Field hydration state varies among tropical frog species with different habitat use

Christopher Tracy, Thomas Tixier, Camille Le NoENe, Keith Christian

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    We have previously shown that ecological habit (e.g., arboreal, terrestrial, amphibious) correlates with thermoregulatory behaviors and water balance physiology among species of hylid frogs in northern Australia. We hypothesized that these frogs would be different with respect to their field hydration states because of the challenges associated with the different ecological habits. There are very few data on the hydration levels that frogs maintain in the field, and the existing data are from disparate species and locations and do not relate hydration state to habit or changes in seasonal water availability. We measured the hydration state of 15 species of frogs from tropical northern Australia to determine the influences of ecological habit and season on the hydration state that these frogs maintain. As predicted, frogs were significantly less hydrated in the dry season than they were in the wet season and showed significantly higher variation among individuals, suggesting that maintaining hydration is more challenging in the dry season. In the wet season, terrestrial species were significantly less hydrated than arboreal or amphibious species. During the dry season, amphibious species that sought refuge in cracking mud after the pond dried were significantly less hydrated than terrestrial or arboreal species. These data suggest that hydration behaviors and voluntary tolerance of dehydration vary with habitat use, even within closely related species in the same family or genus. Terrestrial and arboreal species might be expected to be the most vulnerable to changes in water availability, because they are somewhat removed from water sources, but the physiological characteristics of arboreal frogs that result in significant cutaneous resistance to water loss allow them to reduce the effects of their dehydrating microenvironment.
    Original languageEnglish
    Pages (from-to)197-202
    Number of pages6
    JournalPhysiological and Biochemical Zoology
    Volume87
    Issue number2
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    Anura
    Ecosystem
    frogs
    Habits
    habitats
    dry season
    Water
    wet season
    water
    Hylidae
    cracking
    water balance
    Dehydration
    physiology
    Skin

    Cite this

    Tracy, Christopher ; Tixier, Thomas ; Le NoENe, Camille ; Christian, Keith. / Field hydration state varies among tropical frog species with different habitat use. In: Physiological and Biochemical Zoology. 2014 ; Vol. 87, No. 2. pp. 197-202.
    @article{2ce41130b9154c9f9973fd80be6f0e43,
    title = "Field hydration state varies among tropical frog species with different habitat use",
    abstract = "We have previously shown that ecological habit (e.g., arboreal, terrestrial, amphibious) correlates with thermoregulatory behaviors and water balance physiology among species of hylid frogs in northern Australia. We hypothesized that these frogs would be different with respect to their field hydration states because of the challenges associated with the different ecological habits. There are very few data on the hydration levels that frogs maintain in the field, and the existing data are from disparate species and locations and do not relate hydration state to habit or changes in seasonal water availability. We measured the hydration state of 15 species of frogs from tropical northern Australia to determine the influences of ecological habit and season on the hydration state that these frogs maintain. As predicted, frogs were significantly less hydrated in the dry season than they were in the wet season and showed significantly higher variation among individuals, suggesting that maintaining hydration is more challenging in the dry season. In the wet season, terrestrial species were significantly less hydrated than arboreal or amphibious species. During the dry season, amphibious species that sought refuge in cracking mud after the pond dried were significantly less hydrated than terrestrial or arboreal species. These data suggest that hydration behaviors and voluntary tolerance of dehydration vary with habitat use, even within closely related species in the same family or genus. Terrestrial and arboreal species might be expected to be the most vulnerable to changes in water availability, because they are somewhat removed from water sources, but the physiological characteristics of arboreal frogs that result in significant cutaneous resistance to water loss allow them to reduce the effects of their dehydrating microenvironment.",
    keywords = "frog, habitat use, hydration, seasonal variation, species diversity, thermoregulation, tolerance, tropical environment, water availability, Australia, animal, Anura, article, ecosystem, electrolyte balance, physiology, season, species difference, tropic climate, Animals, Ecosystem, Seasons, Species Specificity, Tropical Climate, Water-Electrolyte Balance",
    author = "Christopher Tracy and Thomas Tixier and {Le NoENe}, Camille and Keith Christian",
    year = "2014",
    doi = "10.1086/674537",
    language = "English",
    volume = "87",
    pages = "197--202",
    journal = "Physiological Zoology",
    issn = "0031-935X",
    publisher = "The University of Chicago Press",
    number = "2",

    }

    Field hydration state varies among tropical frog species with different habitat use. / Tracy, Christopher; Tixier, Thomas; Le NoENe, Camille; Christian, Keith.

