更新世爬行动物区系稳定性模型在颈蜥(Crotaphytus collaris)中的适用性的多学科研究

IF 1.1 2区 生物学 Q3 ZOOLOGY
D. Hutchison, S. Malcomber, L. S. Pletscher
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引用次数: 12

摘要

最近的古生物学证据表明,在整个更新世,北美的爬虫动物群在分类和生物地理上都非常稳定。然而,本文利用古生物学、生态学和分子遗传学数据,认为在更新世冰期,嗜热和适应干旱的领蜥(Crotaphytus collaris)并没有在其活动范围的北部地区持续存在。首先,对用于支持稳定性模型的古生物学数据的仔细审查显示,没有任何北方化石可以明确地追溯到冰川期。其次,欧扎克高原和弗林特山冰期的环境条件与颈蜥的适应性要求不相容。第三,种内mtDNA基因树的系统地理学分析表明,最近入侵了奥扎克和弗林特山。最后,微卫星数据在统计上与全新世的入侵一致,但与欧扎克或弗林特山的长期占领不一致。这些综合数据集提供了强有力的证据,证明项圈蜥蜴只有在更温暖、更干燥的间冰期才能占据它们活动范围的北部地区。其他嗜热和适应干旱的爬行动物物种可能会表现出类似的历史模式。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Multidisciplinary Investigation of the Applicability of the Pleistocene Herpetofaunal Stability Model to Collared Lizards (Crotaphytus collaris)
Recent paleontological evidence suggests the North American herpetofauna has been remarkably stable taxonomically and biogeographically throughout the Pleistocene. However, this paper uses paleontological, ecological, and molecular genetic data to argue that the thermophilous and xerically-adapted Collared Lizard (Crotaphytus collaris) did not persist in the northern parts of its range during glacial phases of the Pleistocene. First, a careful review of the paleontological data used to support the stability model reveals no northern fossils unambiguously dated to glacial phases. Second, environmental conditions inferred for the Ozark Plateau and Flint Hills during glacial phases were not compatible with fitness requirements of collared lizards. Third, phylogeographic analyses of an intraspecific mtDNA gene tree suggest a recent invasion of the Ozarks and Flint Hills. Finally, microsatellite data are statistically consistent with a Holocene invasion but not with long-term occupation of the Ozarks or the Flint Hills by collared lizards. These combined data sets provide strong evidence that collared lizards are able to occupy northern parts of their range only during the warmer, drier interglacials. Other thermophilous and xerically-adapted reptilian species might be expected to show similar historical patterns.
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来源期刊
Herpetological Monographs
Herpetological Monographs 生物-动物学
CiteScore
5.40
自引率
0.00%
发文量
2
审稿时长
>12 weeks
期刊介绍: Since 1982, Herpetological Monographs has been dedicated to original research about the biology, diversity, systematics and evolution of amphibians and reptiles. Herpetological Monographs is published annually as a supplement to Herpetologica and contains long research papers, manuscripts and special symposia that synthesize the latest scientific discoveries.
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