First record of an Asian tongueworm, Raillietiella orientalis (Pentastomida: Raillietiellidae),  parasitizing a Tokay Gecko, (Gekko gecko, Squamata: Gekkonidae): a novel interaction between two non-native species in Florida

Fieldsend, Thomas W.; Miller, Melissa A.; Harman, Madison E.A.

doi:10.17161/randa.v28i2.15238

Cited by 6 publications

(4 citation statements)

References 11 publications

(18 reference statements)

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“…Hybridisation between G. g. gecko and Form B in Florida would itself be a concern, given that hybridisation can increase the invasive success of non-native organisms (e.g., Facon et al 2005). Further study should thus be conducted to determine if hybridisation is occurring, and to establish whether it increases the risk posed to Florida’s native biodiversity by what may already be an invasive taxon (Fieldsend et al 2021a, Fieldsend et al 2021b).…”

Section: Discussionmentioning

confidence: 99%

“…One aim of this study was to establish whether multiple distinct forms of red-spotted tokay gecko—specifically, G. g. gecko and Form B—have indeed been introduced to Florida, as hypothesised by Fieldsend et al (2021b). This is important partly because hybridisation or admixture between distinct forms could lead to elevated population-level genetic diversity (e.g., Kolbe et al 2004, Kolbe et al 2007) or ‘hybrid vigour’ (Facon et al 2005), and thus increase the invasive potential (Facon et al 2005, Lavergne and Molofsky 2007, Crawford and Whitney 2010, Wagner et al 2017, Smyser et al 2020) of what may already be an invasive taxon (Fieldsend et al 2021a, Fieldsend et al 2021b). Moreover, distinct forms of tokay gecko could differ markedly in life history traits relevant to establishment success in Florida (e.g., bioclimatic niche; Zhang et al 2014), and thus pose differing degrees of threat to Florida’s native biodiversity.…”

Section: Introductionmentioning

confidence: 99%

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Genotypic and phenotypic evidence indicates the introduction of two distinct forms of a non-native species (Gekko gecko) to Florida, USA

Fieldsend

Rösler

Krysko

et al. 2023

Preprint

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The red-spotted tokay geckoGekko gecko(Linnaeus, 1758) is a widely distributed Asian gecko that has established outside of its native range in Florida, USA. This study used genotypic and phenotypic data to determine whether multiple, distinct forms of red-spotted tokay gecko are present in Florida, specifically the morphologically distinct "G. g. gecko" and "Form B". Two discrete mitochondrial clades (ND2) were identified in Florida tokay geckos, the native range distributions of which were found to correspond closely with the native ranges ofG. g. gecko(the Malay Archipelago) and Form B (mainland Asia), respectively. Furthermore, each mitochondrial clade was non-randomly associated with a separate nuclear (RAG-1) clade, supporting the existence of two discrete genotypic lineages, representative ofG. g. geckoand Form B. Both lineages were detected in Florida, and population-level morphological structure was non-randomly associated with genotype, confirming a genotype-phenotype link. Multiple lines of evidence thus indicate the introduction of both forms of tokay gecko to Florida, where hybridisation likely also occurs. The link between morphological Form B and a unique genotypic lineage also indicates the existence of a tokay gecko taxon distinct from the recognised subspeciesG. g. azhariMertens, 1955 andG. g. gecko(Linnaeus, 1758).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genotypic and phenotypic evidence indicates the introduction of two distinct forms of a non-native species (Gekko gecko) to Florida, USA

Fieldsend

Rösler

Krysko

et al. 2023

Preprint

Self Cite

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“…In Florida, R. orientalis uses many wild squamates as definitive hosts, including species that are commonly part of the pet trade, including Burmese pythons ( Python bivittatus ), corn snakes ( Pantherophis guttatus ), 12 tegus ( Salvator merianae ), 6 and tokay geckos ( Gekko gecko ). 5 Here we report R. orientalis infecting a pet snake.…”

mentioning

confidence: 82%

The invasive pentastome Raillietiella orientalis in a banded water snake from the pet trade

2023

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Raillietiella orientalis is established in Florida and rapidly spreading both geographically and in known host species. A banded water snake ( Nerodia fasciata), purchased in Michigan at a regional reptile show, expectorated a pentastome whose morphology and DNA sequence indicated that it was R. orientalis. This event indicates that, through the pet trade, R. orientalis has been spread 1,500 km from its previously known distribution limit. Fecal sample analyses indicated that the snake was shedding large numbers of embryonated eggs for at least several months. The diversity of reptile species that are both known hosts of R. orientalis in Florida and are commonly sold in the pet trade indicates that this invasive pentastome may become a widespread health concern for pet owners and veterinarians.

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“…Both P. grandis, P. laticauda as well as several other Phelsuma species (e.g., P. kochi ) are known to prey on other gecko specimens of smaller size (Gehring et al 2010; Buckland et al 2014; Rakotozafy 2019), which suggests potential predation risks to smaller species or juveniles of similar-sized species. Their introduction also raised concerns regarding the risk of disease and parasite transmission to native species (Dervin et al 2014; Barnett et al 2018; Fieldsend and Krysko 2019; Fieldsend et al 2021b; Unger et al 2022), despite no evidence of cross-species infection having been found so far (Goldberg and Bursey 2000; Leinwand et al 2005). The spread of IAS can be facilitated by the international pet trade, as it is the case for Phelsuma spp.…”

Section: Introductionmentioning

confidence: 99%

Choice of climate data influences current and future global invasion risks for twoPhelsumageckos

Dubos

Fieldsend

Roesch

et al. 2022

Preprint

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Invasion risks may be influenced either negatively or positively by climate change, depending on the species. These can be predicted with species distribution models, but projections can be strongly affected by input environmental data (climate data source, Global Circulation Models and Shared Socio-economic Pathways SSP). We modelled the distribution of Phelsuma grandis and P. laticauda, two Malagasy reptiles that are spreading globally. We accounted for drivers of spread and establishment using socio-economic factors (e.g., distance from ports) and two climate data sources, i.e., Climatologies at High Resolution for the Earth's and Land Surface Areas (CHELSA) and Worldclim. We further quantified the degree of agreement in invasion risk models that utilised CHELSA and Worldclim data for current and future conditions. Most areas identified as highly exposed to invasion risks were consistently identified (e.g. in Caribbean and Pacific Islands). However, projected risks differed locally. We also found notable differences in quantitative invasion risk (3% difference in suitability scores for P. laticauda and up to 14% for P. grandis) under current conditions. Despite both species native distributions overlap substantially, climate change will drive opposite responses on invasion risks by 2070 (decrease for P. grandis, increase for P. laticauda). Overall, projections of future invasion risks were the most affected by climate data source, followed by SSP. Our results highlight that assessments of current and future invasion risks are sensitive to the climate data source, especially in Islands. We stress the need to account for multiple climatologies when assessing invasion risks.

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First record of an Asian tongueworm, Raillietiella orientalis (Pentastomida: Raillietiellidae), parasitizing a Tokay Gecko, (Gekko gecko, Squamata: Gekkonidae): a novel interaction between two non-native species in Florida

Cited by 6 publications

References 11 publications

Genotypic and phenotypic evidence indicates the introduction of two distinct forms of a non-native species (Gekko gecko) to Florida, USA

Genotypic and phenotypic evidence indicates the introduction of two distinct forms of a non-native species (Gekko gecko) to Florida, USA

The invasive pentastome Raillietiella orientalis in a banded water snake from the pet trade

Choice of climate data influences current and future global invasion risks for twoPhelsumageckos

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