Fine-scale spatial genetic structure and gene dispersal in lake populations of submerged species

Wanhui CAO; Qian WANG; Qianjin CAO

doi:10.1007/s00343-024-4111-z

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Fine-scale spatial genetic structure and gene dispersal in lake populations of submerged species

Ecology | Updated：2025-05-27

- Fine-scale spatial genetic structure and gene dispersal in lake populations of submerged species
- Fine-scale spatial genetic structure and gene dispersal in lake populations of submerged species
- 海洋湖沼学报(英文) 2025年43卷第3期页码：831-847
- Affiliations：
  
  Institute of Evolution and Ecology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
- Author bio：
  
  caoqj1009@ccnu.edu.cn; caoqj1009@163.com
- Funds：
  
  the National Natural Science Foundation of China(31600325);the Self-determined Research Funds of the Central China Normal University (CCNU) from the Colleges’ Basic Research and Operation of MOE(CCNU20TS022)
- DOI：10.1007/s00343-024-4111-z
  中图分类号：
- 收稿：2024-04-16，
  
  网络首发：2024-06-12，
  
  纸质出版：2025-05-01
- Accepted：
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Fine-scale spatial genetic structure and gene dispersal in lake populations of submerged species[J]. 海洋湖沼学报(英文), 2025,43(3):831-847.

CAO Wanhui,WANG Qian,CAO Qianjin.Fine-scale spatial genetic structure and gene dispersal in lake populations of submerged species[J].Journal of Oceanology and Limnology,2025,43(03):831-847.
Fine-scale spatial genetic structure and gene dispersal in lake populations of submerged species[J]. 海洋湖沼学报(英文), 2025,43(3):831-847. DOI： 10.1007/s00343-024-4111-z.

CAO Wanhui,WANG Qian,CAO Qianjin.Fine-scale spatial genetic structure and gene dispersal in lake populations of submerged species[J].Journal of Oceanology and Limnology,2025,43(03):831-847. DOI： 10.1007/s00343-024-4111-z.

摘要

Abstract

To assess the population development of submerged plant species in disturbed lake ecosystems

we need to better understand the genetic diversity and spatial genetic structure at a fine scale

as well as the impact of disturbances on the populations. Caohai Lake

in southwest China

is a suitable natural sampling lake because of its abundance of submerged plants and the intense human disturbance. Three widely distributed species

Potamogeton

lucens

Ceratophyllum

demersum

and

Myriophyllum

spicatum

were sampled; the spatial position of e

ach individual was recorded in two-dimensional coordinates; and the species were analyzed genetically using microsatellite markers. Among the species studied

spicatum

exhibited the highest genetic and clonal diversities. All

lucens

subpopulations but one showed a significant fine-scale spatial genetic structure (FSGS)

which may result from the limited gene dispersal. However

spicatum

and

demersum

with a relatively large distance of gene dispersal

had no significant FSGS. The FSGS pattern of

lucens

at the dock site with intense boat disturbance was significantly different from that at other sites. Our results imply that the FSGS of submerged plants is affected by many factors including seed dispersal

vegetative reproduction and disturbance from birds and boats. Most subpopulations of the three species had

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=81359203&type=

3.47133350

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=81359194&type=

9.48266602

values gr

eater than one

implying that the sexual dispersal contributes more than vegetative dispersal to total gene dispersal. Therefore

it is worth paying attention to the importance of seed dispersal for population development of submerged plants in lake ecosystems.

关键词

Keywords

references

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