Comparative phylogeographic and demographic analyses reveal a congruent pattern of sister relationships between bird populations of the northern and south-central Atlantic Forest

Bocalini, Fernanda; Bolívar-Leguizamón, Sergio D.; Silveira, Luís Fábio; Bravo, Gustavo A.

doi:10.1016/j.ympev.2020.106973

Cited by 19 publications

(40 citation statements)

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“…The resulting impoverishment of the region's avifauna is evidenced by some global extinctions, such as Philydor novaesi and Cichlocolaptes mazarbarnetti (Barnett & Buzzetti, 2014;Lees et al, 2014;Pereira et al, 2014a), and local extirpations commented herein on the species accounts. Because the PCE supported a Pleistocene forest refuge (Carnaval & Moritz, 2008) where several lineages evolved (e.g., Maldonado-Coelho et al, 2013;Bocalini et al, 2021), many of such populations that have probably gone extinct in the PCE (e.g., Crax cf. fasciolata, Thamnomanes caesius and Sclerurus macconnelli) had been isolated for thousands of years and may constitute separately evolving lineages that will never been properly known (Lees & Pimm, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…Also, since 2010 researchers from the Laboratório de Bioecologia e Conservação de Aves Neotropicais (LABECAN) at the Federal University of Alagoas (UFAL) have been monitoring birds in the largest forest fragment of the Murici Ecological Station, and birds collected therein have been deposited at the Museu de História Natural da UFAL (MHNAL), in Maceió. Results from these 1999-2020 expeditions have served as the basis for a number of studies (e.g., Silveira & Olmos, 2003;Silveira et al, 2003a, b;Dénes et al, 2011;Batalha-Filho et al, 2013Lobo-Araújo et al, 2013;Pereira et al, 2014bPereira et al, , 2019aRêgo et al, 2014;Thom & Aleixo, 2015;Tonetti et al, 2017;Campos et al, 2018;Bolívar-Leguizamón et al, 2020;Harvey et al, 2020;Bocalini et al, 2021;Carvalho et al, 2021;Dickens et al, 2021;Francisco et al, 2021;Gonçalves & Efe, 2022). The number of ornithological surveys (e.g., Cabral et al, 2006;Araujo & Rodrigues, 2011;Lyra-Neves et al, 2012;Portes et al, 2018); many notes on specific records for the state have also been published (e.g., Silva e Silva, 1996;Olmos, 2002;Sousa et al, 2005;Mestre, 2007;Lobo-Araújo et al, 2008;Patrial et al, 2011;Pereira et al, 2012;Leal et al, 2013) and birdwatchers have also been producing many new records for the state (WikiAves, 2021).…”

Section: See the Accounts Of Hypoedaleus Guttatus Corythopis Delaland...mentioning

confidence: 99%

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An annotated avian inventory of the Brazilian state of Alagoas, one of the world’s most threatened avifauna

et al. 2022

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The northeast Brazilian state of Alagoas harbors a rather diverse, and one of the world’s most threatened, avifauna. However, the knowledge about its avifauna is currently scattered on several publications and the state’s birds have never been comprehensively assembled into a checklist. To fill this shortfall, we present here the first critical review of all available bird records for the state of Alagoas. We present a list of 520 bird species recorded in the state, of which 503 are supported by documentary evidence. We also comment on the distribution, migratory movements, taxonomy and conservation of the region’s avifauna and correct previous misidentified or invalid records for the state.

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Section: Discussionmentioning

confidence: 99%

Section: See the Accounts Of Hypoedaleus Guttatus Corythopis Delaland...mentioning

confidence: 99%

An annotated avian inventory of the Brazilian state of Alagoas, one of the world’s most threatened avifauna

et al. 2022

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“…We then compared between different demographic models using the AIC to select the best model. We did not fit more complex models (e.g., changes in effective population size or more complex scenarios of gene flow), as these simple models allowed us to test our two main questions and avoided overparameterization (Bocalini et al, 2021).…”

Section: Testing Possible Demographic Scenariosmentioning

confidence: 99%

Replicate hybrid zones suggest a limited role of plumage in reproductive isolation among subspecies of the Variable Seedeater (Sporophila corvina)

Ocampo

Winker²,

Miller³

et al. 2022

Preprint

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After establishing secondary contact, recently diverged populations may remain reproductively isolated or hybridize to a varying extent depending on factors such as hybrid fitness and the strength of assortative mating. Replicated contact zones between hybridizing taxa offer a unique opportunity to explore how different factors interact to shape patterns of hybridization. Here, we used genomic and phenotypic data from three independent contact zones between subspecies of the Variable Seedeater (Sporophila corvina), to examine how coloration and genetic divergence shape patterns of hybridization. We found that plumage coloration has limited introgression across contact zones, but the degree of plumage divergence does not explain overall patterns of introgression. Across two parallel contact zones between populations with divergent phenotypes (entirely black vs. pied plumage) populations hybridized extensively across one contact zone but not the other, suggesting that plumage divergence is not sufficient to maintain reproductive isolation. Where subspecies hybridized, hybrid zones were wide and formed by later-generation hybrids, suggesting that hybrids present similar or higher fitness than parental subspecies. Moreover, contemporary gene flow has played an important role in shaping patterns of genetic diversity between populations. Overall, our results demonstrate that divergence in plumage coloration is important in reducing gene flow but insufficient in maintaining reproductive isolation in this clade, and that other factors such as divergence in song and time since secondary contact may also play an important role in driving patterns of reduced hybridization and gene flow.

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“…Wider geographic sampling of the mealy amazon across the Atlantic Forest may reveal additional genetic structure between populations within the Atlantic Forest (e.g., between the north-eastern region of the Atlantic Forest, often referred to as the Pernambuco Center of Endemism, and the southern or central regions of the Atlantic Forest) as well as between A. f. farinosa populations in the Amazon basin and Atlantic Forest. Patterns of intraspecific genetic differentiation within the Atlantic Forest are seen in other avian [62][63][64] and non-avian taxa [65] within the Atlantic Forest, and may be driven by the historic expansion of species from the Amazon basin to the central Atlantic Forest through gallery forests of the Cerrado region [42,66,67] or the relative stability and connectivity of the central and western regions of the Atlantic Forest in relation to historical climate patterns [68,69].…”

Section: Genetic Relationships Of the Mealy Amazon Cladesmentioning

confidence: 99%

Genetic, but Not Behavioral, Evidence Supports the Distinctiveness of the Mealy Amazon Parrot in the Brazilian Atlantic Forest

2021

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The presence of unidentified cryptic species within a species complex can obscure demographic trends of vulnerable species, impacting potential species conservation and management decisions. Previous work identified a taxonomic split between Central and South American populations of the mealy amazon (Amazona farinosa) that subsequently resulted in the elevation of these two populations to full species status (Amazona guatemalae and A. farinosa, respectively). In that study, however, a third, geographically disjunct population from the Brazilian Atlantic Forest was insufficiently sampled, limiting the ability of researchers to fully evaluate its genetic distinctiveness. Given that significant levels of biodiversity and endemism are found in this region, we aimed to use genetic and behavioral data to determine if the Atlantic Forest population of A. f. farinosa represents a third cryptic species within the complex. We sequenced 6 genes (4 mitochondrial and 2 nuclear introns) from the Atlantic Forest population of A. f. farinosa to measure the genetic relationships between this population and all other recognized species and subspecies of the mealy amazon. In addition, we use spectrographic cross-correlation and an analysis of 29 acoustic parameters to determine whether the taxa diverge in their learned contact call structure and if the degree of vocal differentiation correlates to genetic structure. We found that the Atlantic Forest population of A. f. farinosa was genetically distinct from that of the greater Amazon basin, but the degree of differentiation was less than that separating the Central and South American taxa. Acoustic analysis revealed substantial variation in contact call structure within each clade. This variation created substantial overlap in acoustic space between the clades. In all, the degree of call divergence between clades did not correspond to the degree of genetic divergence between the same clades. The results suggest that in taxa with substantial geographic variation in learned calls, such as the mealy amazon, vocalizations may not be a useful tool in the identification of cryptic species that are lifelong vocal learners. While these results do not support the elevation of the Brazilian Atlantic Forest population of the mealy amazon to full species status, given current trends of habitat loss in the Atlantic Forest as well as the imperiled status of large parrot species globally, we argue that this population nonetheless warrants special conservation and management consideration as a pool of unique genetic diversity within the southern mealy amazon species.

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Comparative phylogeographic and demographic analyses reveal a congruent pattern of sister relationships between bird populations of the northern and south-central Atlantic Forest

Cited by 19 publications

References 154 publications

An annotated avian inventory of the Brazilian state of Alagoas, one of the world’s most threatened avifauna

An annotated avian inventory of the Brazilian state of Alagoas, one of the world’s most threatened avifauna

Replicate hybrid zones suggest a limited role of plumage in reproductive isolation among subspecies of the Variable Seedeater (Sporophila corvina)

Genetic, but Not Behavioral, Evidence Supports the Distinctiveness of the Mealy Amazon Parrot in the Brazilian Atlantic Forest

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