Notothenia

Notothenia

 

a genus of fish of the order Perciformes. The mouth is small, and there are no canine teeth. There are usually two lateral lines. The genus contains approximately 30 species, which are distributed mainly in Antarctica, along the shores of Patagonia and the subantarctic islands. N. kempi, the most widely distributed species, is found along the coasts of Antarctica. A deep-water fish, it inhabits depths to 830 m. Other common species are N. rossi, N. squamifrons, and N. gibberifrons, which are trawled along the South Georgia and Kerguelen islands. The largest species, N. rossi, is up to 90 cm long and weighs up to 9 kg. The adult form has a spotty-marble coloration. The fish live in bays for five or six years and, upon reaching sexual maturity, enter the open sea, where they feed on krill. Fecundity is 30,000–90,000 eggs, which lay on the bottom. Spawning occurs in the autumn or winter. The fish is very tasty, particularly in the form of a smoked or cured fillet.

A. P. ANDRIIATEV and A. V. NEELOV [18–4–11–2]

References in periodicals archive ?
In this proposal, three target notothenioid species will be taken into account: two extreme stenotherms adapted to polar conditions, Notothenia rossii and Champsocephalus gunnari and the subpolar eurytherm Eleginops maclovinus.
In consequence, O'Neil (1980b) demonstrated that the time required for MS2 bacteriophage clearance in brown trout, carp and Notothenia rossii was increased when the water temperature was reduced.
Nos intestinos anteriores e medios foram identificadas celulas que apresentavam inclusoes citoplasmaticas na forma de bastoes, as quais sao descritas na literatura como celulas bastonetes roalet cells (MANERA; DEZFULI, 2004) ou como celulas com granulos em bastonete, encontradas no peixe antartico Notothenia neglecta (HERNANDEZ-BLAZQUEZ et al.
Effect of starvation and experimental feeding on the proximate composition and caloric content of an Antarctic teleost, Notothenia coriiceps neglecta.
Notothenioid fishes known to utilize sponges as spawning and nesting sites include emerald rock-cod, Notothenia bernacchii (Moreno, 1980) and Antarctic spiny plunderfish, Harpagifer antarcticus (Daniels, 1978).
Studies of tubulin in the An tarctic fish, Notothenia corriceps suggest that there is an increased reliance on hydrophobic interactions that underlies the energetics of microtubule formation at low temperatures.
Seasonal and annual growth rates in the Antarctic fish Notothenia coriiceps Richardson.
Gill structure of antartic fishes Notothenia (Gobinotothen) gibberifrons and trematomusnewnesi (Notothenidae) stressed by salinity changes and some behavioral consequences.