Skip to main content

Free Content Genetic differentiation despite teleplanic larval dispersal: Allozyme variation in sipunculans of the Apionsoma misakianum species-complex

Download Article:
 Download
(PDF 211.7373046875 kb)
 
We examined the genetic evidence for dispersal in the sipunculan Apionsoma misakianum (Ikeda 1904) by analysis of allozymes (using a total of nine polymorphic loci) in larval and adult samples. Genotypes of adults reared from late-stage larvae collected from the Florida Current were compared with genotypes of adults from three locations: eastern central Florida, the Florida Keys and the Bahamas. Genetic differences were found between individuals from the southern localities and the majority of specimens from the northern locality. The multilocus genotypes of the specimens reared from larvae of the Florida Current were characteristic of specimens from the Florida Keys and the Bahamas. Despite evidence for larval influx northward into the central-Florida area via the Florida Current, the southern genotypes were present in only a few adults collected (4.5%) at a northern site, with no indication of "hybrids" occurring between northern and southern genotype based on allozymes (i.e., heterozygotes). Furthermore, genetic separation of the northern and southern genotypes coincides with a faunal boundary noted for other species.

48 References.

No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 1999-09-01

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