Ontogenetic change in the temperature tolerance of larval Bufo marinus (Anura: bufonidae)

Immediate and Persistent Effects of Temperature on Oxygen Consumption and Thermal Tolerance in Embryos and Larvae of the Baja California Chorus Frog, Pseudacris hypochondriaca

“…Thermal tolerance of larval P. hypochondriaca is within the range measured in similar species, but was more responsive to acclimation compared to previous studies. Our CTMax values at an acclimation temperature of 20°C (38–39°C) were similar to Pseudacris triseriata , R. sylvatica , R. temporaria , and Xenopus laevis , but lower than values (41–43°C) observed in Bufo americanus , B. woodhousei , B. marinus , and Gastrophryne carolinenus at the same acclimation temperature (Cupp, 1980; Floyd, 1983; Sherman and Levitis, 2003; Enriquez-Urzelai et al, 2019). Thus, thermal tolerance of P. hypochondriaca larvae tends to match other species that breed during the winter months.…”

Immediate and Persistent Effects of Temperature on Oxygen Consumption and Thermal Tolerance in Embryos and Larvae of the Baja California Chorus Frog, Pseudacris hypochondriaca

“…Thermal tolerance of larval P. hypochondriaca is within the range measured in similar species, but was more responsive to acclimation compared to previous studies. Our CTMax values at an acclimation temperature of 20°C (38–39°C) were similar to Pseudacris triseriata , R. sylvatica , R. temporaria , and Xenopus laevis , but lower than values (41–43°C) observed in Bufo americanus , B. woodhousei , B. marinus , and Gastrophryne carolinenus at the same acclimation temperature (Cupp, 1980; Floyd, 1983; Sherman and Levitis, 2003; Enriquez-Urzelai et al, 2019). Thus, thermal tolerance of P. hypochondriaca larvae tends to match other species that breed during the winter months.…”

“Heat waves” experienced during larval life have species-specific consequences on life-history traits and sexual development in anuran amphibians

“…Temperatures of around 30 °C throughout the entire larval development often resulted in decreased survival in earlier studies (Bellakhal et al 2014, Goldstein et al 2017, Phuge 2017, Lambert et al 2018. Our results suggest that the adverse effect of elevated temperature on larval survival depends on the species and on the timing of exposure, indicating a peak in thermosenitivity during the early stages of larval development (in addition to the increased thermosensitivity of the final larval stages, directly before the onset of metamorphosis (Floyd 1983), which we did not study). This is in line with many previous studies suggesting that the earliest life stages of amphibians are the most susceptible to several stress factors such as chemicals, parasites, poor environmental conditions and pesticides (Ortiz-Santaliestra et al 2006, Holland et al 2007, Crespi and Warne 2013, Mikó et al 2017.…”

Heat hardening as a function of developmental stage in larval and juvenile Bufo americanus and Xenopus laevis

“…However, they were reporting on adult ectotherms. As in fish, OS is difficult to observe reliably in tadpoles (see Cupp, 1980;Sherman, 1980;Menke and Claussen, 1982;Floyd, 1983;Skelly and Freidenburg, 2000). We found that the most consistent endpoint of thermal incapacitation for all stages of tadpoles was an abrupt cessation of movement, even when prodded, and the temperature at which that occurred was designated as the CTMax.…”

Immediate and Persistent Effects of Temperature on Oxygen Consumption and Thermal Tolerance in Embryos and Larvae of the Baja California Chorus Frog, Pseudacris hypochondriaca

“…Thermal tolerance of larval P. hypochondriaca is within the range measured in similar species, but was more responsive to acclimation compared to previous studies. Our CTMax values at an acclimation temperature of 20°C (38–39°C) were similar to Pseudacris triseriata , R. sylvatica , R. temporaria , and Xenopus laevis , but lower than values (41–43°C) observed in Bufo americanus , B. woodhousei , B. marinus , and Gastrophryne carolinenus at the same acclimation temperature (Cupp, 1980; Floyd, 1983; Sherman and Levitis, 2003; Enriquez-Urzelai et al, 2019). Thus, thermal tolerance of P. hypochondriaca larvae tends to match other species that breed during the winter months.…”

