Increased host tolerance of multiple cuckoo eggs leads to higher fledging success of the brood parasite

C. Moskát, Márk E. Hauber, Jesús M. Avilés, Miklós Bán, R. Hargitai, Marcel Honza

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

In birds, multiple parasitism is the laying of two or more eggs by one or more parasitic females in a single host nest. Several cognitive mechanisms may explain how multiple parasitism could affect parasite egg discrimination by hosts. Rejection based on discordance predicts that multiple parasitism provides a perceptually more error-prone way for hosts to reject parasitism because more foreign eggs decrease the chance that any one egg is perceived as most dissimilar and recognized as foreign, unless parasite eggs are all similarly highly nonmimetic. In contrast, rejection based on clutch uniformity predicts that in multiple parasitism egg rejection is more error-proof if mimicry by parasite eggs is variable, because increased variation in egg appearance makes for easier egg rejection for hosts. Finally, true egg recognition, that is, rejection based on memory of the host's own eggs, predicts no differences in rejection rates from nests with single or multiple parasitism. We studied common cuckoos, Cuculus canorus, parasitizing a population of great reed warblers, Acrocephalus arundinaceus, in Hungary where multiple parasitism was frequent. Hosts rejected parasite eggs less often in nests with multiple parasitism than in nests with single parasitism. These observations were confirmed by experimental parasitism and support the rejection based on discordance hypothesis. As hosts were more likely to tolerate cuckoo eggs in nests with multiple parasitism, we found that multiple parasitism more than doubled cuckoos' reproductive output per host nest compared to single parasitism.

Original languageEnglish
Pages (from-to)1281-1290
Number of pages10
JournalAnimal Behaviour
Volume77
Issue number5
DOIs
Publication statusPublished - May 2009

Fingerprint

multiparasitism
fledging
parasitism
parasite
tolerance
egg
parasites
nests
nest
Cuculidae
egg rejection
Cuculus canorus
fledglings
mimicry (behavior)
Hungary
mimicry
reproductive performance

Keywords

  • brood parasitism
  • common cuckoo
  • Cuculus canorus
  • egg recognition
  • egg rejection
  • evictor chick
  • mimicry
  • reproductive success

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Increased host tolerance of multiple cuckoo eggs leads to higher fledging success of the brood parasite. / Moskát, C.; Hauber, Márk E.; Avilés, Jesús M.; Bán, Miklós; Hargitai, R.; Honza, Marcel.

In: Animal Behaviour, Vol. 77, No. 5, 05.2009, p. 1281-1290.

Research output: Contribution to journalArticle

Moskát, C. ; Hauber, Márk E. ; Avilés, Jesús M. ; Bán, Miklós ; Hargitai, R. ; Honza, Marcel. / Increased host tolerance of multiple cuckoo eggs leads to higher fledging success of the brood parasite. In: Animal Behaviour. 2009 ; Vol. 77, No. 5. pp. 1281-1290.
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