Publication Date:
2003-01-04
Description:
The pelagic larvae of many marine organisms can potentially disperse across hundreds of kilometers, but whether oceanographic or behavioral mechanisms can constrain dispersal over periods sufficient for the evolution of genetic differentiation remains unclear. Here, we concurrently examine larval duration and genetic population differentiation in a cleaner goby, Elacatinus evelynae, a member of the most species-rich genus of Caribbean reef fishes. Despite evidence for extended pelagic duration (21 days), populations of E. evelynae show strong genetic differentiation: among color forms (1.36 to 3.04% divergent at mitochondrial cytochrome b) and among island populations within color forms (Phi(ST) up to 70%). These results suggest that marine populations can remain demographically closed for thousands of generations despite extended larval duration, and that recognition cues such as color may promote speciation when geographic barriers are transient or weak.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taylor, Michael S -- Hellberg, Michael E -- New York, N.Y. -- Science. 2003 Jan 3;299(5603):107-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA. mtayL22@lsu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12511651" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Anthozoa
;
Atlantic Ocean
;
Bahamas
;
Caribbean Region
;
Color
;
Cytochrome b Group/genetics
;
*Ecosystem
;
Genetic Drift
;
Genetic Variation
;
*Genetics, Population
;
Geography
;
Haplotypes
;
Larva/growth & development/physiology
;
Mitochondria/genetics
;
Otolithic Membrane/growth & development
;
Perciformes/classification/*genetics/growth & development/*physiology
;
Phylogeny
;
Polymerase Chain Reaction
;
Reproduction
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink
