Relationship between dominance hierarchy steepness and rank-relatedness of benefits in primates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F24%3A43908820" target="_blank" >RIV/60076658:12310/24:43908820 - isvavai.cz</a>

Výsledek na webu

<a href="https://academic.oup.com/beheco/article/35/5/arae066/7732141?login=true" target="_blank" >https://academic.oup.com/beheco/article/35/5/arae066/7732141?login=true</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/beheco/arae066" target="_blank" >10.1093/beheco/arae066</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Relationship between dominance hierarchy steepness and rank-relatedness of benefits in primates

Popis výsledku v původním jazyce

In animal social groups, the extent to which individuals consistently win agonistic interactions and their ability to monopolize resources represent 2 core aspects of their competitive regime. However, whether these two aspects are closely correlated within groups has rarely been studied. Here, we tested the hypothesis that hierarchy steepness, which is generally used to represent power differentials between group members, predicts the variation in the distribution of fitness-related benefits (i.e. fecundity, infant survival, mating success, and feeding success) in relation to individual dominance ranks. We tested this hypothesis in primate groups using comparative phylogenetic meta-analytical techniques. Specifically, we reviewed published and unpublished studies to extract data on individual dominance ranks, their access to fitness-related benefits, and hierarchy steepness. We collected and included in our analysis a total of 153 data points, representing 27 species (including 2 chimpanzee sub-species). From these, we used 4 common methods to measure individual dominance ranks and hierarchy steepness, i.e. Dij-based normalized David&apos;s scores, randomized Elo-ratings, and David&apos;s scores and Elo-ratings estimated in Bayesian frameworks. We found that hierarchy steepness had no effect on the strength of the relationship between dominance rank and access to fitness-related benefits. Our results suggest that hierarchy steepness does not reflect between-group variation in the extent to which individual dominance affects the acquisition of fitness-related benefits in primates. Although the ability to win agonistic encounters is essential, we speculate that other behavioral strategies adopted by individuals may play crucial roles in resource acquisition in animal competitive regimes. In social animals, group members compete to attain dominant positions. Dominant individuals are expected to have better access to key resources, like food or mating. In our study, we show that the strength of the dominance hierarchy does not affect the distribution of key resources in primates. The distribution of social bonds and agonistic support between group members may weaken the effect of dominance hierarchy on how key resources are accessed by dominants and subordinates.

Název v anglickém jazyce

Relationship between dominance hierarchy steepness and rank-relatedness of benefits in primates

Popis výsledku anglicky

In animal social groups, the extent to which individuals consistently win agonistic interactions and their ability to monopolize resources represent 2 core aspects of their competitive regime. However, whether these two aspects are closely correlated within groups has rarely been studied. Here, we tested the hypothesis that hierarchy steepness, which is generally used to represent power differentials between group members, predicts the variation in the distribution of fitness-related benefits (i.e. fecundity, infant survival, mating success, and feeding success) in relation to individual dominance ranks. We tested this hypothesis in primate groups using comparative phylogenetic meta-analytical techniques. Specifically, we reviewed published and unpublished studies to extract data on individual dominance ranks, their access to fitness-related benefits, and hierarchy steepness. We collected and included in our analysis a total of 153 data points, representing 27 species (including 2 chimpanzee sub-species). From these, we used 4 common methods to measure individual dominance ranks and hierarchy steepness, i.e. Dij-based normalized David&apos;s scores, randomized Elo-ratings, and David&apos;s scores and Elo-ratings estimated in Bayesian frameworks. We found that hierarchy steepness had no effect on the strength of the relationship between dominance rank and access to fitness-related benefits. Our results suggest that hierarchy steepness does not reflect between-group variation in the extent to which individual dominance affects the acquisition of fitness-related benefits in primates. Although the ability to win agonistic encounters is essential, we speculate that other behavioral strategies adopted by individuals may play crucial roles in resource acquisition in animal competitive regimes. In social animals, group members compete to attain dominant positions. Dominant individuals are expected to have better access to key resources, like food or mating. In our study, we show that the strength of the dominance hierarchy does not affect the distribution of key resources in primates. The distribution of social bonds and agonistic support between group members may weaken the effect of dominance hierarchy on how key resources are accessed by dominants and subordinates.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10614 - Behavioral sciences biology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Behavioral Ecology

ISSN

1045-2249

e-ISSN

1465-7279

Svazek periodika

35

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

001297773600001

EID výsledku v databázi Scopus

2-s2.0-85202684570