Phylogenetic relationships, historical biogeography and character evolution of fig-pollinating wasps
Phylogenetic relationships, historical biogeography and character evolution of fig-pollinating wasps
复制标题
DOI：
10.1098/rspb.2000.1418
复制
发表时间：
2001-04-07
影响因子：
4.7
通讯作者：
Herre, EA
中科院分区：
文献类型：
--
作者：
Machado, CA;Jousselin, E;Herre, EA
细胞色素氧化酶 I (COI) 基因的核苷酸序列被用来重建 15 个无花果授粉黄蜂属之间的系统发育关系。我们提供的证据支持大多数但不是所有相应无花果组的广泛的共同分支发生。利用化石证据来校准这些数据的分子钟，我们估计无花果-黄蜂互利共生的起源大约发生在大约 1000 年。九千万年前。传粉昆虫属的估计分化时间及其当前的地理分布与白垩纪晚期南部大陆分裂的几个特征非常吻合。然后，我们探索了对互利共生双方都产生深远影响的两个特征的进化轨迹：宿主的繁殖系统（雌雄同体或雌雄异体）和黄蜂的授粉行为（被动或主动）。尽管相互作用者之间存在明显可识别的利益冲突，但无花果黄蜂互利共生表现出异常长期的进化稳定性，这反映在基本互利共生主题上发现的非常明显的变化。
Nucleotide sequences from the cytochrome oxidase I (COI) gene were used to reconstruct phylogenetic relationships among 15 genera of fig-pollinating wasps. We present evidence supporting broad-level co-cladogenesis with respect to most but not all of the corresponding groups of figs. Using fossil evidence for calibrating a molecular clock for these data, we estimated the origin of the fig-wasp mutualism to have occurred ca. 90 million years ago. The estimated divergence times among the pollinator genera and their current geographical distributions corresponded well with several features of the break-up of the southern continents during the Late Cretaceous period. We then explored the evolutionary trajectories of two characteristics that hold profound consequences for both partners in the mutualism: the breeding system of the host (monoecious or dioecious) and pollination behaviour of the wasp (passive or active). The fig-wasp mutualism exhibits extraordinarily long-term evolutionary stability despite clearly identifiable conflicts of interest between the interactors, which are reflected by the very distinct variations found on the basic mutualistic theme.