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Strontium (Sr) upta...
Strontium (Sr) uptake from water and food in otoliths of juvenile pike (Esox lucius L.)
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- Engstedt, Olof, 1980- (författare)
- Linnéuniversitetet,Institutionen för naturvetenskap, NV,Fish migration group
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- Koch-Schmidt, Per (författare)
- Linnéuniversitetet,Institutionen för naturvetenskap, NV,Fish migration group
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- Larsson, Per, 1954- (författare)
- Linnéuniversitetet,Institutionen för naturvetenskap, NV,Ctr Ecol & Evolut Microbial Model Syst EEMiS;Fish migration group
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(creator_code:org_t)
- Elsevier, 2012
- 2012
- Engelska.
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Ingår i: Journal of Experimental Marine Biology and Ecology. - : Elsevier. - 0022-0981 .- 1879-1697. ; 418-419, s. 69-74
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The strontium (Sr) or Sr:Ca ratio in otoliths has been widely used in the last decade to describe the migration histories of fish between fresh and marine waters. However, reference experimental studies of particular species and waters are necessary to confirm the underlying assumptions and evaluate the applicability of this tool to field data. Laboratory experiments indicated that juvenile, anadromous pike (Esox lucius L) from the Baltic Sea reared in successively increasing salinities (from 0 to 7 parts per thousand) for 110 d accumulated Sr in their otoliths according to a positive relationship with waterborne Sr. When the pike were given prey fish from brackish (7 parts per thousand) environments, the otolith Sr:Ca ratio increased more than in fish given prey from freshwater lakes. Pike held at constant salinity (7 parts per thousand) and given prey fish from the same salinity environment had an Sr:Ca ratio of 6.9 x 10(-3). The ratio decreased successively for fish given prey from freshwater (4.4 x 10(-3)) or kept in freshwater and given food from brackish water (3.1 x 10(-3)). Fish exposed to freshwater and given prey fish from freshwater displayed no increase in Sr:Ca ratio (1.6 x 10(-3)). The experiments demonstrated that the Sr:Ca ratio may be used to describe the migration history of pike between rivers and the Baltic Sea. The maximum Sr:Ca value for pike given marine-origin food corresponded to those of fish collected from the Baltic Sea.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- Pike
- Baltic Sea
- Diet
- Sr:Ca
- Strontium
- Akvatisk ekologi
- Aquatic Ecology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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