Birds of the World, Journal Year: 2023, Volume and Issue: unknown
Published: Oct. 24, 2023
Molecular Ecology, Journal Year: 2023, Volume and Issue: 32(8), P. 1972 - 1989
Published: Jan. 27, 2023
Genomes retain evidence of the demographic history and evolutionary forces that have shaped populations drive speciation. Across island systems, contemporary patterns genetic diversity reflect population demography, including colonization events, bottlenecks, gene flow drift. Here, we investigate genome-wide distribution runs homozygosity (ROH) using whole-genome resequencing individuals (>22× coverage) from six across three archipelagos Berthelot's pipit (Anthus berthelotii)-a passerine has recently undergone We show most dramatic reduction in occurs between mainland sister species (the tawny pipit) is lowest experienced sequential bottlenecks (i.e., Madeiran Selvagens populations). Pairwise Markovian coalescent (PSMC) analyses estimated diverged its ~2 million years ago, with archipelago founded 50,000 colonized 8000 ago. identify many long ROH (>1 Mb) these populations. Population expansion within last 100 may eroded archipelago, resulting a prevalence short (<1 Mb). However, extensive detected suggest strong recent inbreeding bottleneck effects, as much 38% autosomes consisting >250 kb. These findings highlight importance history, well selection drift, shaping genomic diverging
Language: Английский
Citations
19
Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: 99(6), P. 2060 - 2081
Published: June 18, 2024
Since its coinage ca. 1850 AD by Philip Barker Webb, the biogeographical region of Macaronesia, consisting North Atlantic volcanic archipelagos Azores, Madeira with tiny Selvagens, Canaries and Cabo Verde, for some authors different continental coastal strips, has been under dispute. Herein, after a brief introduction on terminology purpose regionalism, we recover origins Macaronesia name, concept geographical adscription, as well implications how have positioned themselves, using distinct terrestrial or marine floristic and/or faunistic taxa distributions relationships accepting rejecting existence this region. Four main issues related to are thoroughly discussed: (i) independence from Mediterranean phytogeographical region; (ii) discrepancies according analysed; (iii) limits role enclave(s), and, (iv) validity level. We conclude that own identity sound foundation, is mainly based three components shared Macaronesian core (Madeira Canaries) outermost (Azores Verde). These are: Palaeotropical-Tethyan Geoflora, formerly much more widely distributed in Europe Africa currently restricted northern (the Canaries); African Rand Flora, still extant margins Arabia, present southern (Madeira, Verde), neoendemic component, represented all archipelagos, result allopatric diversification promoted isolation ancestors manage colonize Central there, outer archipelagos. Finally, differentiating component recently colonized nearest coast, providing them biogeographic flavours.
Language: Английский
Citations
8
Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2021)
Published: April 17, 2024
Seasonal migration is an underappreciated driver of animal diversification. Changes in migratory behaviour may favour the establishment sedentary founder populations and promote speciation if there sufficient reproductive isolation between populations. From a systematic literature review, we here quantify role drop-off—the loss behaviour—in promoting birds on islands. We identify at least 157 independent colonization events likely initiated by species that led to speciation, including 44 cases among recently extinct species. By comparing, for all islands, proportion island endemic derived from drop-off with potential colonizers, showed seasonal has larger effect richness than direct dispersal. also found increases geographic Furthermore, success depends part biogeographic ecological factors, positively associated greater range size flock sizes. These results highlight importance shifts process calls consideration distribution birds.
Language: Английский
Citations
6
Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)
Published: April 1, 2025
ABSTRACT Island populations diverge from the mainland and each other by both natural selection neutral forces such as founder effects genetic drift. In this work, we aim to determine relative roles of drift in diversification chaffinches ( Fringilla spp.) Macaronesia. We tested hypothesis that taxa inhabiting Macaronesian archipelagos, which exhibit significant differences habitat climate compared with mainland, should experience distinct ecological pressures, leading divergence at loci under related environmental variables. To role local adaptation differentiation these taxa, performed genotype–environment association (GEA) analyses using ten variables 52,306 single nucleotide polymorphism markers obtained genotyping‐by‐sequencing (GBS) 79 chaffinches. Redundancy analysis (RDA) revealed genomic variation is associated identified candidate genes phenotypic traits Variables type precipitation, together drift, played an important between Macaronesia well within Canarian archipelago. Genetic was main factor North African Europe, Madeira those Canary Islands. Finally, Islands show incipient process level driven processes. Our results suggest habitat‐driven have a radiation chaffinch
Language: Английский
Citations
0
Conservation, Journal Year: 2025, Volume and Issue: 5(2), P. 19 - 19
Published: April 27, 2025
In 2011, the European Union Member States adopted a new system for updating Commission under Article 12 of Birds Directive (2009/147/EC), and every six years, will report on measures taken to conserve birds. The main assessment is carried out basis species censuses their temporal trends. Regrettably, however, only takes into account at global level not recognized valid subspecies, which represent important tesserae taxonomic diversity. This paper constructively discusses some results fourth proposes modifications future assessments achieve more inclusive at-risk subspecies.
