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1

Active chloride cell density in some tissues of rainbow trout (Oncorhynchus mykiss Walbaum, 1792) larvae during the early development stage

100%
Calta M.
Folia Biologica
|
2002
|
vol. 50
|
issue 1-2
91-94
EN
In this study, active chloride cell density in some tissues (gill arch epithelium, skin, and yolk-sac membrane) of rainbow trout (Oncorhynchus mykiss Walbaum, 1792) larvae during the early development stage was investigated using a vital fluorescence staining technique. It was found that the numbers of active chloride cells were very variable, depending on the tissue and age of the larvae. Active chloride cells were most abundant in the skin and yolk-sac membrane, but less so in the gill arch epithelium of newly hatched larvae. With larval age, the density of active chloride cells in the gill epithelium increased, while that in the skin and yolk-sac membrane decreased.
2

Evidence for the possible existence of a remnant L-gulono-gamma-lactone oxidase (GULO) gene in a teleost genome

63%
Ocalewicz K., Dabrowski K., Mambrini M.
Folia Biologica
|
2010
|
vol. 58
|
issue 1-2
51-54
EN
DNA fragments related to the cloudy catshark Scyliorhinus torazame L-gulono-gamma- -lactone oxidase (GULO) cDNA were detected in a distant fish species. Although the Southern hybridization pattern was more distinct in species with active GULO, DNA fragments related to the GULO gene were also discovered in the common carp Cyprinus carpio. Additionally, in the common carp, inter-individual variation of the hybridization pattern was observed. Regular screening of available teleost fish gene libraries did not reveal GULO related DNA sequences.
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