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Genetic and environmental factors affecting melaninbased coloration in the amphisbaenian trogonophis wiegmanni

AuthorsRecio, Pablo; Rodríguez Ruiz, Gonzalo; García, Luis V. ; Martín Rueda, José
Issue Date2-Sep-2019
PublisherSocietas Europaea Herpetologica
CitationXX European Congress of Herpetology. Program and Abstracts. pág. 267 (2019)
AbstractTraditionally, melanin-based coloration was thought to occur only under genetic control. However, the literature is plenty of studies that suggest that melanin production may be also influenced by enviromental factors. Thus, melanin traits may change along the life of organisms. We first examined the relationships between proportions of melanin, body size, sex and age in the amphisbaenian Trogonophis wiegmanni from different populations of Chafarinas Islands. The results show a positive correlation between age and proportions of melanin, obtained by analyzing ventral and dorsal photographs of amphisbaenians. We also examined whether the characteristics and degree of contamination of the soil where these amphisbaenians live affected melanin-based coloration. We specifically tested the hypothesys that melanin pigments might facilitate heavy metal detoxification by sequestering metal ions in the inner parts of the body and transporting them outside when animals shed their skin. Results show that although amphisbaenians from soils with higher concentrations of heavy metals also have more metals in their shed skins, their melanin coloration seem to be independent of soil characteristics.
DescriptionPóster presntado en el XX European Congress of Herpetology, Milan, 2-6 September 2019. Program and Abstracts
Appears in Collections:(IRNAS) Libros y partes de libros
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