Bioconcentration and biotransformation of 14C-?-hexachlorocyclohexane and 14C-hexachlorobenzene in the Antarctic amphipod Orchomene plebs (Hurley, 1965)

Polar Biology ◽  
1991 ◽  
Vol 11 (4) ◽  
Author(s):  
W. Ernst ◽  
M. Klages
Keyword(s):  
Antarctic Amphipod ◽  
The Antarctic

scholarly journals Metabolic rates of the antarctic amphipod Gondogeneia antarctica at different temperatures and salinities

2013 ◽  
Vol 61 (4) ◽  
pp. 243-249 ◽  
Author(s):  
Vicente Gomes ◽  
Maria José de Arruda Campos Rocha Passos ◽  
Arthur José da Silva Rocha ◽  
Thais da Cruz Alves dos Santos ◽  
Alex Sander Dias Machado ◽  
...  
Keyword(s):  
Energy Demand ◽  
Ammonia Excretion ◽  
Metabolic Rates ◽  
Metabolic Compensation ◽  
Adaptive Mechanisms ◽  
Stable Conditions ◽  
Different Temperatures ◽  
Antarctic Amphipod ◽  
Excretion Rates ◽  
The Antarctic

Changes in environmental factors may deeply affect the energy budget of Antarctic organisms as many of them are stenothermal and/or stenohaline ectotherms. In this context, the aim of this study is to contribute to knowledge on variations in the energy demand of the Antarctic amphipod, Gondogeneia antarctica as a function of temperature and salinity. Experiments were held at the Brazilian Antarctic Station "Comandante Ferraz", under controlled conditions. Animals collected at Admiralty Bay were acclimated to temperatures of 0ºC; 2.5ºC and 5ºC and to salinities of 35, 30 and 25. Thirty measurements were made for each of the nine combinations of the three temperatures and three salinities, totalling 270 measurements. Metabolic rates were assessed by oxygen consumption and total nitrogenous ammonia excretion, in sealed respirometers. When acclimated to salinities 30 or 35, metabolic rates at 0ºC and 2.5ºC were very similar indicating a possible mechanism of metabolic compensation for temperature. At 5.0ºC, however, metabolic rates were always higher. Lower salinities enhanced the effects of temperature on metabolism and ammonia excretion rates. The physiological adaptations of individuals of G. antarctica suggest adaptive mechanisms for energy saving, adjusted to an environment with stable conditions of temperature and salinity. Little is known about the joint effects of salinity and temperature and this study is an important contribution to the understanding of the mechanism of polar organisms in their adaptation to both factors.

Transcriptome of the Antarctic amphipod Gondogeneia antarctica and its response to pollutant exposure

2015 ◽  
Vol 24 ◽  
pp. 253-254 ◽  
Author(s):  
Seunghyun Kang ◽  
Sanghee Kim ◽  
Hyun Park
Keyword(s):  
Antarctic Amphipod ◽  
The Antarctic

Chromosomes of the Antarctic amphipod Waldeckia obesa Chevreux

Hydrobiologia ◽  
1993 ◽  
Vol 262 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Vicente Gomes ◽  
Phan Van Ngan ◽  
Claude de Broyer ◽  
Maria José deA. C. Rocha Passos
Keyword(s):  
Antarctic Amphipod ◽  
The Antarctic

Gnathiphimedia mandibularis K.H. Barnard 1930, an Antarctic amphipod (Acanthonotozomatidae, Crustacea) feeding on Bryozoa

1989 ◽  
Vol 1 (4) ◽  
pp. 343-344 ◽  
Author(s):  
C. Oliver Coleman
Keyword(s):  
Antarctic Ocean ◽  
The Family ◽  
Antarctic Amphipod ◽  
The Antarctic

The family Acanthonotozomatidae is widely distributed, especially in the Antarctic Ocean. Although many acanthonotozomatids are very conspicuous (they are relatively large and often armoured with teeth on tergites and appendages) very little is known about their biology (Just 1978, Coleman 1989).

A study of enzyme polymorphism in the antarctic amphipod Paramoera walkeri Stebbing

Polar Biology ◽  
1990 ◽  
Vol 10 (7) ◽  
Author(s):  
T. Patarnello ◽  
P.M. Bisol ◽  
V. Varotto ◽  
V. Fuser ◽  
B. Battaglia
Keyword(s):  
Enzyme Polymorphism ◽  
Antarctic Amphipod ◽  
The Antarctic

scholarly journals RNA-sequencing indicates high hemocyanin expression as a key strategy for cold adaptation in the Antarctic amphipod Eusirus cf. giganteus clade g3

BIOCELL ◽  
2021 ◽  
Vol 45 (6) ◽  
pp. 1611-1619
Author(s):  
SAMUELE GRECO ◽  
ELISA D’AGOSTINO ◽  
CHIARA MANFRIN ◽  
ANASTASIA SERENA GAETANO ◽  
GAEL FURLANIS ◽  
...  
Keyword(s):  
Rna Sequencing ◽  
Cold Adaptation ◽  
Antarctic Amphipod ◽  
The Antarctic
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