Trans-Atlantic, trans-Pacific and trans-Indian Ocean dispersal in the small Gondwanan Laurales family Hernandiaceae

	Trans-Atlantic, trans-Pacific and trans-Indian Ocean dispersal in the small Gondwanan Laurales family Hernandiaceae
	Michalak, Ingo; Zhang, Li-Bing; Renner, Susanne S.; Renner, SS, Univ Munich, Menzinger Str 67, D-80638 Munich, Germany
刊名	JOURNAL OF BIOGEOGRAPHY
	2010
卷号	37 期号:7 页码:1214-1226
关键词	Gondwana Hernandiaceae Historical Biogeography Laurales Long-distance Dispersal Molecular Clock Transoceanic Disjunctions
ISSN号	0305-0270
产权排序	2
英文摘要	Aim To investigate the historical biogeography of the pantropical flowering plant family Hernandiaceae (Laurales), which today comprises 62 species in five genera. Location Hernandiaceae occur in Africa (9 species), Madagascar (4), the Neotropics (25), Australia (3), southern China, Indochina, Malesia, and on numerous Pacific Islands (32). These numbers include two widespread species, Hernandia nymphaeifolia, which ranges from East Africa to the Ogasawara Islands and New Caledonia, and Gyrocarpus americanus, thought to have a pantropical range. Methods We sampled 37 species from all genera, the widespread ones with multiple accessions, for a chloroplast DNA matrix of 2210 aligned nucleotides, and used maximum likelihood to infer species relationships. Divergence time estimation relied on an uncorrelated-rates relaxed molecular clock calibrated with outgroup fossils of Lauraceae and Monimiaceae. Results The deepest split in the family is between a predominantly African-Madagascan-Malesian lineage comprising Hazomalania, Hernandia and Illigera, and an African-Neotropical lineage comprising Gyrocarpus and Sparattanthelium; this split may be 122 (110-134) Myr old. The stem lineages of the five genera date back at least to the Palaeocene, but six splits associated with transoceanic range disjunctions date only to the Oligocene and Miocene, implying long-distance dispersal. It is inferred that Hernandia beninensis reached the West African islands of Sao Tome and Bioko from the West Indies or the Guianas; Hernandia dispersed across the Pacific; and Illigera madagascariensis reached Madagascar from across the Indian Ocean. Main conclusions The disjunct ranges and divergence times of sister clades in the Hernandiaceae are partly congruent with the break-up of West Gondwana, but mostly with later transoceanic dispersal. An exceptional ability to establish following prolonged oceanic dispersal may be largely responsible for the evolutionary persistence of this small clade.
学科主题	Ecology ; Geography, Physical
语种	英语
公开日期	2011-07-08
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/22478]
专题	成都生物研究所_生态研究
通讯作者	Renner, SS, Univ Munich, Menzinger Str 67, D-80638 Munich, Germany
推荐引用方式 GB/T 7714	Michalak, Ingo,Zhang, Li-Bing,Renner, Susanne S.,et al. Trans-Atlantic, trans-Pacific and trans-Indian Ocean dispersal in the small Gondwanan Laurales family Hernandiaceae[J]. JOURNAL OF BIOGEOGRAPHY,2010,37(7):1214-1226.
APA	Michalak, Ingo,Zhang, Li-Bing,Renner, Susanne S.,&Renner, SS, Univ Munich, Menzinger Str 67, D-80638 Munich, Germany.(2010).Trans-Atlantic, trans-Pacific and trans-Indian Ocean dispersal in the small Gondwanan Laurales family Hernandiaceae.JOURNAL OF BIOGEOGRAPHY,37(7),1214-1226.
MLA	Michalak, Ingo,et al."Trans-Atlantic, trans-Pacific and trans-Indian Ocean dispersal in the small Gondwanan Laurales family Hernandiaceae".JOURNAL OF BIOGEOGRAPHY 37.7(2010):1214-1226.