Discriminative host sanctions in a fig-wasp mutualism
文献类型：期刊论文
| 作者 | Wang RW[*]1; Dunn DW1,2; Sun BF1,3 |
| 刊名 | ECOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 95期号:5页码:1384-1393 |
| 关键词 | Agaonidae cooperation evolutionary stable strategy Ficus racemosa sex ratio symbiosis |
| 通讯作者 | ruiwukiz@hotmail.com |
| 合作状况 | 其它 |
| 英文摘要 | In some mutualisms, cooperation in symbionts is promoted by hosts sanctioning cheats, who obtain benefits but fail to reciprocate. In fig-wasp mutualisms, agaonid wasps pollinate the trees (Ficus spp.), but are also exploitative by using some flowers as larval food. Ficus can sanction cheats that fail to pollinate by aborting some un-pollinated figs. However, in those un-pollinated figs retained by trees, cheats successfully reproduce. When this occurs, wasp broods are reduced, suggesting sanctions increase offspring mortality within un-pollinated figs. We investigated sanction mechanisms of abortion and larval mortality against wasp cheats in the monoecious Ficus racemosa by introducing into figs 1, 3, 5, 7, or 9 female wasps (foundresses) that were either all pollen-laden (P+) or all pollen-free (P-). The abortion rates of P- figs were highest (approximate to 60%) when single foundresses were present. Abortion declined with increased foundresses and ceased with seven or more wasps present, irrespective of pollination. In un-aborted figs, wasp fitness (mean offspring per foundress) declined as foundress number increased, especially in P- figs. Reduced broods in P- figs resulted from increased larval mortality of female offspring as foundress number increased, resulting in more male-biased sex ratios. Overall sanctions estimated from both abortion rates and reduced offspring production strengthened as the number of cheats increased. In a second experiment, we decoupled pollination from wasp oviposition by introducing one pollen-free foundress, followed 24 h later by seven pollen-laden ovipositor-excised wasps. Compared with P+ and P- single-foundress figs, delayed pollination resulted in intermediate larval mortality and wasp fitness, which concurred with patterns of female offspring production. We conclude that fig abortion reflects both pollinator numbers and pollen presence. Sanctions within P- figs initiate soon after oviposition and discriminate against female offspring, thus reducing the benefits to cheats from adaptively biasing their offspring sex ratios. We suggest that costs to cheats via these discriminative sanctions are likely to promote stability in this mutualism. |
| 资助信息 | This research was supported by National Natural Science Foundation of China grants to Rui-Wu Wang (31270433, 31170408, Yunnan United Fund U1302267) and Derek W. Dunn (31370408), the National Science Fund for Distinguished Young Scholars (31325005), the West Light Foundation of the Chinese Academy of Sciences, and the Special Fund for the Excellent Youth of the Chinese Academy of Sciences (KSCX2-EW-Q-9). |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000336740500027 |
| 公开日期 | 2014-10-15 |
| 源URL | [http://159.226.149.42:8088/handle/152453/8049]  |
| 专题 | 昆明动物研究所_实验与理论生态学 昆明动物研究所_遗传资源与进化国家重点实验室 |
| 作者单位 | 1.State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Science, Kunming, Yunnan 650223 China 2.Statistics and Mathematics College, Yunnan University of Finance and Economics, Kunming, Yunnan 650221 China 3.Disease Genomics and Individualized Medicine Laboratory, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100101 China |
| 推荐引用方式 GB/T 7714 | Wang RW[*],Dunn DW,Sun BF. Discriminative host sanctions in a fig-wasp mutualism[J]. ECOLOGY,2014,95(5):1384-1393. |
| APA | Wang RW[*],Dunn DW,&Sun BF.(2014).Discriminative host sanctions in a fig-wasp mutualism.ECOLOGY,95(5),1384-1393. |
| MLA | Wang RW[*],et al."Discriminative host sanctions in a fig-wasp mutualism".ECOLOGY 95.5(2014):1384-1393. |
入库方式： OAI收割
来源：昆明动物研究所
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