Noteworthy sigmodontine (Rodentia: Cricetidae) diversity in southern Brazil as an indication of environmental change during the Holocene

Stutz, Narla Shannay; Hadler, Patrícia; Cherem, Jorge José; Fernández, Fernando Julián; Pardiñas, Ulyses F. J.; Ribeiro, Ana María

doi:10.1080/08912963.2018.1524470

Cited by 8 publications

(27 citation statements)

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“…In fact, local environmental changes have already been noted by Stutz et al . (), who demonstrated that Sangão has the highest small mammal richness of the studied sites, with more species associated with wetlands. In addition, the generalist pattern of faunal exploitation for hunter‐gatherers from northeastern Rio Grande do Sul State has been previously reported (Rosa ; Dias ).…”

Section: Resultsmentioning

confidence: 81%

“…Therefore, climate fluctuations during the Holocene might have caused the expansion of one of these areas and the retraction of the other, which might be reflected in successive faunal elements (Rodrigues 2008). In line with pollen investigations in southern Brazil (see Hadler et al 2013;Mourelle et al 2018; and the references cited therein), the evidence of small mammals at Garivaldino, Pilger and Sangão reflects changes in the species composition during the Holocene, which can be linked to a progressive transformation of the general landscape from mostly open grasslands in the Early Holocene to forests in the Late Holocene (Hadler et al 2008(Hadler et al , 2009(Hadler et al , 2013(Hadler et al , 2016Rodrigues 2008;Stutz et al 2017Stutz et al , 2018.…”

Section: Geographical Settingmentioning

confidence: 69%

“…However, the assemblages studied also included small‐ and medium‐sized cricetids locally extirpated, such as Necromys obscurus (dark bolo mouse), Oecomys catherinae (arboreal rice rat) and Reithrodon typicus (bunny rat), amongst others (Stutz et al . , ). Therefore, larger body size seems to be a common feature of the extinguished taxa, but the extinction process is not restricted to large rodents.…”

Section: Resultsmentioning

confidence: 99%

“…Both pollinic and faunal lines of evidence point to a progressive environmental change from open areas (grasslands) to forests in southern Brazil during the Holocene (Hadler et al . , , , ; Stutz et al . , ; Mourelle et al .…”

Section: Resultsmentioning

confidence: 99%

“…As often happens in rockshelters, these archaeological sites contain plenty of small mammal remains (marsupials, caviomorphs and sigmodontine rodents), which have been studied from a taxonomic and palaeoecological perspective (Hadler et al 2008(Hadler et al , 2009(Hadler et al , 2013(Hadler et al , 2016Rodrigues 2008;Stutz et al 2017Stutz et al , 2018. Nonetheless, the taphonomic study of these remains has scarcely been addressed.…”

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confidence: 99%

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Holocene small mammals hunted by owls and humans in southern Brazil: taphonomic evidence and biological significance

Fernández

Hadler

Cherem

et al. 2019

Boreas

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Understanding resource utilization and economic diversification amongst Holocene hunter‐gatherers in southern Brazil requires in‐depth taphonomic analysis of faunal assemblages. Three Early to Late Holocene archaeological sites (Garivaldino, Pilger and Sangão) in Rio Grande do Sul State, southern Brazil, revealed large assemblages of small mammal (˂1 kg) remains, composed mainly of rodents. To appreciate depositional processes of fauna in relation to human consumption, taphonomic attributes and processes were evaluated. The results indicated that the remains accumulated through different antemortem taphonomic pathways, apparently linked to the size and natural history of the species represented. The small‐ and medium‐sized (<150 g) cricetid rodents (e.g. Pseudoryzomys simplex and Sooretamys angouya) were represented by a low proportion of teeth with lightly digestive corrosion suggesting that they were derived from the predatory activity of owls, possibly Tyto alba. In contrast, large‐sized cricetids (>150 g; Kunsia tomentosus, Gyldenstolpia sp. and Holochilus sp.), and several caviomorph rodents with aggregated spatial distributions (Echimyidae (†Dicolpomys fossor, Phyllomys sp., †Clyomys riograndensis and †Euryzygomatomys mordax), Caviidae (Cavia sp.) and Ctenomyidae (Ctenomys sp.)) showed evidence of thermoalteration patterns and cut marks on bones, suggesting human exploitation. A postmortem depositional environment was deduced from dendritic and branched patterns of rootlet etching, apparent mostly at Garivaldino and Pilger. Polished areas and holes on bone surfaces, and impregnation of manganese showed moderate (Sangão) or low (Garivaldino and Pilger) incidence, pointing to water transport under moderate (Pilger) and low (Garivaldino and Sangão) energy over short distances. The results obtained here provide the first clear evidence of early human exploitation of small mammals in southern Brazil, suggesting a diversification of economies. In addition, as several of the recorded rodents are today regionally or biologically extinct, a preliminary discussion about the potential impact of humans on this process is provided.

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Section: Resultsmentioning

confidence: 81%

Section: Geographical Settingmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Holocene small mammals hunted by owls and humans in southern Brazil: taphonomic evidence and biological significance

Fernández

Hadler

Cherem

et al. 2019

Boreas

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Quaternary sigmodontines (Mammalia, Rodentia) from Serra da Bodoquena, Mato Grosso do Sul, Brazil

et al. 2020

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Pliocene sigmodontine rodents (Mammalia: Cricetidae) in northernmost South America: test of biogeographic hypotheses and revised evolutionary scenarios

et al. 2023

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We document the first occurrence of Sigmodontinae (Mammalia, Rodentia, Cricetidae) from the Pliocene of northern South America, from the San Gregorio Formation of northwestern Venezuela. The recovered isolated molars are identified as Oligoryzomys sp. and Zygodontomys sp., two currently widespread sigmodontines in South America. These records constitute the oldest representatives of these genera, potentially new species, and the first Pliocene occurrence for Oryzomyini and the whole subfamily outside Argentina. Hypotheses on the historical biogeography of sigmodontines have been constructed almost exclusively using genetic data and the fossils we report provide a new kind of evidence. The occurrence of Oligoryzomys sp. and Zygodontomys sp. in Venezuela provides novel information for the diversification models suggested for Oligoryzomys , by supporting a potential eastern corridor of open environments from northern to southern South America. The presence of sigmodontines from the locality home of the new reports, Norte Casa Chiguaje, is consistent with the palaeoenvironmental conditions originally proposed for it based on mammals and botanical records, being characterized as mixed open grassland/forest areas surrounding permanent freshwater systems. The new sigmodontine evidence is used to discuss the putative scenarios of the ancient evolution of the subfamily in South America, favouring a model in which open areas (savannahs) to the east of the Andes played crucial role aiding or obstructing Late Miocene–Pliocene sigmodontine dispersion southwards.

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Noteworthy sigmodontine (Rodentia: Cricetidae) diversity in southern Brazil as an indication of environmental change during the Holocene

Cited by 8 publications

References 58 publications

Holocene small mammals hunted by owls and humans in southern Brazil: taphonomic evidence and biological significance

Holocene small mammals hunted by owls and humans in southern Brazil: taphonomic evidence and biological significance

Quaternary sigmodontines (Mammalia, Rodentia) from Serra da Bodoquena, Mato Grosso do Sul, Brazil

Pliocene sigmodontine rodents (Mammalia: Cricetidae) in northernmost South America: test of biogeographic hypotheses and revised evolutionary scenarios

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