Environmental and genetic influences on the thermal physiology of Rana sylvatica

Manis, Mara L.; Claussen, Dennis L.

doi:10.1016/0306-4565(86)90014-8

Cited by 27 publications

(6 citation statements)

References 19 publications

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“…Wood frogs are freeze tolerant (Costanzo & Lee, ; Storey & Storey, ) though extended or extreme periods of freezing temperatures can impact overwintering survival (Costanzo, Lee, & Wright, ; O'Connor & Rittenhouse, ). In a portion of the range that encompassed our study areas, no differentiation in wood frog thermal tolerance was found (Manis & Claussen, ); however, far northern populations in Alaska have shown increased cold tolerance (Larson et al., ). However, mild winters in colder areas may result in freeze‐thaw cycles that rouse animals from torpor, resulting in increased energetic demands (Storey, ), mating behavior impairment (Costanzo, Irwin, & Lee, ), and reduced fecundity (Benard, ).…”

Section: Discussionmentioning

confidence: 89%

Range position and climate sensitivity: The structure of among‐population demographic responses to climatic variation

Amburgey

Miller

Grant³

et al. 2017

Global Change Biology

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Species' distributions will respond to climate change based on the relationship between local demographic processes and climate and how this relationship varies based on range position. A rarely tested demographic prediction is that populations at the extremes of a species' climate envelope (e.g., populations in areas with the highest mean annual temperature) will be most sensitive to local shifts in climate (i.e., warming). We tested this prediction using a dynamic species distribution model linking demographic rates to variation in temperature and precipitation for wood frogs (Lithobates sylvaticus) in North America. Using long-term monitoring data from 746 populations in 27 study areas, we determined how climatic variation affected population growth rates and how these --

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Section: Discussionmentioning

confidence: 89%

Range position and climate sensitivity: The structure of among‐population demographic responses to climatic variation

Amburgey

Miller

Grant³

et al. 2017

Global Change Biology

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“…[69] study Kelley et al [77] Tepolt & Somero [64] Barria & Bacigalupe [65] Underwood et al [80] Yu et al [83] Bugg et al [66] Manis & Claussen [78] Darveau et al [68] Fernando et al [73] Fangue et al [72] royalsocietypublishing.org/journal/rspb Proc. R. Soc.…”

Section: Discussionmentioning

confidence: 99%

Limited plasticity in thermally tolerant ectotherm populations: evidence for a trade-off

et al. 2021

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Many species face extinction risks owing to climate change, and there is an urgent need to identify which species' populations will be most vulnerable. Plasticity in heat tolerance, which includes acclimation or hardening, occurs when prior exposure to a warmer temperature changes an organism's upper thermal limit. The capacity for thermal acclimation could provide protection against warming, but prior work has found few generalizable patterns to explain variation in this trait. Here, we report the results of, to our knowledge, the first meta-analysis to examine within-species variation in thermal plasticity, using results from 20 studies (19 species) that quantified thermal acclimation capacities across 78 populations. We used meta-regression to evaluate two leading hypotheses. The climate variability hypothesis predicts that populations from more thermally variable habitats will have greater plasticity, while the trade-off hypothesis predicts that populations with the lowest heat tolerance will have the greatest plasticity. Our analysis indicates strong support for the trade-off hypothesis because populations with greater thermal tolerance had reduced plasticity. These results advance our understanding of variation in populations' susceptibility to climate change and imply that populations with the highest thermal tolerance may have limited phenotypic plasticity to adjust to ongoing climate warming.

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“…Our frogs' lineage (Western lineage), which has colonized from Alaska to the Great Lakes region, may have inherited superior freeze-tolerance mechanisms than those from southern Ohio (Eastern lineage) due to the lower temperatures encountered at higher latitudes. This is supported by the fact that genetics appear to have a strong effect on the thermal physiology of wood frogs (Manis and Claussen 1986), and that morphological variation reflects the genetic differences between lineages (Martof and Humphries 1959;Lee-Yaw et al 2008).…”

Section: Physiologymentioning

confidence: 94%

Kinematic performance and muscle activation patterns during post-freeze locomotion in the Wood Frog (Rana sylvatica)

2018

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Wood Frogs (Rana sylvatica LeConte, 1825 = Lithobates sylvaticus (LeConte, 1825)) exhibit one of the most extreme freeze tolerance responses found in vertebrates. While extensive work is continuing to resolve the physiological mechanisms involved, few have studied the effects of freezing on locomotor performance. The ability to mount an appropriate locomotor response is vital, as locomotion can affect both survivorship and reproductive success. To investigate how the biomechanical processes during locomotion are altered following freezing, stroke cycle timings and kinematic performance were measured prior to and immediately following a freeze–thaw cycle. Additionally, the effects of cooling rate (0.3 versus 0.8 °C/h) were also assessed. While jumping and swimming performance were both reduced post-freeze, the effects were more pronounced during swimming, with observed reductions in velocity and distance travelled. Interestingly, these changes occurred largely independent of cooling rate. Altered stroke cycle timings and highly variable muscle activation/deactivation patterns suggest an impairment in muscle function as frogs continued to recover from the effects of freezing. This was supported by the physiology of frogs post-freeze, specifically, the persistence of elevated glucose levels in muscles important during locomotion. Collectively, these findings suggest that reductions in locomotor performance observed immediately following a freeze–thaw cycle are driven by alterations in muscle function.

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Environmental and genetic influences on the thermal physiology of Rana sylvatica

Cited by 27 publications

References 19 publications

Range position and climate sensitivity: The structure of among‐population demographic responses to climatic variation

Range position and climate sensitivity: The structure of among‐population demographic responses to climatic variation

Limited plasticity in thermally tolerant ectotherm populations: evidence for a trade-off

Kinematic performance and muscle activation patterns during post-freeze locomotion in the Wood Frog (Rana sylvatica)

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