The goldfish: Carassius auratus?

0093960 - ÚŽFG 2008 RIV HR eng C - Konferenční příspěvek (zahraniční konf.)
Kalous, Lukáš - Rylková, K. - Šlechtová, Vendula - Bohlen, Jörg - Petrtýl, M.
The goldfish: Carassius auratus?
[Zlata rybka: Carassius auratus?]
Book of Abstracts from XII. European Congress of Ichthyology. Zagreb: Tipomat, 2007, s. 11-12.
[European Congress of Ichthyology /12./. Cavtat (Dubrovnik) (HR), 09.09.2007-13.09.2007]
Grant CEP: GA ČR GA206/05/2159
Výzkumný záměr: CEZ:AV0Z50450515
Klíčová slova: Carassius auratus
Kód oboru RIV: EG - Zoologie

Goldfish is pan-globally distributed and well known to everybody. Goldfish is maybe the most important pet fish and lab fish of the world. All varieties are traditionally considered to be Carassius auratus, a species that was described by Linnaeus on the basis of a red coloured specimen with trilobed caudal fin. Despite the wide phenotypic variability of the ornamental forms they are generally considered to represent a monophyletic lineage that due to domestication developed out of the Silver Prussian carp, C. gibelio. However, this monophyly has never been proven, and since C. gibelio has a vast area of distribution across most of Eurasia, multiple domestication events may have occurred, like it has recently been discovered in cattle and dogs. Another unsolved problem with the goldfish is its phylogenetic position within the genus Carassius, since also the sister-relationship between C. auratus and C. gibelio has never been proven. Here we present the results of a reconstructed genealogy of 46 individuals of the genus Carassius based on unique sequences of mitochondrial gene cytochrome b. The samples originated from different parts of Eurasia and included different varieties of domesticated fancy goldfish as well as feral populations and specimens of other representatives of the genus Carassius. Despite of substantial morphological variability among the sampled individuals, the analyses of sequence of mitochondrial gene cytochrome b have shown no significant differences among haplotypes of fancy goldfish. Individuals from European feral populations of goldfish formed one clade with fancy varieties of C. auratus and did not show significant genetic differences. This indicates that all goldfish form a monophyletic lineage; indicating that the origin of all ornamental goldfish was a single domesticated event. The clade of C. auratus includes also individuals from the area of Yangtze River basin. Interestingly, this area has already been considered on the basis of historic records as the area where Goldfish domestication began.

Karas zlaty (zlata rybka) je celosvetove rozsiren a dobre znam vetsine lidi, jedna se zrejme o nedulezıtejsı chovanou rybu sveta a to jak pro laboratorni ucely tak predevsım jako akvarijni druh. Vsechny variety jsou tradicne razeny do druhu Carassius auratus, coz je taxon, ktery popsal Linne. Ackolıv je znama velka fenotypova variabilita, tradıcne se predpoklada, ze se jedna o monofyletickou linii, ktera se diky domestikaci vyvinula karase stribriteho C. gibelio. Tento predpoklad monofyletickeho puvodu vsak nebyl nikdy potvrzen.Rozsireni karase stribriteho zaujima temer celou Eurasii, proto je na miste predpokladat vetsı mnozstvı domestikacnich pocinu, stejne jako bylo v soucasnostı objeveno naprıklad u kocek nebo psu. Dalsim nevyresenym problemem u karase zlateho je jeho fylogenetıcka pozice v ramci rodu Carassius a jeho vztah ke karasovı stribritemu C. gibelio nebyl blize objasnen. V nasem prıspevku prezentujem vysledky rekonstruovane geneaologie 46 jedıncu rodu Carassius zalozenou na unıkatnıch sekvencıch mt DNA genu cytochrome b. Vzorky pochazejı z ruznych casti Eurasie a zahrnujı ruzne variety domestıkovane zlate rybky stejne jako jejı zdıvocele populace a dalsı zastupce rodu genus Carassius. Ackoliv mezi jedınci byla znacna morfologicka variabilıta analyza sekvenacnich dat neukazala sıgnifikantni rozdily mezi haplotypy jednotlıvych zastupcu zlatych rybek. Jedınci z evropskychferalnich populaci zlate rybky tvorili jeden klad s domestıkovanymi varıetami C. auratus a neukazaly sıgnıfikantni geneticke rozdily. Nase studie vypovida o zrejme monofyletıckem puvodu ornamentalnich zlatych rybek a o jednom hıstorickem. Klad C. auratus zahrnuje take jedince z oblastı reky Yangtze. Je zajimave ze prave tato oblast je hıstorıcky pokladana za mısto pocatku domestıkace zlatych rybek.
Trvalý link: http://hdl.handle.net/11104/0153860