Cookies Policy

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

The Energetics of Feeding Territoriality in Juvenile Coho Salmon (Oncorhynchus Kisutch)

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

1. A foraging time budget was developed for territorial, nonterritorial, and floater fish. Territorial fish spend 76% of total time at the station, 3% free swimming, 13% feeding, and 5 % in agonistic activity. Floaters spend 18% of their time stationary swimming, 54% free swimming, 10% feeding, and 10% in agonistic activity. Nonterritorial fish spend 50% of their time stationary swimming, 43% free swimming, 2% feeding, and 3% in agonistic activity. 2. Stationary swimming tailbeat frequency for the floater (4.3) is significantly higher than for the territorial fish (3.6). The floater flight tailbeat frequency (8.2) is significantly higher than the territorial chase tailbeat frequency (6.9). Normal feed tailbeat frequencies are similar for all fish groups. Nonterritorial fish tend to move slowly (tailbeat frequency = 3.3) for all activities except normal feed. 3. The total activity budgets for territorial, floater, and nonterritorial fish are 1199, 1318, and 910 cal/kg/hr, respectively. The territorial fish uses 91 % as many calories as the floater fish and the nonterritorial fish utilizes 76% of the territorial budget. 4. Total agonistic costs represent 12 and 14% of the territorial and floater fish activity budgets, respectively. 5. The costs per feeding motion for the territorial, floater, and nonterritorial fish are 4.03, 4.91, 10.1 cal/motion, respectively. 6. The territorial fish has a net energy intake advantage over the floater, and probably over the nonterritorial fish, due to 1) reduced search costs, 2) reduced prey pursuit costs, and 3) reduced agonistic activity costs.

Affiliations: 1: Department of Biological Sciences, Simon Fraser University, Burnaby, B.C. Canada V5A 1S6


Full text loading...


Data & Media loading...

Article metrics loading...



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