Spring migration of some anadromous freshwater fish species in the northern Bothnian Sea
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Quantitative estimations of spring migrating fish have been made in the mouth part of the small coastal river Ängerån which flows into the northern Bothnian Sea (63°35′N, 19°50′E). In 1981 nearly 3 000 fish were counted ascending to the spawning grounds in the lower reaches of the Ängerån. These species, such as pike, perch, roach and ide, adapted to the oligohaline environment in the Bothnian Sea for most of the year, migrate to spawn in the coastal stream. The reason for these migrations can be interpreted to indicate that the Ängerån offers more favourable water temperature conditions at spawning time compared with the Bothnian Sea, which is ice-covered up to the beginning of May. The most important result of the investigation in the Ängerån is that these fish species, in the same way as the salmonids, return to their‘home-stream’ every year as adults.
Andreasson & Petersson (1982) listed 69 species of fish in the oligohaline Gulf of Bothnia (Table 1) where salinity varies from 2‰ near the mouth of the River Torneäly to 6‰ in the vicinity of the Åland Islands (Fig. 1). The fish fauna comprises freshwater and marine species, fish migrating between brackish and freshwater rivers and streams, and recently introduced non-endogenous species.
Andreasson & Petersson (1982) designated only five species as anadromous migrators, whereas our studies show that 11 species migrate from the sea to spawn in the Ängerån, a small river discharging into the northern Bothnian Sea (Fig. 2). Earlier reports on these migrations have been given by Berglund (1978) and Johnson (1978, 1982) and for another small stream in the area by Berg (1982).
The present paper describes the annual spring migrations of pike, perch, roach and ide between the northern Bothnian Sea and the Ängerån, for the year 1981.
Andreasson, S. & Petersson, B., 1982. The fish fauna of the Gulf of Bothnia. Mon. Biol. 45: 299–314.
Berg, A., 1982. Spring migration of some species between the northern Bothnian Sea and a small coastal stream. Mon. Biol. 45: 361–368.
Berglund, I., 1978. Spawning migration of the perch, Perca fluviatilis L., in a subarctic coastal stream. Aquilo, Ser. Zool. 18: 43–48.
Eriksson, L. O. & Müller, K., 1982. The importance of a small river for recruitment of coastal fish population. Mon. Biol. 45: 369–384.
Johnson, T., 1982. Seasonal migrations of anadromous fishes in a northern Swedish stream. Mon. Biol. 45: 351–360.
Kristoffersson, R., Broberg, S. & Oikari, A., 1972. Effect of temperature change on some blood constituents and osmotic balance in the pike (Esox lucius L.) in brackish water. Ann. zool. fenn 9: 212–218.
Lindroth, A., Larsson, P. O. & Bertmar, G., 1982. Where does the Baltic salmon go? Mon. Biol. 45: 385–412.
Müller, K. & Müller-Haeckel, A., 1978. Faunistic research in the river Ängerån and in adjacent coastal areas of the Bothnian Sea. Fauna Norrlandica. 3: 1–17.
Müller, K. (ed), 1982. Coastal Research in the Gulf of Bothnia. Series Monographiae Biologicae, Vol. 45. Dr W. Junk Publishers, The Hague-Boston-London. 462 pp.
Müller, K. & Müller-Haeckel, A., 1982. The physiography of the river Ängerån. Mon. Biol. 45: 35–42.
Müller-Haeckel, A. & Sjöberg, A., 1982. Annual variations in chemical and hydrographical factors in the river Ängerån and in brackish water of adjacent coastal area of the Bothnian Sea. Mon. Biol. 45: 59–80.
Neuman, E., 1974. The temperature and the balance between freshwater and marine fishes in some Baltic archipelagos. Inform. Inst. Freshwater Res. Drottningholm. (14). 60 pp. (mimeogr.).
Neuman, E., 1977. Activity and distribution of benthic fish in some Baltic archipelagos with special reference to temperature. Ambio 5: 47–55.
Neuman, E., 1982. Species composition and seasonal migrations of coastal fish fauna in the Southern Bothnian Sea. Mon. Biol. 45: 315–350.
Oikari, A., 1975a. Hydromineral balance in some brackish-water teleosts after thermal acclimation, particularly at temperature near zero. Ann. zool. fenn 12: 215–219.
Oikari, A., 1975b. Seasonal changes in plasma and muscle hydromineral balance in three Baltic teleosts, with special reference to the thermal response. Ann zool. fenn : 230–236.
Oikari, A., 1978a. Aspects of osmotic and ionic regulations in two Baltic teleosts: effects of salinity on blood and urine composition. Mar. Biol. 44: 345–355.
Oikari, A., 1978b. Ionic and osmotic balance in the pike, Esox lucius L. in fresh and brackish water. Ann. zool. fenn. 15: 84–88.
Pietikainen, S., Niemi, Å., Tulkki, P. & Aurima, K., 1978. Mean values and trends of physical and chemical properties in the Gulf of Bothnia. Finn. mar Res. 244: 64–75.
Rich, W. H., 1937. ‘Homing’ of Pacific salmon. Science 85: 477–478.
Sauramo, M., 1958. Die Geschichte der Ostsee. Ann. Acad. Sci. fenn. 51: 522 pp.
Scheer, B. T., 1939. Homing instinct in salmon. Quart. Rev. Biol. 14: 408–430.
- Spring migration of some anadromous freshwater fish species in the northern Bothnian Sea
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