General information |
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| Coregonus lavaretus (Linnaeus, 1758) | ||
| Common name | European whitefish | |
| Synonyms |
- |
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| IUCN Red List status (2014) | Vulnerable (VU) |
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| Habitat | Saltwater and freshwater |
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| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Protacanthopterygii; Salmoniformes; Salmonidae. |
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| Geographical distribution | Japan; Iran; Kazakhstan; Kyrgyzstan; Turkey; Russia; UK; Germany; France; Italy; Greece; Bulgaria; Ukraine; Romania; Norway; Sweden; Denmark; Ireland; Finland; Belgium; Netherlands; Albania; Austria; Czech Republic; Estonia; Faroe Islands; Isle of Man; Latvia; Lithuania; Poland; Serbia; Slovakia; Svalbard and Jan Mayen; Switzerland |
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| Occurrence | Introduced: Japan, Iran, Kyrgyzstan, Turkey, Germany, Italy, Greece, Bulgaria, Romania, Belgium, Czech Republic, Serbia, Slovakia Native: Kazakhstan, Russia, UK, France, Denmark, Estonia, Switzerland Questionable: Ukraine, Norway, Sweden, Finland, Albania, Austria, Faroe Islands, Isle of Man, Latvia, Lithuania, Poland, Svalbard and Jan Mayen Error: Ireland Not established: Netherlands |
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| Importance | ||
| Remarks | Short arms of chromosomes 1 have a relative length equal to 1.1-1.3 of the size of largest submetacentric pair. |
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Karyological information |
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| Geographical area of study | Bracciano, Martignano lakes in Rome and Bolsena lake in Viterbo, Italy. | |
| Source of chromosomes | Cephalic kidney cells. |
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| Number of specimens with sex | 43 |
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| Diploid chromosome number | 80 |
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| Karyotype formula | 12m+4sm+64st/a |
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| Fundamental arm number | - |
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| Chromosome length | - |
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| Sex chromosome | - |
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| Chromosome staining/banding/FISH | Maximum 2 heteromorphic active Ag-NORs detected. CMA3 staining showed presence of upto 8 sites. C-banding showed, in addition to centromeres, that both GC-rich NORs and the AT-rich terminal chromosome regions were C-positive. FISH signals with 45S rDNA probe observed in different chromosome pairs (8 in Bracciano population, 10 in Martignano population and up to 12 in Bolsena population. 5S rDNA hybridized to 3 pairs of homologues chromosomes. Telomeric probe hybridized to telomeres regions. |
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| Reference(s) |
Rossi AR, Gornung E (2005). Cytogenetic analysis of three Italian populations of Coregonus lavaretus (Pisces, Salmoniformes) with chromosomal localization of major and minor ribosomal genes, and telomeric repeats. Hereditas, 142: 15-21. |
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