Phylogeny and biogeography of Phyllomys (Rodentia: Echimyidae) reveal a new species from the Cerrado and suggest Miocene connections of the Amazon and Atlantic Forest

Machado, Leonardo Ferreira; Loss, Ana Carolina; Paz, Anderson Barbosa; Vieira, Emerson M.; Rodrigues, F. R. N.; Marinho‐Filho, Jader

doi:10.1093/jmammal/gyy015

Cited by 22 publications

(11 citation statements)

References 35 publications

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“…Other molecular studies investigate the role of the historical connections between Amazonia and the Atlantic Forest in terms of dispersion and diversification of several animal species, such as mammals [ 6 , 27 ], birds [ 8 ], reptiles [ 28 – 30 ], amphibians [ 31 ] (for a literature revision of vertebrate evidence see [ 10 ]), and insects [ 32 ]. Yet, the totality of species that may evidence past connections between Amazonia and the Atlantic Forest has not been mapped and such information is particularly scarce for mammals.…”

Section: Introductionmentioning

confidence: 99%

Potential mammalian species for investigating the past connections between Amazonia and the Atlantic Forest

et al. 2021

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Much evidence suggests that Amazonia and the Atlantic Forest were connected through at least three dispersion routes in the past: the Eastern route, the central route, and the Western route. However, few studies have assessed the use of these routes based on multiple species. Here we present a compilation of mammal species that potentially have dispersed between the two forest regions and which may serve to investigate these connections. We evaluate the present-day geographic distributions of mammals occurring in both Amazonia and the Atlantic Forest and the likely connective routes between these forests. We classified the species per habitat occupancy (strict forest specialists, species that prefer forest habitat, or generalists) and compiled the genetic data available for each species. We found 127 mammalian species presently occurring in both Amazonia and the Atlantic Forest for which, substantial genetic data was available. Hence, highlighting their potential for phylogeographic studies investigating the past connections between the two forests. Differently from what was previously proposed, the present-day geographic distribution of mammal species found in both Amazonia and the Atlantic Forest points to more species in the eastern portion of the dry diagonal (and adjoining forested habitats). The Central route was associated with the second most species. Although it remains to be seen how this present-day geography reflects the paleo dispersal routes, our results show the potential of using mammal species to investigate and bring new insights about the past connections between Amazonia and the Atlantic Forest.

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Section: Introductionmentioning

confidence: 99%

Potential mammalian species for investigating the past connections between Amazonia and the Atlantic Forest

et al. 2021

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“…Previous bioregionalization studies using different methods at various geographical scales were carried out in the Atlantic Forest, recovering more or less congruent biogeographical regions. These studies included data on reptiles and amphibians (Müller, 1972), woody plants (Prance, 1982), primates and/or dipterids (Amorim & Pires, 1996; Amorim & Santos, 2017), mammals (Costa et al., 2000), birds (Carvalho et al., 2017; Silva et al., 2004), harvestmen (DaSilva et al., 2017), Hemiptera and/or groups of arthropods (Ferrari et al., 2010; Hoffmeister & Ferrari, 2016), orchid‐bees (Garraffoni et al., 2017) and rodents (Machado et al., 2018). Moura et al.…”

Section: Introductionmentioning

confidence: 99%

Vicariance and regionalization patterns in snakes of the South American Atlantic Forest megadiverse hotspot

