Akvarij NET - FORUM
Slatkovodna Akvaristika => Hladnovodne ribe => Autor teme: mato - Kolovoz 16, 2014, 19:26:48 poslijepodne
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pretpostavljam da ne može, ali
stavio sam u akvarij 3 koi šarana gdje su već zlatni karasi i predvečer vidim kako karasi ganjaju koia, svi na vrpu oko njega, mrijeste se, ali odmah jedu ikru....
jel zna netko jel taj mrijest vrijedi il se oni zezaju tako -? -? -?
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Moguc je mrijest izmedju koia i z.ribice. Dobit ces sterilni hibrid bez brkova, velicinom izmedju z.ribice i koia. Navodno postoje zanimljive kombinacije.
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izvadit ću koie da ih zlatne ne ganjaju, a jesu :devil: X-( :devil:
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pretpostavljam da ne može, ali
stavio sam u akvarij 3 koi šarana gdje su već zlatni karasi i predvečer vidim kako karasi ganjaju koia, svi na vrpu oko njega, mrijeste se, ali odmah jedu ikru....
jel zna netko jel taj mrijest vrijedi il se oni zezaju tako -? -? -?
Karasi su kao i babuške (nastali od babuški, ak se ne varam), svoju ikru mogu podmetnuti drugoj ribi tokom mrijesta da se oplodi, a vole i jesti ikru drugih riba. Ukoliko se križaju dobiješ mlade onda su to karasi a ne koi .
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Zar nisu karasi dobiveni od divljeg šarana?
Križanjem se dobiju hibridi, ne karasi
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Zar nisu karasi dobiveni od divljeg šarana?
Ne, ni blizu šarana.
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Zar nisu karasi dobiveni od divljeg šarana?
Ne, ni blizu šarana.
Ok, nis znala. :-)
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Zar nisu karasi dobiveni od divljeg šarana?
Ne, ni blizu šarana.
http://bs.wikipedia.org/wiki/Zlatna_ribica (http://bs.wikipedia.org/wiki/Zlatna_ribica)
ovdje kažu da spada u porodicu šarana :)
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http://www.sciencedirect.com/science/article/pii/S037811190800543X (http://www.sciencedirect.com/science/article/pii/S037811190800543X)
Many different physical characteristics of goldfish (Carassius auratus auratus), such as celestial and telescopic eyes, fancy but uncontrollable shapes of tail fin, an unfittingly fat body, and loss of dorsal fins, provide us with a unique opportunity of studying artificial selection on phenotypic changes on the basis of molecular evolution. The aim of the present study is to elucidate the evolutionary origin and history of goldfish, taking into account the different characteristics of goldfish and human culture. Collecting 44 samples of a variety of goldfish from Japan and China as well as common and Crucian carps, we determined the nucleotide sequences for a substantial portion of mitochondrial genome including eight gene regions (D-loop, 12SrRNA, 16SrRNA, ND1, ND2, COI, ND5 and Cyt b) of approximately 11,180 bps. We, then, constructed phylogenetic trees for a total of 78 fishes, adding the 19 sequence data available in the international DNA database DDBJ/EMBL/GenBank to our 59 sequence data determined. From the phylogenetic trees obtained, we found that Japanese goldfish are not relative to Japanese Crucian carp (Carassius auratus langsdorfi) and that all the goldfish examined were originated from one of the two groups of the Chinese Crucian carp “Gibelio” (Carassius auratus gibelio). Moreover, we found that the process of artificial selection began from losing the dorsal fin followed by diversification of other characters such as eyes. This is supported by our further observations that the improvement of celestial and telescope eyes took place independently at different times, implying that goldfish was imposed by strong artificial selection only to meet diversified needs of human preferences in a unsystematic way.
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Ja sam isto negdje procitala da mogu, ispadnu super kombinacije. :)
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Ja sam isto negdje procitala da mogu, ispadnu super kombinacije. :)
Ali mislim da ne prirodnim putem, mrijestom.
Nego ovako ...
http://www.biomedcentral.com/1471-2156/15/33 (http://www.biomedcentral.com/1471-2156/15/33)
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Ali mislim da ne prirodnim putem, mrijestom.
Nego ovako ...
http://www.biomedcentral.com/1471-2156/15/33 (http://www.biomedcentral.com/1471-2156/15/33)
Zanimljiv link. Za sada samo u favoritima, ali kada nađem vremena, pročitam. :up:
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Kaj dobijemo kad parimo ZECA i KONJA .... ZEKONJU ;)