Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-8-22
pubmed:abstractText
One-summer-old graylings (Thymallus thymallus) were exposed for 6 days to water containing a mixture of 1 mg l(-1) Fe and 100 microg l(-1) Al at pH 5.5, with or without 15 mg l(-1) humic acid. A pH of 6.9 was used as a control. The experiment was performed at two test temperatures, 13 and 3 degrees C. After 1 week of exposure, half of the fish in the tank were taken for oxygen measurement and tissue sampling. The remaining half were maintained in metal-free water for a further week to assess their recovery at the two test temperatures. Fifty percent of the fish died under metal exposure at 13 degrees C, but none at 3 degrees C. Despite of the lack of mortalities at the lower temperature, surviving fish at both test temperatures suffered similar gill damage (adherence of lamellae), disturbances in ion regulation, increases in haematocrit value (Hct) and haemoglobin (Hb) concentration and reductions in oxygen consumption. The addition of humic acid prevented these changes. The reduced plasma chloride concentration, increased blood Hct value and Hb concentration recovered completely at 13 degrees C, whereas the lowered oxygen consumption recovered less completely, which may be attributed to the remaining minor gill damage (lamellar hypertrophy). At the lower temperature, the adherence of lamellae persisted after the recovery period, and oxygen consumption, therefore, remained at a very low level. The decreased plasma chloride concentration was also unable to recover. The accumulation of Al inside the gill tissue was greater at low temperature. We conclude that the acute toxicity of a mixture of Fe and Al to grayling and their subsequent ability to recovery is dependent on the exposure temperature.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0166-445X
pubmed:author
pubmed:issnType
Print
pubmed:day
8
pubmed:volume
65
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
73-84
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Effects of temperature on the recovery of juvenile grayling (Thymallus thymallus) from exposure to Al+Fe.
pubmed:affiliation
Finnish Game and Fisheries Research Institute, P.O. Box 6, FIN-00721 Helsinki, Finland.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't