TY - JOUR
T1 - Biological and genetic aspects of crosses between species of the genus Meccus (Hemiptera: Reduviidae Triatominae)
AU - Martínez-Ibarra, José Alejandro
AU - Grant-Guillén, Yunuen
AU - Ventura-Rodríguez, Luz Verónica
AU - Osorio-Pelayo, Paola Denisse
AU - Macías-Amezcua, Michael Dassaejv
AU - Meillón-Isáis, Karla
AU - Alejandre-Aguilar, Ricardo
AU - Rodríguez-Bataz, Elvia
AU - Nogueda-Torres, Benjamín
PY - 2011/5
Y1 - 2011/5
N2 - The degree of reproductive isolation between Meccus phyllosomus and the remaining five species of the genus Meccus, as well as between Meccus bassolsae and Meccus pallidipennis, Meccus longipennis and Meccus picturatus, 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 high in the vast majority of sets of crosses, with the exception of that between ♀M. phyllosomus and ♂Meccus mazzottii. In sets of crosses involving M. bassolsae specimens, no first-generation (F1) individuals were morphologically similar to M. bassolsae, but instead shared the morphology of the other parental species. A similar phenomenon was observed in most sets of crosses involving M. phyllosomus. These results indicated that different degrees of reproductive isolation exist among the species of Meccus involved in this study. The biological evidence obtained in this study does not support the proposal that M. bassolsae is a full species. It could indicate that, on the contrary, it should be considered a subspecies of a single polytypic species. The biological evidence does support the proposal that M. phyllosomus is a full species.
AB - The degree of reproductive isolation between Meccus phyllosomus and the remaining five species of the genus Meccus, as well as between Meccus bassolsae and Meccus pallidipennis, Meccus longipennis and Meccus picturatus, 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 high in the vast majority of sets of crosses, with the exception of that between ♀M. phyllosomus and ♂Meccus mazzottii. In sets of crosses involving M. bassolsae specimens, no first-generation (F1) individuals were morphologically similar to M. bassolsae, but instead shared the morphology of the other parental species. A similar phenomenon was observed in most sets of crosses involving M. phyllosomus. These results indicated that different degrees of reproductive isolation exist among the species of Meccus involved in this study. The biological evidence obtained in this study does not support the proposal that M. bassolsae is a full species. It could indicate that, on the contrary, it should be considered a subspecies of a single polytypic species. The biological evidence does support the proposal that M. phyllosomus is a full species.
KW - Hybrids
KW - Phyllosoma complex species
KW - Phylogenetic level
KW - Reproductive isolation
UR - http://www.scopus.com/inward/record.url?scp=79955974978&partnerID=8YFLogxK
U2 - 10.1590/S0074-02762011000300007
DO - 10.1590/S0074-02762011000300007
M3 - Artículo
C2 - 21655816
AN - SCOPUS:79955974978
SN - 0074-0276
VL - 106
SP - 293
EP - 300
JO - Memorias do Instituto Oswaldo Cruz
JF - Memorias do Instituto Oswaldo Cruz
IS - 3
ER -