Abstract:
:Echinoderms represent a researchable subset of a dynamic larval evolutionary cosmos. Evolution of echinoderm larvae has taken place over widely varying time scales from the origins of larvae of living classes in the early Palaeozoic, approximately 500 million years ago, to recent, rapid and large-scale changes that have occurred within living genera within a span of less than a million years to a few million years. It is these recent evolutionary events that offer a window into processes of larval evolution operating at a micro-evolutionary level of evolution of discrete developmental mechanisms. We review the evolution of the diverse larval forms of living echinoderms to outline the origins of echinoderm larval forms, their diversity among living echinoderms, molecular clocks and rates of larval evolution, and finally current studies on the roles of developmental regulatory mechanisms in the rapid and radical evolutionary changes observed between closely related congeneric species.
journal_name
Heredity (Edinb)journal_title
Heredityauthors
Raff RA,Byrne Mdoi
10.1038/sj.hdy.6800866subject
Has Abstractpub_date
2006-09-01 00:00:00pages
244-52issue
3eissn
0018-067Xissn
1365-2540pii
6800866journal_volume
97pub_type
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