Migratory history of the Russian sturgeon Acipenser guldenstadti in the Caspian Sea, as revealed by pectoral fin spine Sr:Ca ratios
Arai, T.; Levin, A.V.; Boltunov, A.N.; Miyazaki, N. (2002). Migratory history of the Russian sturgeon Acipenser guldenstadti in the Caspian Sea, as revealed by pectoral fin spine Sr:Ca ratios. Mar. Biol. (Berl.) 141(2): 315-319. http://dx.doi.org/10.1007/s00227-002-0820-y
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
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| Auteurs | | Top |
- Arai, T.
- Levin, A.V.
- Boltunov, A.N.
- Miyazaki, N.
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| Abstract |
Ontogenic patterns of change in pectoral fin spine Sr:Ca ratios were examined in the Russian sturgeon Acipenser guldenstadti from the Caspian Sea. Pectoral fin spine Sr:Ca ratios of the sturgeon fluctuated strongly along the life history transect in accordance with the migration pattern from freshwater to sea (brackish) water habitats, i.e. all specimens exhibited a typical anadromous pattern in the ratio. Several specimens showed two transition points in pectoral fin spine Sr:Ca ratios from low ratios to high, indicating that those specimens had a flexible migration strategy in the ambient water, and could migrate downstream to the Caspian Sea multiple times after spawning. |
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