Journal article 1368 views 179 downloads
Effect of artificial barriers on the distribution of the invasive signal crayfish and Chinese mitten crab
,
Sofia Consuegra del Olmo
Scientific Reports, Volume: 9, Issue: 1
Swansea University Authors:
Carlos Garcia De Leaniz , Sofia Consuegra del Olmo
-
PDF | Version of Record
Distributed under the terms of a Creative Commons Attribution Licence 4.0 (CC-BY)
Download (1.26MB)
DOI (Published version): 10.1038/s41598-019-43570-3
Abstract
The role of river obstacles in preventing or facilitating the dispersal and establishment of aquatic invasive species is controversial. Novel detection tools like environmental DNA (eDNA) can be used for monitoring aquatic invasive species (AIS) such as the American signal crayfish (Pacifastacus len...
| Published in: | Scientific Reports |
|---|---|
| ISSN: | 2045-2322 |
| Published: |
2019
|
| Online Access: |
Check full text
|
| URI: | https://cronfa.swan.ac.uk/Record/cronfa50442 |
| Abstract: |
The role of river obstacles in preventing or facilitating the dispersal and establishment of aquatic invasive species is controversial. Novel detection tools like environmental DNA (eDNA) can be used for monitoring aquatic invasive species (AIS) such as the American signal crayfish (Pacifastacus leniusculus) and the Chinese mitten crab (Eriocheir sinensis), providing information on the effect of barriers on their distribution. We analysed eDNA from both water and surface sediment in three river catchments (Medway, Dee and Stour; Great Britain), with differing levels of connectivity, to determine spatial distribution of the two species, and assessed the effect of barriers on their eDNA detection. Positive eDNA detections were obtained within confirmed sites for both species in all catchments, with evidence of species overlap in the River Medway. Upstream barriers in the Medway positively influenced detection success of mitten crab lower in the catchment while detection success of signal crayfish was higher in the highly fragmented catchment (River Medway). This information on the role of river barriers on AIS distribution and eDNA detection is important for management strategies and for predicting both future dispersal and likelihood of new colonisations in previously uninvaded fragmented catchments |
|---|---|
| College: |
Faculty of Science and Engineering |
| Issue: |
1 |