Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Parent-Offspring Feeding Relationship of Coots (Fulica Atra) in a Varying Environment

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Behaviour

Predictions derived from parental investment theory indicate that when the reproductive value of offspring decreases, parental investment should also decrease. If so, it should be expected that in adverse years, parental investment should be lower, given the lower survival prospects of chicks, than in more favourable years. I tested this by recording the frequency with which coots (Fulica atra) fed their chicks during a ten years period in a set of lakes that experienced considerable interannual variations in water levels. Contrary to the prediction, I found that during drier years, chicks were fed more frequently than during wetter years, in which self-feeding by chicks was more frequent. The reason for this could be that for coots the crucial factor for improving reproductive success is the quality rather than the quantity of chicks, and by increasing parental effort during more adverse years, the lower survival prospects of chicks could be attenuated. However, late in the breeding season, when fledging success is lower, chicks were fed by their parents less frequently than in the early breeding season. This could be related to a change in the cost/benefit ratio, itself independent of offspring quality, that parents experience when rearing chicks late in the season due to the start of plumage moult.

Affiliations: 1: Estación Biológica de Doñana, C.S.I.C., Apartado 1056, E-41080 Sevilla, Spain

10.1163/156853995X00180
/content/journals/10.1163/156853995x00180
dcterms_title,pub_keyword,dcterms_description,pub_author
6
3
Loading
Loading

Full text loading...

/content/journals/10.1163/156853995x00180
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/156853995x00180
Loading

Article metrics loading...

/content/journals/10.1163/156853995x00180
1995-01-01
2016-12-09

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
     
    Behaviour — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation