High Altitude Frogs (Rana kukonoris) Adopt a Diversified Bet-hedging Strategy in the Face of Environmental Unpredictability
文献类型：期刊论文
| 作者 | Gregory BROWN; Christopher R. FRIESEN; David A. PIKE; Lichun JIANG; Liqing PENG; Wei CHEN |
| 刊名 | Asian Herpetological Research
 |
| 出版日期 | 2018-03 |
| 卷号 | 9期号:1页码:43-49 |
| 关键词 | altitude bet-hedging strategy environmental quality egg size within-clutch variation unpredictable environment |
| DOI | 10.16373/j.cnki.ahr.170073 |
| 英文摘要 | Environmental unpredictability can influence strategies of maternal investment among eggs within a clutch. Models predict that breeding females should adopt a diversified bet-hedging strategy in unpredictable environments, but empirical field evidence from Asia is scarce. Here we tested this hypothesis by exploring spatial patterns in egg size along an altitudinal gradient in a frog species (Rana kukunoris) inhabiting the Tibetan Plateau. Within-clutch variability in egg size increased as the environment became variable (e.g., lower mean monthly temperature and mean monthly rainfall at higher altitudes), and populations in environments with more unpredictable rainfall produced eggs that were smaller and more variable in size. We provide support for a diversified bet-hedging strategy in high-altitude environments, which experience dynamic weather patterns and therefore are of unpredictable environmental quality. This strategy may be an adaptive response to lower environmental quality and higher unpredictable environmental variance. Such a strategy should increase the likelihood of breeding success and maximize maternal lifetime fitness by producing offspring that are adapted to current environmental conditions. We speculate that in high-altitude environments prone to physical disturbance, breeding females are unable to consistently produce the optimal egg size due to physiological constraints imposed by environmental conditions (e.g., duration of the active season, food availability). Species and populations whose breeding strategies are adapted to cope with uncertain environmental conditions by adjusting offspring size and therefore quality show a remarkable degree of ability to cope with future climatic changes. |
| 语种 | 英语 |
| 源URL | [http://210.75.237.14/handle/351003/29578]  |
| 专题 | 《亚洲两栖爬行动物研究》_2018_Vol.9, No.1 |
| 通讯作者 | Wei CHEN |
| 推荐引用方式 GB/T 7714 | Gregory BROWN,Christopher R. FRIESEN,David A. PIKE,et al. High Altitude Frogs (Rana kukonoris) Adopt a Diversified Bet-hedging Strategy in the Face of Environmental Unpredictability[J]. Asian Herpetological Research ,2018,9(1):43-49. |
| APA | Gregory BROWN,Christopher R. FRIESEN,David A. PIKE,Lichun JIANG,Liqing PENG,&Wei CHEN.(2018).High Altitude Frogs (Rana kukonoris) Adopt a Diversified Bet-hedging Strategy in the Face of Environmental Unpredictability.Asian Herpetological Research ,9(1),43-49. |
| MLA | Gregory BROWN,et al."High Altitude Frogs (Rana kukonoris) Adopt a Diversified Bet-hedging Strategy in the Face of Environmental Unpredictability".Asian Herpetological Research 9.1(2018):43-49. |
入库方式： OAI收割
来源：成都生物研究所
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