Climate warming and disease risks in temperate regions--Argulus coregoni and Diplostomum spathaceum as case studies |
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Authors: | Hakalahti T Karvonen A Valtonen E T |
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Institution: | Department of Biological and Environmental Science, PO Box 35 (ya), FI-40014, University of Jyv?skyl?, Finland. teihaka@bytl.jyu.fi |
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Abstract: | The link between climate changes and disease risks from various pathogens has been increasingly recognized. The effect of climatic factors on host-parasite population dynamics is particularly evident in northern latitudes where the occurrence and transmission of parasites are strongly regulated by seasonality-driven changes in environmental temperatures. Shortened winter periods would increase growth potential of many parasite populations. The ways in which climate warming could affect life history dynamics of the directly transmitted crustacean ectoparasite Argulus coregoni and complex life cycle trematode Diplostomum spathaceum, which frequently cause problems in northern fish farming, are discussed. Increased problems for fish farming are predicted in terms of increased infection pressure from these parasites in future. This would increase problems associated with infections and increase the use of expensive management protocols with high environmental impact. |
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