A first view of the unseen: nests of an endangered Atlantic Forest rat species

Bovendorp, Ricardo S.; Laskowski, Jessica; Percequillo, Alexandre Reis

doi:10.1515/mammalia-2015-0178

Cited by 2 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sigmodontines are generally small to medium‐sized cricetids, with the smallest species of about 12 g (e.g., Calomys musculinus [Thomas 1913], Salinomys delicatus Braun & Mares 1995) and the largest nearly 500 g (e.g., Kunsia tomentosus [Lichtenstein 1830]). In most species, neonates are highly altricial (i.e., they are not able to maintain a stable body temperature, born blind, hairless, with unerupted teeth, and sealed ears; Bovendorp et al, 2017; Canals et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Evolutionary patterns of cranial ontogeny in Sigmodontines (Rodentia, Cricetidae)

Segura

Flores

Jayat

et al. 2021

J Zool Syst Evol Res

View full text Add to dashboard Cite

Sigmodontines comprise one of the most diverse radiations of mammals. The cranial ontogeny has been studied in several mammals, but remains poorly studied in the group. We quantified the ontogenetic pattern for 22 sigmodontine species and 8 outgroups, generating partial reconstructions of ancestral allometric growth patterns, and testing the role of evolutionary history on cranial ontogeny. Sigmodontines were conservative in growth pattern, without unique patterns defining tribes. The allometric growth of the cranium was mostly negative, with Akodontini being the most isometric and Phyllotini the most allometric tribes. Allometry of variables associated with the neurocranium was mostly negative, while those linked to trophic functions showed positive allometry or isometry. A general cranial lengthening was detected, but variables associated with cranial width or height grew at lower rates. Cranial growth and development were associated with changes in the musculature functionally involved in bite and mastication. Most changes occurred in earlier postnatal stages, achieving an early morphological optimum. Few changes in the rate of growth at internal nodes were detected, and the stasis along the backbone was recurrent. Cranial elongation was a pattern widespread in the sample and likely a plesiomorphic condition. The few synapomorphies defining the ancestor of Sigmodontinae conform to a pattern with zygomatic arches little expanded laterally and globose braincases. The conservative pattern may be attributed to the biomechanically optimal morphology for omnivorous diets, suggesting that the generalized morphology allows the exploitation of multiple types of food with minor morphological adjustments.

show abstract

Section: Introductionmentioning

confidence: 99%

Evolutionary patterns of cranial ontogeny in Sigmodontines (Rodentia, Cricetidae)

Segura

Flores

Jayat

et al. 2021

J Zool Syst Evol Res

View full text Add to dashboard Cite

show abstract

“…The use of nests, burrows, and galleries is widespread and well documented in rodents (Lacey et al 2000;Begall et al 2007;Wilson et al 2016Wilson et al , 2017, including several genera of the subfamily Sigmodontinae (Formoso and Sánchez 2014;Patton et al 2015;Bovendorp et al 2017). Holochilus nests are usually above ground or water, from ground level up to 3 m high, and made with partially shredded grass or litter (Burmeister 1879;Moojen 1943;Yepes 1941;Llanos 1944;Moojen 1952;Twigg 1965;Barlow 1969;Massoia 1971Massoia , 1976Barreto and García-Rangel 2005;Sauthier et al 2010;Gonçalves et al 2015).…”

mentioning

confidence: 99%

Discovery of underground shelters occupied by the Chacoan Marsh Rat after massive wildfires in Pantanal, Brazil

Semedo¹,

Libardi

Strüssmann

et al. 2022

Therya notes

View full text Add to dashboard Cite

Las sequías e incendios forestales que afectaron el Pantanal, la mayor llanura inundada de Sudamérica, en 2020 impactaron fuertemente la biota, cuya resiliencia a estos tipos de eventos extremos todavía es desconocida. Durante muestreos posteriores a los incendios en sitios impactados, encontramos tres cuevas habitadas por la rata colorada chaqueña, Holochilus chacarius. Además, encontramos a un bagre calíctido (Hoplosternum sp.) y a un cangrejo tricodactílido (Dilocarcinus pagei) cohabitando una de las cuevas con H. chacarius. Reportamos, por primera vez, el uso de una cueva inundada por la rata colorada. Discutimos la importancia de dichas estructuras para la supervivencia posterior al incendio y si pueden servir como refugio para H. chacarius y otras especies a eventos extremos de incendios y sequía, a la luz de estudios previos con otros taxones.

show abstract

A first view of the unseen: nests of an endangered Atlantic Forest rat species

Abstract: For the first time, we observed and photographed nests of the elusive and endangered Russet rice rat,

Cited by 2 publications

References 24 publications

Evolutionary patterns of cranial ontogeny in Sigmodontines (Rodentia, Cricetidae)

Evolutionary patterns of cranial ontogeny in Sigmodontines (Rodentia, Cricetidae)

Discovery of underground shelters occupied by the Chacoan Marsh Rat after massive wildfires in Pantanal, Brazil

Contact Info

Product

Resources

About