Monitoring the silver carp invasion in Africa : a case study using environmental DNA (eDNA) in dangerous watersheds

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dc.contributor.authorCrookes, Stevenen_ZA
dc.contributor.authorHeer, Tejen_ZA
dc.contributor.authorCastaieda, Rowshyra A.en_ZA
dc.contributor.authorMandrak, Nicholas E.en_ZA
dc.contributor.authorHeath, Daniel D.en_ZA
dc.contributor.authorWeyl, Olaf L. F.en_ZA
dc.contributor.authorMacIsaac, Hugh J.en_ZA
dc.contributor.authorFoxcroft, Llewellyn C.en_ZA
dc.date.accessioned2020-05-06T08:41:34Z
dc.date.accessioned2021-08-25T12:35:27Z
dc.date.available2020-05-06T08:41:34Z
dc.date.available2021-08-25T12:35:27Z
dc.date.issued2020-04-29
dc.descriptionCITATION: Crookes, S., et al. 2020.Monitoring the silver carp invasion in Africa : a case study using environmental DNA (eDNA) in dangerous watersheds. NeoBiota 56: 31-47, doi:10.3897/neobiota.56.47475.
dc.descriptionThe original publication is available at https://neobiota.pensoft.net
dc.description.abstractBiodiverse habitats are increasingly subject to an intensification of anthropogenic stressors that may severely diminish species richness. Invasive species pose a dominant threat to biodiversity and biosecurity, particularly in biodiversity hotspots like Kruger National Park, South Africa. The invasive silver carp, Hypophthalmichthys molitrix, was introduced into the Olifants River and may experience range spread owing to favorable environmental conditions. Intensive monitoring protocols are necessary to effectively manage invasions of species like silver carp. Unfortunately, tropical and sub-tropical aquatic systems are difficult to monitor using conventional methods (e.g., netting, electrofishing and snorkeling) owing to a range of factors including the presence of dangerous megafauna. Conservation of such systems may be advanced by the adoption of novel methods, including environmental DNA (eDNA) detection. Here, we explore the utility of environmental DNA (eDNA) to conduct safe, reliable and repeatable surveys in dangerous watersheds using silver carp as a case study. We conducted eDNA surveys at 12 sites in two neighbouring watersheds, and determined that the species has expanded its range within the Olifants River and to the south in the Sabie River. Expansion in the former is consistent with the presence of suitable spawning conditions. We discuss the implications of this survey for biodiversity monitoring in similar aquatic systems in the tropics and advocate an integrative approach to biomonitoring in these ecosystems.en_ZA
dc.description.urihttps://neobiota.pensoft.net/article/47475/
dc.description.versionPublisher's version
dc.format.extent17 pages : illustrations (some color), mapsen_ZA
dc.identifier.citationCrookes, S., et al. 2020.Monitoring the silver carp invasion in Africa : a case study using environmental DNA (eDNA) in dangerous watersheds. NeoBiota 56: 31-47, doi:10.3897/neobiota.56.47475
dc.identifier.issn1314-2488 (online)
dc.identifier.issn1619-0033 (print)
dc.identifier.otherdoi:10.3897/neobiota.56.47475
dc.identifier.urihttp://hdl.handle.net/10019.1/112597
dc.language.isoenen_ZA
dc.publisherPensoft Publishers
dc.rights.holderAuthors retain copyright
dc.subjectAsian carp -- Ecologyen_ZA
dc.subjectBiomonitoringen_ZA
dc.subjectEnvironmental monitoring -- Africaen_ZA
dc.subjectSilver carp -- Environmental aspectsen_ZA
dc.subjectInvasive speciesen_ZA
dc.subjectHazardous samplingen_ZA
dc.subjectSilver carp -- Monitoringen_ZA
dc.titleMonitoring the silver carp invasion in Africa : a case study using environmental DNA (eDNA) in dangerous watershedsen_ZA
dc.typeArticleen_ZA
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