Document Detail


Developmental origin of a major difference in sensory patterning between zebrafish and bluefin tuna.
MedLine Citation:
PMID:  23189756     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The posterior lateral line system (PLL) of teleost fish comprises a number of mechanosensory organs arranged in defined patterns on the body surface. Embryonic patterns are largely conserved among teleosts, yet adult patterns are highly diverse. Although changes in pattern modify the perceptual abilities of the system, their developmental origin remains unknown. Here we compare the processes that underlie the formation of the juvenile PLL pattern in Thunnus thynnus, the bluefin tuna, to the processes that were elucidated in Danio rerio, the zebrafish. In both cases, the embryonic PLL comprises five neuromasts regularly spaced along the horizontal myoseptum, but the juvenile PLL comprises four roughly parallel anteroposterior lines in zebrafish, whereas it is a simple dorsally arched line in tuna fish. We examined whether this difference involves evolutionary novelties, and show that the same mechanisms mediate the transition from embryonic to juvenile patterns in both species. We conclude that the marked difference in juveniles depends on a single change (dorsal vs. ventral migration of neuromasts) in the first days of larval life.
Authors:
Alain Ghysen; Christine Dambly-Chaudière; Denis Coves; Fernando de la Gandara; Aurelio Ortega
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Evolution & development     Volume:  14     ISSN:  1525-142X     ISO Abbreviation:  Evol. Dev.     Publication Date:    2012 Mar-Apr
Date Detail:
Created Date:  2012-11-28     Completed Date:  2013-02-18     Revised Date:  2013-07-11    
Medline Journal Info:
Nlm Unique ID:  100883432     Medline TA:  Evol Dev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  204-11     Citation Subset:  IM    
Affiliation:
INSERM U710, Montpellier, France. alain.ghysen@univ-montp2.fr
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MeSH Terms
Descriptor/Qualifier:
Animals
Biological Evolution
Larva / anatomy & histology,  growth & development
Lateral Line System / anatomy & histology,  growth & development*
Tuna / anatomy & histology,  growth & development*
Zebrafish / anatomy & histology,  growth & development*
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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