Removal Efforts and Ecosystem Effects of Invasive Red Swamp Crayfish (<i>Procambarus clarkii</i>) in Topanga Creek, California

Garcia, C. Amanda; Montgomery, Elizabeth; Krug, Jenna; Dagit, Rosi

doi:10.3160/0038-3872-114.1.12

Cited by 6 publications

(7 citation statements)

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“…For the other two California localities (VEN and SYZ), we were also unable to unveil their origins accurately because their haplotypes were not shared with the native area; however, their private haplotypes were more evolutionarily related to Hap_04 and Hap_20, which would indicate again a possible origin from southeastern Louisiana. Given that crayfish populations in Topanga Creek were recently established (around 2001, Garcia, Montgomery, Krug, & Dagit, ), this population could come from previous established populations in California, having undergone a possible bottleneck. If so, we could be underestimating the haplotype diversity in the area and more haplotypes would be present in California.…”

Section: Discussionmentioning

confidence: 99%

Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

et al. 2019

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Understanding how introduced species succeed and become widely distributed within non‐native areas is critical to reduce the threats posed by them. Our goal was to reconstruct the main invasion routes and invasion dynamics of a global freshwater invader, the red swamp crayfish, Procambarus clarkii, through the analysis of its genetic variability in both native and invasive ranges. We inferred invasion routes and population structure from the analysis of a fragment (608 base pairs) of the mitochondrial marker cytochrome c oxidase subunit I from 1,062 individuals of P. clarkii in addition to 354 GenBank sequences, for a total of 122 populations (22 natives and 100 invaded). Genetic structure was assessed using analysis of molecular variance and non‐metric multidimensional scaling analyses. We analysed haplotype frequencies for the genetic variability in each locality and region. The haplotype network was depicted by using PopART software. A high haplotype diversity was found in the native range (haplotype diversity [Hd]: 0.90), but also in some non‐native areas, such as western U.S.A. (Hd: 0.80), areas of Mexico (Hd: 0.78), and some hotspots in Europe (e.g. southern Spain or Italy), suggesting a complex pattern of multiple introductions. We grouped all localities in five differentiated groups according to biogeographic origin: the native area, west Americas, east U.S.A., Asia, and Europe. Additionally, the identification of 15 haplotypes shared between at least two localities, the phylogenetic network estimation and indices of genetic differentiation among localities allowed us to identify a large genetic admixture in the native range; the two independent invasion routes (i.e. westwards and eastwards) in U.S.A. from the native range (Louisiana and Texas) with translocations within each area; a stepping‐stone introduction from U.S.A. to Japan (involving few individuals) themselves introduced to China afterwards; the entry of P. clarkii from Louisiana (U.S.A.) into southern Spain and their multiple secondary introductions over Europe as well as other possible introductions in central Europe. Our study emphasises the need for unravelling the global invasion routes and the demographic processes underlying the introduction of exotic species (i.e. admixture, bridgehead invasion effect, and propagule pressure) to control the spread of invasive species. Our findings highlight the value of genetic analyses to identify the geographic origin of source populations as well as the variability of invaded areas in order to reconstruct invasion dynamics and facilitate management of invasive species (e.g. through environmental DNA monitoring).

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Section: Discussionmentioning

confidence: 99%

Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

et al. 2019

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“…The decline in native species observed at the studied Fiddien Valley pond, indicates that P. clarkii's prolonged presence led to food web impairment as its opportunistic feeding behaviour on macrophytes and macrofauna (Alcorlo et al, 2004;van der Wal et al, 2013;Garcia et al, 2015) depleted most of the aquatic resources in its surrounding environment. The predatory behaviour towards tadpoles recorded in Chadwick Lakes, has caused the disappearance of this frog species in the Fiddien Valley pond too.…”

Section: Discussionmentioning

confidence: 98%

“…Moreover, it cannot be excluded that these crayfish might be carriers of exotic microorganisms, such as Aphanomyces astaci (Dieguez-Uribeondo et al, 1995;Aquiloni et al, 2011), spreading it to other crustaceans (Svoboda et al, 2014). In other freshwater systems throughout Europe this species has been found to drastically reduce the biomass and survival of establishing macrophytes (van der Wal et al, 2013) and macroinvertebrates (Garcia et al, 2015). While other recent research in Italy has found that some microfungal flora species living in its gut are potential phytopathogenic, making P. clarkii a potential vector of plant diseases (Garzoli et al, 2014), further increasing the risk to local biodiversity especially in an ecologically important Tree Protected Area, such as at Fiddien Valley (Government Notice 473, 2011).…”

