Colony size, but not density, affects survival and mating success of alternative male reproductive tactics in a polyphenic mite, Rhizoglyphus echinopus

2014
journal article
article
7
dc.abstract.enAmong acarid mites, a number of species are characterised by the presence of discontinuous morphologies (armed heteromorphs vs. unarmed homeomorphs) associated with alternative mating tactics (fighting vs. scramble competition). In Rhizoglyphus echinopus, expression of the fighter morph is suppressed, via pheromones, in large, dense colonies. If this mechanism is adaptive, fighters should have relatively lower fitness in large and/or dense colonies, due to costs incurred from fighting, which is often fatal. In order to test these predictions, we quantified the survival and mating success of fighters and scramblers in colonies of equal sex and morph ratios; these colonies either differed in size (4, 8, or 32 individuals) but not density or differed in density but not size (all consisted of 8 individuals). We found that the relative survival and mating success of fighters was inversely related to colony size, but we did not find a significant effect of colony density. The higher mating success of fighters in small colonies was due to the fact that, after killing rival males, these fighters were able to monopolise females. This situation was not found in larger colonies, in which there was a larger number of competitors and fighters suffered relatively higher mortality. These results indicate that morph determination, guided by social cues, allows for the adaptive adjustment of mating tactics to existing demographic conditions.pl
dc.affiliationWydział Biologii i Nauk o Ziemi : Instytut Nauk o Środowiskupl
dc.contributor.authorRadwan, Jacek - 131621 pl
dc.contributor.authorŁukasiewicz, Aleksandrapl
dc.contributor.authorTwardawa, Mateuszpl
dc.date.accessioned2015-04-14T08:53:32Z
dc.date.available2015-04-14T08:53:32Z
dc.date.issued2014pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.admin[AU] Radwan, Jacek [SAP11014051]
dc.description.number12pl
dc.description.physical1921-1928pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume68pl
dc.identifier.doi10.1007/s00265-014-1787-7pl
dc.identifier.eissn1432-0762pl
dc.identifier.issn0340-5443pl
dc.identifier.projectROD UJ / Ppl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/4936
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa*
dc.rights.licenceCC-BY
dc.rights.urihttps://creativecommons.org/licenses*
dc.share.typeinne
dc.subject.enalternative reproductive tacticspl
dc.subject.enpolyphenismpl
dc.subject.enconditional strategypl
dc.subject.enpopulation densitypl
dc.subject.enpopulation sizepl
dc.subject.enacaripl
dc.subject.enastigmatapl
dc.subtypeArticlepl
dc.titleColony size, but not density, affects survival and mating success of alternative male reproductive tactics in a polyphenic mite, Rhizoglyphus echinopuspl
dc.title.journalBehavioral Ecology and Sociobiologypl
dc.typeJournalArticlepl
dspace.entity.typePublication
dc.abstract.enpl
Among acarid mites, a number of species are characterised by the presence of discontinuous morphologies (armed heteromorphs vs. unarmed homeomorphs) associated with alternative mating tactics (fighting vs. scramble competition). In Rhizoglyphus echinopus, expression of the fighter morph is suppressed, via pheromones, in large, dense colonies. If this mechanism is adaptive, fighters should have relatively lower fitness in large and/or dense colonies, due to costs incurred from fighting, which is often fatal. In order to test these predictions, we quantified the survival and mating success of fighters and scramblers in colonies of equal sex and morph ratios; these colonies either differed in size (4, 8, or 32 individuals) but not density or differed in density but not size (all consisted of 8 individuals). We found that the relative survival and mating success of fighters was inversely related to colony size, but we did not find a significant effect of colony density. The higher mating success of fighters in small colonies was due to the fact that, after killing rival males, these fighters were able to monopolise females. This situation was not found in larger colonies, in which there was a larger number of competitors and fighters suffered relatively higher mortality. These results indicate that morph determination, guided by social cues, allows for the adaptive adjustment of mating tactics to existing demographic conditions.
dc.affiliationpl
Wydział Biologii i Nauk o Ziemi : Instytut Nauk o Środowisku
dc.contributor.authorpl
Radwan, Jacek - 131621
dc.contributor.authorpl
Łukasiewicz, Aleksandra
dc.contributor.authorpl
Twardawa, Mateusz
dc.date.accessioned
2015-04-14T08:53:32Z
dc.date.available
2015-04-14T08:53:32Z
dc.date.issuedpl
2014
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.admin
[AU] Radwan, Jacek [SAP11014051]
dc.description.numberpl
12
dc.description.physicalpl
1921-1928
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
68
dc.identifier.doipl
10.1007/s00265-014-1787-7
dc.identifier.eissnpl
1432-0762
dc.identifier.issnpl
0340-5443
dc.identifier.projectpl
ROD UJ / P
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/4936
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa
dc.rights.licence
CC-BY
dc.rights.uri*
https://creativecommons.org/licenses
dc.share.type
inne
dc.subject.enpl
alternative reproductive tactics
dc.subject.enpl
polyphenism
dc.subject.enpl
conditional strategy
dc.subject.enpl
population density
dc.subject.enpl
population size
dc.subject.enpl
acari
dc.subject.enpl
astigmata
dc.subtypepl
Article
dc.titlepl
Colony size, but not density, affects survival and mating success of alternative male reproductive tactics in a polyphenic mite, Rhizoglyphus echinopus
dc.title.journalpl
Behavioral Ecology and Sociobiology
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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