Contrasting associations between breeding coloration and parasitism of male Arctic charr relate to parasite species and life cycle stage
| Autor: | Ian Mayer, Ida Beitnes Johansen, Øyvind Øverli, Jenny C. Shaw, Eirik Haugstvedt Henriksen, Per-Arne Amundsen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Male lcsh:Medicine Parasitism Zoology Article 03 medical and health sciences Fish Diseases 0302 clinical medicine Abundance (ecology) Parasite hosting Animals lcsh:Science Carotenoid VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Trophic level Salvelinus Diphyllobothrium chemistry.chemical_classification Life Cycle Stages Salmoniformes VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Multidisciplinary biology Host (biology) Pigmentation freshwater ecology Reproduction lcsh:R reproductive biology behavioural ecology biology.organism_classification Carotenoids 030104 developmental biology parasitic infection chemistry lcsh:Q 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019) |
| Popis: | Conspicuous carotenoid ornamentation is considered a signal of individual “quality” and one of the most intensely studied traits found to co-vary with parasitism. Since it has been suggested that only “high quality” individuals have enough resources to express excessive sexual ornaments and resist parasites, current theory struggles to explain cases where the brightest individuals carry the most parasites. Surprisingly little emphasis has been put on the contrasting routes to fitness utilized by different parasite species inhabiting the same host. Using Arctic charr (Salvelinus alpinus) as model species, we hypothesized that skin redness and allocation of carotenoids between skin and muscle (redness ratio) will be positively and negatively associated with parasites using the fish as an intermediate and final host, respectively. Both pigment parameters were indeed positively associated with abundances of parasites awaiting trophic transmission (Diplostomum sp. and Diphyllobothrium spp.) and negatively associated with the abundance of adult Eubothrium salvelini tapeworms. These empirical data demonstrate that contrasting associations between carotenoid coloration and parasite intensities relates to the specific premises of different parasite species and life cycle stages. |
| Databáze: | OpenAIRE |
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