SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:gup.ub.gu.se/326677"
 

Sökning: onr:"swepub:oai:gup.ub.gu.se/326677" > Population variabil...

  • Van Wert, J. C. (författare)

Population variability in thermal performance of pre-spawning adult Chinook salmon

  • Artikel/kapitelEngelska2023

Förlag, utgivningsår, omfång ...

  • 2023

Nummerbeteckningar

  • LIBRIS-ID:oai:gup.ub.gu.se/326677
  • https://gup.ub.gu.se/publication/326677URI
  • https://doi.org/10.1093/conphys/coad022DOI

Kompletterande språkuppgifter

  • Språk:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Climate change is causing large declines in many Pacific salmon populations. In particular, warm rivers are associated with high levels of premature mortality in migrating adults. The Fraser River watershed in British Columbia, Canada, supports some of the largest Chinook salmon (Oncorhynchus tshawytscha) runs in the world. However, the Fraser River is warming at a rate that threatens these populations at critical freshwater life stages. A growing body of literature suggests salmonids are locally adapted to their thermal migratory experience, and thus, population-specific thermal performance information can aid in management decisions. We compared the thermal performance of pre-spawning adult Chinook salmon from two populations, a coastal fall-run from the Chilliwack River (125 km cooler migration) and an interior summer-run from the Shuswap River (565 km warmer migration). We acutely exposed fish to temperatures reflecting current (12 degrees C, 18 degrees C) and future projected temperatures (21 degrees C, 24 degrees C) in the Fraser River and assessed survival, aerobic capacity (resting and maximum metabolic rates, absolute aerobic scope (AAS), muscle and ventricle citrate synthase), anaerobic capacity (muscle and ventricle lactate dehydrogenase) and recovery capacity (post-exercise metabolism, blood physiology, tissue lactate). Chilliwack Chinook salmon performed worse at high temperatures, indicated by elevated mortality, reduced breadth in AAS, enhanced plasma lactate and potassium levels and elevated tissue lactate concentrations compared with Shuswap Chinook salmon. At water temperatures exceeding the upper pejus temperatures (T-pejus, defined here as 80% of maximum AAS) of Chilliwack (18.7 degrees C) and Shuswap (20.2 degrees C) Chinook salmon populations, physiological performance will decline and affect migration and survival to spawn. Our results reveal population differences in pre-spawning Chinook salmon performance across scales of biological organization at ecologically relevant temperatures. Given the rapid warming of rivers, we show that it is critical to consider the intra-specific variation in thermal physiology to assist in the conservation and management of Pacific salmon. Warming water temperatures threaten aquatic species and impact economies and cultures. Yet, vulnerability can vary within a species. We assessed the thermal performance of two populations of pre-spawning adult Chinook salmon and found that an interior summer-run population of Chinook salmon performed better at warmer temperatures than a coastal fall-run population. Current river temperatures already exceed the functional warming tolerances of both populations and highlight the value of physiological studies in supporting management decisions.

Ämnesord och genrebeteckningar

  • NATURVETENSKAP Biologi Ekologi hsv//swe
  • NATURAL SCIENCES Biological Sciences Ecology hsv//eng
  • thermal biology
  • temperature
  • Oncorhynchus
  • local adaptation
  • intraspecific variability
  • conservation
  • climate change
  • Chinook salmon
  • aerobic metabolic scope
  • maximum metabolic-rate
  • sockeye oncorhynchus-nerka
  • lower fraser-river
  • swimming performance
  • pacific salmon
  • exhaustive exercise
  • climate-change
  • oxygen-consumption
  • aerobic scope
  • behavioral
  • thermoregulation
  • Biodiversity & Conservation
  • Environmental Sciences & Ecology
  • Physiology

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Hendriks, B. (författare)
  • Ekström, Andreas,1979Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences(Swepub:gu)xekstr (författare)
  • Patterson, D. A. (författare)
  • Cooke, S. J. (författare)
  • Hinch, S. G. (författare)
  • Eliason, E. J. (författare)
  • Göteborgs universitetInstitutionen för biologi och miljövetenskap (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Conservation Physiology11:12051-1434

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...
Van Wert, J. C.
Hendriks, B.
Ekström, Andreas ...
Patterson, D. A.
Cooke, S. J.
Hinch, S. G.
visa fler...
Eliason, E. J.
visa färre...
Om ämnet
NATURVETENSKAP
NATURVETENSKAP
och Biologi
och Ekologi
Artiklar i publikationen
Conservation Phy ...
Av lärosätet
Göteborgs universitet

Sök utanför SwePub

Wikipedia om författaren:
J_C_Van_Wert
Van Wert, J. C.
en

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy