Please use this identifier to cite or link to this item: https://doi.org/10.1371/journal.pone.0040939
DC FieldValue
dc.titleMating plugs in polyandrous giants: Which sex produces them, when, how and why?
dc.contributor.authorKuntner, M.
dc.contributor.authorGregorič, M.
dc.contributor.authorZhang, S.
dc.contributor.authorKralj-Fišer, S.
dc.contributor.authorLi, D.
dc.date.accessioned2014-10-27T08:33:08Z
dc.date.available2014-10-27T08:33:08Z
dc.date.issued2012-07-19
dc.identifier.citationKuntner, M., Gregorič, M., Zhang, S., Kralj-Fišer, S., Li, D. (2012-07-19). Mating plugs in polyandrous giants: Which sex produces them, when, how and why?. PLoS ONE 7 (7) : -. ScholarBank@NUS Repository. https://doi.org/10.1371/journal.pone.0040939
dc.identifier.issn19326203
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/101064
dc.description.abstractBackground: Males usually produce mating plugs to reduce sperm competition. However, females can conceivably also produce mating plugs in order to prevent unwanted, superfluous and energetically costly matings. In spiders-appropriate models for testing plugging biology hypotheses-mating plugs may consist of male genital parts and/or of amorphous covers consisting of glandular or sperm secretions. In the giant wood spider Nephila pilipes, a highly sexually dimorphic and polygamous species, males are known to produce ineffective embolic plugs through genital damage, but nothing is known about the origin and function of additional conspicuous amorphous plugs (AP) covering female genitals. Methodology: We tested alternative hypotheses of the nature and function of AP in N. pilipes by staging mating trials with varying degrees of polyandry. No APs were ever formed during mating trials, which rules out the possibility of male AP formation. Instead, those females that oviposited produced the AP from a liquid secreted during egg sac formation. Polyandrous females were more likely to lay eggs and to produce the AP, as were those that mated longer and with more total insertions. Our further tests revealed that, in spite of being a side product of egg sac production, AP, when hardened, prevented any subsequent copulation. Conclusions: We conclude that in the giant wood spider (Nephila pilipes), the amorphous mating plugs are not produced by the males, that repeated copulations (most likely polyandrous) are necessary for egg fertilization and AP formation, and that the AP represents a female adaptation to sexual conflict through prevention of unwanted, excessive copulations. Considering the largely unknown origin of amorphous plugs in spiders, we predict that a similar pattern might be detected in other clades, which would help elucidate the evolutionary interplay of various selection pressures responsible for the origin and maintenance of mating plugs. © 2012 Kuntner et al.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1371/journal.pone.0040939
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentBIOLOGICAL SCIENCES
dc.description.doi10.1371/journal.pone.0040939
dc.description.sourcetitlePLoS ONE
dc.description.volume7
dc.description.issue7
dc.description.page-
dc.identifier.isiut000306956300038
Appears in Collections:Staff Publications
Elements

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
2012-mating_plugs_polyandrous_giants_which-pub.pdf4.45 MBAdobe PDF

OPEN

PublishedView/Download

SCOPUSTM   
Citations

22
checked on Feb 3, 2023

WEB OF SCIENCETM
Citations

19
checked on Feb 3, 2023

Page view(s)

381
checked on Feb 2, 2023

Download(s)

4
checked on Feb 2, 2023

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.