Free Content Reproductive and Genetic Variation Among Caribbean Gorgonians: The Differentiation of Plexaura Kuna, New Species

 Download
(PDF 2,356.8 kb)
 
Download Article:

Abstract:

Ecophenotypic variation is common among many coral reef benthic invertebrates. However, there is no consensus on whether this variation is generated by genetically diverse and phenotypically plastic species or whether it is indicative of a more species-rich fauna than previously believed. Caribbean gorgon ian species exhibit extensive variation in their sclerites and based on the variation among populations in the genus Plexaura, we describe P. kuna, new species. The sclerites of P. kuna are most similar to those of Plexaura homomalla but differ both qualitatively and quantitatively from those of P. homomalla and other congeners. Analysis of randomly amplified polymorphic DNA (RAPDs) indicates that P. kuna has alleles that are absent in both Plexaura homomalla and Plexaura homomalla forma kiikenthali. The reproductive cycle of P. kuna in Panama differs from that of P. homomalla and there is only limited opportunity for hybridization between the two species. Genetic and reproductive data can serve as important adjuncts in establishing the existence of species-level differences between morphologically distinct populations.

Document Type: Research Article

Publication date: January 1, 1996

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