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| rdf:type
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| Description
| - The Silver crucian carp (Carassius auratus) is considered an alien invasive species in the Czech Republic, having immigrated it from the Danube around 1976. C. auratus has become thoroughly naturalised and produced numerous stable populations. The initial populations that occupied the new range consisted of triploid females only. After 1990 the initial unisexual female (triploid) populations began transforming into mixed ones, consisting of both females and males. At present, diploid individuals predominate among the males, with triploid ones occurring occasionally. Among the females, triploid individuals and less frequent diploid ones predominate, while tetraploid ones are found quite rarely. The mixed populations reproduce both gynogenetically and sexually. The native species, C. carassius and T. tinca, previously abundant, vanished from localities by C. auratus. From the natural habitats, C. auratus is the registered bags 25-50 tonnes annually.
- The Silver crucian carp (Carassius auratus) is considered an alien invasive species in the Czech Republic, having immigrated it from the Danube around 1976. C. auratus has become thoroughly naturalised and produced numerous stable populations. The initial populations that occupied the new range consisted of triploid females only. After 1990 the initial unisexual female (triploid) populations began transforming into mixed ones, consisting of both females and males. At present, diploid individuals predominate among the males, with triploid ones occurring occasionally. Among the females, triploid individuals and less frequent diploid ones predominate, while tetraploid ones are found quite rarely. The mixed populations reproduce both gynogenetically and sexually. The native species, C. carassius and T. tinca, previously abundant, vanished from localities by C. auratus. From the natural habitats, C. auratus is the registered bags 25-50 tonnes annually. (en)
- Karas stříbřitý (Carassius auratus), je pro ČR hodnocen jako invazivní nepůvodní druh, který tam imigroval z Dunaje okolo roku 1976. C. auratus se zcela naturalizoval a vytvořil početné stabilní populace. Po roce 1990 začal proces transformace původní jednopohlavní samičí (triploidní) populace, na populace smíšené tvořené samicemi i samci. U samců v současnosti převládají jedinci diploidní, ojediněle se vyskytují triploidi, u samic převažují jedinci triploidní a v menší míře jedinci diploidní. Zcela vzácně jsou nalezeni i tetraploidní jedinci. Ve smíšených populacích se uplatňuje jak gynogenetická pohlavní reprodukce. K objasnění procesu transformace jsou prováděny pokusy s umělou hybridizací jedinců s různou ploidií. C. auratus ohrožuje původní ichtyofaunu. V lokalitách s dominancí C. auratus vymizely původně hojné nativní druhy Carassius carassius a Tinca tinca. Z přírodních biotopů je C.auratus odlovován na udici a jeho evidovaný úlovek dosahuje ročně 50-60 tun. (cs)
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| Title
| - Carassius auratus, the most succesful invasive species in the waters of the Czech Republic
- Karas stříbřitý nejúspěšnější invazivní druh ve vodách České republiky (cs)
- Carassius auratus, the most succesful invasive species in the waters of the Czech Republic (en)
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| skos:prefLabel
| - Carassius auratus, the most succesful invasive species in the waters of the Czech Republic
- Karas stříbřitý nejúspěšnější invazivní druh ve vodách České republiky (cs)
- Carassius auratus, the most succesful invasive species in the waters of the Czech Republic (en)
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| skos:notation
| - RIV/68081766:_____/05:00029514!RIV06-AV0-68081766
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA206/05/2159), Z(AV0Z60930519)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68081766:_____/05:00029514
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - II International symposium Alien species in Holarctic (Borok - 2)
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Lusk, Stanislav
- Lusková, Věra
- Halačka, Karel
- Vetešník, Lukáš
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| http://linked.open...n/vavai/riv/zamer
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
| - Rossijskaja Akademija nauk
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| https://schema.org/isbn
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