Thermal parameters and locomotor performance in juvenile of Pleurodema nebulosum (Anura: Leptodactylidae) from the Monte Desert

Sanabria, Eduardo Alfredo; Quiroga, Lorena B.; González, Exequiel; Moreno, Daniela; Cataldo, A

doi:10.1016/j.jtherbio.2013.05.005

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…The CT max observed in the juveniles of R. spinulosa had a mean value close to 42.8 °C, which was in the range of temperatures obtained for other species such as R. arenarum and O. occidentalis (Sanabria et al, 2013a) adults, and Pleurodema nebulosum juveniles (Sanabria et al, 2013b) of the Monte desert; and Rhinella granulosus in Caatinga, Brazil (Navas et al, 2007). However, the locomotor performance curve under laboratory conditions had a maximum performance at 25 °C.…”

Section: Discussionsupporting

confidence: 51%

Thermal ecology of the post–metamorphic Andean toad (Rhinella spinulosa) at elevation in the monte desert, Argentina

Sanabria

Rodríguez

Vergara

et al. 2015

Journal of Thermal Biology

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Section: Discussionsupporting

confidence: 51%

Thermal ecology of the post–metamorphic Andean toad (Rhinella spinulosa) at elevation in the monte desert, Argentina

Sanabria

Rodríguez

Vergara

et al. 2015

Journal of Thermal Biology

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“…The same study found that more mantellas were observed outside shelters during warmer months. Several other studies focussing on amphibians have also recorded temperature‐dependent activity levels and behavior (Putnam & Bennett, 1981; Šamajová & Gvoždík, 2009; Sanabria et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Daily activity profile of the golden mantella in the “Froggotron”—A replicated behavioral monitoring system for amphibians

2021

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Research on threatened species in zoos can provide vital information to inform conservation planning and implementation in the field. This is particularly important for rare and cryptic species with behavior patterns that are difficult to observe in the wild. The Critically Endangered golden mantella (Mantella aurantiaca) is an iconic, endemic frog confined to mid‐altitude subhumid forest in Moramanga District, Madagascar. Ecological and behavioral data for this highly threatened species are sparse, and conservation work will need to be informed by both in situ and ex situ research on behavior and habitat preferences. This study utilized environmental information gathered in the field to design a system where behavior and microhabitat use could be measured in captivity. Using replicated climatically controlled chambers (the “Froggotrons”), we analysed the 24‐h activity profile of the golden mantella in relation to temperature and humidity. Golden mantellas showed a bimodal pattern of activity during the day with much less activity during the night. Frogs kept at warmer temperatures (20–25°C) were more active than those kept under cooler conditions (16–19°C). However, the bimodal pattern was retained under the different temperatures, although the second peak occurred slightly earlier under warmer conditions. Most activity was observed when humidity levels were above 85%, although less than half of the mantellas were active outside leaf microhabitats during peak periods. These findings can inform ongoing field surveys through determining the optimum times of day to either capture or count golden mantellas for further conservation actions.

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“…What we do have data on is the temperature response of movement in ectotherms (e.g. insects, frogs and lizards; Gaby et al., 2011; Lachenicht et al., 2010; Lailvaux & Irschick, 2007; Sanabria et al., 2013). These data show that movement rates (e.g.…”

Section: Temperature Responses Of Life History Traitsmentioning

confidence: 99%

“…(2011) (DOI: 10.1007/s00359‐011‐0648‐3), Sanabria et al. (2013) (DOI: 10.1016/j.jtherbio.2013.05.005). The computer code used for numerical simulations of the model can be found in Amarasekare (2024) (https://zenodo.org/records/10497888; DOI: 10.5281/zenodo.10497887).…”

Section: Data Availability Statementmentioning

confidence: 99%

Temperature‐dependent dispersal and ectotherm species' distributions in a warming world

Amarasekare

2024

Journal of Animal Ecology

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Dispersal is a crucial component of species' responses to climate warming. Warming‐induced changes in species' distributions are the outcome of how temperature affects dispersal at the individual level. Yet, there is little or no theory that considers the temperature dependence of dispersal when investigating the impacts of warming on species' distributions. Here I take a first step towards filling this key gap in our knowledge. I focus on ectotherms, species whose body temperature depends on the environmental temperature, not least because they constitute the majority of biodiversity on the planet. I develop a mathematical model of spatial population dynamics that explicitly incorporates mechanistic descriptions of ectotherm life history trait responses to temperature. A novel feature of this framework is the explicit temperature dependence of all phases of dispersal: emigration, transfer and settlement. I report three key findings. First, dispersal, regardless of whether it is random or temperature‐dependent, allows both tropical and temperate ectotherms to track warming‐induced changes in their thermal environments and to expand their distributions beyond the lower and upper thermal limits of their respective climate envelopes. In the absence of dispersal mortality, warming does not alter these new distributional limits. Second, an analysis based solely on trait response data predicts that tropical ectotherms should be able to expand their distributions polewards to a greater degree than temperate ectotherms. Analysis of the dynamical model confirms this prediction. Tropical ectotherms have an advantage when moving to cooler climates because they experience lower within‐patch and dispersal mortality, and their higher thermal optima and maximal birth rates allow them to take advantage of the warmer parts of the year. Previous theory has shown that tropical ectotherms are more successful in invading and adapting the temperate climates than vice versa. This study provides the key missing piece, by showing how temperature‐dependent dispersal could facilitate both invasion and adaptation. Third, dispersal mortality does not affect the poleward expansion of ectotherm distributions. But, it prevents both tropical and temperate ectotherms from maintaining sink populations in localities that are too warm to be viable in the absence of dispersal. Dispersal mortality also affects species' abundance patterns, causing a larger decline in abundance throughout the range when species disperse randomly rather than in response to thermal habitat suitability. In this way, dispersal mortality can facilitate the evolution of dispersal modes that maximize fitness in warmer thermal environments.

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Thermal parameters and locomotor performance in juvenile of Pleurodema nebulosum (Anura: Leptodactylidae) from the Monte Desert

Cited by 8 publications

References 28 publications

Thermal ecology of the post–metamorphic Andean toad (Rhinella spinulosa) at elevation in the monte desert, Argentina

Thermal ecology of the post–metamorphic Andean toad (Rhinella spinulosa) at elevation in the monte desert, Argentina

Daily activity profile of the golden mantella in the “Froggotron”—A replicated behavioral monitoring system for amphibians

Temperature‐dependent dispersal and ectotherm species' distributions in a warming world

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