Hydrated body fluid osmolality values for species of Cyclorana

Stephen Reynolds

    Research output: Contribution to journalArticlepeer-review


    A hydration procedure for frogs is described that involves two episodes of bladder emptying and rehydration prior to determining hydrated body-fluid osmolality values. The mean osmolality of hydrated Cyclorana species was similar for C. australis (lymph 225 mOsm/kg, urine 31 mOsm/kg), C. longipes (lymph 211 mOsm/kg, urine 40 mOsm/kg), C. cultripes (lymph 213 mOsm/kg, urine 14 mOsm/kg)and C. platycephala (lymph 214 mOsm/kg, urine 21 mOsm/kg). These standardised values provide a baseline for comparison with dehydrated and active frogs. Using this method the investigator can accurately determine standard mass (the mass of a hydrated frog with an empty bladder), which requires two or more weight measurements.
    Original languageEnglish
    Pages (from-to)171-174
    Number of pages4
    JournalJournal of the Royal Society of Western Australia
    Issue number3
    Publication statusPublished - 2012


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