Effects of Agricultural Stressors on Growth and an Immune Status Indicator in Wood Frog (<i>Lithobates sylvaticus</i>) Tadpoles and Metamorphs

Ruso, Gabrielle E.; Hogan, Natacha S.; Sheedy, Claudia; Gallant, Melanie J.; Jardine, Timothy D.

doi:10.1002/etc.5107

Cited by 6 publications

(3 citation statements)

References 79 publications

(153 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ranavirus-infected tadpoles were identified in over 25.6% of the surveyed locations, and the average individual infection rate in the infected area was as high as 50% depending on the species. Amphibian larvae often have a higher rate of ranavirus infection than adults [ 37 ] due to factors such as immunologically vulnerable metamorphosis and high population density [ 38 , 39 ]. To date, although ranavirus infection in larval D. japonicus has been confirmed in agricultural areas [ 19 ], there has been no report of mass die-offs of either larval or adult D. japonicus or P. nigromaculatus in South Korea.…”

Section: Discussionmentioning

confidence: 99%

“…Our results imply that anuran tadpoles can be infected by ranavirus regardless of the specific developmental stage and that ranavirus-caused mass die-offs can occur whenever environmental triggers form suitable conditions for an outbreak. In the paddy fields in which rice is cultivated, water flooding and draining are repeated to help the successful growth of rice, and this cycle greatly affects amphibian activities [ 39 , 53 ]. Often, several thousand dead tadpoles at various developmental stages are found in small hollow patches in water-drained rice paddies in summer [ 54 ].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Prevalence of Ranavirus Infection in Three Anuran Species across South Korea

Roh

Park

Kim

et al. 2022

Viruses

View full text Add to dashboard Cite

To cope with amphibian die-offs caused by ranavirus, it is important to know the underlying ranavirus prevalence in a region. We studied the ranavirus prevalence in tadpoles of two native and one introduced anuran species inhabiting agricultural and surrounding areas at 49 locations across eight provinces of South Korea by applying qPCR. The local ranavirus prevalence and the individual infection rates at infected locations were 32.6% and 16.1%, respectively, for Dryophytes japonicus (Japanese tree frog); 25.6% and 26.1% for Pelophylax nigromaculatus (Black-spotted pond frog); and 30.5% and 50.0% for Lithobates catesbeianus (American bullfrog). The individual infection rate of L. catesbeianus was significantly greater than that of D. japonicus. The individual infection rate of P. nigromaculatus was related to the site-specific precipitation and air temperature. The individual infection rate gradually increased from Gosner development stage 39, and intermittent infection was confirmed in the early and middle developmental stages. Our results show that ranavirus is widespread among wild amphibians living in agricultural areas of South Korea, and mass die-offs by ranavirus could occur at any time.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Prevalence of Ranavirus Infection in Three Anuran Species across South Korea

Roh

Park

Kim

et al. 2022

Viruses

View full text Add to dashboard Cite

show abstract

“…Changes in neutrophils and lymphocytes are often proportional with increased glucocorticoid levels, indicating physiological stress; however, neonicotinoid exposure altered leukocyte profiles relative to neutrophils or eosinophils but did not affect CORT levels in northern leopard frogs (Gavel et al, 2021). Neutrophil to lymphocyte ratios were also a good indication of environmental stressors and were associated with total dissolved solid levels in aquatic habitats that impacted growth and development (Ruso et al, 2021). Combinations of physiological indices are also informative to link endpoints with individual condition (e.g., Park et al, 2021).…”

Section: Sampling Strategiesmentioning

confidence: 99%

Framework for multi-stressor physiological response evaluation in amphibian risk assessment and conservation

Awkerman,

Glinski,

Henderson

et al. 2024

Front. Ecol. Evol.

View full text Add to dashboard Cite

Controlled laboratory experiments are often performed on amphibians to establish causality between stressor presence and an adverse outcome. However, in the field, identification of lab-generated biomarkers from single stressors and the interactions of multiple impacts are difficult to discern in an ecological context. The ubiquity of some pesticides and anthropogenic contaminants results in potentially cryptic sublethal effects or synergistic effects among multiple stressors. Although biochemical pathways regulating physiological responses to toxic stressors are often well-conserved among vertebrates, different exposure regimes and life stage vulnerabilities can yield variable ecological risk among species. Here we examine stress-related biomarkers, highlight endpoints commonly linked to apical effects, and discuss differences in ontogeny and ecology that could limit interpretation of biomarkers across species. Further we identify promising field-based physiological measures indicative of potential impacts to health and development of amphibians that could be useful to anuran conservation. We outline the physiological responses to common stressors in the context of altered functional pathways, presenting useful stage-specific endpoints for anuran species, and discussing multi-stressor vulnerability in the larger framework of amphibian life history and ecology. This overview identifies points of physiological, ecological, and demographic vulnerability to provide context in evaluating the multiple stressors impacting amphibian populations worldwide for strategic conservation planning.

show abstract

Warmer temperature overrides the effects of antidepressants on amphibian metamorphosis and behavior

Fong,

Doganoglu,

Sandt

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

Effects of Agricultural Stressors on Growth and an Immune Status Indicator in Wood Frog (Lithobates sylvaticus) Tadpoles and Metamorphs

Abstract: Impacts of agricultural land use on wood frog tadpoles Effects of agricultural stressors on growth and an immune status indicator in wood frog (Lithobates sylvaticus) tadpoles and metamorphs

Cited by 6 publications

References 79 publications

Prevalence of Ranavirus Infection in Three Anuran Species across South Korea

Prevalence of Ranavirus Infection in Three Anuran Species across South Korea

Framework for multi-stressor physiological response evaluation in amphibian risk assessment and conservation

Warmer temperature overrides the effects of antidepressants on amphibian metamorphosis and behavior

Contact Info

Product

Resources

About