Abstract
Female reproductive effort can be influenced by the quality of her mate. In some species, females increase their reproductive effort by differentially allocating resources after mating with high-quality males. Examination of female reproductive effort in relation to male quality has implications for estimating the evolvability of traits and for sexual-selection models. Accurate quantification of reproductive investment is not possible in many species. Butterflies are an exception, as most nectar-feeding species emerge with almost intact reproductive resources, and in some species males provide nutrients at mating that enhance female fecundity. By manipulating male donations and using radioactive isotopes, we quantified the effect of variation in nutrient provisioning on female reproductive effort in two butterfly species. In the greenveined white butterfly, Pieris napi, females increased their reproductive effort after receiving large male donations. By contrast, in the speckled wood, Pararge aegeria, where males do not provide nutrients, female reproductive effort was independent of male ejaculate. Increased reproductive effort in Pieris napi resulted from the production of more eggs, rather than from investing more resources per egg. In this species donating ability is heritable; hence females laying more eggs after mating with high-donating males benefit both through higher fecundity and through the production of high-donating sons.
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Selected References
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- Boggs C. L., Gilbert L. E. Male contribution to egg production in butterflies: evidence for transfer of nutrients at mating. Science. 1979 Oct 5;206(4414):83–84. doi: 10.1126/science.206.4414.83. [DOI] [PubMed] [Google Scholar]
- Chapman T. Seminal fluid-mediated fitness traits in Drosophila. Heredity (Edinb) 2001 Nov;87(Pt 5):511–521. doi: 10.1046/j.1365-2540.2001.00961.x. [DOI] [PubMed] [Google Scholar]
- Cunningham E. J., Russell A. F. Egg investment is influenced by male attractiveness in the mallard. Nature. 2000 Mar 2;404(6773):74–77. doi: 10.1038/35003565. [DOI] [PubMed] [Google Scholar]
- Gil D., Graves J., Hazon N., Wells A. Male attractiveness and differential testosterone investment in zebra finch eggs. Science. 1999 Oct 1;286(5437):126–128. doi: 10.1126/science.286.5437.126. [DOI] [PubMed] [Google Scholar]
- Gillott Cedric. Male accessory gland secretions: modulators of female reproductive physiology and behavior. Annu Rev Entomol. 2002 Jun 4;48:163–184. doi: 10.1146/annurev.ento.48.091801.112657. [DOI] [PubMed] [Google Scholar]
- McAdam Andrew G., Boutin Stan, Réale Denis, Berteaux Dominique. Maternal effects and the potential for evolution in a natural population of animals. Evolution. 2002 Apr;56(4):846–851. doi: 10.1111/j.0014-3820.2002.tb01396.x. [DOI] [PubMed] [Google Scholar]
- MØller Ap, Thornhill R. Male parental care, differential parental investment by females and sexual selection. Anim Behav. 1998 Jun;55(6):1507–1515. doi: 10.1006/anbe.1998.0731. [DOI] [PubMed] [Google Scholar]
- O'Brien Diane M., Fogel Marilyn L., Boggs Carol L. Renewable and nonrenewable resources: amino acid turnover and allocation to reproduction in Lepidoptera. Proc Natl Acad Sci U S A. 2002 Apr 2;99(7):4413–4418. doi: 10.1073/pnas.072346699. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Petrie M., Schwabl H., Brande-Lavridsen N., Burke T. Maternal investment. Sex differences in avian yolk hormone levels. Nature. 2001 Aug 2;412(6846):498–499. doi: 10.1038/35087652. [DOI] [PubMed] [Google Scholar]
- Pizzari T., Birkhead T. R. Female feral fowl eject sperm of subdominant males. Nature. 2000 Jun 15;405(6788):787–789. doi: 10.1038/35015558. [DOI] [PubMed] [Google Scholar]
- Qvarnström A., Price T. D. Maternal effects, paternal effects and sexual selection. Trends Ecol Evol. 2001 Feb 1;16(2):95–100. doi: 10.1016/s0169-5347(00)02063-2. [DOI] [PubMed] [Google Scholar]
- Saino Nicola, Ferrari Raffaella Paola, Martinelli Roberta, Romano Maria, Rubolini Diego, Møller Anders Pape. Early maternal effects mediated by immunity depend on sexual ornamentation of the male partner. Proc Biol Sci. 2002 May 22;269(1495):1005–1009. doi: 10.1098/rspb.2002.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Service P. M., Vossbrink R. E. Genetic variation in "first" male effects on egg laying and remating by female Drosophila melanogaster. Behav Genet. 1996 Jan;26(1):39–48. doi: 10.1007/BF02361157. [DOI] [PubMed] [Google Scholar]
- Sheldon BC. Differential allocation: tests, mechanisms and implications. Trends Ecol Evol. 2000 Oct 1;15(10):397–402. doi: 10.1016/s0169-5347(00)01953-4. [DOI] [PubMed] [Google Scholar]