Urbanization impacts parasite diversity in the cane toad Rhinella horribilis (Anura: Bufonidae)

Jacinto-Maldonado, Mónica; Peña, G.E. García; Lesbarrères, David; Meza-Figueroa, Diana; Robles-Morúa, A.; Salgado‐Maldonado, Guillermo; Suzán, Gerardo

doi:10.1016/j.gecco.2022.e02275

Cited by 3 publications

(3 citation statements)

References 74 publications

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“…Field studies in other regions of the world and experiments involving sequential exposure to Pr and Rv would be useful next steps in resolving these relationships. Co‐infections in amphibian hosts are common in our data set and other systems (Galt et al, 2021; Landsberg et al, 2013; Love et al, 2016), and environmental conditions can exacerbate them (Jacinto‐Maldonado et al, 2022). Understanding the importance of direct and indirect pathogen interactions for host outcomes is thus essential in mitigating amphibian losses from infectious diseases.…”

Section: Discussionmentioning

confidence: 80%

“…Experimental evidence does support the facilitation of Rv infections by nematode infections (Ramsay & Rohr, 2021); however, Rv intensity decreased following trematode co-infection (Wuerthner et al, 2017). | 1865 Love et al, 2016), and environmental conditions can exacerbate them (Jacinto-Maldonado et al, 2022). Understanding the importance of direct and indirect pathogen interactions for host outcomes is thus essential in mitigating amphibian losses from infectious diseases.…”

Section: Discussionmentioning

confidence: 99%

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Widespread amphibian Perkinsea infections associated with Ranidae hosts, cooler months and Ranavirus co‐infection

Atkinson

Savage

2023

Journal of Animal Ecology

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Amphibians suffer from large‐scale population declines globally, and emerging infectious diseases contribute heavily to these declines. Amphibian Perkinsea (Pr) is a worldwide anuran pathogen associated with mass mortality events, yet little is known about its epidemiological patterns, especially in comparison to the body of literature on amphibian chytridiomycosis and ranavirosis. Here, we establish Pr infection patterns in natural anuran populations and identify important covariates including climate, host attributes and co‐infection with Ranavirus (Rv). We used quantitative (q)PCR to determine the presence and intensity of Pr and Rv across 1234 individuals sampled throughout central Florida in 2017–2019. We then implemented random forest ensemble learning models to predict infection with both pathogens based on physiological and environmental characteristics. Perkinsea infected 32% of all sampled anurans, and Pr prevalence was significantly elevated in Ranidae frogs, cooler months, metamorphosed individuals and frogs co‐infected with Rv, while Pr intensity was significantly higher in ranid frogs and individuals collected dead. Ranavirus prevalence was 17% overall and was significantly higher in Ranidae frogs, metamorphosed individuals, locations with higher average temperatures, and individuals co‐infected with Pr. Perkinsea prevalence was significantly higher than Rv prevalence across months, regions, life stages and species. Among locations, Pr prevalence was negatively associated with crayfish prevalence and positively associated with relative abundance of microhylids, but Rv prevalence did not associate with any tested co‐variates. Co‐infections were significantly more common than single infections for both pathogens, and we propose that Pr infections may propel Rv infections because seasonal Rv infection peaks followed Pr infection peaks and random forest models found Pr intensity was a leading factor explaining Rv infections. Our study elucidates epidemiological patterns of Pr in Florida and suggests that Pr may be under‐recognized as a cause of anuran declines, especially in the context of pathogen co‐infection.

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Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Widespread amphibian Perkinsea infections associated with Ranidae hosts, cooler months and Ranavirus co‐infection

Atkinson

Savage

2023

Journal of Animal Ecology

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“…The impact of environmental changes on the spatial dynamics of mosquitoes is not only specific to Anopheles species but has also been observed in mosquitoes of the Aedes genus (Albrieu Llinás et al, 2018;Zettle et al, 2022). This modification of spatial distribution could modulate their trophic behavior and influence the occurrence of the plasmodial species they host as recently described for arboviruses (Li et al, 2013;Kolimenakis et al, 2021) and helminths in the giant toad Rhinella horribilis (Jacinto-Maldonado et al, 2022).…”

Section: Urbanization Influences On Culicidae Composition In Nyangamentioning

confidence: 85%

A cross-sectional study of malaria transmission in suggests the existence of a potential bridge vector susceptible of ensuring the transfer of simian malaria parasites to humans

Longo-Pendy,

Boundenga,

Makanga

et al. 2023

Front. Ecol. Evol.

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IntroductionDespite all the efforts made to control or even eliminate malaria, the disease continues to claim the highest number of victims of vector-borne pathogens in the world and Sub-Saharan countries bear the heaviest burden. The lack of knowledge of the role of various protagonists involved in the transmission of this parasitic disease, such as mosquito vectors and the plasmodial species they transmit as well as the host species they infect in a locality, constitutes one of the main causes of the persistence of malaria. In Gabon, in several areas, entomological data on malaria transmission remain poorly known. Thus, this study aimed to determine the diversity of Anopheles involved in malaria transmission in different environments of the province of Nyanga in southwest Gabon.MethodsFor this, an entomological study was carried out in the four main localities of the province of Nyanga to provide answers to these shortcomings. Mosquitoes were collected over several nights using the human landing catch method. The identification of Anopheles and malaria parasites circulating in the different sites was achieved by combining morphological and molecular analysis tools.ResultsA total of five hundred and ninety-one (591) mosquitoes belonging to the Culicidae family were collected. From this collection of adult mosquitoes, nine species of Anopheles mosquitoes notably species of the Anopheles nili complex (53.46%) followed by those of Anopheles gambiae complex (22.01%), Anopheles funestus group (18.24%), Anopheles moucheti complex (5.66%) and Anopheles hancocki (0.63%). Approximately 18 percent of these Anopheles species were infected with Plasmodium spp. Anopheles funestus, known to be involved in malaria transmission to humans, and An. moucheti-like, recently discovered in Gabon, and whose status in Plasmodium transmission is not yet elucidated, were found to be infected with great ape Plasmodium.DiscussionOur results raise the question of the potential switch of simian malaria parasites to humans. If these observations are confirmed in the future, and the infective capacity of the bridge vectors is demonstrated, this new situation could ultimately constitute an obstacle to progress in the fight against malaria.

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Water snakes have a high diversity of parasites in anthropized environments

Oliveira,

Ferreira-Silva,

Silva

et al. 2024

Urban Ecosyst

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Urbanization impacts parasite diversity in the cane toad Rhinella horribilis (Anura: Bufonidae)

Cited by 3 publications

References 74 publications

Widespread amphibian Perkinsea infections associated with Ranidae hosts, cooler months and Ranavirus co‐infection

Widespread amphibian Perkinsea infections associated with Ranidae hosts, cooler months and Ranavirus co‐infection

A cross-sectional study of malaria transmission in suggests the existence of a potential bridge vector susceptible of ensuring the transfer of simian malaria parasites to humans

Water snakes have a high diversity of parasites in anthropized environments

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