Barbo

Nogueira

Sawaya

2020

Journal of Biogeography

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Aim Vicariance has often been invoked to explain bioregionalization patterns in the Neotropics. Using a revised point locality data for endemic species, we aimed to test for the first time the predictions of the vicariance model in shaping biogeographical regions for endemic snakes in the Atlantic Forest (AF) megadiverse hotspot. Location South American Atlantic Forest. Taxon Snakes (Reptilia, Serpentes). Methods To identify the non‐random groups of co‐distributed species, we mapped 21,101 point locality records in a grid cell of 0.5° × 0.5° across the AF, and constructed a presence–absence matrix of endemic species. The two major predictions of vicariance model were tested by Biotic Elements (BE) analysis, searching for groups of significantly co‐distributed species (Biotic Elements) by comparing distances between observed and artificial random ranges, produced under null models from Monte Carlo simulations. We also tested for the occurrence of sister species in different Biotic Elements, and compared our results with previous bioregionalization schemes revealed by other organisms in the AF. Results We recorded 252 species of snakes in the Atlantic Forest, of which 79 (31%) are endemic to this domain. Biotic Elements analysis with endemic species revealed seven clusters of co‐distributed species (BEs) corresponding to biogeographical regions. The significant non‐random clusters of geographical ranges revealed in BE analysis, and the distribution of sister species in different BEs, validated both central predictions of the vicariance model. Main conclusions Snakes defined non‐random biogeographical regions in the Atlantic Forest, and these were congruent with previously identified areas based on other groups of organisms, indicating that general processes influenced geographical ranges across the region. Both central predictions of the vicariance model were valid, indicating that vicariant events must have been important in shaping non‐random clusters of co‐distributed snakes in this biodiversity hotspot, harbouring some of the richest snake faunas on the planet.

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“…Thus, similar to the relevance of using intense sampling effort and complementary trap types to effectively characterize the number of species in the Cerrado habitat mosaic (up to 7-11 species per site; Ribeiro and Marinho-Filho, 2005;Bezerra et al, 2009;Carmignotto et al, 2014), sampling the canopy should also increase species richness in forests (Camargo et al, 2018). In fact, arboreal marsupials (e.g., Caluromys lanatus and C. philander) and rodents (e.g., Phyllomys centralis) were not or rarely captured in our study, suggesting that these species are exclusively or mostly captured using traps set in the canopy (Hannibal and Cáceres, 2010;Machado et al, 2018).…”

Section: Discussion Species Richness and Diversity Across Scalesmentioning

confidence: 63%

Habitat Heterogeneity and Geographic Location as Major Drivers of Cerrado Small Mammal Diversity Across Multiple Spatial Scales

2022

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The Cerrado biome is one of the global hotspots of biodiversity, and non-volant small mammals represent a significant portion of Cerrado species richness (45%) and endemism (86%). Nevertheless, we still lack a comprehensive picture of small mammal diversity patterns and drivers throughout the Cerrado. Here we surveyed small mammals across 45 sites to address species richness, abundance, and composition patterns and their drivers within and across sites, habitats, and localities at the world’s most diverse tropical savanna. As hypothesized, we found: (1) rich assemblages (12–21 species) characterized by few abundant and several intermediate-level and rare species; dominated by oryzomyine and akodontine cricetid rodents, and thylamyine and marmosine within marsupials, each tribe showing distinct habitat requirements; (2) strong habitat selectivity, with assemblages composed of forest dwellers, savanna specialists, and grassland inhabitants; and (3) similar species richness (α-diversity) but high species turnover (β-diversity) across sites, habitats, and localities, suggesting that horizontal stratification (within localities) and geographic location (across the Cerrado) are key drivers of small mammal diversity in tropical savannas. Thus, habitat heterogeneity and geographic location can be inferred as the main factors shaping species richness, abundance, and composition across the analyzed multiple spatial scales. Moreover, we found that geographical distance as well as the distance to neighbor biomes better explained species turnover, indicating landscape history and phylogenetic constraints as the major determinants of Cerrado small mammal diversity, as also evidenced for plants and other animal groups. These data highlight the need to preserve the mosaic of habitats across the different regions of the biome to conserve most of the Cerrado biodiversity.

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Phylogeny and biogeography of Phyllomys (Rodentia: Echimyidae) reveal a new species from the Cerrado and suggest Miocene connections of the Amazon and Atlantic Forest

Cited by 22 publications

References 35 publications

Potential mammalian species for investigating the past connections between Amazonia and the Atlantic Forest

Potential mammalian species for investigating the past connections between Amazonia and the Atlantic Forest

Vicariance and regionalization patterns in snakes of the South American Atlantic Forest megadiverse hotspot

Habitat Heterogeneity and Geographic Location as Major Drivers of Cerrado Small Mammal Diversity Across Multiple Spatial Scales

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