon was observed in the three successful sets of backcrosses. These results indicated that different recorded levels of reproductive fitness among T. recurva and the species of Meccus involved in this study, plus T. mexicana, are present and that they were apparently influenced by differing mechanisms of isolation. The presence of some degree of reproductive compatibility between studied triatomines of distinct genera (Meccus spp. and Triatoma spp.) reinforces the need for generic revision of the tribe Triatomini.
AB - The degree of reproductive isolation between Triatoma recurva (Stål) (Hemiptera: Reduviidae: Triatominae) and the six species of the genus Meccus plus T. mexicana (Herrich-Schaeffer) (Hemiptera: Reduviidae) was examined. Fertility and the segregation of morphological characteristics were examined in two generations of hybrids from crosses between these species. The percentage of couples with offspring (fertile) was low in the vast majority of sets of crosses, with the exception of that between T. recurva female and M. phyllosomus male. In all studied sets of crosses, no first- (F1) or second- (F2) generation individuals were morphologically similar to T. recurva but instead shared the morphology of the other parental species. A similar phenomenon was observed in the three successful sets of backcrosses. These results indicated that different recorded levels of reproductive fitness among T. recurva and the species of Meccus involved in this study, plus T. mexicana, are present and that they were apparently influenced by differing mechanisms of isolation. The presence of some degree of reproductive compatibility between studied triatomines of distinct genera (Meccus spp. and Triatoma spp.) reinforces the need for generic revision of the tribe Triatomini.
KW - Chagas disease
KW - Hybridation
KW - Phyllosoma complex species
KW - Reproductive isolation
KW - Triatominae
UR - http://www.scopus.com/inward/record.url?scp=84930325476&partnerID=8YFLogxK
U2 - 10.1111/jvec.12139
DO - 10.1111/jvec.12139
M3 - Artículo
C2 - 26047191
AN - SCOPUS:84930325476
SN - 1081-1710
VL - 40
SP - 117
EP - 122
JO - Journal of Vector Ecology
JF - Journal of Vector Ecology
IS - 1
ER -