“Heat waves” experienced during larval life have species-specific consequences on life-history traits and sexual development in anuran amphibians

“…Temperatures of around 30 °C throughout the entire larval development often resulted in decreased survival in earlier studies (Bellakhal et al 2014, Goldstein et al 2017, Phuge 2017, Lambert et al 2018. Our results suggest that the adverse effect of elevated temperature on larval survival depends on the species and on the timing of exposure, indicating a peak in thermosenitivity during the early stages of larval development (in addition to the increased thermosensitivity of the final larval stages, directly before the onset of metamorphosis (Floyd 1983), which we did not study). This is in line with many previous studies suggesting that the earliest life stages of amphibians are the most susceptible to several stress factors such as chemicals, parasites, poor environmental conditions and pesticides (Ortiz-Santaliestra et al 2006, Holland et al 2007, Crespi and Warne 2013, Mikó et al 2017.…”

Heat hardening as a function of developmental stage in larval and juvenile Bufo americanus and Xenopus laevis

“…However, they were reporting on adult ectotherms. As in fish, OS is difficult to observe reliably in tadpoles (see Cupp, 1980;Sherman, 1980;Menke and Claussen, 1982;Floyd, 1983;Skelly and Freidenburg, 2000). We found that the most consistent endpoint of thermal incapacitation for all stages of tadpoles was an abrupt cessation of movement, even when prodded, and the temperature at which that occurred was designated as the CTMax.…”

Immediate and Persistent Effects of Temperature on Oxygen Consumption and Thermal Tolerance in Embryos and Larvae of the Baja California Chorus Frog, Pseudacris hypochondriaca

“…Thermal tolerance of larval P. hypochondriaca is within the range measured in similar species, but was more responsive to acclimation compared to previous studies. Our CTMax values at an acclimation temperature of 20°C (38–39°C) were similar to Pseudacris triseriata , R. sylvatica , R. temporaria , and Xenopus laevis , but lower than values (41–43°C) observed in Bufo americanus , B. woodhousei , B. marinus , and Gastrophryne carolinenus at the same acclimation temperature (Cupp, 1980; Floyd, 1983; Sherman and Levitis, 2003; Enriquez-Urzelai et al, 2019). Thus, thermal tolerance of P. hypochondriaca larvae tends to match other species that breed during the winter months.…”

“Heat waves” experienced during larval life have species-specific consequences on life-history traits and sexual development in anuran amphibians

“…Temperatures of around 30 °C throughout the entire larval development often resulted in decreased survival in earlier studies (Bellakhal et al 2014, Goldstein et al 2017, Phuge 2017, Lambert et al 2018. Our results suggest that the adverse effect of elevated temperature on larval survival depends on the species and on the timing of exposure, indicating a peak in thermosenitivity during the early stages of larval development (in addition to the increased thermosensitivity of the final larval stages, directly before the onset of metamorphosis (Floyd 1983), which we did not study). This is in line with many previous studies suggesting that the earliest life stages of amphibians are the most susceptible to several stress factors such as chemicals, parasites, poor environmental conditions and pesticides (Ortiz-Santaliestra et al 2006, Holland et al 2007, Crespi and Warne 2013, Mikó et al 2017.…”

Heat hardening as a function of developmental stage in larval and juvenile Bufo americanus and Xenopus laevis

“…However, they were reporting on adult ectotherms. As in fish, OS is difficult to observe reliably in tadpoles (see Cupp, 1980;Sherman, 1980;Menke and Claussen, 1982;Floyd, 1983;Skelly and Freidenburg, 2000). We found that the most consistent endpoint of thermal incapacitation for all stages of tadpoles was an abrupt cessation of movement, even when prodded, and the temperature at which that occurred was designated as the CTMax.…”