sherman-themorepieces-2015.pdf (360.24 kB)
The more pieces, the better the puzzle: sperm concentration increases gametic compatibility
journal contribution
posted on 2015-10-01, 00:00 authored by Craig ShermanCraig Sherman, Emi Sherizan Ab Rahim, M Olsson, Vincent CareauThe 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.
History
Journal
Ecology and evolutionVolume
5Issue
19Pagination
4354 - 4364Publisher
WileyLocation
London, Eng.Publisher DOI
eISSN
2045-7758Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2015, The AuthorsUsage metrics
Keywords
Cryptic female choiceMytilusgenotype by environmentgood genespolyandryquantitative geneticssperm competitionScience & TechnologyLife Sciences & BiomedicineEcologyEvolutionary BiologyEnvironmental Sciences & EcologyPERONS TREE FROGGENETIC COMPATIBILITYSEXUAL SELECTIONBLUE MUSSELFERTILIZATION SUCCESSMATE CHOICEDEPENDENT SELECTIONMICROSATELLITE LOCICHINOOK SALMONEVOLUTIONEvolutionary BiologyEcology
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