Pawe∏ Brzuzan

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Length variation of the mitochondrial DNA control region was observed with PCR amplification of a sample of 138 whitefish (Coregonus lavaretus). Nucleotide sequences of representative PCR products showed that the variation was due to the presence of an approximately 100-bp motif tandemly repeated two, three, or five times in the region between the conserved(More)
Ripe females of whitefish (Coregonus lavaretus) of Lake Constance were caught at spawning time on their known spawning sites. Fish were examined for their size, gill-raker number, and for their egg dry weight. On the basis of their spawning sites as well as on correlation between body weight and egg weight, fish were allocated at one of the two sympatric(More)
c-myc has a crucial function in growth control, differentiation, and apoptosis of vertebrate cells. Despite the important role of c-myc in mediating the biological effects, studies of c-myc gene expression and factors that control it in organisms other than mammals, such as fish, have been rare. In the current study, we asked whether c-myc mRNA of(More)
After the electrial stimulation Coregoninae embryos secreted the hatching enzyme (chorionase) within 0.1–0.5 h, and the dissolution of their chorions lasted 1.2–2.0 h, depending on embryo's developmental stage (DS 13 or DS 14) and water temperature (5.2 or 9.6–9.8°C). Crude chorionase (hatching liquid) ofCoregonus albula andC. lavaretus was collected in(More)
Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental pollutants. The number of publications every year (Kurihara et al. 2005; Ledesma et al. 2000; Meyer et al. 2005; Oleszczuk and Baran 2005; Russo et al. 2005; Scicchitano 2005; Wolska et al. 2005) may facilitate the understanding of how many disciplines and subjects may be connected with(More)
The mutagenicity of two, newly synthesized amino-derivatives of cyclopenta[c]phenanthrene (CP[c]Ph) was investigated in the Ames test using TA98 and TA100 histidine dependent Salmonella typhimurium strains. Neither of the examined compounds showed mutagenic activity without metabolic activation. The incorporation of an activation system caused high(More)
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