An introduced pentastomid parasite (<i>Raillietiella frenata</i>) infects native cane toads (<i>Rhinella marina</i>) in Panama

Kelehear, Crystal; Saltonstall, Kristin; Torchin, Mark E.

doi:10.1017/s0031182014001759

Cited by 9 publications

(6 citation statements)

References 33 publications

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“…One of the primary reasons for the invasive success of R. ocellatus may be its capacity to exploit a wide variety of mussel species and populations as hosts, coupled with the fitness advantage demonstrated here in using naive host populations due to their lower egg ejection rates (Reichard et al 2010). Given that several successful parasite invasions have been attributed to the use of naive hosts species owing to the absence of an effective adaptive response (Kelehear et al 2015), R. ocellatus is predicted to successfully reproduce and establish non-native populations in other geographic regions.…”

Section: Discussionmentioning

confidence: 93%

Avoidance of host resistance in the oviposition-site preferences of rose bitterling

et al. 2017

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A contemporary outcome of dynamic host-parasite coevolution can be driven by the 23 adaptation of a parasite to exploit its hosts at the population and species levels (parasite 24 specialisation) or by local host adaptations leading to greater host resistance to sympatric parasite 25 populations (host resistance). We tested the predominance of these two scenarios using cross- 26infection experiments with two geographically distant populations of the rose bitterling, Rhodeus 27 ocellatus, a fish brood parasite of freshwater mussels, and four populations of their mussel hosts 28 (two Anodonta woodiana and two Unio douglasiae populations) with varying degrees of 29 geographic sympatry and local coexistence. Our data support predictions for host resistance at 30 the species level but no effect of local coexistence between specific populations. Rhodeus

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Section: Discussionmentioning

confidence: 93%

Avoidance of host resistance in the oviposition-site preferences of rose bitterling

et al. 2017

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“…The appearance of a new species in an ecosystem greatly impacts local diversity as already well described with the introduction of the pathogen Bd in frogs worldwide ( Borzee et al, 2017 ) nonetheless, other animals such as geckos can bring different varieties of pathogenic bacteria ( Gugnani et al, 1986 ) or parasites to the regions where they are introduced ( Kelehear et al, 2015 ). Usually these risks are not well measured because the introductions are not controlled or monitored; therefore, next-generation sequencing tools take a special importance in the prevention of introduction of pathogens.…”

Section: Discussionmentioning

confidence: 99%

“…When introducing an exotic species, either accidentally or intentionally, the potential pathogens that can be loaded are generally not analyzed, because molecular microbiological essays are never performed. It has been documented that the cane toad can carry Salmonella species that can affect other native species ( Burrowes et al, 2004 ), and pathogen transmission between the cane toad and other species has even been documented in Panamá ( Kelehear et al, 2015 ). These pathogens can be a severe problem to local fauna since invasive species are difficult to control and eliminate.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Skin Microbiota of the Cane Toad Rhinella cf. marina in Puerto Rico and Costa Rica

et al. 2018

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Rhinella marina is a toad native to South America that has been introduced in the Antilles, likely carrying high loads of microorganisms, potentially impacting local community diversity. The amphibian skin is involved in pathogen defense and its microbiota has been relatively well studied, however, research focusing on the cane toad microbiota is lacking. We hypothesize that the skin microbial communities will differ between toads inhabiting different geographical regions in Central America and the Caribbean. To test our hypothesis, we compared the microbiota of three populations of R. cf. marina toads, two from Costa Rican (native) and one Puerto Rican (exotic) locations. In Costa Rica, we collected 11 toads, 7 in Sarapiquí and 4 from Turrialba while in Puerto Rico, 10 animals were collected in Santa Ana. Separate swab samples were collected from the dorsal and ventral sites resulting in 42 samples. We found significant differences in the structure of the microbial communities between Puerto Rico and Costa Rica. We detected as much as 35 different phyla; however, communities were dominated by Proteobacteria, Bacteroidetes, Firmicutes, and Actinobacteria. Alpha diversity and richness were significantly higher in toads from Puerto Rico and betadiversity revealed significant differences between the microbiota samples from the two countries. At the genus level, we found in Santa Ana, Puerto Rico, a high dominance of Kokuria , Niabella , and Rhodobacteraceae, while in Costa Rica we found Halomonas and Pseudomonas in Sarapiquí, and Acinetobacter and Citrobacter in Turrialba. This is the first report of Niabella associated with the amphibian skin. The core microbiome represented 128 Operational Taxonomic Units (OTUs) mainly from five genera shared among all samples, which may represent the symbiotic Rhinella ’s skin. These results provide insights into the habitat-induced microbial changes facing this amphibian species. The differences in the microbial diversity in Puerto Rican toads compared to those in Costa Rica provide additional evidence of the geographically induced patterns in the amphibian skin microbiome, and highlight the importance of discussing the microbial tradeoffs in the colonization of new ecosystems.

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“…The lack of evidence of host switching was unexpected because elsewhere in their introduced range, there are records of H. frenatus hosting Geckobia mites that are not present in their native range (Heath and Whitaker, 2015). It was particularly unexpected given the relative abundance of H. frenatus – spillover from invasive to native species is predicted to be more common in areas where invasive hosts are higher density than native species (Kelehear et al 2014 b ).…”

Section: Discussionmentioning

confidence: 99%

“…Waddycephalus are endoparasitic pentastomes that have been detected in many Australian snakes (definitive hosts) and lizards (one of the intermediate hosts) (Riley and Self, 1981;Riley et al 1985;Barton, 2007;Paré, 2008;Kelehear et al 2014b). Most species are described from Australia but the genus is also present in South-east Asia and Fiji (Riley and Self, 1981).…”

Section: Introductionmentioning

confidence: 99%

The impact of parasites during range expansion of an invasive gecko

et al. 2018

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Host-parasite dynamics can play a fundamental role in both the establishment success of invasive species and their impact on native wildlife. The net impact of parasites depends on their capacity to switch effectively between native and invasive hosts. Here we explore host-switching, spatial patterns and simple fitness measures in a slow-expanding invasion: the invasion of Asian house geckos (Hemidactylus frenatus) from urban areas into bushland in Northeast Australia. In bushland close to urban edges, H. frenatus co-occurs with, and at many sites now greatly out-numbers, native geckos. We measured prevalence and intensity of Geckobia mites (introduced with H. frenatus), and Waddycephalus (a native pentastome). We recorded a new invasive mite species, and several new host associations for native mites and geckos, but we found no evidence of mite transmission between native and invasive geckos. In contrast, native Waddycephalus nymphs were commonly present in H. frenatus, demonstrating this parasite's capacity to utilize H. frenatus as a novel host. Prevalence of mites on H. frenatus decreased with distance from the urban edge, suggesting parasite release towards the invasion front; however, we found no evidence that mites affect H. frenatus body condition or lifespan. Waddycephalus was present at low prevalence in bushland sites and, although its presence did not affect host body condition, our data suggest that it may reduce host survival. The high relative density of H. frenatus at our sites, and their capacity to harbour Waddycephalus, suggests that there may be impacts on native geckos and snakes through parasite spillback.

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An introduced pentastomid parasite (Raillietiella frenata) infects native cane toads (Rhinella marina) in Panama

Cited by 9 publications

References 33 publications

Avoidance of host resistance in the oviposition-site preferences of rose bitterling

Avoidance of host resistance in the oviposition-site preferences of rose bitterling

Characterization of the Skin Microbiota of the Cane Toad Rhinella cf. marina in Puerto Rico and Costa Rica

The impact of parasites during range expansion of an invasive gecko

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