High parasite diversity in the amphipod Gammarus lacustris in a subarctic lake
| Autor: | Eirik Haugstvedt Henriksen, Armand M. Kuris, Jenny C. Shaw, Kevin D. Lafferty, Anna Siwertsson, Per-Arne Amundsen, Miroslava Soldánová, Jesper A. Kuhn, Rune Knudsen |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Population Zoology 010603 evolutionary biology 01 natural sciences Gammarus lacustris Predation 03 medical and health sciences lcsh:QH540-549.5 Helminths Parasite hosting education Ecology Evolution Behavior and Systematics 030304 developmental biology Nature and Landscape Conservation VDP::Mathematics and natural science: 400 0303 health sciences education.field_of_study Parasitic life cycles food web Ecology biology Amphipod VDP::Matematikk og Naturvitenskap: 400 trophically transmitted parasites biology.organism_classification Food web Cestoda Trematoda lcsh:Ecology |
| Zdroj: | Ecology and Evolution, Vol 10, Iss 21, Pp 12385-12394 (2020) |
| Popis: | Amphipods are often key species in aquatic food webs due to their functional roles in the ecosystem and as intermediate hosts for trophically transmitted parasites. Amphipods can also host many parasite species, yet few studies address the entire parasite community of a gammarid population, precluding a more dynamic understanding of the food web. We set out to identify and quantify the parasite community of Gammarus lacustris to understand the contributions of the amphipod and its parasites to the Takvatn food web. We identified seven parasite taxa: a direct life cycle gregarine, Rotundula sp., and larval stages of two digenean trematode genera, two cestodes, one nematode, and one acanthocephalan. The larval parasites use either birds or fishes as final hosts. Bird parasites predominated, with trematode Plagiorchis sp. having the highest prevalence (69%) and mean abundance (2.7). Fish parasites were also common, including trematodes Crepidostomum spp., nematode Cystidicola farionis, and cestode Cyathocephalus truncatus (prevalences 13, 6, and 3%, respectively). Five parasites depend entirely on G. lacustris to complete their life cycle. At least 11.4% of the overall parasite diversity in the lake was dependent on G. lacustris, and 16% of the helminth diversity required or used the amphipod in their life cycles. These dependencies reveal that in addition to being a key prey item in subarctic lakes, G. lacustris is also an important host for maintaining parasite diversity in such ecosystems. |
| Databáze: | OpenAIRE |
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