Experimental manipulation suggests effect of polyandry but not mate familiarity on within-pair aggression in the social skink, Liopholis whitii

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Abstract: Long-term monogamy is a key characteristic of family living across animals. The evolutionary maintenance of long-term monogamy has been suggested to be facilitated by increased reproductive coordination as a result of mate familiarity, leading to increased reproductive success. However, such effects can be compromised if females mate outside the pair bond (e.g. female polyandry), introducing conflicts of interest between the male and female. Here, we experimentally test the effects of both mate familiarity and female polyandry on agonistic behaviour and reproduction in a family living lizard, Liopholis whitii. We found that mate familiarity did not decrease the level of aggression between pairs whereas reducing female polyandry did. However, we did not find an effect of either mate familiarity or female polyandry on female reproductive output. These results suggest that male behavioural responses to female polyandry may influence pair stability in Liopholis whitii, providing support for the growing appreciation of the multiple ways in which female polyandry can influence the stability of family living. Significance statement: Family living is underpinned by social pair bonds between adults (i.e. stable social monogamy). Therefore, key to understanding the emergence and maintenance of family living is identifying factors influencing pair bonds. We manipulated both female polyandry and mate familiarly in replicated enclosure experiment using social lizards to test their role in mediating within-pair aggression and ultimately the coordination of reproductive behaviour and hence reproductive output. We found that polyandry but not mate familiarity influenced levels of aggression between pairs but this did not transmit into concomitant effects on reproductive output.

Detaljer

Författare
  • Thomas Botterill-James
  • Jacinta Sillince
  • Tobias Uller
  • David G. Chapple
  • Michael G Gardner
  • Erik Wapstra
  • Geoffrey M. While
Enheter & grupper
Externa organisationer
  • University of Tasmania
  • Monash University
  • Flinders University
  • South Australian Museum
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Evolutionsbiologi

Nyckelord

Originalspråkengelska
Artikelnummer71
TidskriftBehavioral Ecology and Sociobiology
Volym71
Utgivningsnummer4
StatusPublished - 2017 apr 1
PublikationskategoriForskning
Peer review utfördJa