Section: Discussionmentioning

confidence: 99%

“…These various attributes compounded by the intentional and accidental releases from the aquarium and aquaculture industry (GISD, 2017;Nunes et al, 2015) have a synergistic effect on the invasiveness of P. clarkii outside their natural range, making it the most widely distributed freshwater crayfish worldwide (Gherardi, 2006;Holdich et al, 2009). This has lowered native species richness in the areas it invades while causing the largest heterogeneity of impacts (Garcia et al, 2015). Procambarus clarkii is not the only introduced non-indigenous crayfish species (NICS), as the increasing influx of NICS is becoming a major concern in Europe (Savini et al, 2010), with almost every country having records of NICS (Nunes et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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First Scientific Records of the Invasive Red Swamp Crayfish, Procambarus clarkii (Girard, 1852) (Crustacea: Cambaridae) in Malta, a Threat to Fragile Freshwater Habitats

Vella¹,

Vella²,

Mifsud³

2017

Natural and Engineering Sciences

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This study reports the first records of the invasive fresh water red swamp crayfish, Procambarus clarkii in Malta, first spotted in the wild in summer 2016. In spring 2017, 26 specimens of P. clarkii were collected, sexed, measured and identified both morphologically and genetically. The distribution and density of the species along the same valley were investigated at Fiddien Valley and Chadwick Lakes. As these two locations are associated with one of the major valley systems that cross the island, the presence of this prolific, aggressive and opportunistic feeding crayfish species increases the vulnerability of native freshwater species.

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“…This type of contribution to the scientific knowledge basis was recently applied with success for example in the distribution and monitoring of non-indigenous and invasive marine species in the USA (Delaney et al, 2008) and Greece (Zenetos et al, 2013). Moreover, smartphone applications have been developed for the field identification of European crayfish (De Vaugelas et al, 2011) and even a student-based citizen science program was conducted to remove invasive crayfish (Garcia et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Freshwater crayfish distribution update and maps for Greece: combining literature and citizen-science data

Perdikaris

Konstantinidis

Georgiadis

et al. 2017

Knowl. Manag. Aquat. Ecosyst.

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-Crayfish are charismatic creatures of high interest to humans, among others playing key roles in freshwater ecosystems. Considering the significance of indigenous crayfish species (ICS) as well as the risks posed by non-indigenous crayfish species (NICS) that may dissemite a crayfish plague pathogen Aphanomyces astaci, astacological research has advanced particularly in Europe. In this context, crayfish distribution patterns are of fundamental importance. Focused on all crayfish established in the Greek wild, we provide an updated distribution and maps, combining extensive review of existing literature as well as newly emerging sources, largely represented by increasingly important citizen-science data. Obtained results demonstrate that ICS, mainly the Astacus astacus and Austropotamobius torrentium, remain relatively well settled in the country. The last ICS, Astacus leptodactylus, was translocated in few places outside its native range, leading to the formation of new flourishing populations and at least in one case it sustains commercial exploitation. Concerning NICS, a single population of Pacifastacus leniusculus is also established in the artificial lake Agra (Region of Central Macedonia) and keeps spreading. Unfortunately, there are only few methods under a very narrow range of conditions making successful eradication of unwanted NICS populations feasible. This option is even more difficult as this population is commercially exploited and traded. Since further potentially problematic NICS are also pet-traded in the country, educating public and communicating highlighted issues are the most effective ways limiting their releases and consecutive establishment in the wild.Keywords: Astacidae / biogeography / indigenous species / invasive species / mapping Résumé -Mise à jour de la distribution des écrevisses d'eau douce et cartes pour la Grèce : combinaison de données de littérature et de données de la science citoyenne. L'écrevisse est une créature charismatique d'un grand intérêt pour les humains, entre autres, qui joue un rôle clé dans les écosystèmes d'eau douce. Compte tenu de l'importance des espèces indigènes d'écrevisses (ICS) et des risques que représentent les espèces non indigènes d'écrevisses (NICS) qui peuvent disséminer un agent pathogène de la peste des écrevisses Aphanomyces astaci, la recherche astacologique a progressé particulièrement en Europe. Dans ce contexte, les schémas de distribution des écrevisses sont d'importance fondamentale. Centré sur toutes les écrevisses établies dans les milieux naturels grecs, nous fournissons une distribution et des cartes mises à jour, combinant une revue approfondie de la littérature existante ainsi que de nouvelles sources émergentes, largement représentées par des données de plus en plus importantes de la science citoyenne. Les résultats obtenus montrent que les ICS, principalement Astacus astacus et Austropotamobius torrentium, restent relativement bien implantés dans le pays. Le dernier ICS, Astacus leptodactylus, a été transféré en quelqu...

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Removal Efforts and Ecosystem Effects of Invasive Red Swamp Crayfish (Procambarus clarkii) in Topanga Creek, California

Cited by 6 publications

References 25 publications

Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

First Scientific Records of the Invasive Red Swamp Crayfish, Procambarus clarkii (Girard, 1852) (Crustacea: Cambaridae) in Malta, a Threat to Fragile Freshwater Habitats

Freshwater crayfish distribution update and maps for Greece: combining literature and citizen-science data

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