Sökning: onr:"swepub:oai:DiVA.org:kau-97272" >
Evidence for strong...
Evidence for stronger sexual selection in males than in females using an adapted method of Bateman's classic study of Drosophila melanogaster
-
- Davies, Natasha (författare)
- University of Sussex, England
-
- Janicke, Tim (författare)
- Technical University Dresden, Germany; Univ Montpellier, France
-
- Morrow, Edward H. (författare)
- Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013),University of Sussex, England
-
(creator_code:org_t)
- Oxford University Press, 2023
- 2023
- Engelska.
-
Ingår i: Evolution. - : Oxford University Press. - 0014-3820 .- 1558-5646. ; 77:11, s. 2420-2430
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://kau.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Bateman's principles, originally a test of Darwin's theoretical ideas, have since become fundamental to sexual selection theory and vital to contextualizing the role of anisogamy in sex differences of precopulatory sexual selection. Despite this, Bateman's principles have received substantial criticism, and researchers have highlighted both statistical and methodological errors, suggesting that Bateman's original experiment contains too much sampling bias for there to be any evidence of sexual selection. This study uses Bateman's original method as a template, accounting for two fundamental flaws in his original experiments, (a) viability effects and (b) a lack of mating behavior observation. Experimental populations of Drosophila melanogaster consisted of wild-type focal individuals and nonfocal individuals established by backcrossing the brown eye (bw-) eye-color marker-thereby avoiding viability effects. Mating assays included direct observation of mating behavior and total number of offspring, to obtain measures of mating success, reproductive success, and standardized variance measures based on Bateman's principles. The results provide observational support for Bateman's principles, particularly that (a) males had significantly more variation in number of mates compared with females and (b) males had significantly more individual variation in total number of offspring. We also find a significantly steeper Bateman gradient for males compared to females, suggesting that sexual selection is operating more intensely in males. However, female remating was limited, providing the opportunity for future study to further explore female reproductive success in correlation with higher levels of remating.
Ämnesord
- NATURVETENSKAP -- Biologi -- Annan biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Other Biological Topics (hsv//eng)
Nyckelord
- Bateman's principles
- Drosophila melanogaster
- sexual selection
- mating
- reproductive success
- Biology
- Biologi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas