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Göteborgs universitets publikationer

Do individual Activity Patterns of Brown Trout (Salmo trutta) alter the Exposure to Parasitic Freshwater Pearl Mussel (Margaritifera margaritifera) Larvae?

Författare och institution:
Niklas Wengström (Institutionen för biologi och miljövetenskap); Fredrik Wahlqvist (Institutionen för biologi och miljövetenskap); Joacim Näslund (Institutionen för biologi och miljövetenskap); David Aldvén (Institutionen för biologi och miljövetenskap); Libor Zavorka (Institutionen för biologi och miljövetenskap); M. E. Osterling (-); Johan Höjesjö (Institutionen för biologi och miljövetenskap)
Publicerad i:
Ethology, 122 ( 9 ) s. 769-778
ISSN:
0179-1613
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2016
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
The hypothesis that interindividual differences in the activity of brown trout alter the exposure to parasitic freshwater pearl mussel glochidia was tested in a Swedish stream. Wild yearling brown trout (N=103) were caught, individually tagged for identification and scored for open-field activity during standardized laboratory tests in June. Fifty gravid freshwater pearl mussels were relocated to the stream, where after the trout were released back into the stream. The fish were recaptured in October (N=35), checked for glochidia encystment (infested individuals: n=6) and re-scored for open-field activity traits. Swimming velocity during the test was higher in fish infected with glochidia, suggesting that high activity could increase their exposure to glochidia. Potentially, as metabolism rate and ventilation rate typically increase with activity, elevated activity may lead to an increased likelihood of glochidia passing over the gills. This novel finding suggests that glochidia infestation is non-random and that the behaviour of the host fish can influence the likelihood of glochidia infestation.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Biologiska vetenskaper ->
Ekologi
Nyckelord:
glochidia, parasites, animal personality, mussel conservation, reintroduction, behavioural, PACE-OF-LIFE, BEHAVIORAL SYNDROMES, ANIMAL PERSONALITY, HOST BEHAVIOR, ECTOPARASITIC COPEPODS, SALVELINUS-FONTINALIS, EVOLUTIONARY ECOLOGY, BROOK TROUT, FISH, WILD
Postens nummer:
241771
Posten skapad:
2016-09-14 11:28
Posten ändrad:
2016-09-14 11:29

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