Genetic variation and population structure of a widely distributed damselfly (Ischnura senegalensis)

Author:

Jiang Bin1ORCID,Zhang Jiang1,Bai Xinrui1,Zhang Yongmei1,Yao Yu1,Li Jia1,Yu Guozhi2,He Shulin3,Sun Yang1,Mikolajewski Dirk J.4

Affiliation:

1. Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences Anhui Normal University Wuhu China

2. College of Life Science Sichuan Agricultural University Ya'an China

3. College of Life Sciences Chongqing Normal University Chongqing China

4. Institut für Biologie Freie Universität Berlin Berlin Germany

Abstract

AbstractIschnura senegalensis Rambur, 1842 is among the most widespread damselfly species in the world. Unlike dragonflies with strong migration abilities, I. senegalensis have limited dispersing abilities. Gene flow among I. senegalensis populations may be greatly influenced by anthropogenic disturbance, fragmented suitable habitats, sea straits, or even global warming. In this study, to investigate the genetic diversity of I. senegalensis populations, we sequenced and collected 498 cytochrome oxidase I sequences across the Old World. Haplotype network analysis showed 51 haplotypes and I. senegalensis could be grouped into four regions (Afrotropical region, Oriental region, main Islands of Japan, and the Ryukyu Islands), each of which contains different dominant haplotypes. Based on molecular variance analysis, we found that populations from the Afrotropical region have quite a low gene flow with the Asian populations (except Yemen). Furthermore, rice cultivation may aid the dispersion of I. senegalensis in the oriental region. Populations from the Ryukyu Islands show the highest genetic diversity, which may be due to the geological separation among islands. Our results prove that I. senegalensis has great genetic diversity among different populations across the world.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

Insect Science,General Medicine,Biochemistry,Physiology

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