Model eggs fail to detect egg recognition in host populations after brood parasitism is relaxed.
Avian brood parasitism
Cuculus canorus
Parasitism pressure
Prinia inornata
Rejection motivation
Journal
Frontiers in zoology
ISSN: 1742-9994
Titre abrégé: Front Zool
Pays: England
ID NLM: 101231669
Informations de publication
Date de publication:
2020
2020
Historique:
received:
07
11
2019
accepted:
04
05
2020
entrez:
20
5
2020
pubmed:
20
5
2020
medline:
20
5
2020
Statut:
epublish
Résumé
Obligate brood parasites exert strong selective pressure on target hosts. In response, hosts typically evolve anti-parasitism strategies, of which egg recognition is one of the most efficient. Generally, host egg-recognition capacity is determined using model eggs. Previous studies have shown that some host species, which are capable of detecting parasite eggs, do not reject model eggs. However, it is unknown that whether the reaction to model eggs varies among distinct populations of the same host in relation to the degree of parasitism pressure. Here, we compared the rejection frequencies of model eggs and real eggs between mainland and island populations of the plain prinia ( Our results indicated that some factors affecting the decision to reject, such as rejection motivation, varied according to the degree of parasitism pressure, and thus influenced the frequency of egg rejection. Furthermore, our results suggested that model eggs should be used with caution in comparative studies of egg recognition abilities among species or populations subjected to different intensities of brood parasitism. That is, model eggs may fail to accurately detect egg recognition in host populations with little to no risk of parasitism.
Sections du résumé
BACKGROUND
BACKGROUND
Obligate brood parasites exert strong selective pressure on target hosts. In response, hosts typically evolve anti-parasitism strategies, of which egg recognition is one of the most efficient. Generally, host egg-recognition capacity is determined using model eggs. Previous studies have shown that some host species, which are capable of detecting parasite eggs, do not reject model eggs. However, it is unknown that whether the reaction to model eggs varies among distinct populations of the same host in relation to the degree of parasitism pressure.
RESULTS
RESULTS
Here, we compared the rejection frequencies of model eggs and real eggs between mainland and island populations of the plain prinia (
CONCLUSIONS
CONCLUSIONS
Our results indicated that some factors affecting the decision to reject, such as rejection motivation, varied according to the degree of parasitism pressure, and thus influenced the frequency of egg rejection. Furthermore, our results suggested that model eggs should be used with caution in comparative studies of egg recognition abilities among species or populations subjected to different intensities of brood parasitism. That is, model eggs may fail to accurately detect egg recognition in host populations with little to no risk of parasitism.
Identifiants
pubmed: 32426018
doi: 10.1186/s12983-020-00362-0
pii: 362
pmc: PMC7216403
doi:
Types de publication
Journal Article
Langues
eng
Pagination
14Informations de copyright
© The Author(s) 2020.
Déclaration de conflit d'intérêts
Competing interestsThe authors declare that they have no competing interests.
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