Energetics and water flux of the marbled velvet gecko (Oedura marmorata) in tropical and temperate habitats

K.A. Christian, G. Bedford, B. Green, T Schultz, K. Newgrain

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    The gecko Oedura marmorata was studied in two different climatic zones: the arid zone of central Australia and in the wet-dry tropics of northern Australia. Doubly labelled water was used to measure field metabolic rate (FMR) and water flux rates of animals in the field during the temperate seasons of spring, summer and winter, and during the tropical wet and dry seasons. FMRs were highest in the tropical wet season and lowest in the temperate winter. The geckos in central Australia expended less energy than predicted for a similarly sized iguanid lizard, but geckos from the tropics expended about the same amount of energy as predicted for an iguanid. Water flux rates of geckos from the arid zone were extremely low in all seasons compared to other reptiles, and although water flux was higher in tropical geckos, the rates were low compared to other tropical reptiles. The standard metabolic rates (SMRs) of geckos were similar between the two regions and among the seasons. Geckos selected higher body temperatures (T(b)s) in a laboratory thermal gradient in the summer (33,5°C) and wet (33.8°C) seasons compared to the winter (31.7°C) and dry (31.4°C) seasons. The mean T(b)s selected in the laboratory thermal gradient by geckos from the two regions were not different at a given time of year. The energy expended during each season was partitioned into components of resting metabolism, T(b) and activity. Most of the energy expended by geckos from central Australia could be attributed to the effects of temperature on resting lizards in all three seasons, but the energy expended by tropical geckos includes a substantial component due to activity during both seasons. This study revealed variability in patterns of ecological energetics between populations of closely related geckos, differences which cannot be entirely attributed to seasonal or temperature effects.
    Original languageEnglish
    Pages (from-to)336-342
    Number of pages7
    JournalOecologia
    Volume116
    Issue number3
    DOIs
    Publication statusPublished - Sep 1998

    Fingerprint

    Gekkonidae
    energetics
    habitat
    habitats
    wet season
    water
    energy
    reptile
    lizard
    dry season
    winter
    body temperature
    summer
    temperature profiles
    arid zones
    reptiles
    temperature effect
    lizards
    metabolism
    rate

    Cite this

    Christian, K.A. ; Bedford, G. ; Green, B. ; Schultz, T ; Newgrain, K. / Energetics and water flux of the marbled velvet gecko (Oedura marmorata) in tropical and temperate habitats. In: Oecologia. 1998 ; Vol. 116, No. 3. pp. 336-342.
    @article{72c2130f00ac4a82a42157ab3dd84874,
    title = "Energetics and water flux of the marbled velvet gecko (Oedura marmorata) in tropical and temperate habitats",
    abstract = "The gecko Oedura marmorata was studied in two different climatic zones: the arid zone of central Australia and in the wet-dry tropics of northern Australia. Doubly labelled water was used to measure field metabolic rate (FMR) and water flux rates of animals in the field during the temperate seasons of spring, summer and winter, and during the tropical wet and dry seasons. FMRs were highest in the tropical wet season and lowest in the temperate winter. The geckos in central Australia expended less energy than predicted for a similarly sized iguanid lizard, but geckos from the tropics expended about the same amount of energy as predicted for an iguanid. Water flux rates of geckos from the arid zone were extremely low in all seasons compared to other reptiles, and although water flux was higher in tropical geckos, the rates were low compared to other tropical reptiles. The standard metabolic rates (SMRs) of geckos were similar between the two regions and among the seasons. Geckos selected higher body temperatures (T(b)s) in a laboratory thermal gradient in the summer (33,5°C) and wet (33.8°C) seasons compared to the winter (31.7°C) and dry (31.4°C) seasons. The mean T(b)s selected in the laboratory thermal gradient by geckos from the two regions were not different at a given time of year. The energy expended during each season was partitioned into components of resting metabolism, T(b) and activity. Most of the energy expended by geckos from central Australia could be attributed to the effects of temperature on resting lizards in all three seasons, but the energy expended by tropical geckos includes a substantial component due to activity during both seasons. This study revealed variability in patterns of ecological energetics between populations of closely related geckos, differences which cannot be entirely attributed to seasonal or temperature effects.",
    keywords = "Oedura marmorata, Seasonality, Energetics, Geckos, Thermoregulation",
    author = "K.A. Christian and G. Bedford and B. Green and T Schultz and K. Newgrain",
    year = "1998",
    month = "9",
    doi = "10.1007/s004420050595",
    language = "English",
    volume = "116",
    pages = "336--342",
    journal = "Oecologia",
    issn = "0029-8549",
    publisher = "Springer-Verlag London Ltd.",
    number = "3",

    }

    Energetics and water flux of the marbled velvet gecko (Oedura marmorata) in tropical and temperate habitats. / Christian, K.A.; Bedford, G.; Green, B.; Schultz, T; Newgrain, K.

