Notas experimentales sobre <i>Gambusia cf. affinis</i> (Osteichthyes: poeciliidae) en Argentina

G. affinis is a native poecilid of North America. It was introduced in Argentina in 1945, since then G. affinis has established as stable populations in several provinces like Cordoba and Buenos Aires up to 35º S approximately. On this work, three different kinds of experiences have been made to obt...

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Autores principales: González Naya, M. J., Gómez, Sergio Enrique, Ramírez, L.
Formato: Articulo
Lenguaje:Español
Publicado: 2006
Materias:
Ciencias Naturales
Argentina
Poecilia
exotic fish, poeciilids, bioassays
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/69451
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-69451
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Naturales
Argentina
Poecilia
exotic fish, poeciilids, bioassays
spellingShingle Ciencias Naturales
Argentina
Poecilia
exotic fish, poeciilids, bioassays
González Naya, M. J.
Gómez, Sergio Enrique
Ramírez, L.
Notas experimentales sobre <i>Gambusia cf. affinis</i> (Osteichthyes: poeciliidae) en Argentina
topic_facet Ciencias Naturales
Argentina
Poecilia
exotic fish, poeciilids, bioassays
description G. affinis is a native poecilid of North America. It was introduced in Argentina in 1945, since then G. affinis has established as stable populations in several provinces like Cordoba and Buenos Aires up to 35º S approximately. On this work, three different kinds of experiences have been made to obtain some ecophysiological features of this exotic fish. The results were compared with those of Cnesterodon decemmaculatus, a native poecilid widely used in bioassays in Argentina. Some comments were made upon the morphological and pigmentation aspects of both species. The incipient lethal level of pH (96 h) was estimated at 10.3. The average swimming capacity using the Fatigue Time technique with a constant velocity of 6.8 cm.s-1 was 46.6 min and the lethal temperature obtained by means of the Critical Maximum technique was 41.21 ºC. All the analyzed parameters were larger than those noted for C. decemmaculatus. Both species showed a significant loss in their pigmentation when they were exposed to light or high temperatures. However, there are not any references of presence for G. cf. affinis in Patagonia nor in Pampasian lagunas, it has shown to be more eurithopic than C. decemmaculatus suggesting that it fulfills all the requirements to be found in these regions together with other Cyprinodontiforms.
format Articulo
Articulo
author González Naya, M. J.
Gómez, Sergio Enrique
Ramírez, L.
author_facet González Naya, M. J.
Gómez, Sergio Enrique
Ramírez, L.
author_sort González Naya, M. J.
title Notas experimentales sobre <i>Gambusia cf. affinis</i> (Osteichthyes: poeciliidae) en Argentina
title_short Notas experimentales sobre <i>Gambusia cf. affinis</i> (Osteichthyes: poeciliidae) en Argentina
title_full Notas experimentales sobre <i>Gambusia cf. affinis</i> (Osteichthyes: poeciliidae) en Argentina
title_fullStr Notas experimentales sobre <i>Gambusia cf. affinis</i> (Osteichthyes: poeciliidae) en Argentina
title_full_unstemmed Notas experimentales sobre <i>Gambusia cf. affinis</i> (Osteichthyes: poeciliidae) en Argentina
title_sort notas experimentales sobre <i>gambusia cf. affinis</i> (osteichthyes: poeciliidae) en argentina
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/69451
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AT ramirezl notasexperimentalessobreigambusiacfaffinisiosteichthyespoeciliidaeenargentina
bdutipo_str Repositorios
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