Free Content What controls the type of larval development? Summary statement for the evolution session

 Download
(PDF 492kb)
 
Download Article:

Abstract:

Length of the planktonic larval period can determine dispersal distances of sedentary benthic animals and thereby influence genetic variation within and among subpopulations, accumulation or elimination of deleterious recessive genes, and adaptation to local conditions. These microevolutionary changes, together with possible differences in geographic range, may influence speciation and extinction rates. If length of planktonic period is important to evolution, then how does length of planktonic period evolve?

Types of embryonic and larval development (benthic or planktonic, feeding or non-feeding) determine duration of the planktonic period. Therefore conditions controlling types of larval development ultimately control evolutionary processes for descendent lineages insofar as dispersal influences these processes. Here 1 list 10 hypotheses on persistence of types of development and transitions between types of development. These conditions include trades between rate of early development, rate of early growth, and risks from benthic and planktonic predators. The size of adults and larvae, body plans of adults, body plans and feeding mechanisms of larvae, and internal fertilization determine the form of these trades. Transitions between types of development are restricted by a bias against recovery of a feeding larval stage and stabilizing selection for local adaptive optima. Advantages of long distance dispersal, differences in reproductive effort, and adaptations for larval settlement have little effect on type of larval development and duration of planktonic periods.

Document Type: Research Article

Publication date: September 1, 1986

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