    In: Oecologia, Vol. 116, No. 3, 09.1998, p. 336-342.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Energetics and water flux of the marbled velvet gecko (Oedura marmorata) in tropical and temperate habitats

    AU - Christian, K.A.

    AU - Bedford, G.

    AU - Green, B.

    AU - Schultz, T

    AU - Newgrain, K.

    PY - 1998/9

    Y1 - 1998/9

    N2 - The gecko Oedura marmorata was studied in two different climatic zones: the arid zone of central Australia and in the wet-dry tropics of northern Australia. Doubly labelled water was used to measure field metabolic rate (FMR) and water flux rates of animals in the field during the temperate seasons of spring, summer and winter, and during the tropical wet and dry seasons. FMRs were highest in the tropical wet season and lowest in the temperate winter. The geckos in central Australia expended less energy than predicted for a similarly sized iguanid lizard, but geckos from the tropics expended about the same amount of energy as predicted for an iguanid. Water flux rates of geckos from the arid zone were extremely low in all seasons compared to other reptiles, and although water flux was higher in tropical geckos, the rates were low compared to other tropical reptiles. The standard metabolic rates (SMRs) of geckos were similar between the two regions and among the seasons. Geckos selected higher body temperatures (T(b)s) in a laboratory thermal gradient in the summer (33,5°C) and wet (33.8°C) seasons compared to the winter (31.7°C) and dry (31.4°C) seasons. The mean T(b)s selected in the laboratory thermal gradient by geckos from the two regions were not different at a given time of year. The energy expended during each season was partitioned into components of resting metabolism, T(b) and activity. Most of the energy expended by geckos from central Australia could be attributed to the effects of temperature on resting lizards in all three seasons, but the energy expended by tropical geckos includes a substantial component due to activity during both seasons. This study revealed variability in patterns of ecological energetics between populations of closely related geckos, differences which cannot be entirely attributed to seasonal or temperature effects.

    AB - The gecko Oedura marmorata was studied in two different climatic zones: the arid zone of central Australia and in the wet-dry tropics of northern Australia. Doubly labelled water was used to measure field metabolic rate (FMR) and water flux rates of animals in the field during the temperate seasons of spring, summer and winter, and during the tropical wet and dry seasons. FMRs were highest in the tropical wet season and lowest in the temperate winter. The geckos in central Australia expended less energy than predicted for a similarly sized iguanid lizard, but geckos from the tropics expended about the same amount of energy as predicted for an iguanid. Water flux rates of geckos from the arid zone were extremely low in all seasons compared to other reptiles, and although water flux was higher in tropical geckos, the rates were low compared to other tropical reptiles. The standard metabolic rates (SMRs) of geckos were similar between the two regions and among the seasons. Geckos selected higher body temperatures (T(b)s) in a laboratory thermal gradient in the summer (33,5°C) and wet (33.8°C) seasons compared to the winter (31.7°C) and dry (31.4°C) seasons. The mean T(b)s selected in the laboratory thermal gradient by geckos from the two regions were not different at a given time of year. The energy expended during each season was partitioned into components of resting metabolism, T(b) and activity. Most of the energy expended by geckos from central Australia could be attributed to the effects of temperature on resting lizards in all three seasons, but the energy expended by tropical geckos includes a substantial component due to activity during both seasons. This study revealed variability in patterns of ecological energetics between populations of closely related geckos, differences which cannot be entirely attributed to seasonal or temperature effects.

    KW - Oedura marmorata

    KW - Seasonality

    KW - Energetics

    KW - Geckos

    KW - Thermoregulation

    UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031710894&doi=10.1007%2fs004420050595&partnerID=40&md5=5755397f81459f0982e8f6227f0d90fc

    U2 - 10.1007/s004420050595

    DO - 10.1007/s004420050595

    M3 - Article

    VL - 116

    SP - 336

    EP - 342

    JO - Oecologia

    JF - Oecologia

    SN - 0029-8549

    IS - 3

    ER -