Free Content Some examples of the contribution of planktonic larval stages to the biology and ecology of polychaetes

 Download
(PDF 499.7 kb)
 
Download Article:

Abstract:

There are many fields of research into adult benthic polychaetes where the study of their planktonic larvae is beneficial. These include the reproductive activity of adults from the larval period, the identification of hydrological and climatic conditions for benthic life, the interannual fluctuations of benthic populations, the transfer of energy between plankton and benthos, settlement conditions at the benthic stage, variations in reproductive patterns with latitude, biogeographic implications of larval dispersion, larvae and evolutionary processes. It is clear from this non-exhaustive list that, in dealing with planktonic larvae, the benthic part of the life cycle associated with development in the sediment or on hard substrates of the benthos is also involved. Consequently, results can be obtained over the whole life cycle by studying larvae. Examples of such integration are provided which also reflect a change in hitherto accepted thinking. Three points are developed for polychaetes: (1) latitudinal variations in the pattern of reproduction; (2) contribution of planktonic larvae to the question of the existence of cosmopolitan species; (3) reproduction at great depth. A new picture of the larval stage is evolving: the 'new' larva is not a passive object, and it covers an area that is probably more limited than previously thought; its characteristic features are connected with the other parts of the life cycle. Finally, it is suggested that planktonic larvae, even those with a strong potential for dispersion, are not destined for widespread dissemination; they occupy a limited area, which results either from a reduction in their dispersion potential, or from control by the physical structures of the surrounding water masses.

Document Type: Research Article

Publication date: July 1, 2000

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