In:
ABI Genetika, National Library of Serbia, Vol. 45, No. 2 ( 2013), p. 537-552
Abstract:
According to theoretical predictions sexual selection can reduce mutational
load through male mating success. Males of good genetic quality should be
more successful in matings, compared to the males of low genetic quality,
thus in this way females can prevent deleterious alleles to be transmitted to
the next generation. We tested this hypothesis through set up of two
experimental groups from same genetic pool, where in one group genetic
quality was manipulated by ionizing radiation. Within each group opportunity
for choosing mates was imposed: males and females had no choice or had
multiple choice. Mutational load was measured through the variability of
different fitness components: fecundity and egg-to-adult viability. Our
results indicate that sexual selection can reduce mutational load, only for
fecundity. Group with the presence of female choice exhibited higher
fecundity than group in which sexual selection was experimentally eliminated,
but only in ?irradiated? group. There was no overall difference in
egg-to-adult viability between different sexual selection regimes in any of
the group. It should be considered that sexual selection can cause sexual
conflict, and potential opposite effects of sexual selection and sexual
conflict on fitness. Genetic structure of populations, in terms of the level
of mutational load, is an important factor which can determinate the role of
sexual selection.
Type of Medium:
Online Resource
ISSN:
0534-0012
,
1820-6069
DOI:
10.2298/GENSR1302537V
Language:
English
Publisher:
National Library of Serbia
Publication Date:
2013
detail.hit.zdb_id:
2585955-9
SSG:
12
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