Phenotypic and molecular variation in the green and black poison-dart frog Dendrobates auratus (Anura: Dendrobatidae) from Costa Rica / Variación fenotípica y molecular en la rana dardo venenoso verde y negra Dendrobates auratus (Anura: Dendrobatidae) de Costa Rica
Rev. biol. trop
;
57(supl.1): 312-321, nov. 2009. graf, tab
Article
in English
| LILACS, SaludCR
| ID: lil-637945
ABSTRACT
The green and black poison-dart frog Dendrobates auratus exhibits high intraspecific variation in hue color and pattern throughout its range, making it a very popular species in the pet trade. We analyzed the correspondence between color variation and molecular variation of D. auratus from Costa Rica using RAPD analysis. Twenty-six random primers were analyzed for variation in 99 individuals from seven populations. Color pattern was scored from digital images of the dorsal and ventral views. In general, frogs from the Caribbean coast had significantly more light coloration than black color but cannot be grouped by population based only on hue pattern. Only 3 RAPD primers were found to be polymorphic, representing a total of 16 loci. Most of the molecular variation encountered here occurs within populations, thus making unclear the degree of population structure and differentiation. Further examination of COI mtDNA sequences from our samples also supports these results. Partial Mantel correlations suggested that the pattern of molecular variation is not congruent with the variation in color pattern in this species, an outcome that is discussed in terms of phenotypic evolution. Rev. Biol. Trop. 57 (Suppl. 1) 313-321. Epub 2009 November 30.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Ranidae
/
Ecosystem
/
Costa Rica
Type of study:
Controlled clinical trial
Country/Region as subject:
Central America
/
Costa Rica
Language:
English
Journal:
Rev. biol. trop
Journal subject:
Biology
/
Tropical Medicine
Year:
2009
Type:
Article
Affiliation country:
Costa Rica
/
United States
Institution/Affiliation country:
Instituto Clodomiro Picado/CR
/
University of Texas/US
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