Males with high genetic similarity to females sire more offspring in sperm competition in Peron's tree frog<i>Litoria peronii</i>

Sherman, Craig D. H.; Wapstra, Erik; Uller, Tobias; Olsson, Mats

doi:10.1098/rspb.2007.1626

Cited by 54 publications

(74 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surprisingly, we also found no evidence that the proportion of viable sperm within a male's ejaculate affects siring success in sperm competition or in the single-species fertilizations (controls). This is consistent with our previous study on sperm competition in L. peronii (Sherman et al, 2008b), which showed that the only significant predictor of siring success in sperm competition trials is the corresponding success of males in control fertilizations. This suggests that some unmeasured intrinsic property of a male's sperm (or semen) is important in determining a male's siring success at fertilization.…”

Section: Trial Number Proportion Offspring Siredsupporting

confidence: 82%

“…Furthermore, the fact that L. peronii males more closely related with the female have a fertilization advantage also suggests that the risk of hybridization is real in the wild (Sherman et al, 2008b). We were, however, surprised at the complete hybrid compatibility at the gametic level-especially in a situation of sperm competition with another species.…”

Section: Trial Number Proportion Offspring Siredmentioning

confidence: 76%

“…In vitro fertilizations and sperm competition trials We followed the protocol for artificial fertilizations for L. peronii outlined by Sherman et al (2008b). Briefly, 30 independent sperm competition and control fertilization trials were carried out using sperm collected from one randomly chosen male L. peronii and one randomly chosen male L. tyleri with a randomly chosen female L. peronii (Figure 1).…”

Section: Study Speciesmentioning

confidence: 99%

“…The current study builds on our previous observation of a fertilization advantage of males more closely related with a female in staged artificial fertilization trials in the Australian tree frog, Litoria peronii (Sherman et al, 2008b). An implicit assumption in this study was that of compromised offspring viability in hybrid matings with the sympatric L. tyleri, much to the same effect as the recently described ongoing speciation between lineages of another Australian tree frog, L. genimaculata (Hoskin et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Sperm competition and offspring viability at hybridization in Australian tree frogs, Litoria peronii and L. tyleri

2009

Self Cite

View full text Add to dashboard Cite

Hybridization between closely related species often leads to reduced viability or fertility of offspring. Complete failure of hybrid offspring (post-zygotic hybrid incompatibilities) may have an important role in maintaining the integrity of reproductive barriers between closely related species. We show elsewhere that in Peron's tree frog, Litoria peronii, males more closely related to a female sire more offspring in sperm competition with a less related rival male. Observations of rare 'phenotypic intermediate' males between L. peronii and the closely related L. tyleri made us suggest that these relatedness effects on siring success may be because of selection arising from risks of costly hybridization between the two species. Here, we test this hypothesis in an extensive sperm competition experiment, which shows that there is no effect of species identity on probability of fertilization in sperm competition trials controlling for sperm concentration and sperm viability. Instead, there was a close agreement between a male's siring success in isolation with a female and his siring success with the same female in competition with a rival male regardless of species identity. Offspring viability and survival, however, were strongly influenced by species identity. Over a 14-day period, hybrid offspring suffered increasing mortality and developed more malformations and an obvious inability to swim and right themselves, leading to compromised probability of survival. Thus, hybridization in these sympatric tree frogs does not compromise fertilization but has a strong impact on offspring viability and opportunity for reinforcement selection on mate choice for conspecific partners.

show abstract

Section: Trial Number Proportion Offspring Siredsupporting

confidence: 82%

Section: Trial Number Proportion Offspring Siredmentioning

confidence: 76%

Section: Study Speciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sperm competition and offspring viability at hybridization in Australian tree frogs, Litoria peronii and L. tyleri

2009

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the guppy, sperm velocity in the ovarian fluid and fertilization success were higher for males unrelated to the female than for related (full-sib) males . Fertilization experiments in Arctic charr (Liljedal et al, 2008) revealed a higher fertilization success for males genetically less similar to the female, while in the Peron's tree frog (Sherman et al, 2008) fertilization success was biased towards males genetically more similar to the female. In contrast, in Lake Trout, sperm velocity was lower for males unrelated to the female than for related (full-sib) males (Butts et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Sexual selection for genetic compatibility: the role of the major histocompatibility complex on cryptic female choice in Chinook salmon (Oncorhynchus tshawytscha)

et al. 2017

View full text Add to dashboard Cite

Cryptic female choice (CFC), a form of sexual selection during or post mating, describes processes of differential sperm utilization by females to bias fertilization outcomes towards certain males. In Chinook salmon (Oncorhynchus tshawytscha) the ovarian fluid surrounding the ova of a given female differently enhances the sperm velocity of males. Sperm velocity is a key ejaculate trait that determines fertilization success in externally fertilizing fishes, thus the differential effect on sperm velocity might bias male fertilization outcomes and represent a mechanism of CFC. Once sperm reach the oocyte, CFC could potentially be further facilitated by sperm-egg interactions, which are well understood in externally fertilizing marine invertebrates. Here, we explored the potential genetic basis of both possible mechanisms of CFC by examining whether the genotypic combinations of mates (amino-acid divergence, number of shared alleles) at the major histocompatibility complex (MHC) class I and II explain the variation in sperm velocity and/or male fertilization success that is not explained by sperm velocity, which might indicate MHC-based sperm-egg interactions. We recorded sperm velocity in ovarian fluid, employed paired-male fertilization trials and evaluated the fertilization success of each male using microsatellite-based paternity assignment. We showed that relative sperm velocity was positively correlated with fertilization success, confirming that the differential effect on sperm velocity may be a mechanism of CFC in Chinook salmon. The variation in sperm velocity was independent of MHC class I and II. However, the MHC class II divergence of mates explained fertilization success, indicating that this locus might influence sperm-egg interactions.

show abstract

The more pieces, the better the puzzle: sperm concentration increases gametic compatibility

Sherman

Rahim

Olsson

et al. 2015

Ecology and Evolution

View full text Add to dashboard Cite

The genetic benefits individuals receive from mate choice have been the focus of numerous studies, with several showing support for both intrinsic genetic benefits and compatibility effects on fertilization success and offspring viability. However, the robustness of these effects have rarely been tested across an ecologically relevant environmental gradient. In particular, sperm environment is a crucial factor determining fertilization success in many species, especially those with external fertilization. Here, we test the importance of sperm environment in mediating compatibility‐based selection on fertilization using a factorial breeding design. We detected a significant intrinsic male effect on fertilization success at only one of four sperm concentrations. Compatibility effects were significant at the two highest sperm concentrations and, interestingly, the magnitude of the compatibility effect consistently increased with sperm concentration. This suggests that females are able to modify the probability of sperm–egg fusion as the amount of sperm available increases.

show abstract

Males with high genetic similarity to females sire more offspring in sperm competition in Peron's tree frogLitoria peronii

Cited by 54 publications

References 50 publications

Sperm competition and offspring viability at hybridization in Australian tree frogs, Litoria peronii and L. tyleri

Sperm competition and offspring viability at hybridization in Australian tree frogs, Litoria peronii and L. tyleri

Sexual selection for genetic compatibility: the role of the major histocompatibility complex on cryptic female choice in Chinook salmon (Oncorhynchus tshawytscha)

The more pieces, the better the puzzle: sperm concentration increases gametic compatibility

Contact Info

Product

Resources

About