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Showing 1 to 8 of 8 for “"Notothenioid"”.
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The influence of environmental temperature on the thermal tolerance of Antarctic notothenioid fishes
The evolution of the Antarctic notothenioid fishes in the chronically cold waters of the Southern Ocean has resulted in a remarkably narrow thermal tolerance shared among most extant species. While most of these fishes have the capacity to accommodate the physiological challenges of low …
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Investigating the larval/juvenile notothenioid fish species assemblage in Mcmurdo Sound, Antarctica using phylogenetic reconstruction
… within the little-known larval and juvenile notothenioid fish assemblage of McMurdo Sound, Antarctica, and to compare this assemblage to the well-studied local adult community. Location: McMurdo Sound, Antarctica. Methods: We extracted genomic DNA from larval and juvenile notothenioid fishes …
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Analysis of the antifreeze glycoprotein containing genomic locus in the Antarctic notothenioid fish dissostichus mawsoni
… most of the late Eocene temperate fish fauna. A notothenioid ancestral stock survived and went through an adaptive radiation that gave rise to a variety of ecotypes that filled the empty niches. The notothenioid fishes now account for 95% of the fish biomass that inhabits the continental shelf of …
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Language like behavior in protein secondary structure and analysis of mitochondrial genomes and transposable elements in Antarctic notothenioid fishes
… role of components of the genomes of Antarctic notothenioids: mitochondrial genomes and transposable elements (TEs) in their adaptation to extreme cold temperatures of Southern Ocean. For mitochondrial genomes, I assembled and annotated five Antarctic notothenioid genomes, including four …
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Comparative antifreeze trait analyses of Antarctic and temperate sister species pairs shed light on tempo of adaptive trait loss under relaxed selection
Antarctic notothenioid fishes endemic to the ice-laden, freezing (-1.9°C) Southern Ocean survive by having evolved antifreeze glycoproteins (AFGP). Over evolutionary time several lineages have escaped the isolated frigid Southern Ocean to north of the Antarctic Polar Front and successfully …
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Freezing Avoidance of Antarctic Fishes: The Role of a Novel Antifreeze Potentiating Protein and the Antifreeze Glycoproteins
… composition. It was found in all the Antarctic notothenioid fishes examined, at different concentrations. It was most abundant in the shallow water fishes swimming in ice-laden water, but was present at concentrations ten fold less in the deep-water fishes where there is no ice. AFPP was not …
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Behavioral freeze avoidance in an Antarctic fish
… avoidance is vital for the survival of Antarctic notothenioid fishes inhabiting the ice-laden waters of the high-latitude Southern Ocean. Most notothenioids avoid freezing primarily by the action of their blood-borne antifreeze glycoproteins (AFGPs). AFGPs arrest the growth of environmental ice …
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Effect of environmental temperature on Antarctic fish antifreeze protein activity and concentration
… group of fishes in this region is the suborder Notothenioidei. For notothenioid fishes blood serum osmolytes only depress the freezing point of their blood to about -1.0°C, almost a full degree warmer than the environmental freezing point. The success of this group in the Southern Ocean is …