Rhizosomichthys totae
Rhizosomichthys totae | ||||||||||||
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Systematics | ||||||||||||
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Scientific name of the genus | ||||||||||||
Rhizosomichthys | ||||||||||||
Miles , 1943 | ||||||||||||
Scientific name of the species | ||||||||||||
Rhizosomichthys totae | ||||||||||||
( Miles , 1942) |
Rhizosomichthys totae is a species of fish family of Slickheads and the only member of the monotypic genus Rhizosomichthys . The species is endemic to the Laguna de Tota (Lake Tota) in the Colombian Andes at an altitude of 3,015 metersand is believed to be extinct.
description
Rhizosomichthys totae reached a maximum length of 13.8 centimeters. The body was surrounded by seven fat pad segments.
Way of life
Apart from the fact that the fish was found in the deep areas of the Laguna de Tota, almost nothing is known about its way of life.
die out
Rhizosomichthys totae is only known of ten specimens collected between 1942 and 1957. The causes of extinction are presumably due to the re-enactment of the rainbow trout ( Oncorhynchus mykiss ) introduced in 1939 and to seismic activity, which led to a critical drop in the water level and thus to the mass extinction of entire fish populations.
literature
- Ross DE MacPhee: Extinctions in Near Time: Causes, Contexts, and Consequences . Kluwer Academic / Plenum Publishers, 1999. ISBN 0306460920 .
- Carl J. Ferraris: Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalog of siluriform primary types ( pdf, full text )
- Scott A. Schaefer & Luis Fernández: Redescription of the Pez Graso, Rhizosomichthys totae (Trichomycteridae), of Lago de Tota, Colombia, and Aspects of Cranial Osteology Revealed by Microtomography In: Copeia 2009 (Issue 3): S. 510-522. 2009. doi : 10.1643 / CI-08-186
- Mojica, JI, Usma, JS, Álvarez-León, R. and Lasso, CA 2012. Libro rojo de peces dulceacuícolas de Colombia. Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Bogotá.
Web links
- Rhizosomichthys totae inthe IUCN 2016-1 Red List of Threatened Species . Posted by: L. Mesa-Salazar & J. Mojica, 2016. Retrieved July 8, 2016.
- Rhizosomichthys totae on Fishbase.org (English)
- Illustration and description (Spanish) PDF online