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Trade-Offs Underwater: Physiological Plasticity of Rainbow Trout (Oncorhynchus mykiss) Confronted by Multiple Stressors

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cris.virtual.author-orcid0000-0003-3241-9722
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cris.virtualsource.author-orcidad4a1b77-619f-4b63-b403-361e302e151f
cris.virtualsource.author-orcidc1dfb75a-4aa2-4a6a-ab6b-9dad6d511dab
cris.virtualsource.author-orcid399878b4-b1e1-4d2f-bf0c-3a2fc0d4293a
cris.virtualsource.author-orcid873c520e-a7a8-41f4-8fc0-80e6d9d4745c
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cris.virtualsource.author-orcid440c8340-ca2a-4339-9c19-4d92dfe34d5f
dc.contributor.authorWernicke von Siebenthal, Elena
dc.contributor.authorRehberger, Kristina
dc.contributor.authorBailey, Christyn John
dc.contributor.authorRos, Albert Frank
dc.contributor.authorHerzog, Elio Luca
dc.contributor.authorSegner, Helmut
dc.date.accessioned2024-10-08T15:46:25Z
dc.date.available2024-10-08T15:46:25Z
dc.date.issued2018-12-16
dc.description.abstractOrganisms have evolved mechanisms to partition the available resources between fitness-relevant physiological functions. Organisms possess phenotypic plasticity to acclimate to changing environmental conditions. However, this comes at a cost that can cause negative correlations or “trade-offs”, whereby increasing investments in one function lead to decreased investments in another function. The aim of the present study was to investigate the prioritization of resource allocation between growth, pathogen defense, and contaminant response in juvenile rainbow trout (Oncorhynchus mykiss) exposed to changes of resource income or expenditure. We performed a multifactorial experiment with three resource-impacting stressors—limited Food availability, a parasitic infection, exposure to a vitellogenesis-inducing contaminant—and combinations thereof. Treatment with the individual stressors evoked the expected responses in the respective physiological target systems—body growth, immune system, and hepatic vitellogenin transcription—but we found little evidence for significant negative relations (tradeoffs) between the three systems. This also applied to fish exposed to combinations of the stressors.This high phenotypic flexibility of trout in their resource allocation suggests that linear resource allocations as mechanisms of phenotypic plasticity may be too simplistic, but it also may point to a greater capacity of ectothermic than endothermic vertebrates to maintain key physiological processes under competing resource needs due to lower maintenance costs.
dc.description.numberOfPages23
dc.description.sponsorshipZentrum für Fisch- und Wildtiermedizin (FIWI)
dc.identifier.doi10.7892/boris.129645
dc.identifier.publisherDOI10.3390/fishes3040049
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/66085
dc.language.isoen
dc.publisherMDPI
dc.relation.ispartofFishes
dc.relation.issn2410-3888
dc.relation.organizationDCD5A442C1CCE17DE0405C82790C4DE2
dc.relation.organizationEF63E0A6302CE755E0405C82960C4424
dc.subject.ddc500 - Science::570 - Life sciences; biology
dc.subject.ddc600 - Technology::630 - Agriculture
dc.titleTrade-Offs Underwater: Physiological Plasticity of Rainbow Trout (Oncorhynchus mykiss) Confronted by Multiple Stressors
dc.typearticle
dspace.entity.typePublication
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oaire.citation.issue4
oaire.citation.startPage49
oaire.citation.volume3
oairecerif.author.affiliationZentrum für Fisch- und Wildtiermedizin (FIWI)
oairecerif.author.affiliationZentrum für Fisch- und Wildtiermedizin (FIWI)
oairecerif.author.affiliationZentrum für Fisch- und Wildtiermedizin (FIWI)
oairecerif.author.affiliationZentrum für Fisch- und Wildtiermedizin (FIWI)
oairecerif.author.affiliationZentrum für Fisch- und Wildtiermedizin (FIWI)
oairecerif.author.affiliationZentrum für Fisch- und Wildtiermedizin (FIWI)
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unibe.date.licenseChanged2019-10-23 13:25:42
unibe.description.ispublishedpub
unibe.eprints.legacyId129645
unibe.refereedTRUE
unibe.subtype.articlereview

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