    In: Physiological and Biochemical Zoology, Vol. 87, No. 2, 2014, p. 197-202.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Field hydration state varies among tropical frog species with different habitat use

    AU - Tracy, Christopher

    AU - Tixier, Thomas

    AU - Le NoENe, Camille

    AU - Christian, Keith

    PY - 2014

    Y1 - 2014

    N2 - We have previously shown that ecological habit (e.g., arboreal, terrestrial, amphibious) correlates with thermoregulatory behaviors and water balance physiology among species of hylid frogs in northern Australia. We hypothesized that these frogs would be different with respect to their field hydration states because of the challenges associated with the different ecological habits. There are very few data on the hydration levels that frogs maintain in the field, and the existing data are from disparate species and locations and do not relate hydration state to habit or changes in seasonal water availability. We measured the hydration state of 15 species of frogs from tropical northern Australia to determine the influences of ecological habit and season on the hydration state that these frogs maintain. As predicted, frogs were significantly less hydrated in the dry season than they were in the wet season and showed significantly higher variation among individuals, suggesting that maintaining hydration is more challenging in the dry season. In the wet season, terrestrial species were significantly less hydrated than arboreal or amphibious species. During the dry season, amphibious species that sought refuge in cracking mud after the pond dried were significantly less hydrated than terrestrial or arboreal species. These data suggest that hydration behaviors and voluntary tolerance of dehydration vary with habitat use, even within closely related species in the same family or genus. Terrestrial and arboreal species might be expected to be the most vulnerable to changes in water availability, because they are somewhat removed from water sources, but the physiological characteristics of arboreal frogs that result in significant cutaneous resistance to water loss allow them to reduce the effects of their dehydrating microenvironment.

    AB - We have previously shown that ecological habit (e.g., arboreal, terrestrial, amphibious) correlates with thermoregulatory behaviors and water balance physiology among species of hylid frogs in northern Australia. We hypothesized that these frogs would be different with respect to their field hydration states because of the challenges associated with the different ecological habits. There are very few data on the hydration levels that frogs maintain in the field, and the existing data are from disparate species and locations and do not relate hydration state to habit or changes in seasonal water availability. We measured the hydration state of 15 species of frogs from tropical northern Australia to determine the influences of ecological habit and season on the hydration state that these frogs maintain. As predicted, frogs were significantly less hydrated in the dry season than they were in the wet season and showed significantly higher variation among individuals, suggesting that maintaining hydration is more challenging in the dry season. In the wet season, terrestrial species were significantly less hydrated than arboreal or amphibious species. During the dry season, amphibious species that sought refuge in cracking mud after the pond dried were significantly less hydrated than terrestrial or arboreal species. These data suggest that hydration behaviors and voluntary tolerance of dehydration vary with habitat use, even within closely related species in the same family or genus. Terrestrial and arboreal species might be expected to be the most vulnerable to changes in water availability, because they are somewhat removed from water sources, but the physiological characteristics of arboreal frogs that result in significant cutaneous resistance to water loss allow them to reduce the effects of their dehydrating microenvironment.

    KW - frog

    KW - habitat use

    KW - hydration

    KW - seasonal variation

    KW - species diversity

    KW - thermoregulation

    KW - tolerance

    KW - tropical environment

    KW - water availability

    KW - Australia

    KW - animal

    KW - Anura

    KW - article

    KW - ecosystem

    KW - electrolyte balance

    KW - physiology

    KW - season

    KW - species difference

    KW - tropic climate

    KW - Animals

    KW - Ecosystem

    KW - Seasons

    KW - Species Specificity

    KW - Tropical Climate

    KW - Water-Electrolyte Balance

    U2 - 10.1086/674537

    DO - 10.1086/674537

    M3 - Article

    VL - 87

    SP - 197

    EP - 202

    JO - Physiological Zoology

    JF - Physiological Zoology

    SN - 0031-935X

    IS - 2

    ER -