Consulta: creatorFacets:"Wolowicz, Maciej"
Registros recuperados: 3
Data/hora: 07/06/2024 05:05:54

Ultrastructural study of neoplastic cells in Macoma balthica (Bivalvia) from the Gulf of Gdansk (Poland)
Provedor de dados: 5
Autores: Smolarz, Kasia; Renault, Tristan; Wolowicz, Maciej.
In the Baltic clam Macoma balthica from the Gulf of Gdansk, neoplasia is considered as a serious epizootic linked to bad environmental conditions and high levels of pollutants. Previous research was focused on the diagnosis, prevalence, seasonality and histopathological characteristic of the cancer. This study is focused on electron microscopy analyses describing cell ultrastructure abnormalities related to neoplasia. Examinations using the electron microscopy highlighted changes confined to anatomic ultrastructures, shapes and functions of neoplastic cells. The lobulated appearance of the nucleus, changes in cellular matrix and the occurrence of large granular cells with hyperchromatic nuclei, atypical Golgi structures and deterioration of rough...
Tipo: Text
Palavras-chave: Gulf of Gdansk; Macoma balthica; Neoplasia; Myofibroblast like cells; Cell ultrastructures.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1689.pdf

Comparative analysis of oxygen consumption rates between cupped oyster spat of Crassostrea gigas of French, Japanese, Spanish and Taiwanese origins
Provedor de dados: 5
Autores: Goulletquer, Philippe; Wolowicz, Maciej; Latala, Adam; Geairon, Philippe; Huvet, Arnaud; Boudry, Pierre.
Respiration rates of various geographical strains of Crassostrea gigas were compared to assess the respiratory expenditure as a physiological indicator of catabolism (cost of maintenance). Parental oysters, sampled in France (Marennes-Oleron), Japan (Hiroshima), Taiwan (Tunkang) and Spain (Cadix), were differentiated by both their geographic origin and by mitochondrial DNA markers, allowing the distinction between the two closely related taxa Crassostrea gigas and Crassostrea angulata. After reproduction of these parental oysters, respiration rates of spat of each strain, reared under common controlled conditions, were individually estimated at 20 degrees C by using a volumetric microrespirometer. Our results demonstrated that physiological variability...
Tipo: Text
Palavras-chave: Pacific Ocean; NE Atlantic; Oyster strains; Hybrids; Crassostrea angulata; Crassostrea gigas; Metabolism; Respiration rates; Océan Pacifique; Atlantique NE; Souches génétiques; Hybrides; Crassostrea angulata; Crassostrea gigas; Métabolisme; Taux de respiration.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/publication-859.pdf

Application of a micro-respirometric volumetric method to respiratory measurements of larvae of the Pacific oyster Crassostrea gigas
Provedor de dados: 5
Autores: Goulletquer, Philippe; Wolowicz, Maciej; Latala, Adam; Brown, Craig; Cragg, Simon.
The application of a simple, fast and reliable volumetric microrespirometric method to assess respiration of bivalve larvae is discussed. As a model, C. gigas larvae of various sizes were used. Metabolic activity of veliger larvae was assessed by measuring respiratory rate for use in ecophysiological modelling. As an example of the application of this approach, additional measurements of veliger respiratory rates were carried out to assess the effect on larval metabolism of different concentrations of leachate from wood treated with chromated copper-arsenate (CCA). Veligers of Crassostrea gigas (length from 95 to 331 pm) were fed with a mixture of Isochrysis galbana) and Chaetoceros pumilum cells. Experiments were performed in a 20 degreesC constant...
Tipo: Text
Palavras-chave: Crassostrea gigas; Leachate; CCA; Volumetric micro respirometry; Larvae; Metabolism; Respiratory rate.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-399.pdf