Skip to main content

Free Content An Examination of Interspecific Territoriality in the Dusky Damselfish, Eupomacentrus Dorsopunicans Poey

Download Article:
 Download
(PDF 391.98046875 kb)
 

Abstract:

Interspecific territorial behavior in the dusky damselfish, Eupomacentrus dorsopunicans, was examined at St. Croix, U.S.V.I. Territory size was not constant, but varied as a function of the intruding species. Larger territories were defended against diurnally active fishes, while nocturnally active fishes only rarely elicited agonistic responses from E. dorsopunicans. A positive correlation was found between the size of the territory defended and the intruder's dietary overlap with E. dorsopunicans, although when only diurnal fishes were considered, this relationship was no longer statistically significant. Since nocturnal fishes on western Atlantic coral reefs have relatively low trophic overlap with the dusky damselfish, it was not possible to completely separate the effects of trophic similarity from activity pattern. Removal of dusky damselfish from their territories resulted in a rapid reduction in algal biomass within the territory owing to heavy grazing by acanthurids, scarids and labrids. These results indicate that one function of territorial behavior in E. dorsopunicans is the protection of food resources. The possible importance of this behavior in the protection of shelter sites will be examined in a future study.

Document Type: Research Article

Publication date: 1981-01-01

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more