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- W2503397145 abstract "Sexual selection and the mechanisms involved in sperm competition have not been greatly explored in ladybird beetles. The present study was conducted to investigate the processes of sperm competition and the role of mate guarding behaviour in its regulation in ladybird beetles. We investigated these questions in polyandrous females of the ladybird, Menochilus sexmaculatus (Coleoptera: Coccinellidae) using a phenotypic marker (typical and intermediate morph) to assess paternity of offspring; to determine sperm competition. We conducted two double mating experiments: (i) complete first and second matings, and (ii) disrupted first and complete second matings each using homomorphic and heteromorphic pairing in alternation. Males which mated last were found to sire up to 72% of the offspring produced, indicating last male sperm precedence. Morph itself, independent of mating order, did not have a significant effect on proportion of offspring sired. Paternity share of the last male was negatively associated with mating duration of the first male; mating duration of the first male being indicative of mate guarding. This therefore indicates that prolonged matings by first males are essentially examples of post-copulatory mate guarding to prevent last male sperm precedence." @default.
- W2503397145 created "2016-08-23" @default.
- W2503397145 creator A5015212443 @default.
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- W2503397145 date "2016-10-01" @default.
- W2503397145 modified "2023-10-14" @default.
- W2503397145 title "Last male wins the egg fertilization fight: A case study in ladybird, Menochilus sexmaculatus" @default.
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- W2503397145 doi "https://doi.org/10.1016/j.beproc.2016.07.015" @default.
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