DIVERSIFICATION OF DOMBEYOIDEAE (MALVACEAE) IN THE MASCARENES: OLD TAXA ON YOUNG ISLANDS?

	DIVERSIFICATION OF DOMBEYOIDEAE (MALVACEAE) IN THE MASCARENES: OLD TAXA ON YOUNG ISLANDS?
	Le Pechon, Timothee; Dai, Qiang; Zhang, Li-Bing; Gao, Xin-Fen; Sauquet, Herve
刊名	INTERNATIONAL JOURNAL OF PLANT SCIENCES
	2015
卷号	176 期号:3 页码:211-221
关键词	DETECTING TEMPORAL SHIFTS DAY GECKOS PHELSUMA INDIAN-OCEAN MOLECULAR PHYLOGENIES DIVERGENCE TIMES ADAPTIVE RADIATION DNA-SEQUENCES MIXED MODELS LA REUNION EVOLUTION
通讯作者	Le Pechon, T (reprint author), Univ KwaZulu Natal, Sch Life Sci, Private Bag X01, ZA-3209 Pietermaritzburg, South Africa.
产权排序	1
合作状况	国际
英文摘要	Premise of research.The patterns of diversification of Mascarene taxa remain largely unknown in comparison to other insular systems. Traditional interpretations of insular radiations often assume that endemic taxa radiated after the origin of the insular habitats on which they were established. The Dombeyoideae (Malvaceae) sublineage endemic to Mauritius and Reunion in the Mascarenes is an ideal model to test for the signature of insular diversification.Methodology.We combined molecular sequences for a dense sample of Mascarene dombeyoids together with African, Malagasy, and Asian outgroup species. We estimated divergence times based on two calibration schemes (including or excluding geological calibration). Comparative phylogenetic methods were used to study the diversification rates and the evolution of the floral disparity in the Mascarene clade.Pivotal results.Excluding geological constraints resulted in drastically older age estimates than when we included such calibrations. Diversification patterns suggest a decrease of diversification rates through time. The low morphological disparity indicates an early partitioning of floral characters.Conclusions.The lineage diversification and the morphological disparity are consistent with traditional scenarios of insular radiation. However, the Mascarene clade is older than Reunion and Mauritius, suggesting the onset of radiation before the formation of the archipelago. The diversification might have been driven by geographical opportunity rather than ecological opportunity.
学科主题	Plant Sciences
类目[WOS]	Plant Sciences
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/27539]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Le Pechon, Timothee,Dai, Qiang,Zhang, Li-Bing,et al. DIVERSIFICATION OF DOMBEYOIDEAE (MALVACEAE) IN THE MASCARENES: OLD TAXA ON YOUNG ISLANDS?[J]. INTERNATIONAL JOURNAL OF PLANT SCIENCES,2015,176(3):211-221.
APA	Le Pechon, Timothee,Dai, Qiang,Zhang, Li-Bing,Gao, Xin-Fen,&Sauquet, Herve.(2015).DIVERSIFICATION OF DOMBEYOIDEAE (MALVACEAE) IN THE MASCARENES: OLD TAXA ON YOUNG ISLANDS?.INTERNATIONAL JOURNAL OF PLANT SCIENCES,176(3),211-221.
MLA	Le Pechon, Timothee,et al."DIVERSIFICATION OF DOMBEYOIDEAE (MALVACEAE) IN THE MASCARENES: OLD TAXA ON YOUNG ISLANDS?".INTERNATIONAL JOURNAL OF PLANT SCIENCES 176.3(2015):211-221.