Metal (Fe, Zn, Mn and Cu) levels in the Antarctic fish Notothenia coriiceps

Polar Biology ◽  
1998 ◽  
Vol 20 (6) ◽  
pp. 404-408 ◽  
Author(s):  
M. Márquez ◽  
C. Vodopivez ◽  
R. Casaux ◽  
A. Curtosi
2007 ◽  
Vol 24 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Lucélia Donatti ◽  
Edith Fanta

The Antarctic fish Notothenia coriiceps Richardson, 1844 lives in an environment of daily and annual photic variation and retina cells have to adjust morphologically to environmental luminosity. After seven day dark or seven day light acclimation of two groups of fish, retinas were extracted and processed for light and transmission electron microscopy. In seven day dark adapted, retina pigment epithelium melanin granules were aggregated at the basal region of cells, and macrophages were seen adjacent to the apical microvilli, between the photoreceptors. In seven day light adapted epithelium, melanin granules were inside the apical microvilli of epithelial cells and macrophages were absent. The supranuclear region of cones adapted to seven day light had less electron dense cytoplasm, and an endoplasmic reticulum with broad tubules. The mitochondria in the internal segment of cones adapted to seven day light were larger, and less electron dense. The differences in the morphology of cones and pigment epithelial cells indicate that N. coriiceps has retinal structural adjustments presumably optimizing vision in different light conditions.


1989 ◽  
Vol 179 (3) ◽  
pp. 707-713 ◽  
Author(s):  
Rossana D'AVINO ◽  
Carla CARUSO ◽  
Mario ROMANO ◽  
Laura CAMARDELLA ◽  
Bruno RUTIGLIANO ◽  
...  

Polar Biology ◽  
2005 ◽  
Vol 28 (4) ◽  
pp. 326-328 ◽  
Author(s):  
Jos� Roberto Machado Cunha da Silva ◽  
Laercio Ribeiro Porto-Neto ◽  
Jo�o Carlos Shimada Borges ◽  
Bernard Ernesto Jensch-Junior

Polar Biology ◽  
2006 ◽  
Vol 29 (10) ◽  
pp. 831-836 ◽  
Author(s):  
Francisco Javier Hernandez-Blazquez ◽  
Ricardo Romão Guerra ◽  
José Roberto Kfoury ◽  
Pedro Primo Bombonato ◽  
Bruno Cogliati ◽  
...  

2003 ◽  
Vol 15 (4) ◽  
pp. 458-462 ◽  
Author(s):  
EDITH FANTA ◽  
FLAVIA SANT'ANNA RIOS ◽  
LUCÉLIA DONATTI ◽  
WAGNER ELIAS CARDOSO

An index of integrated food preferences (IFA) of Notothenia coriiceps Richardson at two sites in Admiralty Bay (Ipanema and Smok Point), calculated for two sequential summers, showed that during 1998/99, the most important food item was Euphausia superba (krill) at both Ipanema (IFA = 0.83) and Smok Point (IFA = 0.75), while the sum of all other food items was significantly smaller (IFA respectively 0.21 and 0.26). Macroalgae, gammarid amphipods and gastropods dominated the diet in the summer 1999/00 (IFA respectively 0.32, 0.32 and 0.21), at Ipanema, while macroalgae were dominant at Smok (IFA = 0.67), where krill and amphipods were secondary prey (IFA respectively 0.12 and 0.14) and gastropods were absent. Thus, the diet composition of N. coriiceps can possibly be used as an indicator of the presence of pelagic krill swarms.


Structure ◽  
2003 ◽  
Vol 11 (4) ◽  
pp. 435-443 ◽  
Author(s):  
Clemente Capasso ◽  
Vincenzo Carginale ◽  
Orlando Crescenzi ◽  
Daniela Di Maro ◽  
Elio Parisi ◽  
...  

Extremophiles ◽  
2006 ◽  
Vol 10 (6) ◽  
pp. 537-549 ◽  
Author(s):  
Sandra Pucciarelli ◽  
Sandra K. Parker ◽  
H. William Detrich ◽  
Ronald Melki

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