Population genetic structure in the paddyfield warbler (Acrocephalus agricola Jerd.)

Zehtindjiev, Pavel; Ilieva, Mihaela; Hansson, Bengt; Oparina, O. S.; Oparin, M. L.; Bensch, Staffan

doi:10.1093/czoolo/57.1.63

Cited by 5 publications

(3 citation statements)

References 43 publications

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“…This was indicated by the low effective allele numbers, which were around half of the allele numbers per locus, and by the low expected heterozygosity and allelic richness. Importantly, our H E estimates of 0.44-0.48 are similar to values recovered in endangered bird species (Evans & Sheldon 2008, Vitorino et al 2019) and, on average, appear lower than H E values observed in other studied Acrocephalus species (Hansson & Richardson 2005, Kralj et al 2010, Proch azka et al 2011, Zehtindjiev et al 2011, Ceresa et al 2015.…”

Section: Low Genetic Diversitysupporting

confidence: 67%

Low genetic diversity and high gene flow in the Aquatic Warbler (Acrocephalus paludicola), a threatened marshland songbird with a fragmented breeding range

Kubacka

Dubiec

Korb

et al. 2023

Ibis

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Breeding habitat loss and depletion of genetic diversity can have critically negative impacts on species, and especially so for habitat specialists. The Aquatic Warbler Acrocephalus paludicola is a threatened European songbird that breeds in fens, which have been lost and fragmented over centuries. We used microsatellite loci to perform a spatial and longitudinal comparison, comparing samples collected recently (contemporary) with those obtained about two decades earlier (historical) from c. 25% of the breeding range (Biebrza and Polesie) of the Aquatic Warbler. With these data we explored changes in genetic diversity, expansions and reductions of population size, population structure, and gene flow. Allelic richness, expected heterozygosity, the number of effective and private alleles, and effective population size (NE ≈ 200) were low and comparable across time and space. We detected a genetic bottleneck in contemporary Biebrza, and a less certain bottleneck in both historical and contemporary Polesie. Across space, Biebrza and Polesie were not genetically differentiated in either period. All the historical samples clustered together, but in the contemporary samples a small part of Polesie clustered separately (FST = 0.011). Across time, Biebrza and Polesie showed low but significant differentiation (FST = 0.026–0.064), and historical and contemporary groups clustered apart. A principal coordinate analysis on genetic distance detected three groups, which spanned sampling locations. In the temporal comparison, the contemporary group and contemporary Biebrza had elevated mean within‐group pairwise relatedness. We did not recover signals for sex‐biased dispersal, asymmetric gene flow or isolation‐by‐distance using the molecular data. Our results suggest that the studied populations show: (1) impoverished genetic diversity, (2) a change in allele frequencies over the two decades studied and (3) high gene flow between distant breeding sites, implying high resilience to habitat fragmentation that should facilitate the success of recolonising restored habitat patches by Aquatic Warblers.

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Section: Low Genetic Diversitysupporting

confidence: 67%

Low genetic diversity and high gene flow in the Aquatic Warbler (Acrocephalus paludicola), a threatened marshland songbird with a fragmented breeding range

Kubacka

Dubiec

Korb

et al. 2023

Ibis

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“…Avian malaria and related haemosporidian parasites (e.g. Plasmodium and Haemoproteus ) have been recorded in many bird species worldwide (Valkiūnas et al 2006) and parasitized individuals frequently carry simultaneous infections by more than one parasite species or strain (mixed or co‐infections) (Valkiūnas et al 2003, Palinauskas et al 2005, Krizănauskiené et al 2010, Loiseau et al 2010, Asghar et al 2011, Zehtindjiev et al 2011, Piersma and van der Velde 2012). However, the effects of such co‐infections of avian malaria parasites are largely unknown.…”

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confidence: 99%

Co‐infections by malaria parasites decrease feather growth but not feather quality in house martin

