The presence of Wilfredomys oenax (Rodentia: Cricetidae: Sigmodontinae) in São Paulo state, southeastern Brazil: a locally extinct species?

Brandão, Marcus Vinícius

doi:10.1590/0031-1049.2015.55.04

Cited by 4 publications

(3 citation statements)

References 34 publications

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“…The unreported record from São Lourenço do Sul extends the distribution area of the species about 295 km from its The important role of specimens deposited in biological collections has been long debated through many different aspects of its importance (e.g., Patterson 2002;Vivo et al 2014;Brandão 2015;Ceríaco et al 2016). Our results reinforce the important role of scientific collections with continued maintenance, as the record presented here is from 1904, more than 100 years old.…”

Section: Notes On Geographic Distributionsupporting

confidence: 77%

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

Brandão¹,

Fegies²

2017

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Section: Notes On Geographic Distributionsupporting

confidence: 77%

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

Brandão¹,

Fegies²

2017

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“…The findings of the literature state that the decrease or increase in HR is caused by the selective activation of cardiac neurons in the amygdala and in the reticular formation, structures located in the cerebral cortex. The reticular formation is responsible for the regulation of alertness and subsidizes the attentional process and the amygdala is specifically related to emotions [ 22 ].…”

Section: Discussionmentioning

confidence: 99%

Resting Heart Rate and Auditory Evoked Potential

Regaçone

Lima

Valenti

et al. 2015

BioMed Research International

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The objective of this study was to evaluate the association between rest heart rate (HR) and the components of the auditory evoked-related potentials (ERPs) at rest in women. We investigated 21 healthy female university students between 18 and 24 years old. We performed complete audiological evaluation and measurement of heart rate for 10 minutes at rest (heart rate monitor Polar RS800CX) and performed ERPs analysis (discrepancy in frequency and duration). There was a moderate negative correlation of the N1 and P3a with rest HR and a strong positive correlation of the P2 and N2 components with rest HR. Larger components of the ERP are associated with higher rest HR.

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“…Vaz Ferreira (1960 highlighted differences between the type material and one specimen from Uruguay, and Pine (1980: 198) expanded these comparisons and concluded "further study may show that the Brazilian and Uruguayan populations are worthy of subspecific designation. " Our knowledge about the alpha taxonomy of Wilfredomys is poor (Machado et al, 2015), and specimens available for study are so scarce and fragmentary (Brandão, 2015) that non-geographic variation is difficult to assess (González et al, 2015: 106). However, taking into account that W. oenax comes from the hilly surroundings of SLS, despite its geographic proximity to Uruguayan localities, environmental differences could be associated with the reported variability.…”

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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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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The presence of Wilfredomys oenax (Rodentia: Cricetidae: Sigmodontinae) in São Paulo state, southeastern Brazil: a locally extinct species?

Abstract: The Rufous-

Cited by 4 publications

References 34 publications

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

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

Resting Heart Rate and Auditory Evoked Potential

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

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