Hybridization of glaucous gull (Larus hyperboreus) and herring gull (Larus argentatus) in Iceland: mitochondrial and microsatellite data

Vigfúsdóttir, Freydís; Pálsson, Snæbjörn; Ingólfsson, Agnar

doi:10.1098/rstb.2008.0042

Cited by 19 publications

(21 citation statements)

References 31 publications

(74 reference statements)

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“…However, fox predation of eggs and chicks is not believed to have caused the population decline, but rather to have resulted in re-distribution of breeding pairs. The hybridization of Herring Gulls with Glaucous Gulls (Ingólfsson, 1970;Vigfúsdóttir et al, 2008;Pálsson et al, 2009) and Herring Gulls' continually approaching the core Glaucous Gull breeding regions (Petersen, 1998) are causes for real concern regarding the status of Glaucous Gulls as a separate species.…”

Section: Conservation Concernsmentioning

confidence: 99%

The Status of Glaucous Gulls Larus hyperboreus in the Circumpolar Arctic

Petersen¹,

Irons²,

Gilchrist³

et al. 2015

ARCTIC

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ABSTRACT. The entire world population of the Glaucous Gull Larus hyperboreus breeds in the circumpolar Arctic. Some local populations appear to be declining significantly. In this paper, we summarize the current state of knowledge on Glaucous Gull populations and trends. The total Arctic population is estimated at 138 600 to 218 600 breeding pairs (277 200 to 437 200 breeding individuals) distributed among at least 2768 colonies (many not documented). Population declines may be attributable to egg harvest, contaminants, or food shortages, but other factors operating outside the breeding season should not be excluded. We recommend collaborative conservation efforts that will include better population estimates in most countries, as well as standardized monitoring programs.Key words: Glaucous Gull; Larus hyperboreus; Arctic; population status; population trends; monitoring; conservation concerns RÉSUMÉ. Toute la population mondiale de goélands bourgmestres Larus hyperboreus se reproduit dans l'Arctique circumpolaire. Certaines populations locales semblent diminuer considérablement. Dans cette communication, nous résumons l'état actuel des connaissances sur les populations et les tendances concernant le goéland bourgmestre. La population arctique totale est estimé de 138 600 à 218 600 couples reproducteurs (de 277 200 à 437 200 individus reproducteurs) répartis dans au moins 2 768 colonies (dont grand nombre n'ont pas été consignées). Les déclins de population peuvent être attribuables à la récolte des oeufs, aux contaminants ou aux pénuries de nourriture, bien qu'il ne faille pas exclure d'autres facteurs ne se rapportant pas à la saison de reproduction. Nous recommandons des efforts de conservation communs qui comprendront de meilleures estimations de population dans la plupart des pays de même que des programmes de surveillance normalisés.

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Section: Conservation Concernsmentioning

confidence: 99%

The Status of Glaucous Gulls Larus hyperboreus in the Circumpolar Arctic

Petersen¹,

Irons²,

Gilchrist³

et al. 2015

ARCTIC

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“…Recent range expansions have resulted in hybridization between resident and colonist species (resident hyperboreus with colonist argentatus, Iceland, ca. 1925, Vigfúsdóttir et al, 2008resident argentatus with colonist cachinnans, Poland, ca. 1980s, Neubauer et al, 2009.…”

Section: Introductionmentioning

confidence: 99%

Recurrent hybridization and recent origin obscure phylogenetic relationships within the ‘white-headed’ gull (Larus sp.) complex

Sonsthagen

Wilson

Chesser

et al. 2016

Molecular Phylogenetics and Evolution

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Species complexes that have undergone recent radiations are often characterized by extensive allele sharing due to recent ancestry and (or) introgressive hybridization. This can result in discordant evolutionary histories of genes and heterogeneous genomes, making delineating species limits difficult. Here we examine the phylogenetic relationships among a complex group of birds, the white-headed gulls (Aves: Laridae), which offer a unique window into the speciation process due to their recent evolutionary history and propensity to hybridize. Relationships were examined among 17 species (61 populations) using a multilocus approach, including mitochondrial and nuclear intron DNA sequences and microsatellite genotype information. Analyses of microsatellite and intron data resulted in some species-based groupings, although most species were not represented by a single cluster. Considerable allele and haplotype sharing among white-headed gull species was observed; no locus contained a species-specific clade. Despite this, our multilocus approach provided better resolution among some species than previous studies. Interestingly, most clades appear to correspond to geographic locality: our BEAST analysis recovered strong support for a northern European/Icelandic clade, a southern European/Russian clade, and a western North American/canus clade, with weak evidence for a high latitude clade spanning North America and northwestern Europe. This geographical structuring is concordant with behavioral observations of pervasive hybridization in areas of secondary contact. The extent of allele and haplotype sharing indicates that ecological and sexual selection are likely not strong enough to complete reproductive isolation within several species in the white-headed gull complex. This suggests that just a few genes are driving the speciation process.

