GSTDTAP  > 地球科学
DOI10.1073/pnas.1712629115
Energetic tradeoffs control the size distribution of aquatic mammals
Gearty, William1; McClain, Craig R.2; Payne, Jonathan L.1
2018-04-17
发表期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
出版年2018
卷号115期号:16页码:4194-4199
文章类型Article
语种英语
国家USA
英文摘要

Four extant lineages of mammals have invaded and diversified in the water: Sirenia, Cetacea, Pinnipedia, and Lutrinae. Most of these aquatic clades are larger bodied, on average, than their closest land-dwelling relatives, but the extent to which potential ecological, biomechanical, and physiological controls contributed to this pattern remains untested quantitatively. Here, we use previously published data on the body masses of 3,859 living and 2,999 fossil mammal species to examine the evolutionary trajectories of body size in aquatic mammals through both comparative phylogenetic analysis and examination of the fossil record. Both methods indicate that the evolution of an aquatic lifestyle is driving three of the four extant aquatic mammal clades toward a size attractor at similar to 500 kg. The existence of this body size attractor and the relatively rapid selection toward, and limited deviation from, this attractor rule out most hypothesized drivers of size increase. These three independent body size increases and a shared aquatic optimum size are consistent with control by differences in the scaling of energetic intake and cost functions with body size between the terrestrial and aquatic realms. Under this energetic model, thermoregulatory costs constrain minimum size, whereas limitations on feeding efficiency constrain maximum size. The optimum size occurs at an intermediate value where thermoregulatory costs are low but feeding efficiency remains high. Rather than being released from size pressures, water-dwelling mammals are driven and confined to larger body sizes by the strict energetic demands of the aquatic medium.


英文关键词body mass Ornstein-Uhlenbeck metabolism phylogenetic comparative methods Mammalia
领域地球科学 ; 气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000430191900070
WOS关键词BENTHIC MARINE-INVERTEBRATES ; BODY-SIZE ; COPES RULE ; STABILIZING SELECTION ; TERRESTRIAL MAMMALS ; ADAPTIVE EVOLUTION ; EXTINCTION RISK ; BLUE WHALE ; MASS ; SPACE
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
URL查看原文
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/204901
专题地球科学
资源环境科学
气候变化
作者单位1.Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA;
2.Louisiana Univ Marine Consortium, Chauvin, LA 70344 USA
推荐引用方式
GB/T 7714
Gearty, William,McClain, Craig R.,Payne, Jonathan L.. Energetic tradeoffs control the size distribution of aquatic mammals[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(16):4194-4199.
APA Gearty, William,McClain, Craig R.,&Payne, Jonathan L..(2018).Energetic tradeoffs control the size distribution of aquatic mammals.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(16),4194-4199.
MLA Gearty, William,et al."Energetic tradeoffs control the size distribution of aquatic mammals".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.16(2018):4194-4199.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Gearty, William]的文章
[McClain, Craig R.]的文章
[Payne, Jonathan L.]的文章
百度学术
百度学术中相似的文章
[Gearty, William]的文章
[McClain, Craig R.]的文章
[Payne, Jonathan L.]的文章
必应学术
必应学术中相似的文章
[Gearty, William]的文章
[McClain, Craig R.]的文章
[Payne, Jonathan L.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。