English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Ecologically determined natal philopatry within a colony of great cormorants.

Schjørring, S. (2001). Ecologically determined natal philopatry within a colony of great cormorants. Behavioral Ecology, 12(3), 287-294.

Item is

Files

show Files
hide Files
:
Schjörring_ 2001.pdf (Publisher version), 612KB
 
File Permalink:
-
Name:
Schjörring_ 2001.pdf
Description:
-
OA-Status:
Visibility:
Restricted (Max Planck Institute for Evolutionary Biology, MPLM; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Schjørring, Solveig1, Author           
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

Content

show
hide
Free keywords: great comorants; habitat selection; kin selection; natal dispersal distance; Phalacrocorax carbo sinensis; philopatry
 Abstract: Dispersal patterns of individuals within populations have implications for the social and genetic structure of local populations. Knowing what factors determine individual dispersal behavior is essential for predicting how the population structure will be influenced by environmental and demographic changes. In this study, I investigated whether the settling pattern of individuals breeding for the first time a colony of great cormorants was determined by ecological or genetic factors. Furthermore, I examined the possible effects of age and gender. First-time breeders that came back to breed within their natal colony showed strong philopatry toward their natal breeding sites. Because of the simultaneous strong fidelity of breeders toward their former breeding sites, this caused kin to cluster to some extent around the natal site. However, genetic factors (attraction to close kin) are less likely to explain natal philopatry than ecological ones (attraction to the natal site itself). Younger first-time breeders were more philopatric than older ones, in accordance with a decrease in the predictability of the quality of breeding sites with increasing time lags. Furthermore, males dispersed farther from the natal breeding site than females. This result is contrary to what is generally expected for a breeding system where the male is dependent on a breeding territory for mate acquisition I suggest that this sex difference could arise because first-time breeding males are constrained from settling in the natal site by interference competition with older males or because males are better informed about alternative breeding sites of high quality within the colony

Details

show
hide
Language(s): eng - English
 Dates: 2001-05
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 116307
Other: 1957/S 37615
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Behavioral Ecology
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 12 (3) Sequence Number: - Start / End Page: 287 - 294 Identifier: ISSN: 1045-2249