NDLI: Temporal changes and between-host variation in the intestinal parasite community of Arctic charr in a subarctic lake

Content Provider	Springer Nature Link
Author	Kuhn, Jesper A. Knudsen, Rune Kristoffersen, Roar Primicerio, Raul Amundsen, Per Arne
Copyright Year	2016
Abstract	The occurrence of trophically transmitted intestinal parasites in Arctic charr was analyzed from data material collected over two decades from Lake Takvatn, northern Norway. The main objectives were to investigate (i) between-year variation in parasite infracommunity composition, (ii) between-host variation in infracommunity composition, and (iii) possible interspecific interaction between parasites. The trematode Crepidostomum spp. and the cestode Eubothrium salvelini were most prevalent and had the highest mean intensities whereas the cestodes Proteocephalus sp. and Cyathocephalus truncatus were uncommon taxa. No clear indication of interspecific parasite interactions was evident. By far the most frequent infracommunity composition was E. salvelini co-existing with only Crepidostomum spp. Despite some indications of individual dietary specialization in Arctic charr, this strong species co-occurrence suggests that the majority of fish had been preying on the very different intermediate hosts of both parasites. Overall, even though some sporadic between-year variation was present, no long-term or cyclical variation in infracommunity composition and mean intensity was revealed, suggesting that the host–parasite system is in a steady state. Minor between-year variation was likely the result of changes in habitat and dietary utilization by Arctic charr, possibly linked to documented changes in the fish community structure of the lake.
Starting Page	79
Ending Page	91
Page Count	13
File Format	PDF
ISSN	00188158
Journal	Hydrobiologia
Volume Number	783
Issue Number	1
e-ISSN	15735117
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-03-16
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Salmonids Salvelinus alpinus Trophically transmitted parasites Trematodes Cestodes Freshwater & Marine Ecology Ecology Zoology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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