A multi-scaling approach showing a transient metabolic mismatch in a freshwater fish (Zingel asper) during an acute heat stress DOI

Julia Watson,

Chloé Souques,

François‐Xavier Dechaume‐Moncharmont

и другие.

Journal of Experimental Biology, Год журнала: 2025, Номер 228(10)

Опубликована: Май 15, 2025

Heat stress events will be more frequent and intense in the future. These challenge capacity of organisms to exhibit sufficient metabolic flexibility adapt such variations. To better understand acclimation processes implemented response acute warming, with an integrative approach we examined vivo rate cardiac mitochondrial respiration Rhône streber, during after a heat on precise time line. The temperature was raised from 13°C 18°C (+1°C per hour) maintained at for 5 days, before returning same rate. We repeatedly measured, days end event, individuals different individuals. At organismal level, oxygen consumption increased line followed by return pre-acclimated levels just stress. Conversely, decreased stress, especially 24 h in, recovered event. Our results suggest that responsible mismatch strebers. Indeed, observed (i) strong thermodynamic effect without any process, suggesting range temperatures chosen not stressful fish, (ii) establishment transitory energy saving process. underline need studies how climate change.

Язык: Английский

Physiological Traits for Predicting Poleward Extensions in Tropical Fishes: From Lab to Management DOI Creative Commons
Adam T. Downie, Curtis Champion, David J. Booth

и другие.

Global Change Biology, Год журнала: 2025, Номер 31(4)

Опубликована: Апрель 1, 2025

ABSTRACT Tropicalization, the phenomena by which tropical organisms are extending their distributions poleward into temperate latitudes in response to increasing temperatures and strengthening boundary currents, is occurring globally. Vagrant species have large ecological economic ramifications for habitats they invade. However, not all vagrants able persist long term habitats, with first winter being a potential bottleneck persistence. This brings question how some vagrant successful at surviving conditions physiology underpinning this success. provides opportunity only look available data introspectively but also forward‐thinking applying range of holistic physiological traits relevant biology management. Therefore, aim our review twofold: current state‐of‐knowledge mechanisms tropicalization develop framework practices can complement new perspectives tools. We use range‐expanding reef fishes as model group over 100 undergoing climate‐driven shifts eastern Australia case‐study location due it primary focal “living laboratory” understanding dynamics since early 2000s. Current studies suggest that diet, behavior, metabolic trade‐offs may explain fish persistence, these focus on whole‐animal traits. Our helps expand upon traits, life stages, experimental design, (e.g., we highlight value genetic cellular markers pathway changes under cold stress biomarkers) improve tropicalization. Taken together, places emphasis measuring suite complimentary from whole‐animal, help guide future predictions long‐term persistence habitats.

Язык: Английский

Процитировано

0
A multi-scaling approach showing a transient metabolic mismatch in a freshwater fish (Zingel asper) during an acute heat stress DOI

Julia Watson,

Chloé Souques,

François‐Xavier Dechaume‐Moncharmont

и другие.

Journal of Experimental Biology, Год журнала: 2025, Номер 228(10)

Опубликована: Май 15, 2025

Heat stress events will be more frequent and intense in the future. These challenge capacity of organisms to exhibit sufficient metabolic flexibility adapt such variations. To better understand acclimation processes implemented response acute warming, with an integrative approach we examined vivo rate cardiac mitochondrial respiration Rhône streber, during after a heat on precise time line. The temperature was raised from 13°C 18°C (+1°C per hour) maintained at for 5 days, before returning same rate. We repeatedly measured, days end event, individuals different individuals. At organismal level, oxygen consumption increased line followed by return pre-acclimated levels just stress. Conversely, decreased stress, especially 24 h in, recovered event. Our results suggest that responsible mismatch strebers. Indeed, observed (i) strong thermodynamic effect without any process, suggesting range temperatures chosen not stressful fish, (ii) establishment transitory energy saving process. underline need studies how climate change.

Язык: Английский

Процитировано

0