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[Clonal and population RAPD variation of cercariae obtained from Bucephalus polymorphus sporocysts (Trematoda: Bucephalidae)]. 2009

A V Korsunenko, and A V Tiutin, and S K Semenova

Three arbitrary primers produced 114 RAPD markers for 37 cercariae from nine Bucephalus polymorphus sporocysts obtained from three Dreissena polymorpha mollusks, which were collected in two water reservoirs of the Volga basin. Analysis of the RAPD patterns established a unique genotype for each cercaria. The topology of an UPGMA dendrogram did not reliably differentiate the cercaria according to the corresponding sporocysts. However, three groups of genotypes were isolated and corresponded to the host mollusks, indicating that each cercaria clone had a different genotype set. A within-sporocyst variation made the greatest contribution (53.0%) to the total RAPD diversity, while the contributions of within-host and between-host variations to the total diversity were equal (23.5%). Cercariae isolated from two mollusks of the Rybinsk Water Reservoir were more similar to each other than to cercariae from the geographically distant Gor'kovskoe Water Reservoir. Possible causes and distribution specifics of the observed genetic diversity of B. polymorphus are discussed.

UI MeSH Term Description Entries
D005828 Genetics, Population The discipline studying genetic composition of populations and effects of factors such as GENETIC SELECTION, population size, MUTATION, migration, and GENETIC DRIFT on the frequencies of various GENOTYPES and PHENOTYPES using a variety of GENETIC TECHNIQUES. Population Genetics
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012426 Russia A country located in north Asia bordering the Arctic Ocean, extending from Europe (the portion west of the Urals) to the North Pacific Ocean. The capital is Moscow. Russian S.F.S.R.,Russian Federation (Europe),Russian SFSR
D014200 Trematoda Class of parasitic flukes consisting of subclasses Aspidogastrea and Digenea. The digenetic trematodes are the only ones found in man. They are endoparasites and require two hosts to complete their life cycle. Aspidogastrea,Digenea,Flukes,Petasiger,Echinochasmus,Himasthla,Paryphostomum,Troglotrema,Aspidogastreas,Digeneas,Fluke,Himasthlas,Paryphostomums,Petasigers,Trematodas,Troglotremas
D014644 Genetic Variation Genotypic differences observed among individuals in a population. Genetic Diversity,Variation, Genetic,Diversity, Genetic,Diversities, Genetic,Genetic Diversities,Genetic Variations,Variations, Genetic
D019105 Random Amplified Polymorphic DNA Technique Technique that utilizes low-stringency polymerase chain reaction (PCR) amplification with single primers of arbitrary sequence to generate strain-specific arrays of anonymous DNA fragments. RAPD technique may be used to determine taxonomic identity, assess kinship relationships, analyze mixed genome samples, and create specific probes. RAPD Technique,RAPD-PCR,Arbitrarily Primed PCR Reaction,RAPD Technic,Random Amplified Polymorphic DNA Technic,RAPD Technics,RAPD Techniques
D033661 Oocysts Zygote-containing cysts of sporozoan protozoa. Further development in an oocyst produces small individual infective organisms called SPOROZOITES. Then, depending on the genus, the entire oocyst is called a sporocyst or the oocyst contains multiple sporocysts encapsulating the sporozoites. Sporocysts,Oocyst,Sporocyst

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