| the inadvertent introduction into australia of trypanosoma nabiasi, the trypanosome of the european rabbit (oryctolagus cuniculus), and its potential for biocontrol. | wild rabbits (oryctolagus cuniculus) in australia are the descendents of 24 animals from england released in 1859. we surveyed rabbits and rabbit fleas (spilopsyllus cuniculi) in australia for the presence of trypanosomes using parasitological and pcr-based methods. trypanosomes were detected in blood from the european rabbits by microscopy, and pcr using trypanosome-specific small subunit ribosomal rna (ssu rrna) gene primers and those in rabbit fleas by pcr. this is the first record of trypano ... | 2005 | 16101782 |
| myxomatosis: the introduction of the european rabbit flea spilopsyllus cuniculi (dale) into wild rabbit populations in australia. | 1. the european rabbit flea spilopsyllus cuniculi (dale) bred successfully in wild rabbits on three properties in new south wales and, within two breeding seasons, almost every rabbit shot within a quarter of a mile of a release site was infested.2. it was demonstrated that the flea transmitted myxoma virus in the field.3. in areas where more than 75% of the rabbits shot at the beginning of the breeding season were flea-infested and myxoma virus was present, populations failed to show the expect ... | 1971 | 5285938 |
| the differential transmissibility of myxoma virus strains of differing virulence grades by the rabbit flea spilopsyllus cuniculi (dale). | laboratory studies showed that few rabbit fleas (spilopsyllus cuniculi (dale)) transmitted myxomatosis after removal from wild rabbits (oryctolagus cuniculus (l) that had been infected for fever than 10-12 days, irrespective of the virulence of the myxoma virus strain involved. rabbits infected with fully virulent (grade i) strains died within 10-15 days and few fleas from these hosts became infective; averaging all the samples takem. 12% of the fleas were infective. also, few fleas acquired inf ... | 1975 | 1058245 |
| myxomatosis: changes in the epidemiology of myxomatosis coincident with the establishment of the european rabbit flea spilopsyllus cuniculi (dale) in the mallee region of victoria. | outbreaks of myxomatosis during the winter or spring have coincided with the establishment of the european rabbit flea in the mallee region. the severity of these outbreaks has varied from causing complete suppression of the normal spring increase in rabbit numbers to being completely ineffective in a year in which late spring rains allowed rabbit breeding to extend into the early summer.in 1973 and 1974 effective spring myxomatosis caused heavy mortality in kittens before they emerged from the ... | 1978 | 569676 |
| myxomatosis: the transmission of a highly virulent strain of myxoma virus by the european rabbit flea sphilopsyllus cuniculi (dale) in the mallee region of victoria. | the european rabbit flea spilopsyllus cuniculi (daley was introduced into australia to act as a vector of myxoma virus. it was first released in the semi-arid mallee region of victoria in 1970 where epizootics cuased by field strains of myxoma virus occur each summer. introductions of the readily identified lausanne strain were made annually following the release of the flea. the introductions were successful and the strain persisted for up to 16 weeks despite competition from field strains. the ... | 1977 | 270525 |
| a model of myxomatosis based on hormonal control of rabbit-flea reproduction. | a two-dimensional first-order nonlinear system of ordinary differential equations with constant coefficients is constructed to model the rabbit/flea dynamics of the european rabbit viral disease known as myxomatosis. it is proved that infected fleas induce stable oscillations of small amplitude for a range of coefficient values when the rothschild coupling coefficient r, which models biochemical control of flea reproduction by the rabbit, attains a critical (hopf) value ro. these oscillations ma ... | 1988 | 3392434 |
| myxomatosis: passive immunity in the offspring of immune rabbits (oryctolagus cuniculus) infested with fleas (spilopsyllus cuniculi dale) and exposed to myxoma virus. | kittens with maternal antibodies to myxoma virus, the offspring of rabbits which had recovered from myxomatosis, were exposed to fleas contaminated with myxoma virus and/or contact with infected rabbits from birth. all kittens died or became infected before 8 weeks of age. when compared with adult animals similarly infected the kittens showed no advantage in terms of survival time or recovery rate attributable to maternal antibodies. flea transmission of virus was found more effective than conta ... | 1975 | 1054058 |