Skip Navigation


Behavioral Ecology Advance Access originally published online on March 2, 2005
Behavioral Ecology 2005 16(3):640-648; doi:10.1093/beheco/ari036
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow Lay Summary
Right arrow All Versions of this Article:
16/3/640    most recent
ari036v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (10)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Hansen, E. A.
Right arrow Articles by Closs, G. P.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Hansen, E. A.
Right arrow Articles by Closs, G. P.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2005. Published by Oxford University Press on behalf of the International Society for Behavioral Ecology. All rights reserved. For permissions, please e-mail: journals.permissions@oupjournals.org

Diel activity and home range size in relation to food supply in a drift-feeding stream fish

Eric A. Hansen and Gerard P. Closs

Department of Zoology, University of Otago, P.O. Box 56, Dunedin, New Zealand

Address correspondence to E.A. Hansen. E-mail: eric.hansen{at}stonebow.otago.ac.nz.

Individuals within a species often compete for resources in both space and time. In dominance hierarchies individuals with the greatest competitive ability will occupy prime locations during optimal periods. We compared spatial and temporal use of habitat, aggression, and feeding success among giant kokopu (Galaxias argenteus) in dominance hierarchies under normal and reduced food supply. Under normal food supply conditions dominant fish were predominantly nocturnal and maintained large home ranges at night. Conversely, subdominant fish were diurnal and occupied large home ranges by day but were generally not observed at night. When the food supply was limited, the utilization of pools was determined by social rank. Dominant fish from each pool increased diurnal activity, home range size, aggressiveness, and the capture of food items offered by day while simultaneously reducing the spatial and temporal activity and habitat use of subdominant fish. These results indicate that behavioral changes in large dominant fish influence and reduce the amount of resources available to subdominant fish.

Key words: dominance, Giant kokopu, social rank, spatial use, temporal activity.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Behav EcolHome page
E. A. Hansen and G. P. Closs
Long-term growth and movement in relation to food supply and social status in a stream fish
Behav. Ecol., May 1, 2009; 20(3): 616 - 623.
[Abstract] [Full Text] [PDF]

Home page
 Behav EcolHome page
L. Pizzatto, T. Child, and R. Shine
Why be diurnal? Shifts in activity time enable young cane toads to evade cannibalistic conspecifics
Behav. Ecol., September 1, 2008; 19(5): 990 - 997.
[Abstract] [Full Text] [PDF]

Home page
 Behav EcolHome page
C. M. Murray, L. E. Eberly, and A. E. Pusey
Foraging strategies as a function of season and rank among wild female chimpanzees (Pan troglodytes)
Behav. Ecol., November 1, 2006; 17(6): 1020 - 1028.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.