Food resources and competition rather than eco-geographic rules explain trait variations in two contrasting rat species: Implications for future climate change
文献类型：期刊论文
| 作者 | Cui, Jifa1,2; Lei, Boyu2; Newman, Chris4; Zhou, Youbing2; Wang, Zhiping1 |
| 刊名 | GLOBAL ECOLOGY AND CONSERVATION
 |
| 出版日期 | 2022 |
| 卷号 | 40 |
| 关键词 | Allen?s rule Bergmann?s rule Eco-geographical rule Food resource Hesse?s rule Temperature |
| DOI | 10.1016/j.gecco.2022.e02339 |
| 文献子类 | Article |
| 英文摘要 | Understanding how morphological traits are influenced by temperature, resource availability and competition is critical for predicting future ecosystem resilience to climate change. Here we tested the effects of biotic and abiotic factors, on the morphology of two contrasting Muridae species (Chinese white-bellied rats Niviventer confucianus [n = 565; 57.1 g] and Edwards's long-tailed giant rats Leopoldamys edwardsi [n = 45; 459.5 g]) in relation to Bergmann's, Allen's, Hesse's and Geist's eco-geographical rules along a 2900-m elevational gradient. Specifically, we tested the body size threshold theory, which posits that animals heavier than 0.16 kg are more likely to follow Bergmann's rule. We measured body length and mass, appendage lengths and heart mass for 610 adult specimens from 115 localities, and used principal components analysis to quantify food resource availability. Linear mixed models were employed to test these eco-geographical rules, along with the effects of associated biotic and abiotic factors. We found that for N. confucianus (< 0.16 kg), colder temperatures were associated with smaller body-size, contrary to Bergmann's rule, and with greater interspecific competition and food abundance (supporting Geist's rule). There was no support for Allen's rule, except for a contrary effect on snout length among females; however, greater intraspecific competition and lesser food abun-dance were associated with shorter snout length, supporting Geist's rule. Heart size increased with colder temperatures, but only among females, partly supporting Hesse's rule, and decreased with greater intraspecific competition for both sexes. L. edwardsi (> 0.16 kg) did not conform with any eco-geographic rules, and so we found no support for the body size threshold theory. Our study proposes that food resource abundance and inter-and intraspecific competition mediated variations in morphological traits in these rodent species to a greater extent than any reduction in temperature alone, giving little support for ecogeographical rule effects. We interpret that where food supply can meet energetic demands, even under colder conditions, then any selective pressure for thermal/energy efficiency through larger body size and shorter appendages will be alleviated. Considering the full range of inter-related factors that are affected by temperature, rather than just the bio-physics of heat loss, is important to better predict future climate change responses. |
| 学科主题 | Biodiversity Conservation ; Ecology |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 2351-9894 |
| WOS关键词 | BODY-SIZE EVOLUTION ; BERGMANNS RULE ; METABOLIC-RATE ; THERMAL NICHE ; MAMMALS ; MORPHOLOGY ; DIVERSITY ; RESPONSES ; MICE ; CONSEQUENCES |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000895802400011 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; [31971541] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28886]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.China Three Gorges Univ, Engn Res Ctr Ecoenvironm Three Gorges Reservoir Re, Yichang 443002, Hubei, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Univ Oxford, Recanati Kaplan Ctr, Dept Zool, Wildlife Conservat Res Unit, Tubney House, Abingdon OX13 5QL, England 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Jifa,Lei, Boyu,Newman, Chris,et al. Food resources and competition rather than eco-geographic rules explain trait variations in two contrasting rat species: Implications for future climate change[J]. GLOBAL ECOLOGY AND CONSERVATION,2022,40. |
| APA | Cui, Jifa,Lei, Boyu,Newman, Chris,Zhou, Youbing,&Wang, Zhiping.(2022).Food resources and competition rather than eco-geographic rules explain trait variations in two contrasting rat species: Implications for future climate change.GLOBAL ECOLOGY AND CONSERVATION,40. |
| MLA | Cui, Jifa,et al."Food resources and competition rather than eco-geographic rules explain trait variations in two contrasting rat species: Implications for future climate change".GLOBAL ECOLOGY AND CONSERVATION 40(2022). |
入库方式： OAI收割
来源：植物研究所
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