Low levels of aluminium causing death of brown trout (salmo trutta fario, L.) in a Swiss alpine lake

Dietrich, Daniel R.; Schlatter, Christian

Low levels of aluminium causing death of brown trout (salmo trutta fario, L.) in a Swiss alpine lake

Dateien

Low_levels_of_aluminium_causing_death_of_brown_trout.pdfGröße: 1.31 MBDownloads: 364

Datum

1989

Autor:innen

Dietrich, Daniel R.

Schlatter, Christian

Publikationstyp

Zeitschriftenartikel

unikn.publication.listelement.citation.prefix.version.undefined

Aquatic sciences. 1989, 51(4), pp. 279-295. ISSN 1015-1621. eISSN 1420-9055. Available under: doi: 10.1007/BF00877172

Zusammenfassung

Several attempts to stock fish in acidified alpine lakes have so far proven unsuccessful. In an effort to investigate the problems associated with the stocking of fish, the Swiss alpine Lake Laiozza was chosen for experimentation. An analysis of Lake Laiozza water revealed low ion concentrations (0.5 mg Ca/L, 0.13 mg Na/L, 0.02 mg Cl/L), moderate aluminium concentrations (121 ± 28 µg Al/L), and a moderately low pH (5.41 ± 0.21). As in common practice, one and two year old brown trout were exposed in a closed keep-net in Lake Laiozza. The water of Lake Laiozza proved to be acutely toxic to the fish. Mucous clogging of the gills, gill epithelial damage, plasma electrolyte losses, and high hematocrits were the predominant symptoms observed. All symptoms observed are typical for an acute intoxication with aluminium. This stands in contrast to the generally accepted view that aluminium concentrations lower than 200 µg Al/L should not be toxic to brown trout at a pH 5.4. The low Na and Cl and low Ca concentrations in the Lake Laiozza water seem to have rendered the fish much more susceptible to aluminium intoxication.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

Aluminium, acid water, brown trout, toxicity, stocking, alpine lakes, Lake Laiozza

Zitieren

ISO 690

DIETRICH, Daniel R., Christian SCHLATTER, 1989. Low levels of aluminium causing death of brown trout (salmo trutta fario, L.) in a Swiss alpine lake. In: Aquatic sciences. 1989, 51(4), pp. 279-295. ISSN 1015-1621. eISSN 1420-9055. Available under: doi: 10.1007/BF00877172

BibTex

@article{Dietrich1989level-8394,
  year={1989},
  doi={10.1007/BF00877172},
  title={Low levels of aluminium causing death of brown trout (salmo trutta fario, L.) in a Swiss alpine lake},
  number={4},
  volume={51},
  issn={1015-1621},
  journal={Aquatic sciences},
  pages={279--295},
  author={Dietrich, Daniel R. and Schlatter, Christian}
}

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    <dcterms:abstract xml:lang="eng">Several attempts to stock fish in acidified alpine lakes have so far proven unsuccessful. In an effort to investigate the problems associated with the stocking of fish, the Swiss alpine Lake Laiozza was chosen for experimentation. An analysis of Lake Laiozza water revealed low ion concentrations (0.5 mg Ca/L, 0.13 mg Na/L, 0.02 mg Cl/L), moderate aluminium concentrations (121 ± 28 µg Al/L), and a moderately low pH (5.41 ± 0.21). As in common practice, one and two year old brown trout were exposed in a closed keep-net in Lake Laiozza. The water of Lake Laiozza proved to be acutely toxic to the fish. Mucous clogging of the gills, gill epithelial damage, plasma electrolyte losses, and high hematocrits were the predominant symptoms observed. All symptoms observed are typical for an acute intoxication with aluminium. This stands in contrast to the generally accepted view that aluminium concentrations lower than 200 µg Al/L should not be toxic to brown trout at a pH 5.4. The low Na and Cl and low Ca concentrations in the Lake Laiozza water seem to have rendered the fish much more susceptible to aluminium intoxication.</dcterms:abstract>
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