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001-es BibID:BIBFORM103361
Első szerző:Bagyura János
Cím:Különleges mintázatú és genetikai állományú kerecsensólyom (Falco cherrug) megfigyelése Budapest térségében / Bagyura, János, Laczkó, Levente, Darya, Rozhkova, Liudmila, Zinevich, Prommer, Mátyás, Sramkó, Gábor,
Megjegyzések:Saker Falcons (Falco cherrug) with an unstriped tail are very unusual in the Pannonian region; the first author of this note is only aware of a single instance in his practice which includes the ringing of ca. 1700 birds here. One individual, which has a known pedigree of Hungarian parents where the female is without a striped tail, was included as a representative sample of the Budapest region in a population genomic study utilising RAD-seq methodology (a recent technique that makes use of the Illumina high-throughput sequencing technology to produce massive amount of genetic information by evenly representing the whole genome). This study is part of a cooperative project between Hungarian and Russian researchers who try to explore and describe the phylogeographic structure of Sakers on their whole distribution area using genomic data. As a first step, we compared the population genomic structure of the Pannonian population and a recently established population (Karyakin & Nikolenko 2011) in the Tuva Republic (Russian Federation) of Sakers using the RADseq approach. Our sample set of 20 and 18 Sakers from the above populations was included in a RAD-seq library preparation procedure that was sequenced on an Illumina NextSeq machine (single-end mid-output kit) having produced 36.3 million, 150 basepair long reads. The raw reads were mapped on the publicly available genome (GenBank accession number: AKMU00000000) of a Saker from the United Arab Emirates. We identified 1,618,374 RAD-loci that produced 752,872 SNPs. After filtering, we were able to work with 18,089, genome-wide SNPs. This SNP-dataset was analysed by Principal Component Analysis of allele frequencies (Fig. 3) that gives us a representation of genetic distances between the samples on a plot. The two populations are clearly separated along axis x, whereas the variation within each population is separated along axis y. Surprisingly, we found the morphologically unusual, abovementioned bird as a greatly outlying sample on the PCA scatterplot (marked by an arrow on Fig. 3). We cannot explain with certainty yet what is the reason behind this remarkable coincident of being outlying in both morphology and genetics, but we can speculate on past hybridisation and introgression as a potential reason for being an outlier. The RAD-seq method can definitely identify individuals that have a normal phenotype, but are descendants of introgressed ancestor(s), and if the unusual phenotype described here is the result of past hybridisation or gene-flow between populations of the same species, then the coincide can be explained by the presence of genomic bits from an other species of falcons or geographic race of Sakers still present in the genome of Pannonian Sakers. We regard the latter case (i.e., immigration from a geographically distinct population of Sakers and subsequent gene-flow) to be the more plausible explanation for the pattern reported here.
Tárgyszavak:Természettudományok Biológiai tudományok magyar nyelvű folyóiratközlemény hazai lapban
Megjelenés:Heliaca. - 15 : 1 (2017), p. 176-181. -
További szerzők:Darya, Rozhkova Liudmila, Zinevich Prommer Mátyás Laczkó Levente (1992-) (biológus) Sramkó Gábor (1981-) (biológus)
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