Results 211 to 220 of about 10,005 (267)
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Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 1998
We review the literature on the way the structure of icefish gills relates the physiology of these haemoglobin-less fishes. Vascular casting confirmed earlier reports that the only special feature of the gills is the large size of the blood vessels, especially the prominent and continuous marginal channels Isolated perfused gill arches were used to ...
J C, Rankin, H, Tuurala
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We review the literature on the way the structure of icefish gills relates the physiology of these haemoglobin-less fishes. Vascular casting confirmed earlier reports that the only special feature of the gills is the large size of the blood vessels, especially the prominent and continuous marginal channels Isolated perfused gill arches were used to ...
J C, Rankin, H, Tuurala
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Aglomerularism in Antarctic Fish
Science, 1974Urine formation in antarctic bony fish does not involve glomerular filtration. Evidence for aglomerularism came from both direct observation of kidney serial sections by light microscopy and the low concentrations of inulin labeled with carbon-14 that were excreted into the urine when this renal clearance tracer was injected into the bloodstream via a ...
G H, Dobbs, Y, Lin, A L, DeVries
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The hemoglobin system of Antarctic and non-Antarctic notothenioid fishes
Comparative Biochemistry and Physiology Part A: Physiology, 1997Studies of the hemoglobin system of fish of the suborder Notothenioidei have been extended to non-Antarctic species of Pseudaphritis urvillii and Notothenia angustata. The two species belong to families that were the first to diverge within the suborder.
D'Avino R, Di Prisco G
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Aspartic proteinases in Antarctic fish
Marine Genomics, 2009The present review surveys several recent studies of the aspartic proteinases from Antarctic Notothenioidei, a dominating fish group that has developed a number of adjustments at the molecular level to maintain metabolic function at low temperatures.
De Luca V +10 more
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Antifreeze glycopeptides of antarctic fishes
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1983A method is described for analysis of amino acid composition and concentration of antifreeze glycopeptides of Antarctic fish by automatic amino acid analysis of hydrolyzed samples purified by trichloroacetic acid fractionation. Preparations were 98% pure and showed characteristic alanine, threonine and proline compositions. Analyses were carried out in
A E, Haschemeyer, H W, Jannasch
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Metallothionein in Antarctic Fish
1998Zinc occupies a prominent position among transition and d10 elements because of the role played in many biological processes [1,2], including catalysis [3], transcription and translation [4]. The functional role of zinc depends on the large variety of metallorganic complexes produced by this element as a result of its interaction with different protein
V Carginale +8 more
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The oxidation process of Antarctic fish hemoglobins
European Journal of Biochemistry, 2004Analysis of the molecular properties of proteins extracted from organisms living under extreme conditions often highlights peculiar features. We investigated by UV‐visible spectroscopy and X‐ray crystallography the oxidation process, promoted by air or ferricyanide, of five hemoglobins extracted from Antarctic fishes (Notothenioidei).
Vitagliano L +5 more
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Ecological features of antarctic fishes
1999Only 1% of the world’s modern fish species live in antarctic waters, but the antarctic fish fauna display a number of different and unique features for large marine ecosystems.1,2 Most of the antarctic fishes possess so many physiological and biochemical peculiarities that they have been considered an extreme in the spectrum of animal diversification ...
M. VACCHI, PISANO, EVA, G. LA MESA
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Temperature Tolerance of Some Antarctic Fishes
Science, 1967Three species of Antarctic fishes which live in constantly near-freezing waters have a markedly low upper-lethal temperature of 6°C ; this is the lowest upper-lethal temperature reported for any organism. The fishes survive supercooling to —2.5°C. Data on brain metabolism in vitro support the hypothesis that the central nervous system is a primary site
G N, Somero, A L, DeVries
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