Free Content An Amphinomid Worm Predator of the Crown-of-Thorns Sea Star and General Predation on Asteroids in Eastern and Western Pacific Coral Reefs

 Download
(PDF 2,327.3 kb)
 
Download Article:

Abstract:

Pherecardia striata, an amphinomid polychaete worm, is abundant in Panama on Pacific pocilloporid coral reefs where it feeds on live and injured asteroids (Acanthaster planci and phanerozonic sea stars). Pherecardia was not present on coral reefs in Samoa and Guam. Pherecardia has a varied diet, including red algae, detritus, crustaceans, polychaete worms, molluscs, sea stars and other items; laboratory observations indicate that the worm locates its prey by weak chemoreception, and that it prefers crustaceans over most other prey. The diversity of species of animals feeding on sea stars (at least 12 species) in Panama was higher than in Guam and Samoa. Attack rates by predators and scavengers were also higher in Panama compared with Guam and Samoa. Disintegration rates of dead Acanthaster were highest in Panama (4 days versus 8 days in Guam), probably a result of the intensity of predation and scavenging there. No evidence exists for Acanthaster outbreaks in Panama, where Pherecardia and a shrimp (Hymenocera pieta) are abundant and together seem to keep the number of sea stars at a low level.

Document Type: Research Article

Publication date: July 1, 1984

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