Salemaa, H. & Heino, T. 1990: Chromosome numbers of Fennoscandian glacial relict Crustacea. — Annales Zoologici Fennici 27: 207–210.
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Väinölä, R. 1990: Molecular time scales for evolution in Mysis and Pontoporeia. — Annales Zoologici Fennici 27: 211–214.
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Väinölä, R. & Rockas, H. 1990:New distributional data on ‘glacial relict’ crustaceans. — Annales Zoologici Fennici 27: 215–220.
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Särkkä, J., Meriläinen, J. J. & Hynynen, J. 1990: The distribution of relict crustaceans in Finland: new observations and some problems and ideas concerning relicts. — Annales Zoologici Fennici 27: 221–225.
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Zmudzinski, L. 1990: Past and recent occurrence of Malacostraca glacial relicts in Polish lakes. — Annales Zoologici Fennici 27: 227–230.
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Köhn, J. 1990: The recent distribution of glacial relict Malacostraca in the western and southern Baltic. — Annales Zoologici Fennici 27: 231–235.
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Köhn, J. & Waterstraat, A. 1990: Recent distribution of glacial relict Malacostraca in the lakes of Mecklenburg. — Annales Zoologici Fennici 27: 237–240.
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Hill, C., Furst, M. & Hammar, J. 1990: Introduction of the amphipods Pallasea quadrispinosa and Gammaracanthus lacustris into lakes in northern Sweden. — Annales Zoologici Fennici 27: 241–244.
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Aura, R.-L., Valtonen, E. T. & Andersin, A.-B. 1990: On the acanthocephalan infection in some glacial relict crustaceans in Finland. — Annales Zoologici Fennici 27: 245.
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Astthorsson, O. S. 1990: Aspects of the biology of Mysis oculata on the west coast of Iceland. — Annales Zoologici Fennici 27: 247–251.
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Salemaa, H., Vuorinen, I. & Välipakka, P. 1990: The distribution and abundance of Mysis populations in the Baltic Sea. — Annales Zoologici Fennici 27: 253–257.
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Rudstam, L. G. & & Hansson, S. 1990: On the ecology of Mysis mixta (Crustacea, Mysidacea) in a coastal area of the northern Baltic proper. — Annales Zoologici Fennici 27: 259–263.
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Grönholm, L. & Hakala, I. 1990: Annual and diurnal vertical migrations and the food of Mysis relicta in Lake Pääjärvi, Southern Finland. — Annales Zoologici Fennici 27: 265.
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Kristoffersson, R. & Kuosa, P.-L. 1990: Studies on the ecological physiology of Saduria entomon. — Annales Zoologici Fennici 27: 267.
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Haahtela, I. 1990: What do Baltic studies tell us about the isopod Saduria entomon (L.)? — Annales Zoologici Fennici 27: 269–278.
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Sandberg, E. & Bonsdorff, E. 1990: On the structuring role of Saduria entomon (L.) on shallow water zoobenthos. — Annales Zoologici Fennici 27: 279–284.
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Leonardsson, K. 1990: Cannibalism as a population regulating mechanism in the brackish-water isopod Saduria entomon (L.). — Annales Zoologici Fennici 27: 285.
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Kivivuori, L. & Lagerspetz, K. Y. H. 1990: Thermal resistance and behaviour of the isopod Saduria entomon (L.). — Annales Zoologici Fennici 27: 287–290.
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Johnson, R. K. & Wiederholm, T. 1990: Long-term studies of profundal zoomacrobenthos in Sweden’s great lakes: implications of biotic interactions. — Annales Zoologici Fennici 27: 291–295.
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Uitto, A. & Sarvala, J. 1990: Perspectives on the ecological factors regulating Pontoporeia populations in the northern Baltic Sea. — Annales Zoologici Fennici 27: 297–301.
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Elmgren, R., Ankar, S. & Ejdung, G. 1990: Amphipods of the genus Pontoporeia as key elements in the Baltic benthos. — Annales Zoologici Fennici 27: 303–304.
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Lopez, G. & Elmgren, R. 1990: Feeding depths and organic absorption by Pontoporeia femorata and Pontoporeia affinis. — Annales Zoologici Fennici 27: 305.
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Cederwall, H. 1990: Diurnal pelagic swimming activity of Pontoporeia — a waste of energy? — Annales Zoologici Fennici 27: 307.
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Lindström, M. & Fortelius, W. 1990: Some factors affecting the horizontal migration of Pontoporeia affinis (Crustacea, Amphipoda) in laboratory conditions. — Annales Zoologici Fennici 27: 309–312.
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