A preliminary study on the genetics of medusae among estuaries was done using gel electrophoresis. Recommendations are made on other options for studies on genetics. Data on temperature and salinity indicated that C. mosaicus medusae have broad tolerances. Temperature may have had some influence on strobilation. Data on size frequency, collected over a period of nine years in Botany Bay, indicated that small medusae were rarely found and were never abundant in the water column from August to November.
Temperature is unlikely to be the only physical influence on strobilation.
There was considerable evidence, from nine years of data collected in Botany Bay, that rainfall influenced the number of recruit medusae in the Bay. In a recruitment season that extended from December to January greatest peaks in abundance of recruits were found immediately after periods of rainfall. Although virtually no recruits were found from August to November, this is also a time of low rainfall. The relative influence of rainfall and temperature, therefore needs to be determined by experiment. The number of times of sampling varies with location and this partly depended on the quality of help from fishers.