Resumo
Species composition and abundance of fishes that escaped from aquaculture facilities during catastrophic flooding in the Paranapanema and Tibagi rivers, in January, 1997 was estimated. In all , 1,292,000 adult individuais belonging to 11 species and 1 hybrid, were introduced into these rivers; only one species was native. The disaster is attributed to the illegal occupation of the river banks, and the non observance of standard measures designed to avoid escapement.
Species introduction; Tibagi river; Paranapanema; river
Species introduction; Tibagi river; Paranapanema; river
COMUNICAÇÃO CIENTÍFICA
Introdução de espécies de peixes por escapes acidentais de tanques de cultivo em rios da Bacia do Rio Paraná, Brasil
Fish species introduction by accidental escape from aquaculture in the high Paraná River Basin
Mário L. OrsiI; Ângelo A. AgostinhoII
IDepartamento Biologia Animal e Vegetal, Universidade Estadual de Londrina. 86051-970 Londrina, Paraná, Brasil. E-mail: orsi@npd.uel.br
IINupelia/DBI, Universidade Estadual de Maringá. 87020-900 Maringá, Paraná, Brasil. E-mail: agostinhoaa@uem.br
ABSTRACT
Species composition and abundance of fishes that escaped from aquaculture facilities during catastrophic flooding in the Paranapanema and Tibagi rivers, in January, 1997 was estimated. In all , 1,292,000 adult individuais belonging to 11 species and 1 hybrid, were introduced into these rivers; only one species was native. The disaster is attributed to the illegal occupation of the river banks, and the non observance of standard measures designed to avoid escapement.
Key words: Species introduction, Tibagi river, Paranapanema, river
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Full text available only in PDF format.
AGRADECIMENTOS. Agradecemos à Cooperativa Agrícola de Rolândia -fábrica de rações, sem a qual não seria possível realizar o trabalho, a Ailton Demito (COROL), a Edson Santana da Silva (UEL) e a Oscar Akio Shibatta (UEL), pela ajuda prestada na tomada de dados e sugestões no trabalho.
Recebido em 11.XII.1997, aceito em 06.IV.1999.
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- Bolen, E.G. & W.L. Robinson. 1995. Wildlife ecology and managment. New Jersey, Prentice Hall, 620p.
- Courtenay, W.R. & J.D. Williams. 1992 Dispersal of exotic species from aquaculture sources, with emphasis on freshwater fishes, p.49-81. In: A. Rosenfield & R. Mann (Ed.). Dispersal of living organism into aquatic ecosystems. College Park, MA, Maryland Sea Grant College Publication, 471p.
- Enger, E.D.; J.R. Kormelink; B.F. Smith; R.J. Smith. 1989. Environmental science: the study of interrelationships. Dubuque, Iowa, WM. C. Brown Publishers, 540p.
- Welcomme, R.L. 1988. International introductions of inland aquatic species. Rome, FAO Fish. Tec. Papers, no. 294.
Datas de Publicação
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Publicação nesta coleção
01 Jul 2009 -
Data do Fascículo
Jun 1999
Histórico
-
Aceito
06 Abr 1999 -
Recebido
11 Dez 1997
