(WFRF:(Sundin A)) srt2:(2010-2014)
Search: (WFRF:(Sundin A)) srt2:(2010-2014) > The operational sex...
- 5 of 20
- Previous record
- Next record
- To hitlist
The operational sex ratio and density influence spatial relationships between breeding pipefish
- Aronsen, T. (author)
- Mobley, K. B. (author)
-
- Berglund, Anders (author)
- Uppsala universitet,Zooekologi
- show more...
- Billing, A. M. (author)
- Rosenqvist, G. (author)
- show less...
- (creator_code:org_t)
- 2013-03-26
- 2013
- English.
- In: Behavioral Ecology. - : Oxford University Press (OUP). - 1045-2249 .- 1465-7279. ; 24:4, s. 888-897
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- The operational sex ratio (ratio of sexually receptive males to females) has been extensively studied in behavioral ecology, whereas other demographic factors such as the effect of density on mating behavior have received less empirical attention. We manipulated mating competition by establishing breeding populations of the sex-role reversed broad-nosed pipefish (Syngnathus typhle) at 2 sex ratios (male biased or female biased) and 2 densities. We used mean crowding (m*) and the index of association (X) to measure spatial distributions within and between the sexes, respectively, and investigated how these measures reflect the predicted strength of mating competition. In general, female m* increased as fewer males were available for mating, which suggests increased intrasexual competition in the most competitive sex. However, male m* also increased as the operational sex ratio became more female biased, suggesting that m* did not reflect mating competition for males. Association between the sexes (X) was higher under male bias than female bias, probably because males were still available for mating under male bias. In addition, X decreased in the female-biased treatment as the operational sex ratio became even more female biased. Higher density increased m* in both sex ratios and sexes, although for both sexes in the female-biased high-density treatment the operational sex ratio did not influence m*, probably because femalefemale competition inhibits further crowding in this treatment. In this study, we show that the use of m* and X can be a useful tool in behavioral studies but their interpretation requires detailed information about the mating system. Therefore, we recommend caution with their broadscale application.
Keyword
- index of association
- mating competition
- mating system
- mean crowding
- sex roles
- sexual selection
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Behavioral Ecology (Search for host publication in LIBRIS)
To the university's database
- 5 of 20
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Aronsen, T.
- Mobley, K. B.
- Berglund, Anders
- Sundin, Josefin
- Billing, A. M.
- Rosenqvist, G.
- Articles in the publication
- Behavioral Ecolo ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
