Direct and indirect effects of a common cyanobacterial toxin on amphibian-trematode dynamics

Buss, Nicholas; Wersebe, Matthew; Hua, Jessica

doi:10.1016/j.chemosphere.2018.12.160

Cited by 8 publications

(5 citation statements)

References 50 publications

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“…The free-living cercarial life stage of trematodes is exposed to the environment of their hosts during transmission, leaving them vulnerable to exposure to environmental contaminants (Pietrock and Marcogliese 2003;Sures et al 2017). Indeed, exposure of trematodes to a wide range of contaminants and toxicants has been shown to induce mortality in these freeliving life stages (Morley et al 2003;Rohr et al 2008a;Hua et al 2016;Sures et al 2017;Buss et al 2019Buss et al , 2020Milotic et al 2019Milotic et al , 2020. In the present study we examined the potential for direct lethal effects of microplastics on cercariae.…”

Section: Discussionmentioning

confidence: 99%

Effects of Polyester Microplastic Fiber Contamination on Amphibian–Trematode Interactions

Buss

Sander

Hua

2021

Enviro Toxic and Chemistry

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Microplastic contamination poses a global threat to aquatic organisms, yet we know little as to how microplastics may indirectly affect organismal health via their influence on species–species interactions (e.g., host–parasite interactions). This is problematic because microplastic‐mediated alterations to host–parasite dynamics could negatively impact individual‐ population‐level health of hosts. Using a larval amphibian (host) and free‐living trematode (parasite) model, we asked whether 1) polyester microplastic fibers influence parasite survival; 2) whether polyester microplastic fiber ingestion by amphibians alters amphibian susceptibility to infection; and 3) whether simultaneous exposure of amphibians and trematodes to polyester microplastic fibers influences infection outcomes. Polyester microplastic fibers did not alter trematode survival, nor did their ingestion by amphibians increase amphibian susceptibility to infection. However, when amphibians and trematodes were exposed simultaneously to the fibers, the infection success of the parasite was reduced. Lastly, we conducted a field survey for microfiber contamination across multiple ponds and found microfibers across each of the sampled ponds. Overall, our results contribute to the limited knowledge surrounding the ecological consequences of microplastic contamination. Environ Toxicol Chem 2022;41:869–879. © 2021 SETAC

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Section: Discussionmentioning

confidence: 99%

Effects of Polyester Microplastic Fiber Contamination on Amphibian–Trematode Interactions

Buss

Sander

Hua

2021

Enviro Toxic and Chemistry

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“…This being said, these interactions are often complex, and do not necessarily represent net harm or benefit to either the parasites or their hosts. For instance, Buss et al (2019) found that higher levels of MC-LR (>50 μg/L) increased cercarial mortality, while sublethal doses did not affect their infectivity. However, low doses also modulated the host-parasite dynamic by making tadpoles significantly more susceptible to cercarial infections.…”

Section: Aquatic Contaminants and Cercariaementioning

confidence: 99%

“…cannabinoids in fish is possible;Malev et al (2020) detected CBD and THC at levels considered "indicative of a potential long-term risk to fish" in the plasma of fish in the Sava River (Croatia) that was many times more than the concentrations of CBD and THC in the river water. Although the specific mechanisms and likelihood of cannabinoid bioaccumulation is currently unknown, it is possible that cercariae could act as cannabinoid carriers if they do sequester it, concentrating cannabinoids in higher trophic levels.Additionally, cannabinoids may affect host animals and how they interact with cercariae.Hosts may become more resistant or susceptible to cercarial infection after exposure to cannabinoids, potentially impacting trematode populations and distributions(Bartoli & Boudouresque, 1997;Koprivnikar & Walker, 2011;Buss et al 2019). Future work may thus also investigate how C. sativa secondary metabolites move in trematode cercariae and their food webs.…”

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confidence: 99%

Investigating the Sublethal Effects of Cannabis sativa on Earthworms and Trematode Cercariae

Williams

2024

Preprint

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Rising demand for Cannabis sativa production and use has resulted in recent rapid widespread legalization and large-scale production. Due to its abundance and variety of unique secondary metabolites, C. sativa cultivation could pose a risk to natural terrestrial and aquatic environments. Currently, its general effects on invertebrate animals are not well studied beyond lethality. Here, I investigated how ingestion of C. sativa plant material affected the growth, mortality, and behaviour of an earthworm species. Earthworms that fed on C. sativa gained less weight and took longer to escape from an external heat stimulus. However, mortality and escape behaviour from an external light stimulus were not affected. I also investigated if exposure to aqueous cannabinoids affected the activity and longevity of free-swimming infectious cercariae of trematode (flatworm) parasites. Neither high nor low concentrations of cannabinoid solutions had any effects. Exposure to C. sativa could thus have some effects on non-target organisms.

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“…For example, by infecting grazers of cyanobacteria, pathogenic or parasitic HBF can lower the grazers' ability to withstand cyanobacterial toxins and lack of nutritional value [87]. Similarly, they can benefit from their hosts becoming immunocompromised due to exposure to HABs [88][89][90]. HBF that are decomposers or necrotrophic may capitalize on the mortality caused by HABs (including the subsequent abundance of lysed cyanobacteria arising as the HABs dissipate) and simultaneously benefit toxic cyanobacteria by renewing the availability of nutrients that promote cyanobacterial growth and reproduction [91,92].…”

Section: Protection and Promotionmentioning

confidence: 99%

Incorporating Microbial Species Interaction in Management of Freshwater Toxic Cyanobacteria: A Systems Science Challenge

Banerji

Benesh

2022

Ecologies

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Water resources are critically important, but also pose risks of exposure to toxic and pathogenic microbes. Increasingly, a concern is toxic cyanobacteria, which have been linked to the death and disease of humans, domesticated animals, and wildlife in freshwater systems worldwide. Management approaches successful at reducing cyanobacterial abundance and toxin production have tended to be short-term solutions applied on small scales (e.g., algaecide application) or solutions that entail difficult multifaceted investments (e.g., modification of landscape and land use to reduce nutrient inputs). However, implementation of these approaches can be undermined by microbial species interactions that (a) provide toxic cyanobacteria with protection against the method of control or (b) permit toxic cyanobacteria to be replaced by other significant microbial threats. Understanding these interactions is necessary to avoid such scenarios and can provide a framework for novel strategies to enhance freshwater resource management via systems science (e.g., pairing existing physical and chemical approaches against cyanobacteria with ecological strategies such as manipulation of natural enemies, targeting of facilitators, and reduction of benthic occupancy and recruitment). Here, we review pertinent examples of the interactions and highlight potential applications of what is known.

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Direct and indirect effects of a common cyanobacterial toxin on amphibian-trematode dynamics

Cited by 8 publications

References 50 publications

Effects of Polyester Microplastic Fiber Contamination on Amphibian–Trematode Interactions

Effects of Polyester Microplastic Fiber Contamination on Amphibian–Trematode Interactions

Investigating the Sublethal Effects of Cannabis sativa on Earthworms and Trematode Cercariae

Incorporating Microbial Species Interaction in Management of Freshwater Toxic Cyanobacteria: A Systems Science Challenge

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