1978
DOI: 10.1139/z78-049
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Age composition of some vespertilionid bats as determined by dental annuli

Abstract: Determination of age of several species of vespertilionid bats by counting incremental lines in dentine, cementum, and peridontal bone is described. The technique was most effective for aging Eptesicus fuscus and Lasionycteris noctivagans and less so for Myotis lucifugus. Incremental lines in specimens of Lasiurus cinereus and Lasiurus borealis were clearly defined, while those in a Myotis californicus were not. Longevity of E. fuscus and longevity and apparent age structure of M. lucifugus agree with the find… Show more

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Cited by 8 publications
(8 citation statements)
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“…Weakly discernible IL were also observed in the dentine of the Myotis lucifugus (Schowalter et al 1978, Phillips et al 1982 and M. velifer (Phillips et al 1982) as well as in cementum of the Desmodus rotundus (Linhart 1973). Phillips et al (1982) ascertained that: (1) the number of IL either in the dentine or cementum of the M. lucifugus and M. velifer was inadequate to age bats, (2) the number of the IL in the dentine and cementum of these species varied in relation to a level of cross-section as well as different teeth of the same bat may contain the distinct number of IL on the same level of section.…”
Section: Discussionmentioning
confidence: 90%
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“…Weakly discernible IL were also observed in the dentine of the Myotis lucifugus (Schowalter et al 1978, Phillips et al 1982 and M. velifer (Phillips et al 1982) as well as in cementum of the Desmodus rotundus (Linhart 1973). Phillips et al (1982) ascertained that: (1) the number of IL either in the dentine or cementum of the M. lucifugus and M. velifer was inadequate to age bats, (2) the number of the IL in the dentine and cementum of these species varied in relation to a level of cross-section as well as different teeth of the same bat may contain the distinct number of IL on the same level of section.…”
Section: Discussionmentioning
confidence: 90%
“…Well-discernible IL were revealed in the dentine of the Eptesicus fuscus and, like in the M. myotis, their number in the dentine was coincident with their number in the cementum and even in a peridontal bone (Schowalter et al 1978). Baagøe (1977) identified no correlation between the number of IL in the dentine and cementum in the N. noctula and P. pipistrellus.…”
Section: Discussionmentioning
confidence: 99%
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“…Reproductive status of adult females was recorded, as was the number and sex of fetuses of parous individuals. Ages of adult bats taken at two maternity roosts, a fall roost, and a sample of rabies-suspect individuals were determined from counts of dental annuli (Schowalter et al 1978). The first of January was arbitrarily used as the date on which bats became a year older: thus a bat classified as a l-yr-old was taken the summer after the summer of its birth.…”
Section: Methodsmentioning
confidence: 99%