Free Content An Association of a Polychaete, Branchiosyllis Exilis with an Ophiuroid, Ophiocoma Echinata, in Panama

 Download
(PDF 1,104.6kb)
 
Download Article:

Abstract:

On the Caribbean coast of Panama Branchiosyllis exilis (Gravier) is associated with Ophiocoma echinata (Lamarck). They have not been found in symbiosis in other localities although both species are widespread. B. exilis was not collected on the ophiuroid species sympatric with O. echinata, but we speculate that it may associate with other hosts elsewhere in its range. Larger ophiuroids are more often infested than smaller specimens. In the majority of infestations a single polychaete is found near the mouth or on the arm on the ventral surface of the ophiuroid. The consistent occurrence of one polychaete per host may be an indication of aggression between individuals of B. exilis. The polychaete freely enters and leaves the mouth of O. echinata and may steal food captured by the ophiuroid. The incidence of infestation varies at different collecting sites and seasonally at a single locality. It is possible that fluctuations in the incidence of infestation are related to seasonal stress and mortality of B. exilis, or are effected through changes in the density of the host population.

Document Type: Research Article

Publication date: July 1, 1982

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
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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