Skip to main content

Free Content Settlement sites, survival and effects on benthos of an introduced reef-building polychaete in a SW Atlantic coastal lagoon

Download Article:
 Download
(PDF 563.9931640625 kb)
 

Abstract:

Ficopomatus enigmaticus is a cosmopolitan, reef-building serpulid polychaete introduced to the Mar Chiquita coastal lagoon, Argentina, before 1970. Today reefs of this species cover approximately 80% of the lagoon. Each reef is up to 4 m in diameter and 0.5 m high and is formed of thousands of calcareous tubes of F. enigmaticus. We investigated through experiments and observation the selection of settlement substrate by F. enigmaticus larvae and their effect on the benthic community. Settlement sites were primarily shells of the gastropod Adelomelon brasiliana and secondarily the bivalves Mactra isabelleana and Tagelus plebeius, but long-term survival was mainly found in the inner area of A. brasiliana shells, suggesting the importance of refuge. Large population of the amphipod Melita palmata and the gastropod Littoridina parchappi lived between the F. enigmaticus tubes. The most common benthic polychaete species inhabiting the sediment around the reefs showed variation in density (Heteromastus similis and Laeonereis acuta decreased whereas Nephtys fluviatilis increased) as the result of distance from the reefs. The abundance of adult crabs (Cyrtograpsus angulatus) was much higher underneath the reefs than in the sediment around the reefs. Reefs largely increased habitat structure, modifying the abundance of species that inhabit in shelters and changed the pattern of distribution of soft-bottom species.

Document Type: Research Article

Publication date: 2000-07-01

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 ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree 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