Details of this species in Marion Is. (sub-Antarctic)
Source: Zavaleta 2002; Wood et al. 2002.
Species Notes for this Location:
Feral cats on Marion Island feed heavily on introduced house mice (Mus musculus).
Management Notes for this Location:
Marion Island (290 km²) is the largest island from which cats have been eradicated. Four methods were used to kill cats on Marion Island over a ten year period (Woods et al. 2002): the viral disease feline panleucopaenia, shooting, cage-traps and gin traps (Bloomer and Bester 1992). The eradication of cats from Marion Island may have released mouse populations. Mice eat large numbers of an endemic moth (Pringleophaga marioni) which is important to nutrient cycling. Therefore the eradication of cats may have resulted in an increase in mouse numbers, reduced moth abundance and changed nutrient availability (Zavaleta 2002).
Breeding success of three species of petrels on Marion Island, South Africa, increased similarly by 17 to 49 percentage points in just two years in cat-free enclosures compared with control sites (van Rensburg 1986, van Rensburg and Bester 1988, in Dickman 1996). The removal of feral cats (F. catus) from Marion Island, South Africa, resulted in increased breeding success of the great-winged petrel (see Pterodroma macroptera in IUCN Red List of Threatened Species) , the white-chinned petrel (see Procellaria aequinoctialis in IUCN Red List of Threatened Species) and Salvin's prion (see Pachyptila vittata in IUCN Red List of Threatened Species) (van Rensburg and Bester 1988, in Dickman 1996). Removal of cats was from a small area via the use of cat-proof enclosures.
Last Modified: 16/02/2005 10:28:22 a.m.