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Ongoing speciation within the A nastrepha fraterculus cryptic species complex: the case of the A ndean morphotype
Author(s) -
Devescovi Francisco,
Abraham Solana,
Roriz Alzira K.P.,
Nolazco Norma,
Castañeda Rosario,
Tadeo Eduardo,
Caceres Carlos,
Segura Diego F.,
Vera M. Teresa,
JoachimBravo Iara,
Canal Nelson,
Rull Juan
Publication year - 2014
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/eea.12219
Subject(s) - biology , species complex , reproductive isolation , genetic algorithm , tephritidae , anastrepha , mating , zoology , population , evolutionary biology , ecology , pest analysis , botany , genetics , gene , demography , sociology , phylogenetic tree
The A nastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) cryptic species complex is currently composed of seven taxonomically recognized morphotypes. Both, pre‐ and post‐zygotic isolation has been documented among four of these morphotypes, revealing that in fact they appear to be distinct biological entities. In order to progress in the full delimitation of species within the complex, we examined reproductive isolation between a C olombian population of the A ndean morphotype and populations belonging to four other morphotypes spanning from M exico to A rgentina. Flies from the A ndean morphotype exhibited strong pre‐zygotic mating isolation through temporal partitioning of mating activity. Post‐zygotic isolation was observed for crosses of males of all morphotypes and Andean morphotype females, yet most of the F1 hybrid ♂ × F1 hybrid ♀ self‐crosses showed normal levels of fertility, a finding suggesting a nuclear–cytoplasmic interaction according to previous studies. Overall, the A ndean morphotype within the complex also appears to be a distinct biological entity. We discuss the implications of these findings for the understanding of speciation mechanisms in the N eotropical genus A nastrepha .