Bidirectional biotic interchange between Taiwan Island and Mainland China via land bridges—A case study of Obeidia Walker (Geometridae, Lepidoptera)

Author:

Cheng Rui1ORCID,Jiang Nan1,Luo A’rong1,Orr Michael2,Zhou Qingsong1,Shi Xiaoyu1,Han Hongxiang1,Zhu Chaodong134ORCID

Affiliation:

1. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology Chinese Academy of Sciences Beijing China

2. Entomologie, Staatliches Museum für Naturkunde Stuttgart Stuttgart Germany

3. College of Biological Sciences University of Chinese Academy of Sciences Beijing China

4. State Key Laboratory of Integrated Pest Management, Institute of Zoology Chinese Academy of Sciences Beijing China

Abstract

AbstractBiotic exchanges between Taiwan and Mainland China have shaped the biodiversity and ecosystems of both regions. Exchanges from Mainland China to Taiwan have received more attention, mainly studied in terrestrial vertebrates, while the reverse direction and invertebrates have largely been overlooked. Here, we explore the dispersal events between these two regions based on the moths of three species groups of Obeidia, including Taiwan taxa and its relatives from mainland. We conducted mixed methods and analysis, including reconstructing a phylogenetic tree, estimating associated divergence times and inferring ancestral areas and source regions, to explore the phylogeographical structure and genetic pattern of three groups based on eight genes. Our results revealed a structure of three clades and every clade included at least one Taiwanese taxa and its closest relatives of mainland of China, and also served Taiwan as an important source region of two mainland taxa. Our study revealed various origin pattern and dispersal models on the basis of three species groups of Obeidia. Bi‐directional biotic exchange via a land bridge were found: four Taiwanese taxa originated from mainland, and two of them migrated back to mainland. Both eastern Himalayas and south China are important origin areas for Taiwan biota, and the dominant source region may need multiple insect cases to confirm. Our study also provided evidences for disjunct distribution from the perspective of insecta molecular phylogeny.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Reference92 articles.

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