Hormones and Reproductive Cycles in Anuran Amphibians

Rastogi, Rakesh K.; Pinelli, Claudia; Polese, Gianluca; D’Aniello, Biagio; Chieffi-Baccari, Gabriella

doi:10.1016/b978-0-12-374932-1.00022-6

Cited by 6 publications

(5 citation statements)

References 75 publications

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“…Most anurans follow discrete annual reproductive cycles in which reproductive activity is accompanied by acoustic communication (Rastogi et al, 2011). Over a period of days to months, female anurans undergo follicular development, navigate to breeding sites, approach potential mates using conspecific acoustic signals, and oviposit eggs during amplexus with a male (Wells, 1977(Wells, , 2010.…”

Section: Indicators Of Breeding Site Suitabilitymentioning

confidence: 99%

Anuran call properties as reliable indicators of environmental suitability for reproduction

Pekny,

Todd,

Post

2024

Preprint

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The annual onset of breeding activity by animals in seasonal environments is often accompanied by auditory signals such as stridulations in insects and vocalizations in birds, mammals, and anurans. In ectotherms, the seasonal timing of such activity by males signals to females the general favorability of environmental conditions for reproduction. Complementary to this, the acoustic characteristics of male auditory signals are presumed to indicate, primarily, the status or quality of males as mates or territorial competitors. Here, using male anurans as a case study, we present the novel hypothesis that characteristics of auditory signals that are modulated by temperature may also serve as bioclimatic indicators of the suitability of proximal abiotic conditions for reproduction by females. According to this hypothesis, thermal constraints on characteristics such as call rate and duration that are insuperable by males may imbue their calls with features that facilitate tracking of environmental conditions by females independently of information intended for communication by males. We integrate findings from empirical studies spanning multiple fields of ecology and evolution to demonstrate how temporal variation in call properties may directly influence female reproductive behavior and physiology. Finally, we outline how this proposed mechanism may enable environmental tracking, provide guidelines for future research to experimentally test this hypothesis, and discuss how findings from this research can translate into actionable conservation management for species of concern.

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Section: Indicators Of Breeding Site Suitabilitymentioning

confidence: 99%

Anuran call properties as reliable indicators of environmental suitability for reproduction

Pekny,

Todd,

Post

2024

Preprint

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“…Besides, microbiological contents of wastewater largely raise the levels of waterborne pathogens (Pandey et al, 2015). In addition, pesticide pollution runoff is also added to the complex environmental scenario due to the extensive production of genetically modified crops (Rastogi et al, 2011). Some investigations reported several pesticide residues with potential ecotoxicological effects on amphibians in this region, mainly in the aquatic environments of Santa Fe Province (Demonte et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

High toxicity of agro‐industrial wastewater on aquatic fauna of a South American stream: Mortality of aquatic turtles and amphibian tadpoles as bioindicators of environmental health

Cuzziol Boccioni,

Peltzer,

Attademo

et al. 2024

Water Environment Research

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The aim of this study was to characterize an aquatic system of Santa Fe province (Argentina) receiving wastewater from agro‐industrial activities (mainly dairy) by in situ assessment (fauna mortality, physicochemical, microbiological, and pesticide residues measurement), and ecotoxicity bioassays on amphibian tadpoles. Water and sediment samples were obtained from the Los Troncos Stream (LTS), previous to the confluence with the “San Carlos” drainage channel (SCC), and from the SCC. Biological parameters (mortality and sublethal biomarkers) were used to evaluate ecotoxicity during 10‐day exposure of Rhinella arenarum tadpoles to LTS and SCC samples. Nine pesticides were detected in both LTS and SCC. Chemical and biochemical oxygen demand, ammonia, and coliform count recorded in SCC greatly exceeded limits for aquatic life protection. At SCC and LTS after the confluence with SCC, numerous dying and dead aquatic turtles (Phrynops hilarii) were recorded. In the ecotoxicity assessment, no mortality of tadpoles was observed in LTS treatment, whereas total mortality (100%) was observed in SCC treatments in dilution higher than 50% of water and sediment. For SCC, median lethal concentration and the 95% confidence limits was 18.30% (14.71–22.77) at 24 h; lowest‐observed and no‐observed effect concentrations were 12.5% and 6.25%, respectively. Oxidative stress and neurotoxicity were observed in tadpoles exposed to 25% SCC dilution treatment. In addition, there was a large genotoxic effect (micronuclei test) in all sublethal SCC dilution treatments (6.25%, 12.5%, and 25%). These results alert about the high environmental quality deterioration and high ecotoxicity for aquatic fauna of aquatic ecosystems affected by agro‐industrial wastewater.Practitioner points Great mortality of turtles was observed in a basin with a high load of agro‐industrial wastewater. San Carlos Channel (SCC), where effluents are spilled, is environmentally deteriorated. The water‐sediment matrix of SCC caused 100% lethality in tadpoles. SCC dilutions caused neurotoxicity, oxidative stress, and genotoxicity on tadpoles.

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“…Interactions among pesticides, metals, and physical–chemical stressors are relevant in this context, as the use of pesticide tends to be more intense while intensive production increases (Rider et al, 2014). In general, metals and pesticide pollution runoff occur during spring and summer, which coincides with the reproductive periods of most amphibian species (Lajmanovich et al, 2010; Rastogi et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Water and sediment quality of an agro‐industrial area through different approaches: Physicochemical parameters and ecotoxicity with amphibians

Peluso

Aronzon

Chehda

et al. 2023

Water Environment Research

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Amphibians are subject to several stressors in the aquatic and terrestrial environments, and human activities have profoundly impacted this vertebrate group. The aim of the present study was to analyze physicochemical parameters, metals and pesticide residues, and the toxicity of water and sediment samples from an environment with high agricultural activity (S1: Salto stream; S2: drainage channel downstream from S1) by means of bioassays using Rhinella arenarum (Amphibia: Anura) larvae. Metals and pesticides were analyzed in water and sediment samples by fluorescence spectrometer of X‐ray by total reflection and ultra‐high‐performance liquid chromatography‐MS/MS, respectively. For lethality bioassays, 10 larvae (in triplicate) were exposed for 504 h to water and sediment samples. Also, 50 larvae were exposed for 96 h (in triplicate) to water and sediment samples for the evaluation of biomarkers of neurotoxicity, oxidative stress, and genotoxicity. Twenty‐six different pesticides (mainly herbicides) were detected in both sites, and Cu, Zn, and Pb exceeded the limit for protection of aquatic life. Lethality was observed in larvae exposed to water and sediment samples from both sites at chronic exposure. Oxidative stress was observed in larvae exposed to both sites. In larvae exposed to samples from S1, alterations in the neurotoxicity biomarkers were observed. These results alert about the degradation of the sites and highlight the need to monitor and control the use of pesticides. Practitioner Points Twenty‐six pesticides were detected in water and sediment from Salto stream basin. Significant mortality was observed in larvae exposed to samples from all sites. Sublethal effects were observed mainly in larvae exposed to samples from Salto stream. The degraded quality can be associated with the agricultural activities of the area.

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Hormones and Reproductive Cycles in Anuran Amphibians

Cited by 6 publications

References 75 publications

Anuran call properties as reliable indicators of environmental suitability for reproduction

Anuran call properties as reliable indicators of environmental suitability for reproduction

High toxicity of agro‐industrial wastewater on aquatic fauna of a South American stream: Mortality of aquatic turtles and amphibian tadpoles as bioindicators of environmental health

Water and sediment quality of an agro‐industrial area through different approaches: Physicochemical parameters and ecotoxicity with amphibians

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