Summary
This field survey applied environmental DNA metabarcoding to search for an endangered microendemic desert fish (Rio Concepcion Topminnow) across Mexican freshwater habitats. Despite eDNA analysis and visual surveys over two consecutive years, the target species was not detected, suggesting either extinction or populations below detection thresholds. The study documents the presence of native species and recent invasive fish introductions whilst discussing methodological limitations of eDNA approaches in conservation monitoring.
Regional applicability
This study was conducted in Mexico and addresses Mexican desert fish conservation. Whilst the eDNA metabarcoding methodology may be transferable to United Kingdom freshwater surveys, the findings are specific to Mexican fish fauna and water system management challenges (groundwater recharge, wastewater treatment) distinct from UK contexts.
Key measures
Detection/absence of target fish species using eDNA metabarcoding; presence of native and introduced teleost species; detection limitations of eDNA approach
Outcomes reported
The study used eDNA metabarcoding (MiFish locus) to survey freshwater habitats in Rio De La Concepcion and Rio Santa Cruz in Sonora, Mexico over two years, failing to detect the endangered Rio Concepcion Topminnow (Poeciliopsis jackschultzi) but identifying native species and documenting invasive fish introductions.
Topic tags
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.