Activity and resting metabolism of varanid lizards compared with 'typical' lizards

K.A. Christian, K.E. Conley

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    We examined whether Australian varanids as a group are more aerobic than other lizards. The standard metabolic rate (SMR) and maximal oxygen consumption (V02max) were measured for four species of varanid lizards and the skink Tiliqua rugosa at 35°C. These were compared to each other and to the Vo2maxax °f the iguanid lizard Cyclura nubila by analysis of covariance with body mass as a covariate. There were no differences with respect to SMR, but the Vo2max of the lizards fell into three groups: Varanus rosenbergi, V. gouldii and V. panoptes had higher aerobic capacities than V. mertensi and Cyclura nubila, and Tiliqua rugosa had a Vo2max lower than the other species. There is no simple relationship between Vo2max and the time these lizards spend in natural activity. The summer SMRs of V. rosenbergi and T. rugosa were significantly higher than during other seasons. The Vo2max of V. rosenbergi was higher in summer than in other seasons, but T. rugosa showed no seasonal differences in Vo2max. These results indicate that the SMRs of the varanids were similar to those of other lizards, and, despite generalisations in the literature, not all varanid lizards have high aerobic capacities. Varanid lizards may be as physiologically diverse as other lizard families. © 1994 CSIRO.
    Original languageEnglish
    Pages (from-to)185-193
    Number of pages9
    JournalAustralian Journal of Zoology
    Volume42
    Issue number2
    DOIs
    Publication statusPublished - 1994

    Fingerprint

    lizard
    lizards
    metabolism
    Varanus
    covariance analysis
    Scincidae
    summer
    oxygen consumption
    body mass

    Cite this

    @article{3b5c4cce796249a48cab3772c50d11e4,
    title = "Activity and resting metabolism of varanid lizards compared with 'typical' lizards",
    abstract = "We examined whether Australian varanids as a group are more aerobic than other lizards. The standard metabolic rate (SMR) and maximal oxygen consumption (V02max) were measured for four species of varanid lizards and the skink Tiliqua rugosa at 35°C. These were compared to each other and to the Vo2maxax °f the iguanid lizard Cyclura nubila by analysis of covariance with body mass as a covariate. There were no differences with respect to SMR, but the Vo2max of the lizards fell into three groups: Varanus rosenbergi, V. gouldii and V. panoptes had higher aerobic capacities than V. mertensi and Cyclura nubila, and Tiliqua rugosa had a Vo2max lower than the other species. There is no simple relationship between Vo2max and the time these lizards spend in natural activity. The summer SMRs of V. rosenbergi and T. rugosa were significantly higher than during other seasons. The Vo2max of V. rosenbergi was higher in summer than in other seasons, but T. rugosa showed no seasonal differences in Vo2max. These results indicate that the SMRs of the varanids were similar to those of other lizards, and, despite generalisations in the literature, not all varanid lizards have high aerobic capacities. Varanid lizards may be as physiologically diverse as other lizard families. {\circledC} 1994 CSIRO.",
    author = "K.A. Christian and K.E. Conley",
    year = "1994",
    doi = "10.1071/ZO9940185",
    language = "English",
    volume = "42",
    pages = "185--193",
    journal = "Australian Journal of Zoology",
    issn = "0004-959X",
    publisher = "CSIRO Publishing",
    number = "2",

    }

    Activity and resting metabolism of varanid lizards compared with 'typical' lizards. / Christian, K.A.; Conley, K.E.

    In: Australian Journal of Zoology, Vol. 42, No. 2, 1994, p. 185-193.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Activity and resting metabolism of varanid lizards compared with 'typical' lizards

    AU - Christian, K.A.

    AU - Conley, K.E.

    PY - 1994

    Y1 - 1994

    N2 - We examined whether Australian varanids as a group are more aerobic than other lizards. The standard metabolic rate (SMR) and maximal oxygen consumption (V02max) were measured for four species of varanid lizards and the skink Tiliqua rugosa at 35°C. These were compared to each other and to the Vo2maxax °f the iguanid lizard Cyclura nubila by analysis of covariance with body mass as a covariate. There were no differences with respect to SMR, but the Vo2max of the lizards fell into three groups: Varanus rosenbergi, V. gouldii and V. panoptes had higher aerobic capacities than V. mertensi and Cyclura nubila, and Tiliqua rugosa had a Vo2max lower than the other species. There is no simple relationship between Vo2max and the time these lizards spend in natural activity. The summer SMRs of V. rosenbergi and T. rugosa were significantly higher than during other seasons. The Vo2max of V. rosenbergi was higher in summer than in other seasons, but T. rugosa showed no seasonal differences in Vo2max. These results indicate that the SMRs of the varanids were similar to those of other lizards, and, despite generalisations in the literature, not all varanid lizards have high aerobic capacities. Varanid lizards may be as physiologically diverse as other lizard families. © 1994 CSIRO.

    AB - We examined whether Australian varanids as a group are more aerobic than other lizards. The standard metabolic rate (SMR) and maximal oxygen consumption (V02max) were measured for four species of varanid lizards and the skink Tiliqua rugosa at 35°C. These were compared to each other and to the Vo2maxax °f the iguanid lizard Cyclura nubila by analysis of covariance with body mass as a covariate. There were no differences with respect to SMR, but the Vo2max of the lizards fell into three groups: Varanus rosenbergi, V. gouldii and V. panoptes had higher aerobic capacities than V. mertensi and Cyclura nubila, and Tiliqua rugosa had a Vo2max lower than the other species. There is no simple relationship between Vo2max and the time these lizards spend in natural activity. The summer SMRs of V. rosenbergi and T. rugosa were significantly higher than during other seasons. The Vo2max of V. rosenbergi was higher in summer than in other seasons, but T. rugosa showed no seasonal differences in Vo2max. These results indicate that the SMRs of the varanids were similar to those of other lizards, and, despite generalisations in the literature, not all varanid lizards have high aerobic capacities. Varanid lizards may be as physiologically diverse as other lizard families. © 1994 CSIRO.

    UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971021975&doi=10.1071%2fZO9940185&partnerID=40&md5=099a6987d6fd3725f2d7ea0d62b712a0

    U2 - 10.1071/ZO9940185

    DO - 10.1071/ZO9940185

    M3 - Article

    VL - 42

    SP - 185

    EP - 193

    JO - Australian Journal of Zoology

    JF - Australian Journal of Zoology

    SN - 0004-959X

    IS - 2

    ER -