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• W2364454402 abstract "Pengze crucian carp(Carassius auratus of pengze),a popular cultural fish in China,is an endemic bisexual population with natural gynogenetic reproduction mode.Interestingly,natural populations of this fish consist of a minor portion(no more than 20%) of males.It was reported that Pengze crucian carp had a high genetic kinship to the clone A in the silver crucian carp,and belonged to one of clones of the silver crucian carp.However,the previous investigations on the morphology and cytogenetics indicated that there were two distinguishable gynogenetic clones of pengze crucian carp,named clone H and clone L,respectively.It is necessary for using direct molecular evidence to prove if the population of Pengze crucian carp includes some gynogenetic clones.In this study,the two clones(H and L) of gynogenetic pengze crucian carp were analyzed by the random amplified polymorphic DNA(RAPD)technique,using 30 10-nucleotide-long random primers,and twenty-eight primers produced well-amplified DNA fragments.Similar banding patterns were observed among individuals within each gynogenetic clone,whereas obvious differences were detected between the two gynogenetic clones.Using these informative band patterns produced by the 28 primers,all individual,a total of 2,154 distinguishable DNA fragments(215 per individual),including universal and specific,with data coded as a vector of 1 or 0,representing band presence or absence,respectively.Genetic distance matrices among these individuals of two clones were estimated based on the method of Lynch.The results indicated that the genetic distances of clone H are 0.013761—0.044084,clone L are 0.014085—0.046948,and between clone H and clone L are 0.333333—0.368910.The average genetic distances within clone H and L were 0.018070±0.015489 and 0.017827±0.015203,respectively,and which was 0.352511±0.009692 between the two clones.Average genetic distances within and between the two clones clearly indicated their intraclonal homogeneity and interclonal heterogeneity.A total of 91 polymorphic fragments were scored from 28 primers after excluding bands that were monomorphic for the two clones.These polymorphic fragments showed the genetic diversity of the population of Pengze crucian carp.Some primers,for example Opj15,Opp8,Opq11,Opq14 and so on,produced abundant and reproducible banding patterns that could be efficiently used to discriminate between the two gynogenetic clones.At the same time,according to the genetic distance among these individuals of two clones,a phylogenetic tree was constructed using Neighbor-Joining program in MEGA3.1.The dendrogram of 10 individuals in the two clones showed their origin and relationship.All individuals in the clone H were clustered into one group,and all individuals from the clone L were clustered into another group.The difference based on detection of RAPD molecular markers provided more evidence for the genetic diversity of Pengze crucian carp,and identified two gynogenetic clones were obviously existent in the population of Pengze crucian carp.This study results further indicate that it is a general phenomena with natural gynogenetic fishes including a lot of gynogenetic clones.As the silver crucian carp,the genetic diversity of the gynogenetic Pengze crucian carp will likely benefit evolutionary genetics studies of unisexual vertebrates and selective breeding of Pengze crucian carp." @default.
• W2364454402 created "2016-06-24" @default.
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• W2364454402 date "2008-01-01" @default.
• W2364454402 modified "2023-09-23" @default.
• W2364454402 title "MOLECULAR ANALYSIS BETWEEN TWO GYNOGENETIC CLONES OF PENGZE CRUCIAN CARP,CARASSIUS AURATUS OF PENGZE,BASED ON DETECTION OF RAPD MARKERS" @default.
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