J 2023

Egg mimicry, not the sight of a common cuckoo, is the cue for parasitic egg rejection

ŠTĚTKOVÁ, Gabriela, Michal ŠULC, Václav JELÍNEK, Anna HUGHES, Marcel HONZA et. al.

Basic information

Original name

Egg mimicry, not the sight of a common cuckoo, is the cue for parasitic egg rejection

Authors

ŠTĚTKOVÁ, Gabriela (203 Czech Republic, guarantor, belonging to the institution), Michal ŠULC, Václav JELÍNEK, Anna HUGHES and Marcel HONZA

Edition

Behavioral Ecology, Oxford University Press, 2023, 1045-2249

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10614 Behavioral sciences biology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.400 in 2022

RIV identification code

RIV/00216224:14310/23:00132101

Organization unit

Faculty of Science

UT WoS

001028034900001

Keywords in English

animal behavior; brood parasitism; coevolution; egg rejection; mimicry; video recording

Tags

Tags

International impact, Reviewed
Změněno: 22/12/2023 08:53, Mgr. Marie Šípková, DiS.

Abstract

V originále

Many studies have found that if hosts observe a brood parasite at their nest, they use it as a cue to reject parasitic eggs. However, most previous work has simulated brood parasitic events by exposing a stuffed parasite near a host's nest. Responses to the presence of a real parasite have not yet been adequately studied under natural conditions. We therefore investigated whether great reed warblers (Acrocephalus arundinaceus) are more likely to reject a parasitic egg if they see a parasitizing common cuckoo (Cuculus canorus) at their nest than if the parasite approaches the host nest unnoticed. Using video recordings of 70 nests, we showed that spotting a cuckoo at the nest did not increase the rejection rate of parasitic eggs, even if hosts saw the cuckoo repeatedly. Hosts instead used the level of mimicry in the background color for cuckoo egg rejection. Since not every visit by the cuckoo leads to parasitism, seeing the brood parasite may not be a reliable enough cue for the host. Therefore, our results suggest that the sight of a cuckoo at the nest may not have as severe consequences for it as previously thought.