1 resultados encontrados para:
AUTOR: Tobler, Michael
|
1. |
|||
| *En hemeroteca, SIBE-San Cristóbal | |
| Hydrogen sulfide, bacteria, and fish: a unique, subterranean food chain | |
| Roach, Katherine A. ; Tobler, Michael (coaut.) ; Winemiller, Kirk O. (coaut.) ; | |
| Contenido en: Ecology Vol. 93, no. 11 (November 2011), p. 2056-2062 ISSN: 0012-9658 | |
|
Bibliotecas:
San Cristóbal
|
|
| Nota: | En hemeroteca, SIBE-San Cristóbal |
Facebook
Resumen en inglés
Photoautotrophs are generally considered to be the base of food webs, and habitats that lack light, such as caves, frequently rely on surface-derived carbon. Here we show, based on analysis of gut contents and stable isotope ratios of tissues (13C/12C and 15N/14N), that sulfur-oxidizing bacteria are directly consumed and assimilated by the fish Poecilia mexicana in a sulfide-rich cave stream in Tabasco state, Mexico. Our results provide evidence of a vertebrate deriving most of its organic carbon and nitrogen from in situ chemoautotrophic production, and reveals the importance of alternative energy production sources supporting animals in extreme environments.