Language: Английский
Citations
0
Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 3 - 22
Published: Jan. 1, 2024
Language: Английский
Citations
2
Journal of Evolutionary Biology, Journal Year: 2023, Volume and Issue: 36(9), P. 1226 - 1241
Published: July 24, 2023
According to models of ecological speciation, adaptation adjacent, contrasting habitat types can lead population divergence given strong enough environment-driven selection counteract the homogenizing effect gene flow. We tested this hypothesis in common chaffinch (Fringilla coelebs) on small island La Palma, Canary Islands, where it occupies two markedly different habitats. Isotopic (δ13 C, δ15 N) analysis feathers indicated that birds habitats differed ecosystem and/or diet, and phenotypic traits revealed significant differences morphology plumage colouration are consistent with ecomorphological ecogeographical predictions respectively. A genome-wide survey single-nucleotide polymorphism marked neutral structure was geography isolation by distance, suggesting low dispersal. In contrast, loci putatively under identified through association genotype-environment analyses, amarked adaptive between both Loci associated environmental among were distributed across genome, as expected for polygenic involved local adaptation. Our results suggest a role habitat-driven chaffinches process appears be facilitated reduction effective dispersal distances despite birds' high capacity.
Language: Английский
Citations
5
Web Ecology, Journal Year: 2023, Volume and Issue: 23(2), P. 87 - 98
Published: Aug. 1, 2023
Abstract. Around 60 % of all bat species occur in islands, and nearly one four is an insular endemic. Bats are often the only native terrestrial mammals oceanic despite increasing anthropogenic pressures, little known about distribution, natural history, population status most populations. The sub-tropical archipelago Madeira composed volcanic islands Madeira, Porto Santo, Desertas home to Macaronesian endemic Pipistrellus maderensis, subspecies Nyctalus leisleri verrucosus, Plecotus austriacus. maderensis both whereas other two have been recorded former. However, no bats Santo for over 15 years, raising fears that probably extinct island. In July 2021, we conducted island-wide acoustic survey using AudioMoth passive recorders, leading detection 28 out 46 sampling sites (60 %). species' activity was strongly associated with artificial water sources, genetic samples from six captured individuals revealed populations a close phylogenetic affinity. Furthermore, DNA metabarcoding, found feeds on wide variety insects, including several economically important pest disease vectors. These findings emphasise need target more conservation research efforts towards extant island potential ecosystem services they provide.
Language: Английский
Citations
5
Molecular Phylogenetics and Evolution, Journal Year: 2023, Volume and Issue: 186, P. 107838 - 107838
Published: June 5, 2023
The Mediterranean cone snail, Lautoconus ventricosus, is currently considered a single species inhabiting the whole basin and adjacent Atlantic coasts. Yet, no population genetic study has assessed its taxonomic status. Here, we collected 245 individuals from 75 localities throughout Sea used cox1 barcodes, complete mitochondrial genomes, genome skims to test whether L. ventricosus represents complex of cryptic species. maximum likelihood phylogeny based on genomes recovered six main clades (hereby named blue, brown, green, orange, red, violet) with sufficient sequence divergence be putative On other hand, phylogenomic analyses 437 nuclear genes only four out clades: blue orange were thoroughly mixed brown one was not recovered. This mito-nuclear discordance revealed instances incomplete lineage sorting introgression, may have caused important differences in dating cladogenetic events. Species delimitation tests proposed existence at least three species: violet, red + (i.e., cyan). Green plus cyan (with sympatric distributions) had West East distributions, respectively, mostly separated by Siculo-Tunisian biogeographical barrier. Morphometric shell using hypotheses as factor length covariate showed that discrimination power studied parameters 70.2%, reinforcing nature uncovered species, importance integrative approaches considering morphology, ecology, biogeography, variation.
Language: Английский
Citations
4
Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 109 - 134
Published: Jan. 1, 2024
Language: Английский
Citations
1