Tempo and mode of evolution of oryzomyine rodents (Rodentia, Cricetidae, Sigmodontinae): A phylogenomic approach

Percequillo, Alexandre Reis; Prado, Joyce Rodrigues do; Abreu-Júnior, Edson Fiedler de; Dalapicolla, Jeronymo; Pavan, Ana Carolina; Chiquito, Elisandra de Almeida; Brennand, Pamella Gusmão de Góes; Steppan, Scott J.; Lemmon, Alan R.; Lemmon, Emily Moriarty; Wilkinson, Mark

doi:10.1016/j.ympev.2021.107120

Cited by 30 publications

(25 citation statements)

References 82 publications

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“…At the tribal level, we observed a strong relationship between landscape context-represented by the most common habitats in each locality-and taxonomic representativeness (see habitat selectivity mentioned below), attesting distinct habitat requirements by small mammal lineages, as hypothesized here and previously documented for birds (Silva, 1995(Silva, , 1997 and lizards (Nogueira et al, 2009). Such groups represent distantly related lineages (distinct orders, in the case of marsupials and rodents; distinct families in the case of cricetids and echimyids; and even the tribes within each subfamily are not sister lineages) with very distinct biogeographical histories (e.g., Jansa et al, 2014;Steppan and Schenk, 2017;Courcelle et al, 2019;Percequillo et al, 2021), evidencing the importance of phylogenetic constraints shaping Cerrado small mammal current diversity (Carmignotto et al, 2012).…”

Section: Discussion Species Richness and Diversity Across Scalessupporting

confidence: 74%

“…Carmignotto et al (2012) have already advanced the composite nature of Cerrado endemic mammals, with lineages dispersed and diversified into the Cerrado descending from neighboring forest biomes (Amazonian or Atlantic Forests), where they occupy forests (e.g., niche conservatism, the colonization of similar habitats) or open habitats (e.g., ecological opportunity, the colonization of distinct habitats; see Lv et al, 2016), and those descended from adjacent open biomes (Caatinga, Chaco, or Seasonally Dry Forests) maintaining their specialized openhabitat preferences (e.g., niche conservatism). New data on systematics and biogeography of these lineages demonstrate the complex evolutionary history of Cerrado small mammals, presenting a remarkable heterogeneous diversification across landscapes and time periods, with ancient lineages associated with both forest and open formation ancestors, as well as recent diversification events occurring throughout the open and forest Cerrado habitats (Giarla and Jansa, 2014;Pavan et al, 2016;Courcelle et al, 2019;Fegies et al, 2021;Percequillo et al, 2021;Prado et al, 2021;Saldanha and Rossi, 2021).…”

Section: Community Structurementioning

confidence: 99%

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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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Section: Discussion Species Richness and Diversity Across Scalessupporting

confidence: 74%

Section: Community Structurementioning

confidence: 99%

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

2022

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“…A combination of different delimitation criteria together with fieldwork and taxonomic revision efforts led to an increase in the number of recognized species and even description of new Oryzomyini genera in the last decade ( Percequillo, Weksler & Costa, 2011 ; Brito et al, 2020 ; Hurtado, 2021 ; Semedo et al, 2021 ), reflecting the high and hide rodent diversity of this group ( Burgin et al, 2018 ; D’Elía, Fabre & Lessa, 2019 ). At present, 30 extant genera compose this tribe ( Pardiñas et al, 2017 ; Brito et al, 2020 ; Percequillo et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Species limits and recent diversification ofCerradomys(Sigmodontinae: Oryzomyini) during the Pleistocene

Di-Nizo

Suárez-Villota

Silva

2022

PeerJ

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Cerradomys is a genus of the tribe Oryzomyini with eight species currently recognized, and a controversial taxonomy. These species are mainly distributed in the South America dry diagonal, but some species extend into Atlantic Forest, reaching the coastal sandy plains known as Restingas. This study aimed to address species limits and patterns of diversification of Cerradomys species. For this purpose, we performed cytogenetic and molecular analyses (phylogeny, coalescent species delimitation, barcoding, and divergence times estimation) using multiple mitochondrial and nuclear markers on a comprehensive sampling, representing all nominal taxa reported so far. Chromosomal information was a robust marker recognizing eight Cerradomys species. Reciprocal monophyly was recovered for all the species, except for C. subflavus. These results together with coalescent analyses recovered eight species as the most congruent species delimitation scenario for the genus (mean Ctax: 0.72). Divergence time estimates revealed that Cerradomys’ diversification occurred about 1.32 million years ago (Mya) during the Pleistocene. Although our results conservatively support the eight Cerradomys species described so far, different lines of evidence suggest that C. langguthi and C. subflavus could potentially be species-complexes. We discussed this scenario in the light of multiple evolutionary processes within and between species and populations, since Cerradomys comprises a species group with recent diversification affected by Pleistocene climatic changes and by the complex biogeographic history of South America dry diagonal. This work supports that the diversity of Cerradomys is underestimated and reiterates that interdisciplinary approaches are mandatory to identify small rodent species properly, and to unhide cryptic species.

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“…The tribe Oryzomyini comprises the largest living assemblage of sigmodontine rodents, with a diversity reaching 30 genera (Brito et al 2020;Percequillo et al 2021). This remarkable richness, however, encompasses several genera, knowledge of which is limited to basic aspects of craniodental anatomy and external traits evaluated from museum skins.…”

Section: Introductionmentioning

confidence: 99%

New morphological data on the rare sigmodontine Mindomys hammondi (Rodentia, Cricetidae), an arboreal oryzomyine from north-western Andean montane forests

Brito¹,

Tinoco²,

Curay³

et al. 2021

NBC

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The monotypic rodent Mindomys Weksler, Percequillo & Voss, 2006 (Cricetidae, Sigmodontinae) is one of the rarest members of the speciose tribe Oryzomyini. As this species is restricted to the Chocó forests of the western Andean slope in northern Ecuador, our knowledge is based on a few specimens collected decades ago. Here we add the first data on some aspects of external anatomy (cheiridia examined in fresh, ears, rhinarium), genital anatomy (penis), soft anatomy (palate, stomach, caecum) and postcranial skeleton retrieved from a full adult male, recently trapped in Reserva Drácula, Carchi, Ecuador. Several features of this specimen, paradoxically the first to be added to Ecuadorian mammal collections, reinforce the view that Mindomys is an arboreal sigmodontine.

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Tempo and mode of evolution of oryzomyine rodents (Rodentia, Cricetidae, Sigmodontinae): A phylogenomic approach

Cited by 30 publications

References 82 publications

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

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

Species limits and recent diversification ofCerradomys(Sigmodontinae: Oryzomyini) during the Pleistocene

New morphological data on the rare sigmodontine Mindomys hammondi (Rodentia, Cricetidae), an arboreal oryzomyine from north-western Andean montane forests

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