The contributions of individual traits to survival among terrestrial juvenile pond‐breeding salamanders

Messerman, Arianne F.; Leal, Manuel

doi:10.1111/1365-2435.13973

Cited by 4 publications

(3 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stochastic nature of recruitment in many ephemeral pond breeding amphibians is thought to be a rate‐limiting step (Alford & Richards, 1999; Boone & Bridges, 2003; Kiesecker et al, 2001; Pechmann & Wilbur, 1994; Schmidt et al, 2002; Schmidt et al, 2005; Semlitsch, 2003; Wilbur, 1980; Wilbur & Collins, 1973). Post‐metamorphic amphibians are generally considered to experience high predation and desiccation risk (Burrow et al, 2021; Messerman et al, 2020; Messerman & Leal, 2020, 2022; Roznik & Johnson, 2009), but data describing this portion of the life cycle are lacking in flatwoods salamanders. It is likely that some of this early post‐metamorphic mortality was captured in our egg survival parameter as some estimates of survival to metamorphosis exceed 5%, however this deserves further investigation (Petranka, 1989; Shoop, 1974).…”

Section: Discussionmentioning

confidence: 99%

Predicting the population viability of an endangered amphibian under environmental and demographic uncertainty

Brooks,

Chandler,

Jiao

et al. 2023

Population Ecology

View full text Add to dashboard Cite

Population viability analyses (PVAs) represent a key component of many recovery plans for threatened and endangered species. Demography links the processes that affect individuals to population‐level patterns, and hence projections constructed from demographic data are the most common tools for PVAs. We constructed a size‐structured integral projection model (IPM) for the United States federally endangered Reticulated Flatwoods Salamander, Ambystoma bishopi, to evaluate demographic influences on population growth and predict the efficacy of future management actions. Flatwoods salamanders breed in ephemeral wetlands in the Southeastern United States. The ephemeral nature of breeding sites can result in complete recruitment failure in drought years when wetlands fail to fill, or dry before metamorphosis occurs. As a result, this species exhibits marked temporal variability in vital rates that must be accounted for in projection models. We constructed a stochastic IPM using 13 years of mark‐recapture data (2010–2023) from two breeding wetlands. Variable survival rates exhibited by flatwoods salamanders, coupled with a high probability of recruitment failure, result in a low predicted probability of population persistence. Sensitivity analyses revealed age at maturity and the frequency of recruitment exerted the greatest influence on population growth, and thus managers should prioritize conservation efforts that target these demographic processes. Additional management should consider strategies to dampen temporal variability in larval survival, something that could be achieved through emergency salvage operations, captive rearing efforts, and manipulation of wetland hydroperiods.

show abstract

Section: Discussionmentioning

confidence: 99%

Predicting the population viability of an endangered amphibian under environmental and demographic uncertainty

Brooks,

Chandler,

Jiao

et al. 2023

Population Ecology

View full text Add to dashboard Cite

show abstract

“…2016 ; Bacigalupe et al. 2018 ), and incorporating individual, seasonal, geographic, and interspecific variation and interactions will be daunting ( Sinervo & Adolph 1994 ; Gilbert & Miles 2017 ; Terblanche & Hoffmann 2020 ; Messerman & Leal 2021 ; Seebacher & Little 2021 ; Winterová & Gvoždík 2021 ). But challenges are also opportunities.…”

Section: Discussionmentioning

confidence: 99%

“…2022 ) or the magnitude of individual and genotypic variation ( Dowd et al. 2015 ; Terblanche & Hoffmann 2020 ; Messerman & Leal 2021 ; Seebacher & Little 2021 ; Winterová & Gvoždík 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Designing a Seasonal Acclimation Study Presents Challenges and Opportunities

Huey

Buckley

2022

Integrative Organismal Biology

View full text Add to dashboard Cite

Organisms living in seasonal environments often adjust physiological capacities and sensitivities in response to (or in anticipation of) environment shifts. Such physiological and morphological adjustments (“acclimation” and related terms) inspire opportunities to explore the mechanistic bases underlying these adjustments, to detect cues inducing adjustments, and to elucidate their ecological and evolutionary consequences. Seasonal adjustments (“seasonal acclimation”) can be detected either by measuring physiological capacities and sensitivities of organisms retrieved directly from nature (or outdoor enclosures) in different seasons or less directly by rearing and measuring organisms maintained in the laboratory under conditions that attempt to mimic or track natural ones. But mimicking natural conditions in the laboratory is challenging – doing so requires prior natural-history knowledge of ecologically relevant body temperature cycles, photoperiods, food rations, social environments, among other variables. We argue that traditional laboratory-based conditions usually fail to approximate natural seasonal conditions (temperature, photoperiod, food, ‘lockdown’). Consequently, whether the resulting acclimation shifts correctly approximate those in nature is uncertain, and sometimes is dubious. We argue that background natural history information provides opportunities to design acclimation protocols that are not only more ecologically relevant, but also serve as templates for testing the validity of traditional protocols. Finally, we suggest several best practices to help enhance ecological realism.

show abstract

Divergent physiological acclimation responses to warming between two co-occurring salamander species and implications for terrestrial survival

Messerman

Turrell

Leal

2022

Journal of Thermal Biology

View full text Add to dashboard Cite

The contributions of individual traits to survival among terrestrial juvenile pond‐breeding salamanders

Cited by 4 publications

References 90 publications

Predicting the population viability of an endangered amphibian under environmental and demographic uncertainty

Predicting the population viability of an endangered amphibian under environmental and demographic uncertainty

Designing a Seasonal Acclimation Study Presents Challenges and Opportunities

Divergent physiological acclimation responses to warming between two co-occurring salamander species and implications for terrestrial survival

Contact Info

Product

Resources

About