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Aktualnie na terytorium Polski najbardziej zagrożonych jest 37 taksonów minogów i ryb. W najwyższych kategoriach (EXP, EW, CR) znajdują się gatunki anadromiczne (jesiotr ostronosy Acipenser oxyrhynchus, łosoś Salmo salar, minóg morski Petromyzon marinus, parposz Alosa fallax, aloza A. alosa, certa Vimba vimba, ciosa Pelecus cultratus, minóg rzeczny Lampetra fluviatilis) oraz głowacica (Hucho hucho)...
Eighty five faecal samples of the Svalbard reindeer inhabiting the coastal terrace of the northern side of Hornsund were collected in July 2005 and analyzed coprologically. The standard flotation method revealed a 97.6% prevalence of infection at an average intensity of 20 eggs in a single subsample. The quantitative, modified McMaster method helped to estimate the mean number of eggs in a gram of...
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