A polymorphism in oocyte pigmentation in natural populations of the glass frog espadarana prosoblepon (Centrolenidae)

María J. Salazar-Nicholls, Francisca Hervas, Sofía I. Muñoz-Tobar, Ana Belén Carrillo, Heisel Ricaurte, Santiago R. Ron, Andrés Romero-Carvajal

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

The adaptive role of amphibian oocyte melanic pigmentation and its molecular control are still elusive. Here we present evidence of a polymorphism in egg pigmentation in the emerald glass frog Espadarana prosoblepon. In Ecuadorian natural populations of this species, females can lay dark brown or pale eggs that develop into normal pigmented tadpoles and adults. This trait is a sex-limited phenotype which is inherited like a recessive allele that we called pale eggs like (pel). The pel phenotype is exclusive of oocyte cortical melanic pigmentation, which is reduced in comparison to wild type (wt) dark pigmented oocytes. Consequently, pel early embryos are paler in appearance, with reduced melanic pigmentation distributed to early blastomeres and embryonic ectoderm. However, these embryos form normal melanocyte derived pigmentation. Finally, we discuss the origin of this polymorphism and propose the use of E. prosoblepon as a model to study the adaptive role of egg pigmentation.

Idioma originalInglés
Páginas (desde-hasta)333-344
Número de páginas12
PublicaciónInternational Journal of Developmental Biology
Volumen65
N.º5-6
DOI
EstadoPublicada - 20 ago. 2020

Nota bibliográfica

Publisher Copyright:
© 2020 UPV/EHU Press Printed in Spain.

Huella

Profundice en los temas de investigación de 'A polymorphism in oocyte pigmentation in natural populations of the glass frog espadarana prosoblepon (Centrolenidae)'. En conjunto forman una huella única.

Citar esto