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Molecular phylogenetics and the evolution of Antarctic notothenioid fishes
Comparative Biochemistry and Physiology Part A: Physiology, 1997The monophyly of the antarctic fish suborder Notothenioidei and the monophyly of its earliest family the Bovichtidae have been investigated with 12S and 16S mitochondrial DNA sequences. New data from Cottoperca, Pseudaphritis, Harpagifer and several outgroups, in addition to available sequences, show that the bovichtids are paraphyletic.
P A, Ritchie, S, Lavoué, G, Lecointre
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Notothenioid fishes (Notothenioidei)
2009Abstract Notothenioids represent an adaptive radiation of teleost Ashes in the frigid waters of the Southern Ocean surrounding Antarctica (1). Of the 129 recognized species, 101 are found in marine costal habitats of Antarctica (Fig. 1), and the remaining species are distributed along costal areas of southern South America, the Falkland ...
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Ribosomal genes in notothenioid fishes: Focus on the chromosomal organisation
Marine Genomics, 2009This mini-review makes a survey and a summary of some major issues concerning the chromosomal organisation of ribosomal genes in fish genomes, by using Notothenioidei as the model. The increasing body of information, published during the last two decades on the chromosomal mapping of the two ribosomal genes classes (45S rDNA and 5S rDNA) in ...
PISANO, EVA, GHIGLIOTTI, LAURA
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Bathymetric distributions of notothenioid fishes
Polar Biology, 2017There has been no comprehensive study of the bathymetry of notothenioid fishes. Therefore, I analyzed minimum and maximum depths and depth ranges for 128 of 142 species that collectively range from 0 to ≈3000 m. Means (and medians) for maximum depths are 176 m (75 m) for non-Antarctic, 511 m (360 m) for sub-Antarctic, and 963 m (899 m) for Antarctic ...
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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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Cardiovascular control in Antarctic notothenioid fishes
Comparative Biochemistry and Physiology Part A: Physiology, 1997Abstract The temperatures in the polar oceans are not only low, but also relatively stable. Blood becomes more viscous at cold temperatures and it is assumed that this increase of viscosity is responsible for a number of adaptations of the cardiovascular system.
William Davison +3 more
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Heat hardening in Antarctic notothenioid fishes
Polar Biology, 2012Many ectotherms rapidly acquire a short-lived increase in heat tolerance following a heat shock. This capacity to heat harden has been noted in a number of temperate fishes, but it is unknown whether it can also be found among the stenothermal Antarctic notothenioid fishes.
Kevin T. Bilyk +2 more
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Karyotypes of basal lineages in notothenioid fishes: the genus Bovichtus
Polar Biology, 2006Using comparative cytogenetic techniques, we characterized the chromosomes of fishes from the family Bovichtidae, the basal lineage of the largely Antarctic suborder Notothenioidei. We focused on three Sub-Antarctic species of the genus Bovichtus that differ greatly in their circumpolar distributions: B.
F. MAZZEI +6 more
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Ecology of Notothenioid Fish in the Weddell Sea
1991Low water temperature, and the seasonality and scarcity of food are key factors in the life of polar ectotherms (Clarke 1983). Life in cold water requires special adaptations against freezing in teleost fish (DeVries 1971), and the need to accumulate energy reserves during summer may govern the seasonal activity pattern.
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Review of the Early Life History of Antarctic Notothenioid Fish
1991The Antarctic cooled rapidly about 38 million years ago, when significant amounts of sea ice began to form. It became isolated in the last 30–14 million years when the Drake Passage opened to form a circum-Antarctic Ocean, and has generally cooled since then (Kennett 1977).
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