10.5061/DRYAD.2BVQ83BTP
Nishimura, Taira
Kobe University
Terada, Karen
Kobe University
Xia, Tian
Kobe University
Takami, Yasuoki
0000-0002-6507-2115
Kobe University
Data for: Relationships between reproductive character displacement in
genital morphology and the population-level cost of interspecific mating:
Implications for the Templeton effect
Dryad
dataset
2022
FOS: Biological sciences
Japan Society for the Promotion of Science
https://ror.org/00hhkn466
19770014
Japan Society for the Promotion of Science
https://ror.org/00hhkn466
22770019
Japan Society for the Promotion of Science
https://ror.org/00hhkn466
24570024
Japan Society for the Promotion of Science
https://ror.org/00hhkn466
16H04844
Japan Society for the Promotion of Science
https://ror.org/00hhkn466
21H02566
2022-10-24T00:00:00Z
2022-10-24T00:00:00Z
en
25849 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Natural selection against maladaptive interspecific reproductive
interactions may cause greater divergence in mating traits between
sympatric populations than between allopatric populations in a pair of
species, known as reproductive character displacement (RCD), evidence for
the lock-and-key hypothesis of genital evolution. However, the relative
importance of various processes contributing to RCD in genital morphology
(e.g., reinforcement, reproductive interference, and population filtering
or the Templeton effect) is not clear. Here, we examined hypotheses for
RCD in genital morphology, with a special focus on the Templeton effect
(which predicts that only highly differentiated populations can exist in
sympatry). We examined population-level fitness costs in interspecific
mating between Carabus maiyasanus and C. iwawakianus with RCD in genital
morphology. A mating experiment using populations with various degrees of
RCD in genital morphology showed no evidence for consistently lower
interspecific mating costs in C. maiyasanus populations in contact with
displacement in genital morphology than in remote populations, contrary to
the predictions of the Templeton effect. Alternatively, interspecific
mating costs varied among populations. Observed relationships between the
sizes of genital parts concerning isolation and interspecific mating costs
across populations suggested that population-level fitness costs do not
necessarily decrease during the process leading to RCD. Our results
provide insight into ecological and evolutionary processes during
secondary contact in closely related species.