Geneticke sekvenovanie Neokaridiny (ENG)

Morfológia a anatómia krevetiek
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Milos
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Geneticke sekvenovanie Neokaridiny (ENG)

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Neokaridiny sa stali modelovym organizmom v biologii a pri tej prilezitosti im oscanovali genom:

Genomic Sequence and Experimental Tractability of a New Decapod Shrimp Model, Neocaridina denticulata.

Keywords:
genomics; evolution; biotechnology; arthropods; crustaceans; decapod; shrimp

http://www.mdpi.com/1660-3397/12/3/1419/htm
Chovam: taiwan bee, taiwan hybrid, sulawesi kardinal, CRS, CBS, bloody mary, blue velvet, blue topas

Milos
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Dátum registrácie: 03 Okt 2014, 21:17
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Re: Geneticke sekvenovanie Neokaridiny (ENG)

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Dole je abstrakt a link na studium o populacnej genetike C.cantonensis z potokov v Hong-Kongu. Prelozene to ludskeho jazyka to znamena asi tolko, ze rovnako ako v akvariach, vo volnej prirode sa tieto krevetky tiez prilis nemiesaju a vacsina rozmnozovania sa deje v ramci malych uzavretych populacii, takze netreba mat asi prilis strach z pribuzenskeho krizenia:

Abstract. Caridina cantonensisYu 1938 is an atyid shrimp that is widespread in southern China,including Hong Kong. It is a fully freshwater species with anabbreviatedlarval development lackingplanktonic stages. The population genetics ofC. cantonensisin Hong Kong streams was studied atinter- and intradrainage scales using random amplified polymorphic DNA(RAPD) markers. Shrimpsdisplayed low levels of within-population genetic variation (#20% of total genotypic variance) buthigh levels of among-population variation (.50% of total genotypic variance) at both scales. Highinterdrainage genetic differentiation indicated that dispersal among catchments was limited, whereashigh differentiation among populations at the intradrainage scale mainly resulted from natural bar-riers such as waterfalls. The effect of man-made barriers on population differentiation at the intrad-rainage scale was less marked than at the interdraineage scale. Levels of gene flow among populationswithin and among drainage systems were low, the estimated number of effective migrants/generation(Nem)was,0.1, and there was a trend toward relatively fewer alleles and lower heterozygosity inupstream populations than in downstream populations. Genetic differentiation between lowland pop-ulations from adjacent drainages was lower than for other pairwise combinations of populations,suggesting that interdrainage dispersal is likely during floods. The genetic structure ofC. cantonensispopulations in Hong Kong streams indicates that adaptation to local conditions in individual streamsor sites within streams probablyoccurred. At a regional scale, this process might account for thelarge number of stenotopic species ofCaridinain Asia.
https://www.researchgate.net/publicatio ... ng_streams
Chovam: taiwan bee, taiwan hybrid, sulawesi kardinal, CRS, CBS, bloody mary, blue velvet, blue topas

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