A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Maternal effects in vulnerability to eye-parasites and correlations between behavior and parasitism in juvenile Arctic charr (2017)

Kortet, R., Lautala, T., Kekäläinen, J., Taskinen, J., & Hirvonen, H. (2017). Maternal effects in vulnerability to eye-parasites and correlations between behavior and parasitism in juvenile Arctic charr. Ecology and Evolution, 7(21), 8780-8787. https://doi.org/10.1002/ece3.3428

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Kortet, Raine; Lautala, Tiina; Kekäläinen, Jukka; Taskinen, Jouni; Hirvonen, Heikki

Lehti tai sarja: Ecology and Evolution

ISSN: 2045-7758

eISSN: 2045-7758

Julkaisuvuosi: 2017

Volyymi: 7

Lehden numero: 21

Artikkelin sivunumerot: 8780-8787

Kustantaja: John Wiley & Sons Ltd.

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1002/ece3.3428

Linkki tutkimusaineistoon: https://doi.org/10.5061/dryad.8c1vd

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/55849

Tiivistelmä

Hatchery‐reared fish show high mortalities after release to the wild environment. Explanations for this include potentially predetermined genetics, behavioral, and physiological acclimation to fish farm environments, and increased vulnerability to predation and parasitism in the wild. We studied vulnerability to Diplostomum spp. parasites (load of eye flukes in the lenses), immune defense (relative spleen size) and antipredator behaviors (approaches toward predator odor, freezing, and swimming activity) in hatchery‐reared juvenile Arctic charr (Salvelinus alpinus) using a nested mating design. Fish were exposed to eye‐fluke larvae via the incoming water at the hatchery. Fish size was positively associated with parasite load, but we did not find any relationship between relative spleen size and parasitism. The offspring of different females showed significant variation in their parasite load within sires, implying a dam effect in the vulnerability to parasites. However, the family background did not have any effect on spleen size. In the mean sire level over dams, the fish from the bolder (actively swimming) families in the predator trials suffered higher loads of eye flukes than those from more cautiously behaving families. Thus, the results indicate potentially maternally inherited differences in vulnerability to eye‐fluke parasites, and that the vulnerability to parasites and behavioral activity are positively associated with each other at the sire level. This could lead to artificial and unintentional selection for increased vulnerability to both parasitism and predation if these traits are favored in fish farm environments.

Vapaat asiasanat: antipredation behavior; Diplostomum eye flukes; hatchery-raised; immunocompetence; parasite resistance; salmonid

Liittyvät organisaatiot

OKM-raportointi: Kyllä

Raportointivuosi: 2017

JUFO-taso: 1