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Do Mitochondria Limit Hot Fish Hearts? Understanding the Role of Mitochondrial Function with Heat Stress in Notolabrus celidotus
TLDR
It is proposed that heat-stressed cardiac mitochondria drive HF in heat stressed hearts in fish and play a significant role in thermal stress tolerance, and perhaps limit species distributions by contributing to HF. Expand
Low-O2 acclimation shifts the hypoxia avoidance behaviour of snapper (Pagrus auratus) with only subtle changes in aerobic and anaerobic function
TLDR
It is suggested that a prioritization of O2 delivery and O2 utilisation over O2 uptake during long-term hypoxia may convey a significant survival benefit to snapper in terms of behavioural low-O2 tolerance. Expand
Could thermal sensitivity of mitochondria determine species distribution in a changing climate?
TLDR
The present study confirmed that cardiac mitochondrial dysfunction contributes to heat stress-induced HF in two additional wrasses that occupy cold temperate (Notolabrus fucicola) and tropical habitats, and supported the view that species distribution may be related to the thermal limits of mitochondrial stability and function. Expand
The Ionoregulatory Responses to Hypoxia in the Freshwater Rainbow Trout Oncorhynchus mykiss
We utilized the rainbow trout, a hypoxia‐intolerant freshwater teleost, to examine ionoregulatory changes at the gills during hypoxia. Progressive mild hypoxia led first to a significant elevationExpand
Regulation of gill transcellular permeability and renal function during acute hypoxia in the Amazonian oscar (Astronotus ocellatus): new angles to the osmorespiratory compromise
TLDR
It is suggested that a rapid closure of transcellular channels, perhaps effected by pavement cell coverage of the crypts, allows conservation of ions and reduction of ionoregulatory costs without compromise of O2 exchange capacity during acute hypoxia, a response very different from the traditional osmorespiratory compromise. Expand
Gill morphology and acute hypoxia: responses of mitochondria-rich, pavement, and mucous cells in the Amazonian oscar (Astronotus ocellatus) and the rainbow trout (Oncorhynchus mykiss), two species
TLDR
Three different physiological approaches to the osmo-respiratory compromise correlate with rapid, oppositely directed changes in gill morphology in hypoxia-tolerant rainbow trout. Expand
Temperature acclimation of mitochondria function from the hearts of a temperate wrasse (Notolabrus celidotus).
TLDR
It is concluded that while acclimation to summer temperatures does alter cardiac mitochondrial function in N. celidotus, these changes need not be beneficial in terms of oxidative phosphorylation efficiency and may come at an energetic cost, which would be detrimental in the face of further habitat warming. Expand
In vitro inhibition of cytochrome P450-mediated reactions by gemfibrozil, erythromycin, ciprofloxacin and fluoxetine in fish liver microsomes.
TLDR
It is demonstrated that in vitro hepatic CYP inhibition by pharmaceuticals is possible in fish and the patterns seen here are different than what would be expected based on CYP inhibitor in mammals. Expand
Thermal plasticity of skeletal muscle mitochondrial activity and whole animal respiration in a common intertidal triplefin fish, Forsterygion lapillum (Family: Tripterygiidae)
TLDR
Despite some apparent acclimation capacity of skeletal muscle mitochondria, the ATP synthesis capacity of this species is constrained at high temperatures, and that a greater fraction of metabolism in skeletal muscle appears to be supported anaerobically at higher temperatures. Expand
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