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Two endemic and endangered fishes, Poecilia sulphuraria (Alvarez, 1948) and Gambusia eurystoma Miller, 1975 (Poeciliidae, Teleostei) as only survivors in a small sulphidic habitat


Tobler, M; Riesch, R; Garcia de León, F J; Schlupp, I; Plath, M (2008). Two endemic and endangered fishes, Poecilia sulphuraria (Alvarez, 1948) and Gambusia eurystoma Miller, 1975 (Poeciliidae, Teleostei) as only survivors in a small sulphidic habitat. Journal of Fish Biology, 72(3):523-533.

Abstract

In the Banos del Azufre in Tabasco, Mexico, only two poeciliid species, Poecilia sulphuraria and
Gambusia eurystoma, were found in sulphidic habitats, whereas adjacent non-sulphidic habitats
were characterized by a vastly different fish community. Exposure of fishes to water from
a sulphidic spring showed that all species except for P. sulphuraria quickly lost motion control, probably because of the toxic properties of H2O It is suggested that the fishes endemic to the Banos del Azufre are highly specialized, and competitive exclusion allows them to survive only in this particular habitat type.

In the Banos del Azufre in Tabasco, Mexico, only two poeciliid species, Poecilia sulphuraria and
Gambusia eurystoma, were found in sulphidic habitats, whereas adjacent non-sulphidic habitats
were characterized by a vastly different fish community. Exposure of fishes to water from
a sulphidic spring showed that all species except for P. sulphuraria quickly lost motion control, probably because of the toxic properties of H2O It is suggested that the fishes endemic to the Banos del Azufre are highly specialized, and competitive exclusion allows them to survive only in this particular habitat type.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Zoology (former)
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Uncontrolled Keywords:adaptation; competitive exclusion; conservation biology; extremophiles; fish communities; hydrogen sulphide
Language:English
Date:2008
Deposited On:28 Mar 2008 15:34
Last Modified:05 Apr 2016 12:22
Publisher:Wiley-Blackwell
ISSN:0022-1112
Publisher DOI:10.1111/j.1095-8649.2007.01716.x
Permanent URL: http://doi.org/10.5167/uzh-2298

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