Skip to main content

Free Content Field Observations on the Behavior and Ecology of the Orangethroat Pikeblenny, Chaenopsis alepidota, in the Sea of Cortez

Download Article:
 Download
(PDF 1714.646484375 kb)
 

Abstract:

Patterns of space use and defence by the pikeblenny, Chaenopsis alepidota, were studied over a 13-month period in 1977–1978 for a population inhabiting a sand/rubble plain in a small bay along the Baja California coast of the Sea of Cortez, The abundance of C. alepidota varied widely over the year, as did its apparent mobility and territorial behavior. Analysis of size-frequency distributions suggests that in part the change in abundance reflects recruitment and rapid growth of a species that is largely annual. During periods of low population density, resources appeared to be abundant and individuals appeared to roam widely and were largely non-aggressive, whereas during a period of high density, resources appeared to be in shorter supply, individuals were more site-attached and the incidence of agonistic interactions increased markedly. The apparent short generation time of the species suggests population densities vary widely among habitats and years (reflecting recruitment variability), with concomitant shifts in a labile social system. The emphasis in the literature on vigorous territoriality in pikeblennies may reflect a bias due to their conspicuousness during periods of high population density.

Document Type: Research Article

Publication date: 1997-07-01

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