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  • 标题:Mortality in a predator-free insular environment : the dwarf deer of Crete. (American Museum novitates, no. 3807)
  • 本地全文:下载
  • 作者:Geer, Alexandra van der ; Lyras, G. A. ; MacPhee, R. D. E.
  • 期刊名称:American Museum Novitates
  • 印刷版ISSN:0003-0082
  • 电子版ISSN:1937-352X
  • 出版年度:2014
  • 卷号:2014
  • 语种:
  • 出版社:American Museum of Natural History
  • 摘要:Age-graded fossils of Pleistocene endemic Cretan deer (Candiacervus spp.) reveal unexpectedly high juvenile mortality similar to that reported for extant mainland ruminants, despite the fact that these deer lived in a predator-free environment and became extinct before any plausible date for human arrival. Age profiles show that deer surviving past the fawn stage were relatively long-lived for ruminants, indicating that high juvenile mortality was not an expression of their living a "fast" life. Although the effects on survivorship of such variables as fatal accidents, starvation, and disease are difficult to gauge in extinct taxa, the presence of extreme morphological variability within nominal species/ecomorphs of Candiacervus is consistent with the view that high juvenile mortality can function as a key innovation permitting rapid adaptation in insular contexts.
  • 关键词:Candiacervus.; Mortality.; Age determination.; Animal life cycles.; Cervidae; Fossil.; Deer; Fossil.; Island animals.; Island ecology.; Crete (Greece); Greece.
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