10.5061/DRYAD.39QF1
Urbanelli, Sandra
Sapienza University of Rome
Porretta, Daniele
Tuscia University
Mastrantonio, Valentina
Sapienza University of Rome
Bellini, Romeo
University of Florence
Pieraccini, Giuseppe
University of Florence
Romoli, Riccardo
University of Florence
Crasta, Graziano
Sapienza University of Rome
Nascetti, Giuseppe
Tuscia University
Data from: Hybridization, natural selection and evolution of reproductive
isolation: a 25-years survey of an artificial sympatric area between two
mosquito sibling species of the Aedes mariae complex
Dryad
dataset
2014
Aedes mariae (Diptera: Culicidae)
Aedes zammitii (Diptera: Culicidae)
maladaptive hybridization
reinforcing natural selection
translocation experiments
Longitudinal studies
pre-mating isolation mechanisms
2014-06-30T14:28:15Z
2014-06-30T14:28:15Z
en
https://doi.org/10.1111/evo.12490
154613 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Natural selection can act against maladaptive hybridization between
co-occurring divergent populations leading to evolution of reproductive
isolation among them. A critical unanswered question about this process
that provides a basis for the theory of speciation by reinforcement, is
whether natural selection can cause hybridization rates to evolve to zero.
Here we investigated this issue in two sibling mosquitoes species, Aedes
mariae and Ae. zammitii, that show post-mating reproductive isolation (F1
males sterile) and partial pre-mating isolation (different height of
mating swarms) that could be reinforced by natural selection against
hybridization. In 1986, we created an artificial sympatric area between
the two species and sampled about 20,000 individuals over the following 25
years. Between 1986 to 2011, the composition of mating swarms and the
hybridization rate between the two species were investigated across time
in the sympatric area. Our results showed that Ae. mariae and Ae. zammitii
have not completed reproductive isolation since their first contact in the
artificial sympatric area. We have discussed the relative role of factors
such as time of contact, gene flow, strength of natural selection, and
biological mechanisms causing prezygotic isolation to explain the observed
results.
Simulated multilocus genotypes of Aedes mariae and Aedes zammitiiSimulated
multilocus genotypes of Aedes mariae and Aedes zammitii for six allozymic
loci. From multilocus genotypes of 100 individuals of Ae. mariae from
Circeo and Scauri populations and 100 individuals of Ae. zammitii from
Peschici and Baia dei Campi populations sampled in 1985, we simulated 1000
individuals of each of five genotypic class (parental Ae. mariae and Ae.
zammitti, F1, F2 and first-generation backcrosses) using the software
hybridlab version 1.0. z0s = Ae. zammitii from Peschici and Baia dei Campi
populations; z1s = Ae. mariae from Circeo and Scauri populations.simulated
data_Aedes mariae_Aedes zammitii.dat
Italy