Results 151 to 160 of about 1,110 (179)
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Egg envelope organisation in the icefish Chionodraco hamatus
Polar Biology, 2004Antarctic teleosts perform their physiological activities at constant subzero temperatures. We previously described the gross morphology and the biochemical composition of the Antarctic teleost Chionodraco hamatus eggshell. In this work, we investigate thoroughly the chorion ultrastructure, showing a previously unknown external layer, and describe the ...
Sabrina Meloni +8 more
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Do the hemoglobinless icefishes have globin genes?
Comparative Biochemistry and Physiology Part A: Physiology, 1997Abstract Among piscine taxa, the Antarctic icefishes (family Channichthyidae) prosper in the absence of erythrocytes and hemoglobin, a unique condition among adult vertebrates. The genomes of three icefish species and four red-blooded notothenioid species were probed using α- and β-globin cDNA from the red-blooded Antarctic fish Notothenia coriiceps
Ennio Cocca +6 more
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The heart of the Antarctic icefish as paradigm of cold adaptation
Journal of Thermal Biology, 1997Abstract The stenothermal Antarctic fishes, particularly the hemoglobinless icefish, have developed biochemical, metabolic and morpho-functional features of cardiac performance that can help to decipher some mechanisms underlying cardiac cold adaptation.
B. Tota +4 more
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Extraordinary creatures: notothenioids and icefish
Journal of Experimental BiologyNotothenioids are fish capable of surviving in the sub-zero waters surrounding Antarctica. Equipped with antifreeze proteins for protection, they are benthic, living on the bottom of the sea, feeding on krill and other fish. Many are sit-and-wait predators, moving little with relatively low metabolic rates. A subgroup of the notothenioids, the icefish,
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Diet of the zooplanktivorous icefish Neosalanx pseudotaihuensis Zhang
Hydrobiologia, 2001The icefish Neosalanx pseudotaihuensis (Salangidae) is a small transparent fish with a life cycle of about one year. This fish species is increasingly introduced to waterbodies in China in order to enhance fish production. Diet of the icefish was investigated from the 1996 cohort (June 1996–April 1997) in Xujiahe Reservoir (central China).
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Icefish and Other Genetic Anomalies and an Argument for Vestigiality
2011If one watches the embryonic development of a mammal, say a mouse, one sees a gradual increase in complexity as a single cell multiplies and develops into tissues and organs. But it does so in steps. The heart, for example, rather than forming as an intact entity begins as a blood vessel that folds to form two distinct chambers, which are ...
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Accumulation of untranslated metallothionein mRNA in antarctic hemoglobinless fish (icefish)
1999Icefish (Notothenioidei, Channichthyidae) are a group of Antarctic fish displaying unique phenotype characteristics. Besides the reported lack of hemoglobin, icefish have a very low metallothionein (MT) content compared to Antarctic red-blooded fish. Despite the low amount of MT protein in icefish, cDNA encoding two MT isoforms could be produced from ...
Carginale V +7 more
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