Incisor growth rate in rodents and the record of the entire annual cycle in the incisors of Marmota baibacina centralis

Klevezal, G. A.; Shchepotkin, D. V.

doi:10.1134/s1062359012080079

Cited by 15 publications

(11 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Foraging ranges and natal and breeding dispersals are over very short distances, usually less than a few hundred meters (Longhurst, ; Fitzgerald & Lechleitner, ). Rodent incisors never stop precipitating hydroxyapatite throughout the life cycle of the individual and provide annual or seasonal records of climate and foods consumed by the animal (Klevezal & Shchepotkin, ). Tooth enamel in prairie dogs grows primarily during late spring and summer (Goodwin & Ryckman, ), and slows or ceases during hibernation.…”

Section: Ecological Backgroundmentioning

confidence: 99%

Isotopic Evidence for Long‐Distance Mammal Procurement, Chaco Canyon, New Mexico, USA

2016

View full text Add to dashboard Cite

Previous research on the prehistoric communities of Chaco Canyon, New Mexico (ca. A.D. 800–1250) provides evidence of an extensive procurement system of nonlocal food and economic goods. In this paper, we use oxygen and strontium isotope analyses to establish whether animal protein followed a similar pattern. We contextualized our isotopic analyses of the archaeofaunas from recent excavations at Pueblo Bonito with data on modern faunas across an area of approximately 100,000 km2 around the site. Our results show that most archaeological deer, rabbits, and prairie dogs were obtained from >40 km away from Pueblo Bonito with the latter two likely being garden hunted. The Chuska Mountains west of Chaco Canyon and more distant San Juan Mountains to the north were the main source areas. These results closely align with previous results on architectural wood, corn, and other key resources. The importation of small game animals suggests that the local supplies could not meet the needs of the community. Long‐distance meat procurement may have been embedded within a more complex network of ritual‐goods exchange or tribute that helped to offset the transport costs. Resource depletion may have contributed to the eventual abandonment of the region during the Medieval Warm Period.

show abstract

Section: Ecological Backgroundmentioning

confidence: 99%

Isotopic Evidence for Long‐Distance Mammal Procurement, Chaco Canyon, New Mexico, USA

2016

View full text Add to dashboard Cite

show abstract

“…"Hibernation record" is a series of narrow and well-defined increments within the "hibernation zone", unlike the wider daily increments. This phenomenon has been described for many hibernating rodents (Rinaldi, 1999;Goodwin, Ryckman, 2006;Klevezal, Lobkov, 2008;Klevezal, Shchepotkin, 2012).…”

Section: Introductionmentioning

confidence: 61%

Hibernation Records on the Incisor Surface in the Turkish Hamster (Mesocricetus brandti) (Rodentia, Cricetidae)

Зайцева

Chunkov

Omarov

2020

Povolžskij èkologičeskij žurnal

View full text Add to dashboard Cite

The teeth of an adult female of the Turkish hamster (Mesocricetus brandti) after hibernation in semi-natural conditions were examined to reveal a relationship between the hibernation pattern on the incisor surface and the data of a temperature logger. The female spent the winter in a burrow prepared by herself inside a wintering cage from October 2018 till May 2019. A temperature logger was implanted to the animal intraperitoneally to record body temperature at 20-min intervals. Regular bouts of hypothermia started in mid-October. The longevity of each hypothermia bout increased whereas the minimum body temperature decreased and reached its lowest value in March. Later, the process proceeded backwards until the end of the heterothermia period. In the apical region of the incisor, daily increments were wide and well-distinguished which indicates that they had formed before the onset of the heterothermal period. In the basal region, closer to the growth zone, the increments were narrow and distinct, and their number corresponded in general to the number of normothermia episodes bouts. At the very base of the incisor as well as at its apical part, typical daily increments were revealed again. However, no correlation between the longevity of normothermia bouts and the width of increments was found. These data varied greatly from two other hamsters. In the Ciscaucasian hamster (Mesocricetus raddei) the number and character of increments comply with the number and duration of normothermia bouts, in the Common hamster (Cricetus cricetus), the “hibernation zone” was not recorded on the incisor surface. The Turkish hamster demonstrate an intermediate pattern, which we explain by quite different hibernation conditions of these species.

show abstract

“…differences in growth rate due to ontogeny or species/individual variance). In modern ever-growing dentitions, these regular growth marks have been demonstrated to vary with factors such as age 22 , species of varying metabolisms 23 , and dentine deposition is sensitive to nutrient inputs 24 . Completely controlling for alternative sources of variation was particularly difficult given the small and fragmentary nature of the specimens that were available for destructive sampling, however, we consider these regular growth marks to be at least a general control for those sources of variation in growth that are unrelated to seasonality.…”

Section: Resultsmentioning

confidence: 99%

Evidence of torpor in the tusks of Lystrosaurus from the Early Triassic of Antarctica

Whitney

Sidor

2020

Commun Biol

View full text Add to dashboard Cite

Antarctica has hosted a wide range of ecosystems over the past 500-million years. Early in the Mesozoic, the Antarctic portion of southern Pangaea had a more habitable climate, but its position within the polar circle imposed extreme photoperiod seasonality on its resident flora and fauna. It remains unclear to what degree physiological adaptations underpinned the ability of tetrapods to establish the terrestrial communities captured in the fossil record. Here we use regular and stressful growth marks preserved in the dentine of ever-growing tusks of the Early Triassic mammalian predecessor, Lystrosaurus, to test for adaptations specific to this polar inhabitant. We find evidence of prolonged stress indicative of torpor when compared to tusk samples from non-polar populations of Lystrosaurus. These preliminary findings are to our knowledge the oldest instance of torpor yet reported in the fossil record and demonstrate unexpected physiological flexibility in Lystrosaurus that may have contributed its survivorship through the Permo-Triassic mass extinction.

show abstract

Incisor growth rate in rodents and the record of the entire annual cycle in the incisors of Marmota baibacina centralis

Cited by 15 publications

References 20 publications

Isotopic Evidence for Long‐Distance Mammal Procurement, Chaco Canyon, New Mexico, USA

Isotopic Evidence for Long‐Distance Mammal Procurement, Chaco Canyon, New Mexico, USA

Hibernation Records on the Incisor Surface in the Turkish Hamster (Mesocricetus brandti) (Rodentia, Cricetidae)

Evidence of torpor in the tusks of Lystrosaurus from the Early Triassic of Antarctica

Contact Info

Product

Resources

About