Range extension of Lundomys molitor (Winge, 1887) (Mammalia: Rodentia: Cricetidae) to eastern Rio Grande do Sul state, Brazil

Brandão, Marcus Vinícius; Fegies, Ana Cláudia

doi:10.15560/13.2.2101

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…In addition, differences in molar morphology have been highlighted between the Lagoa Santa material and living samples (Pardiñas & Teta, 2011). More important to the focus of the present study, Brandão & Fegies (2017) reported subtle differential traits between individuals from SLS and Uruguay. In this context, the nominal form Holochilus magnus, erected by Hershkovitz (1955) with a type locality in eastern Uruguay, deserves attention for its potential value in a much needed revision of Lundomys.…”

Section: Semi-deciduous Seasonal Forests In the Brazilian Pampa: Smalmentioning

confidence: 68%

“…Although we uncritically referred the studied Lundomys material to the single species today recognized for the genus, L. molitor (Winge, 1887), it is important to note that the species has its type locality in Lagoa Santa, Minas Gerais, about 1,500 km northeast of SLS, where it became extinct (Voss & Carleton, 1993;. Today, L. molitor is mostly known from populations in the Uruguayan territory and three adjacent Brazilian localities (Silveira et al, 2011;Voss, 2015;Brandão & Fegies, 2017). In addition, differences in molar morphology have been highlighted between the Lagoa Santa material and living samples (Pardiñas & Teta, 2011).…”

Section: Semi-deciduous Seasonal Forests In the Brazilian Pampa: Smalmentioning

confidence: 99%

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Small mammal diversity in Semi-deciduous Seasonal Forest of the southernmost Brazilian Pampa: the importance of owl pellets for rapid inventories in human-changing ecosystems

et al. 2020

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The Pampa biogeographic province covers a mere 2% of the Brazilian territory (176,496 km²). However, it stands out as a complex and diverse ecosystem, although its mammal communities are still scarcely understood. Human activities are transforming the territory into a mosaic of agroecosystems, native and exotic forest fragments, and grasslands. Here we conducted the first investigation to determine the richness of small mammal assemblages in the region based on extensive analyses of owl pellets (Tyto furcata). Craniodental remains were studied from samples collected from 12 Semi-deciduous Seasonal Forest sites in the municipality of São Lourenço do Sul, State of Rio Grande do Sul, Southern Brazil. A total of 2,617 individuals belonging to 19 taxa were recorded, including 2 marsupials (Didelphidae; 0.42%), 2 chiropterans (Molossidae, Phyllostomidae; 0.12%), and 15 rodents (Cricetidae, Muridae, Caviidae; 99.46%). The rodent genera Oligoryzomys, Mus, Calomys, and Akodon were the most common taxa. Large samples also included poorly known taxa, such as the cricetids Bibimys, Juliomys (recording here its southernmost occurrence), Lundomys, and Wilfredomys. From a biogeographical point of view, the recorded assemblage embraces a mixture of Platan, Pampean, and Atlantic Forest elements, highlighting the role of the southernmost Brazilian hills as a wedge favoring the penetration of forest micromammals to higher latitudes. Our findings testify to the great diversity of the Pampa, but also point to a growing homogeneity and dominance of rodent species that are widespread in agroecosystems. Rapid inventories based on owl pellets emerge as a suitable, economic, non-invasive tool to document these community changes.

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Section: Semi-deciduous Seasonal Forests In the Brazilian Pampa: Smalmentioning

confidence: 68%

Section: Semi-deciduous Seasonal Forests In the Brazilian Pampa: Smalmentioning

confidence: 99%

Small mammal diversity in Semi-deciduous Seasonal Forest of the southernmost Brazilian Pampa: the importance of owl pellets for rapid inventories in human-changing ecosystems

et al. 2020

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“…Selected noticeable examples are the Quaternary occurrence of Lundomysregistered from Minas Gerais in Brazil (Voss and Carleton 1993) to southern Buenos Aires Province in Argentina (Pardinas and Teta 2011). Its widespread past range (covering more than 15 degrees of latitude) contrast with its current geographic distribution restricted to less than 10 recording localities in Uruguay and southernmost Brazil (Voss 2015b, Brandao andFegies 2017). Large populations belonging toHolochilus have been recorded in Holocene deposits (Nuapua locality) of southern Bolivian Chaco (Pardinas and Galliari 1998) where today is neither Holochilus nor permanent water (Coltorti et al 2012).…”

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confidence: 99%

Undervalued habitat or impoverished guild? Exploring the scarcity of living semiaquatic sigmodontine rodents

Pardiñas

Soto

2023

Preprint

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Sigmodontines (Rodentia: Cricetidae), the largest living radiation of Neotropical rodents (90 genera, 489 species), show about 10% having specializations related to a semiaquatic habitat. In addition, this mode of life is unequally distributed among the several clades which compose the subfamily, concentrated in the Ichthyomyini and in a few large-bodied Oryzomyini. The observed taxonomical and geographical pattern is here discussed in a biogeographical historical context. As working hypothesis is advanced that the risk of predation (exerted by animalivorous fresh-water vertebrates) shaped and limited since the late Miocene the semiaquatic performance of the subfamily. Moreover, by exploring the fossil record can also be argued that during the Pleistocene is registered an important number of amphibious sigmodontines extinctions. Therefore, the scarcity of living semiaquatic sigmodontine rodents can be attributed to a combination of an undervalued habitat (mostly by risk of predation) plus a recent pauperization (by a sum of biological extinctions) of the members of that guild. A shallow comparison of the sigmodontine case against murids suggests that continental waterbodies resulted partially refractory to muroid colonizations.

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Range extension of Lundomys molitor (Winge, 1887) (Mammalia: Rodentia: Cricetidae) to eastern Rio Grande do Sul state, Brazil

Cited by 2 publications

References 8 publications

Small mammal diversity in Semi-deciduous Seasonal Forest of the southernmost Brazilian Pampa: the importance of owl pellets for rapid inventories in human-changing ecosystems

Small mammal diversity in Semi-deciduous Seasonal Forest of the southernmost Brazilian Pampa: the importance of owl pellets for rapid inventories in human-changing ecosystems

Undervalued habitat or impoverished guild? Exploring the scarcity of living semiaquatic sigmodontine rodents

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