Testing models of facultative sex ratio adjustment in the pollinating fig wasp Platyscapa awekei

dc.contributor.authorGreeff, Jacobus Maree
dc.contributor.authorNewman, Duncan Victor Kimberlin
dc.contributor.emailjaco.greeff@up.ac.zaen_US
dc.date.accessioned2012-05-30T11:15:46Z
dc.date.available2012-05-30T11:15:46Z
dc.date.issued2011-01
dc.description.abstractFemale hymenoptera are renowned for their ability to adjust offspring sex ratio to local mate competition. When two females share a patch, they frequently produce clutches that differ in size, the female with the larger clutch optimally producing a more female-biased sex ratio and vice versa. Females can base their sex allocation on their own clutch size only (“self-knowledge”) or on both females’ clutch sizes (“complete knowledge”). Few studies have genotyped offspring so that each mother’s contribution can be considered separately while none has found that both sources of information are used simultaneously. We genotyped 2489 wasps from 28 figs and assigned their maternity to one of the two foundress females. We argue that likelihood is a very convenient method to compare alternative models, while fitness calculations help to appreciate the cost ofmaladaptation.We find that the pollinating fig wasp Platyscapa awekei simultaneously uses its own as well as the other females clutch size in allocating sex. Indeed, the complete knowledge model explains the data 36 times better than the self-knowledge model. However, large clutches contained fewer males than the optimal predictions leading to a median selection coefficient of 0.01.en
dc.description.librariannf2012en
dc.description.sponsorshipThe running costs were funded by National Research Foundation (NRF) grants 2053809 and 2072974 to JMG. DVKN was supported by a freestanding Masters scholarship from the NRF.en_US
dc.description.urihttp://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1558-5646en_US
dc.identifier.citationGreeff, JM & Newman, DVK 2011, 'Testing models of facultative sex ratio adjustment in the pollinating fig wasp Platyscapa awekei', Evolution, vol. 65, no. 1, pp. 203-219.en
dc.identifier.issn0014-3820 (print)
dc.identifier.issn1558-5646 (online)
dc.identifier.other10.1111/j.1558-5646.2010.01116.x
dc.identifier.urihttp://hdl.handle.net/2263/19020
dc.language.isoenen_US
dc.publisherWiley-Blackwellen_US
dc.rights© 2010 The Author(s). Evolution © 2010 The Society for the Study of Evolution.The definite version is available at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1558-5646.en_US
dc.subjectClutch size (Zoology)en
dc.subjectPlatyscapa awekeien
dc.subject.lcshFig wasp -- Sex ratioen
dc.subject.lcshKin selection (Evolution)en
dc.subject.lcshSex allocationen
dc.titleTesting models of facultative sex ratio adjustment in the pollinating fig wasp Platyscapa awekeien
dc.typePostprint Articleen

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Greeff_Testing(2011).pdf
Size:
393.27 KB
Format:
Adobe Portable Document Format
Description:
Postprint Article

License bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: