A holocenic and dynamic hybrid zone between two cactophilic<b><i>Drosophila</i></b>species in a coastal lowland plain of the Brazilian Atlantic Forest

Barrios‐Leal, Dora Yovana; Menezes, Rodolpho S. T.; Ribeiro, João Victor; Bizzo, Luiz; Sene, Fábio de Melo; Neves‐da‐Rocha, João; Manfrin, Maura Helena

doi:10.1111/jeb.13934

J of Evolutionary Biology

2021

DOI: 10.1111/jeb.13934

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A holocenic and dynamic hybrid zone between two cactophilicDrosophilaspecies in a coastal lowland plain of the Brazilian Atlantic Forest

Dora Yovana Barrios‐Leal

Rodolpho S. T. Menezes

João Victor Ribeiro

et al.

Abstract: Hybridization and introgression are processes that contribute to shaping biological diversity. The factors promoting the formation of these processes are multiples but poorly explored in a biogeographical and ecological context. In the southeast coastal plain of the Brazilian Atlantic Forest, a hybrid zone was described between two closely related cactophilic species, Drosophila antonietae and D. serido. Here, we revisited and analysed specimens from this hybrid zone to evaluate its temporal and

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Cited by 3 publications

References 116 publications

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Genome location, evolution and centromeric contribution of satellite DNAs shared between the two closely related species Drosophila serido and D. antonietae (repleta group, buzzatii cluster)

Laborne,

Barrios-Leal,

Heslop-Harrison

et al. 2024

Chromosoma

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Genome location, evolution and centromeric contribution of satellite DNAs shared between the two closely related species Drosophila serido and D. antonietae (repleta group, buzzatii cluster)

Laborne,

Barrios-Leal,

Heslop-Harrison

et al. 2024

Chromosoma

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Unravelling the genetic diversity and population dynamics of three Tacinga species (Cactaceae: Opuntioideae) in the Caatinga

Barrios-Leal,

Menezes,

Zappi

et al. 2023

Botanical Journal of the Linnean Society

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The Caatinga biogeographical region, located in the semi-arid region of northeastern Brazil, is characterized by high levels of cactus diversity and endemism. In this study, we investigated the genetic diversity, differentiation, and phylogeography of three Tacinga species (Tacinga inamoena, Tacinga subcylindrica, and Tacinga palmadora), which are endemic and widely distributed in the Caatinga. We collected 222 samples from 108 locations and used plastid (3ʹrps16-5ʹtrnK, PsbE-PetL) and nuclear (PhyC) molecular markers for a multilocus approach. Our results suggest that diversification of the three Tacinga species occurred during the middle Pleistocene, with the Southern Sertaneja Depression ecoregion of the Caatinga being identified as the ancestral area. Interestingly, analyses of genetic structure did not show any evidence that the major river in the region (the Sao Francisco River) and the Caatinga ecoregions acted as biogeographical barriers for gene flow in these species. This suggests that the three Tacinga species exhibited different responses to widely accepted geographical and geomorphological barriers known to affect other taxonomic groups in the Caatinga. Overall, our findings provide new insights into the biogeographical history of the Caatinga and the factors that have shaped diversification and genetic structure of species in this region. Our study underlines the importance of considering the unique natural history and biological characteristics of individual taxonomic groups when investigating the biogeography of the Caatinga.

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Paleoclimate Fluctuations Facilitate the Biogeographical History of Endemic Species of Freshwater Crabs in China via Cycles of Introgressive Hybridisation and Habitat Isolation

Shi,

Wang,

Song

et al. 2024

Journal of Biogeography

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AimThe impact of Pleistocene climate fluctuations on the biogeographical history of aquatic species has been a topic of enduring debate. This issue poses particular challenges for parapatric closely related species, especially those situated in transition zones where species assemblages occur between distinct zoogeographic boundaries.LocationEastern China.TaxonFive closely related Sinopotamon species and subspecies, S. shensiense, S. honanense, S. y. yangtsekiense, S. y. shanxianense, and S. y. tongbaiense.MethodsThese parapatric Sinopotamon species and subspecies, distributed along the boundary between the Palaearctic and Oriental realms in eastern China, offer an ideal model for addressing these challenges. We explored the biogeographic history of these species by conducting a comparative phylogeographic analysis using nine microsatellite loci and two mitochondrial DNA sequences, combined with morphological variation and fine‐tuned ecological niche modelling.ResultsOur phylogeographic analyses consistently revealed two well‐supported clades: clade A, for S. y. yangtsekiense, and clade B, which includes other species showing polyphyletic patterning and significant gene introgression. The Nanyang Basin and surrounding mountains regions (NBSM) was identified as a critical shared refuge and hybrid zone, facilitating interspecific introgression through at least two putative hybridisation events. During the Late Pleistocene glacial cycles, introgressive hybridisation of these species occurred in the NBSM, followed by rapid expansion and colonisation of heterogenous habitats during interglacial cycles, with dispersal corridors largely aligning with the local river system. In particular, the diffusion corridor of S. honanense significantly disrupted the continuous distribution of S. y. shanxianense and S. y. tongbaiense, indicating that S. honanense has replaced S. y. shanxianense and S. y. tongbaiense in the NYSM and caused a disruption in its distribution.Main ConclusionsThe biogeographic histories of the species in clade B are consistent with a mixing–isolation–mixing model, which suggests that populations experienced repeated introgressive hybridisation during glacial periods and regional habitat isolation during interglacial periods. Our findings represent a classic case of fine tracking biogeographical scenarios in parapatric species and provide unprecedented insights into the evolutionary radiation of the freshwater fauna that occupies zoogeographic boundaries.

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A holocenic and dynamic hybrid zone between two cactophilicDrosophilaspecies in a coastal lowland plain of the Brazilian Atlantic Forest

Cited by 3 publications

References 116 publications

Genome location, evolution and centromeric contribution of satellite DNAs shared between the two closely related species Drosophila serido and D. antonietae (repleta group, buzzatii cluster)

Genome location, evolution and centromeric contribution of satellite DNAs shared between the two closely related species Drosophila serido and D. antonietae (repleta group, buzzatii cluster)

Unravelling the genetic diversity and population dynamics of three Tacinga species (Cactaceae: Opuntioideae) in the Caatinga

Paleoclimate Fluctuations Facilitate the Biogeographical History of Endemic Species of Freshwater Crabs in China via Cycles of Introgressive Hybridisation and Habitat Isolation

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