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Reconstruction of individual life histories of rodents from their teeth and bone

100%

Klevezal G. A.

Acta Theriologica. Supplement

2002

tom 47

nr 1

Age changes of bone tissue and molar cementum, and formation of daily layers in dentin of incisors enable us to estimate age and maximum lifespan, season of birth, season of death, sexual maturation, sex in adults, and in combination with tetracycline prebaiting, movements and space distribution of rodents. In hibernating rodents, the hibernation zone formed in incisor dentin can be used to assess inter- and intrapopulation variations in seasonal activity and growth. This approach is illustrated by examples from the study of rodents of the genera Apodemus and Sicista.

Daily layers and hibernation marks in incisor dentin of Sicista pseudonapaea and some biological remarks

63%

Klevezal G. A. , Mina G. A.

Acta Theriologica

1990

tom 35

nr 3-4

Incisor growth in voles

51%

Klevezal G. A. , Pucek M. , Sukhovskaja L. I.

Acta Theriologica

1990

tom 35

nr 3-4

The record of the reproductive cycle in the incisor dentine of spotted souslik Spermophilus suslicus

51%

Trunova Y. E. , Lobkov V. A. , Klevezal G. A.

Acta Theriologica

1999

tom 44

nr 2

To examine the changes in dentine microstructure in spotted souslik Spermophilus suslicus (Giildenstaedt, 1770) during pregnancy, parturition and lactation, we investigated 39 females from the Odessa region. Thirty females were dead-trapped in March-July, 1987-1997, nine females (lactating or pregnant) were caught in April, 1996, injected with tetracycline as a time marker and kept in captivity during 14-47 days. Their litters survived from 1 to 29 days. We analyzed cross stained sections as well as cross ground sections of upper incisors. In the lactating sousliks both in nature and in captivity the daily layers formed in the course of pregnancy were followed by formation of a specific dentine pattern. The pattern consisted of alternating contrastive hypo- chromatic and hyperchromatic bands of about 30-50 n wide. The beginning of the pattern formation coincided approximately with parturition and the formation continued during lactation. Therefore, the parturition-lactation zone could be the correct name for the pattern. In captured females no correlation between the duration of the pattern formation and the lifespan of their litters was found. The pattern was absent in immature and barren females. We found no changes in the dentine formation during pregnancy.