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Temperature adaptation in myosin of Antarctic fish
Nature, 1975A RELATIONSHIP exists between the thermostability of fish skeletal muscle myosin, actomyosin and myofibril preparations and the environmental temperature at which the fish lives1–3. Compared with those isolated from mammals and warm sea fishes, the myosins isolated from cold water species readily aggregate on storage, are more sensitive to denaturation
I A, Johnston +3 more
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Disaptation and recovery in the evolution of Antarctic fishes
Trends in Ecology & Evolution, 2000The radiation of notothenioid fishes provides an excellent system to explore issues of evolution and adaptation. Most studies emphasize adaptation to the extreme Antarctic environment; however, recent work provides cogent examples of disaptation or evolutionary loss of function.
, Montgomery, , Clements
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Polar Biology, 2005
Drinking rates have never been measured in Antarctic fish. Drinking rates were measured in four species of notothenioid fish, including a hemoglobinless icefish, found in the near-freezing waters of the Ross Sea of the Southern Ocean. All of the fish, with the exception of the icefish, had low drinking rates and high serum osmolalities relative to ...
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Drinking rates have never been measured in Antarctic fish. Drinking rates were measured in four species of notothenioid fish, including a hemoglobinless icefish, found in the near-freezing waters of the Ross Sea of the Southern Ocean. All of the fish, with the exception of the icefish, had low drinking rates and high serum osmolalities relative to ...
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Freezing Resistance in Some Antarctic Fishes
Science, 1969Measurements of serum freezing points in three Antarctic marine fishes indicated that they do not freeze in the -1.87°C seawater because their blood is isosmotic to seawater. Concentrations of sodium chloride, urea, and free amino acids in the serum accounted for only half of the freezing-point depression of the serum. A protein containing carbohydrate
A L, DeVries, D E, Wohlschlag
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Heart mitochondrial oxidations of an Antarctic fish
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1973Abstract 1. 1. Comparative studies were made of the effects of temperature on cytochrome-linked oxidations by heart mitochondria from two mammals, the seal (Leptonychotes weddelli) and the cow (Bos taurus), and from the Antarctic fish (Trematomus borchgrevinki). 2. 2.
J R, Vandenheede +3 more
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Age Determination in Antarctic Fish
1991The determination of age is an essential component in understanding the life history of fish, and is important in the assessment of the population dynamics of species to provide the data necessary to enable effective conservation and fisheries management.
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Hepatic ultrastructural specialization in Antarctic fishes
Cell and Tissue Research, 1981Compared with those of other verebrate animals, the livers of Antarctic fishes have a unique type of perisinusoidal (Ito) cell. These cells were studied in 9 species with emphasis on Dissostichus mawsoni. Perisinusoidal cells are found in large numbers throughout the liver, have long cytoplasmic arms and, in Dissostichus, contain numerous lipid ...
J T, Eastman, A L, DeVries
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Renin-angiotensin system in antarctic fishes
Comparative Biochemistry and Physiology Part A: Physiology, 19911. 1. The presence of a renin-angiotensin-like system has been investigated in the Antarctic fishes Chionodraco hamatus (Fam. Channichthydae) and Pagothenia (Trematomus) bernacchii (Fam. Notothenidae). 2. 2. A renin-like activity is present in plasma and kidney of both the white blooded (Chionodraco) and the red blooded (Pagothenia) species ...
UVA, BIANCA MARIA +3 more
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Evolution and adaptive radiation of antarctic fishes
Trends in Ecology & Evolution, 1996There are few instances where a knowledge of the thermal physiology, habitats and lifestyles of a group of closely related species can be mapped onto a well-supported phylogeny and a detailed climatic history. The unique fish fauna of the Southern Ocean, dominated by a single group of fish whose phylogeny is known from traditional and molecular ...
Clarke, Andrew, Johnston, Ian A.
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Molecular evolution of hemoglobins of antarctic fishes (Notothenioidei)
Journal of Molecular Evolution, 1997Amino acid sequences of alpha- and beta-chains of human hemoglobin and of hemoglobins of coelacanth and 24 teleost fish species, including 11 antarctic and two temperate Notothenioidei, were analyzed using maximum parsimony. Trees were derived for the alpha- and beta-chains separately and for tandemly arranged sequences, using the human and coelacanth ...
Stam WT +4 more
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