scholarly journals Changes in lipid composition of the Antarctic krill Euphausia superba in the Indian sector of the Antarctic Ocean:influence of geographical location, sexual maturity stage and distribution among organs

1998 ◽  
Vol 173 ◽  
pp. 149-162 ◽  
Author(s):  
P Mayzaud ◽  
E Albessard ◽  
J Cuzin-Roudy
Keyword(s):  
Lipid Composition ◽  
Sexual Maturity ◽  
Antarctic Krill ◽  
Geographical Location ◽  
Euphausia Superba ◽  
Maturity Stage ◽  
The Antarctic ◽  
Indian Sector ◽  
Antarctic Krill Euphausia Superba

Circumpolar occurrence of eugregarinid protozoanCephaloidophora pacificaassociated with Antarctic krill,Euphausia superba

2008 ◽  
Vol 20 (5) ◽  
pp. 437-440 ◽  
Author(s):  
Kunio T. Takahashi ◽  
Masaki Kobayashi ◽  
So Kawaguchi ◽  
Junko Saigusa ◽  
Atsushi Tanimura ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Antarctic Krill ◽  
Geographical Location ◽  
Protozoan Parasite ◽  
Euphausia Superba ◽  
Maturity Stage ◽  
Syowa Station ◽  
Frequency Distributions ◽  
The Mean ◽  
The Antarctic

AbstractThe geographical distribution of protozoan parasiteCephaloidophora pacificaAvdeev (Order Eugregarininda) associated with Antarctic krill,Euphausia superba, was examined in samples collected from the vicinity of the Antarctic Peninsula, near Syowa Station, and Pacific and Indian sectors of the Southern Ocean.Cephaloidophora pacificawas found at all stations around the Antarctic, with 96.4% of the euphausiids infected (n = 195). The numbers ofC. pacificaper krill ranged from 0 to 8089 krill-1, and the average was 350.0 ± 787.8 (mean ± SD). The frequency distributions ofC. pacificashowed an overdispersed parasite population (i.e. the variance was greater than the mean) at all locations. Statistical analysis showed that whilst the geographical location did not have a significant effect on intensity ofC. pacificathe maturity stage of krill did, with an increasing intensity of infection as krill matures. The infestation ofE. superbaby eugregarinid protozoan is considered to be a circum-Antarctic phenomenon, and it occurs equally throughout the Southern Ocean.

Observations on moulting in Antarctic Krill (Euphausia superba Dana)

1982 ◽  
Vol 33 (1) ◽  
pp. 71 ◽  
Author(s):  
T Ikeda ◽  
P Dixon
Keyword(s):  
Phaeodactylum Tricornutum ◽  
Antarctic Krill ◽  
Dry Weight ◽  
Euphausia Superba ◽  
Dunaliella Tertiolecta ◽  
Antarctic Ocean ◽  
Fish Food ◽  
Antarctic Waters ◽  
The Antarctic ◽  
Antarctic Krill Euphausia Superba

Live E. superba were transported from Antarctic waters to a tropical laboratory where observations at the temperature of -0.5�C (0 to - 1.0�C), were made of intermoult period of specimens fed a mixture of microalgae (Dunaliella tertiolecta and Phaeodactylum tricornutum) or artificial pet fish food or starved. Mean intermoult period was 26.4-27.1 days for fed specimens and 29.6 days for starved specimens, with no relation to the size of specimens. The moult accounted for a loss of 2.63-4.35% of animal dry weight, which is equivalent to 1.1-1.8% of animal nitrogen or 1.4-2.3% of animal carbon. The contribution of moults to detritus in the Antarctic Ocean was estimated as 0.11 g C m-2 per year.

Ultrastructure of the Fertilized Egg of the Antarctic Krill Euphausia Superba

1985 ◽  
Vol 5 (3) ◽  
pp. 430-438 ◽  
Author(s):  
R. M. Dillaman ◽  
R. Y. George ◽  
J.-O. Strömberg
Keyword(s):  
Antarctic Krill ◽  
Euphausia Superba ◽  
The Antarctic ◽  
Fertilized Egg ◽  
Antarctic Krill Euphausia Superba

scholarly journals Gone with the currents: lack of genetic differentiation at the circum-continental scale in the Antarctic krill Euphausia superba

BMC Genetics ◽  
2011 ◽  
Vol 12 (1) ◽  
pp. 32 ◽  
Author(s):  
Erica Bortolotto ◽  
Ann Bucklin ◽  
Massimo Mezzavilla ◽  
Lorenzo Zane ◽  
Tomaso Patarnello
Keyword(s):  
Genetic Differentiation ◽  
Antarctic Krill ◽  
Euphausia Superba ◽  
Continental Scale ◽  
The Antarctic ◽  
Antarctic Krill Euphausia Superba
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