Marzal

Asghar

Rodríguez

et al. 2013

Journal of Avian Biology

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During moult, stressors such as malaria and related haemosporidian parasites (e.g. Plasmodium and Haemoproteus) could affect the growth rate and quality of feathers, which in turn may compromise future reproduction and survival. Recent advances in molecular methods to study parasites have revealed that co‐infections with multiple parasites are frequent in bird–malaria parasite systems. However, there is no study of the consequences of co‐infections on the moult of birds. In house martins Delichon urbica captured and studied at a breeding site in Europe during 11 yr, we measured the quality and the growth rate of tail feathers moulted in the African winter quarters in parallel with the infection status of blood parasites that are also transmitted on the wintering ground. Here we tested if the infection with two haemosporidian parasite lineages has more negative effects than a single lineage infection. We found that birds with haemosporidian infection had lower body condition. We also found that birds co‐infected with two haemosporidian lineages had the lowest inferred growth rate of their tail feathers as compared with uninfected and single infected individuals, but co‐infections had no effect on feather quality. In addition, feather quality was negatively correlated with feather growth rate, suggesting that these two traits are traded‐off against each other. We encourage the study of haemosporidian parasite infection as potential mechanism driving this trade‐off in wild populations of birds.

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“…This situation is not unique to the RBS, but actually a common phylogeographic status for many bird species currently distributed in Eurasia. Genetic admixture has been previously shown to characterize the Hoopoe (Upupa epops) population [54], the White-winged Snowfinch (Montifringila nivalis) [55], the Common Sandpiper (Actitis hypoleucos) [56], the Marsh Warbler (Acrocephalus palustris) [57], the Paddyfield Warbler (Acrocephalus agricola) [58], the Eurasian Reed Warbler (Acrocephalus scirpaceus) [59], the Western Capercaillie (Tetrao urogallus) [60], the Hazel Grouse (Tetrastes bonasia) [61], the Eurasian Blackcap (Sylvia atricapilla) [62], the European Bee-eater (Merops apiaster) [63], and the Eurasian Jay (Garrulus glandarius) [64], to name just a few. For the RBS, this genetic background is a clear result of Pleistocene climatic history (see next chapter), with different lineages coming together into refugia and, possibly, even bird movements between different refugia.…”

Section: Behind the Mask: Genetic Panmixiamentioning

confidence: 99%

High Genetic Diversity among Breeding Red-Backed Shrikes Lanius collurio in the Western Palearctic

Pârâu

Frias-Soler

2019

Diversity

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Revealing the genetic population structure in abundant avian species is crucial for understanding speciation, conservation, and evolutionary history. The Red-backed Shrike Lanius collurio, an iconic songbird renowned for impaling its prey, is widely distributed as a breeder across much of Europe, Asia Minor and western Asia. However, in recent decades, many populations have declined significantly, as a result of habitat loss, hunting along migration routes, decrease of arthropod food, and climate change e.g., severe droughts in Africa. Within this context, gene flow among different breeding populations becomes critical to ensure the survival of the species, but we still lack an overview on the genetic diversity of the species. In this paper, we analyzed the mitochondrial cytochrome b gene (mtDNA) and the cytochrome c oxidase subunit 1 gene (mtDNA) of 132 breeding Red-backed Shrikes from across the entire breeding range to address this knowledge gap. Our results revealed consistent genetic diversity and 76 haplotypes among the Eurasian populations. Birds are clustered in two major groups, with no clear geographical separation, as a direct consequence of Pleistocene glaciations and apparent lineage mixing in refugia. This has led to genetic panmixia.

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Population genetic structure in the paddyfield warbler (Acrocephalus agricola Jerd.)

Cited by 5 publications

References 43 publications

Low genetic diversity and high gene flow in the Aquatic Warbler (Acrocephalus paludicola), a threatened marshland songbird with a fragmented breeding range

Low genetic diversity and high gene flow in the Aquatic Warbler (Acrocephalus paludicola), a threatened marshland songbird with a fragmented breeding range

Co‐infections by malaria parasites decrease feather growth but not feather quality in house martin

High Genetic Diversity among Breeding Red-Backed Shrikes Lanius collurio in the Western Palearctic

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