The effects of temperature and salinity on the longevity of <i>Opisthorchis viverrini</i> cercariae: a climate change concern

Prasopdee, Sattrachai; Kulsantiwong, Jutharat; Sathavornmanee, Thanakrit; Thitapakorn, Veerachai

doi:10.1017/s0022149x20000498

Cited by 6 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the time points of 4, 8, 12, and 24 hours would have the greatest biological relevance. Some cercariae can survive for more than 24 hours, but viability decreases considerably after this point [ 38 – 40 ]. The graphical abstract provides an overview of the experimental design and data collection.…”

Section: Methodsmentioning

confidence: 99%

Opportunity or catastrophe? effect of sea salt on host-parasite survival and reproduction

Vannatta

Gutierrez

et al. 2022

PLoS Negl Trop Dis

View full text Add to dashboard Cite

Seawater intrusion associated with decreasing groundwater levels and rising seawater levels may affect freshwater species and their parasites. While brackish water certainly impacts freshwater systems globally, its impact on disease transmission is largely unknown. This study examined the effect of artificial seawater on host-parasite interactions using a freshwater snail host, Biomphalaria alexandrina, and the human trematode parasite Schistosoma mansoni. To evaluate the impact of increasing salinity on disease transmission four variables were analyzed: snail survival, snail reproduction, infection prevalence, and the survival of the parasite infective stage (cercariae). We found a decrease in snail survival, snail egg mass production, and snail infection prevalence as salinity increases. However, cercarial survival peaked at an intermediate salinity value. Our results suggest that seawater intrusion into freshwaters has the potential to decrease schistosome transmission to humans.

show abstract

Section: Methodsmentioning

confidence: 99%

Opportunity or catastrophe? effect of sea salt on host-parasite survival and reproduction

Vannatta

Gutierrez

et al. 2022

PLoS Negl Trop Dis

View full text Add to dashboard Cite

show abstract

“…This would lead to changes in habitat productivity and in the geographical distribution of species. The effect of environmental factors influenced by climate change on parasite infectivity is gaining increasing attention in the last years (Holt & Boulinier, 2006; Lafferty & Kuris, 2006; Poulin, 2006; Williams, 2019; Prasopdee et al ., 2020). Our study is within the framework of this approach, suggesting that increasing temperatures interacting with pH and time may reduce the infective capacity of C .…”

Section: Discussionmentioning

confidence: 99%

Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)

2021

View full text Add to dashboard Cite

The different stages of the life cycle of parasites are important components of ecosystems. Changes in environmental conditions may affect free-living stages, host–parasite interactions and ecosystem functioning. The larvae of Chordodes nobilii, which belongs to the parasitic phylum Nematomorpha, are susceptible to extreme temperatures and different pollutants, but the effects of pH and moderate temperature variations have not been evaluated yet. Our objective was to assess the effect of temperature, pH and their interaction on the infectivity of C. nobilii larvae to Aedes aegypti larvae over time. Larvae were treated with factorial combinations of temperature (18, 23 and 28°C), pH (7, 8 and 9) and time periods (24 and 48 h). Results show a highly significant interaction among all variables. The highest infectivity was recorded at 18°C and pH 7 at 24 and 48 h, and the lowest one at 28°C and pH 8 at 24 and 48 h. Infectivity differed significantly among the three temperatures only at pH 8 and 48 h, decreasing with increasing temperature. Our study is the first report of the effect of pH on a Nematomorpha species and suggests that the infectivity of C. nobilii larvae may be affected negatively by an increase in temperature and its interaction with pH and time. Since parasites must be considered for a better understanding of the effects of stressors on freshwater ecosystems, our results may help in the design and analysis of studies of anthropogenic impact.

show abstract

A Spatially Explicit Model of the Dynamics of Opisthorchis viverrini Spread

Trevisin,

Kamber,

Mari

et al. 2024

Ecohydrology

View full text Add to dashboard Cite

Opisthorchis viverrini is a water‐based disease‐causing parasite whose public health implications are relevant in Southeast Asia. Untreated or chronic infections often lead to severe hepatobiliary morbidity including cholangiocarcinoma, a lethal bile duct cancer. The liver fluke O. viverrini can be contracted by consumption of raw fish, after which it settles in the small biliary ducts. The life cycle involves, besides freshwater snails in which asexual reproduction takes place, freshwater cyprinid fish as intermediate hosts. Piscivorous mammals, including humans, dogs and cats, are definitive hosts. Here, we propose a spatially explicit model for the transmission dynamics in realistic freshwater environments. Our model generalises existing local‐scale models by assimilating novel spreading mechanisms in space and time. Our study emphasises that spatial connectivity is key to shaping patterns of disease spread. Fish distribution and mobility through river corridors affect disease transmission routes. Our study provides baseline information on the role of connected freshwater bodies and their suitability for intermediate and final hosts. The distributions of fish catch and fish market supplies are also considered because they affect the spatiotemporal spread of opisthorchiasis. Adding a spatial component to transmission models fundamentally changes the description of epidemiological dynamics and the related scenarios of disease propagation through an improved description of the ecology of hosts, parasites and their transmission cycles. This work provides a more realistic description of the environment where infection cycles develop and spread than previous modelling attempts did, thus allowing a better characterisation of transmission routes and enabling a proper design of containment measures.

show abstract

The effects of temperature and salinity on the longevity of Opisthorchis viverrini cercariae: a climate change concern

Cited by 6 publications

References 32 publications

Opportunity or catastrophe? effect of sea salt on host-parasite survival and reproduction

Opportunity or catastrophe? effect of sea salt on host-parasite survival and reproduction

Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)

A Spatially Explicit Model of the Dynamics of Opisthorchis viverrini Spread

Contact Info

Product

Resources

About