| Autor: |
Dómhnall J. Jennings, Martin P. Gammell |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Jennings, D J & Gammell, M P 2022, ' Bystander fallow deer engage in third-party behaviour based on similarities in contestant resource-holding potential ', Animal Behaviour, vol. 191, pp. 33-41 . https://doi.org/10.1016/j.anbehav.2022.06.005 |
| DOI: |
10.1016/j.anbehav.2022.06.005 |
| Popis: |
Competitive dyadic interactions frequently attract the attention of bystanders that follow and disrupt the ongoing contest. The motivation for bystanders to engage in such third-party behaviour is considered by several different theoretical approaches; one such model argues that bystanders intervene to prevent subordinates from gaining a winner effect, thereby becoming a threat to the individual’s dominant status within the group. This study investigates the role of contestant morphology as a motivating factor in initiating third-party behaviour. We investigated whether two correlates of resource holding potential, pre-rut body weight and antler weight, were associated with third-party behaviour in rutting male fallow deer (Dama dama). In addition, we also examined whether a third factor, reproductive effort (weight loss during the rut) was associated with third-party behaviour. There was a positive relationship between antler weight and the number of times individual males experienced third-party behaviour during contests. This relationship was not evident for either pre-rut weight or weight loss. An analysis of third-party behaviour showed that as the difference in both pre-rut and antler weight between the competing males declined, there was an increase in the probability that the dyad would experience third-party behaviour. However, there was no such association between the difference in weight loss between contestants and third-party behaviour. Thus, dyads containing males closely matched in terms of individual quality were likely to experience third-party behaviour. We show for the first time that morphological traits associated with resource holding potential are important cues used by rivals as a basis for engaging in third-party behaviour. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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