Rival assessment by territorial southern white rhinoceros males via eavesdropping on the contact and courtship calls

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73604308" target="_blank" >RIV/61989592:15310/20:73604308 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0003347220301494" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0003347220301494</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.anbehav.2020.05.013" target="_blank" >10.1016/j.anbehav.2020.05.013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rival assessment by territorial southern white rhinoceros males via eavesdropping on the contact and courtship calls

Popis výsledku v původním jazyce

Eavesdropping on vocal signals allows animals to gather information about conspecifics. For males, eavesdropping can be a low-risk method for determining the dominance status (e.g. territorial or subordinate) and motivation (e.g. mate seeking) of rivals. Adult southern white rhino males, Ceratotherium simum, are territorial and, in addition to other vocalizations, use contact and courtship calls when communicating with females. Although male territories are exclusive, the owners may tolerate up to three resident subordinate males. However, rival males sometimes intrude. Moreover, these intrusions may lead to rivals interacting with females. We investigated whether territorial males eavesdrop on vocal signals directed towards females by intruding males to determine their dominance status (territorial or subordinate) and motivation (contact calling an anoestrous female or approaching a female in oestrus during courtship). To do this, we first recorded and analysed contact and courtship calls of adult southern white rhino males and determined that these calls signal the males&apos; dominance status and motivation. Playback trials revealed that territorial males differentiated between the calls of subordinate and other territorial males, showing a shorter latency to approach and longer searching behaviour (i.e. walking and running) after the playback of a subordinate&apos;s call. The reason for this response could be that the intruding subordinate male might be looking to challenge the territorial male for his territory. However, subordinates probably pose the lowest risk to the resident male in terms of fighting ability. In contrast, the reactions of the territorial males to the calls of other territorial males suggest that the presence and not the motivation of an intruding male was the most important factor influencing the male&apos;s reaction. We conclude that territorial males eavesdrop on the acoustic signals of trespassing males to gather information about these rivals, which can help them to better defend their territory.

Název v anglickém jazyce

Rival assessment by territorial southern white rhinoceros males via eavesdropping on the contact and courtship calls

Popis výsledku anglicky

Eavesdropping on vocal signals allows animals to gather information about conspecifics. For males, eavesdropping can be a low-risk method for determining the dominance status (e.g. territorial or subordinate) and motivation (e.g. mate seeking) of rivals. Adult southern white rhino males, Ceratotherium simum, are territorial and, in addition to other vocalizations, use contact and courtship calls when communicating with females. Although male territories are exclusive, the owners may tolerate up to three resident subordinate males. However, rival males sometimes intrude. Moreover, these intrusions may lead to rivals interacting with females. We investigated whether territorial males eavesdrop on vocal signals directed towards females by intruding males to determine their dominance status (territorial or subordinate) and motivation (contact calling an anoestrous female or approaching a female in oestrus during courtship). To do this, we first recorded and analysed contact and courtship calls of adult southern white rhino males and determined that these calls signal the males&apos; dominance status and motivation. Playback trials revealed that territorial males differentiated between the calls of subordinate and other territorial males, showing a shorter latency to approach and longer searching behaviour (i.e. walking and running) after the playback of a subordinate&apos;s call. The reason for this response could be that the intruding subordinate male might be looking to challenge the territorial male for his territory. However, subordinates probably pose the lowest risk to the resident male in terms of fighting ability. In contrast, the reactions of the territorial males to the calls of other territorial males suggest that the presence and not the motivation of an intruding male was the most important factor influencing the male&apos;s reaction. We conclude that territorial males eavesdrop on the acoustic signals of trespassing males to gather information about these rivals, which can help them to better defend their territory.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

ANIMAL BEHAVIOUR

ISSN

0003-3472

e-ISSN

—

Svazek periodika

166

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

19-31

Kód UT WoS článku

000555887500003

EID výsledku v databázi Scopus

2-s2.0-85087285270