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“…Secondly, mtDNA analysis does not allow to estimate the degree and nature of changes affecting nuclear DNA (nDNA) in hybrids. Contrast genetic regularities for nuclear and mitochondrial markers are usually explained by the high genetic drift of mtDNA due to a reduction in the effective size of mtDNA compared to that of nDNA [24,25].…”

Section: Introductionmentioning

confidence: 99%

“…Until recently, one of the most popular markers for detecting interspecific hybrids was mitochondrial DNA polymorphism (mtDNA) [1, [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

BIODIVERSITY ASSESSMENT IN INTERSPECIES HYBRIDS OF THE GENUS Ovis USING STR AND SNP MARKERS

Deniskova¹,

Dotsev²,

Багиров³

et al. 2017

S-h. biol.

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A b s t r a c tIntrogression of wild and domestic species is regarded as a promising way to improve genetic diversity in populations of farm animals. The aim of our study was to investigate the influence of introgression of the wild species (argali) on genetic diversity of interspecific hybrids with domestic sheep using STR and SNP markers. Samples included original parental forms: Romanov sheep (ROM, n = 35), representing the «domestic» form (Ovis aries), and argali (OAM, n = 10), characterizing the «wild» form (O. ammon polii), male hybrid F1, obtained by surgical insemination of Romanov ewe by argali sperm (F 1 , n = 1), and back crosses obtained by crossing Romanov ewes with hybrid F 1 ram (BC 1 , n = 38) and hybrid BC 1 rams (BC 2 , n = 14). The analysis of 11 STR loci (BLT001B, CSRD247, FCB20, CSAP36, MAF65, McM147, OarCP49, D5S2, HSC, BMS2213 and INRA23) was carried out on the ABI PRISM 3130xl genetic analyzer. For SNP genotyping we used Ovine SNP50K BeadChip. After quality control, 9 STR loci and 8591 SNPs were left for the analysis. Statistical calculations were performed in GenAIEx 6.5, PLINK v1.07, HP-Rare 1.1, GENETIX 4.05 and STRUCTURE 2.3.4. Regardless the type of DNA marker, ROM, compared with OAM, was characterized by a higher level of genetic diversity, assessed by observed heterozygosity (H o ) and allelic richness (Ar). Hybridization resulted in an increase in this parameter in the F 1 hybrid. In groups BC 1 and BC 2 , the H o values, calculated per STR and SNP, were higher than similar in the parental forms. In BC 1 and BC 2 groups the Ar values, estimated by SNP-markers, were reducing in comparison with F 1 and were intermediate in comparison with the same in the parental forms. The changes in the Ar values, based on STR data, had the character of a trend in groups BC 1 and BC 2 . Principal component analysis (PCA), performed by using SNP-markers, showed a more objective distribution pattern of the studied animals according to their origin in the coordinates space. In case of SNP data, PC1 was sufficient for clearly differentiation of groups OAM, ROM, F 1 and BC 1 + BC 2 . In summary, the first two components (PC1 and PC2) were responsible for 25.87 % of the SNP variability and for only 12.46 % of the STR variability. Principal component 3 (PC3), which was responsible for 6.16 % of SNP variability, made it possible to differentiate BC 1 and BC 2 groups, whereas at the application of STR these groups were localized as a common cluster. The results of STRUCTURE analysis showed that association of the investigated individuals into clusters, based on STR-profiles, did not match their origin, while the formation of clusters by SNP-markers was corresponded to the actual origin of animals. We found that both types of tested DNA markers were suitable for detecting changes in genetic diversity through hybrids generation. Nevertheless, a significant advantage of using multiple SNP-markers for the differentiation of hybrids from the parental forms was shown.

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Hybridization of glaucous gull (Larus hyperboreus) and herring gull (Larus argentatus) in Iceland: mitochondrial and microsatellite data

Cited by 19 publications

References 31 publications

The Status of Glaucous Gulls <i>Larus hyperboreus</i> in the Circumpolar Arctic

The Status of Glaucous Gulls <i>Larus hyperboreus</i> in the Circumpolar Arctic

Recurrent hybridization and recent origin obscure phylogenetic relationships within the ‘white-headed’ gull (Larus sp.) complex

BIODIVERSITY ASSESSMENT IN INTERSPECIES HYBRIDS OF THE GENUS Ovis USING STR AND SNP MARKERS

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