Parent-offspring conflict and the coordination of siblings in gulls.
Offspring solicit food from their parents by begging behaviours. Studies on birds suggest that these displays are 'honest signals of need' and adults provide food according to the begging level. However, siblings may compete for parental resources and the begging intensity is expected to c...
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ftpubmed:oai:pubmedcentral.nih.gov:1810040 2023-05-15T18:49:33+02:00 Parent-offspring conflict and the coordination of siblings in gulls. Mathevon, N Charrier, I 2004-05-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1810040 http://www.ncbi.nlm.nih.gov/pubmed/15252967 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1810040 http://www.ncbi.nlm.nih.gov/pubmed/15252967 Research Article Text 2004 ftpubmed 2013-08-31T18:10:07Z Offspring solicit food from their parents by begging behaviours. Studies on birds suggest that these displays are 'honest signals of need' and adults provide food according to the begging level. However, siblings may compete for parental resources and the begging intensity is expected to change with brood size. Here, we show that in the black-headed gull (Larus ridibundus) an increase of the numbers of siblings can result in a decrease of individual begging cost through nestlings' synchronized signalling. This is in accordance with some mathematical models. As parents respond to the total solicitation emerging from the nest, the probability to get food increases with the number of chicks begging together. The more siblings there are, the more they coordinate their begging while decreasing the number of individual begging bouts. Intra-brood synchronization of begging enables chicks to reduce their effort and hence exerting an important role in parental-offspring negotiation. Text Black-headed Gull Larus ridibundus PubMed Central (PMC) |
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Research Article Mathevon, N Charrier, I Parent-offspring conflict and the coordination of siblings in gulls. |
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Research Article |
description |
Offspring solicit food from their parents by begging behaviours. Studies on birds suggest that these displays are 'honest signals of need' and adults provide food according to the begging level. However, siblings may compete for parental resources and the begging intensity is expected to change with brood size. Here, we show that in the black-headed gull (Larus ridibundus) an increase of the numbers of siblings can result in a decrease of individual begging cost through nestlings' synchronized signalling. This is in accordance with some mathematical models. As parents respond to the total solicitation emerging from the nest, the probability to get food increases with the number of chicks begging together. The more siblings there are, the more they coordinate their begging while decreasing the number of individual begging bouts. Intra-brood synchronization of begging enables chicks to reduce their effort and hence exerting an important role in parental-offspring negotiation. |
format |
Text |
author |
Mathevon, N Charrier, I |
author_facet |
Mathevon, N Charrier, I |
author_sort |
Mathevon, N |
title |
Parent-offspring conflict and the coordination of siblings in gulls. |
title_short |
Parent-offspring conflict and the coordination of siblings in gulls. |
title_full |
Parent-offspring conflict and the coordination of siblings in gulls. |
title_fullStr |
Parent-offspring conflict and the coordination of siblings in gulls. |
title_full_unstemmed |
Parent-offspring conflict and the coordination of siblings in gulls. |
title_sort |
parent-offspring conflict and the coordination of siblings in gulls. |
publishDate |
2004 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1810040 http://www.ncbi.nlm.nih.gov/pubmed/15252967 |
genre |
Black-headed Gull Larus ridibundus |
genre_facet |
Black-headed Gull Larus ridibundus |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1810040 http://www.ncbi.nlm.nih.gov/pubmed/15252967 |
_version_ |
1766243155359825920 |