Predating a Naija webcam com
Although island size influences the outcome of feral cat eradication campaigns, other factors, such as funding and social issues, also appear to hinder their implementation (Oppel et al. 2011), and eradication campaigns conducted to eliminate impacts on critically endangered native (CR) species (Campbell et al. The timely management or eradication of feral cats on priority islands could arguably avoid several imminent insular vertebrate extinctions (Brooke et al. We also discuss difficulties in assessing the direct impact of feral cats on the population declines and extinctions of endangered species.Only mammal, bird, and reptile species were con sidered, because they are the most widely represented groups on islands and probably the most affected by feral cats.
Unfortunately for some threatened island species, our assessment for needed feral cat eradications came too late to prevent their extinction.Eradication involves a unique action that results in the complete removal of the target species; although the costs are generally high (Oppel et al.2010), the benefits accumulate in perpetuity if reintroduction is prevented.Feral cats have been eradicated from islands in all oceans, with Australasia and the Pacific coast of Mexico being the most active regions.Marion Island (which has an area of 290 square kilometers [km 2 ]) is the largest island on which feral cats have been eradicated, and eradications on much larger islands, such as Dirk Hartog (620 km 2 ), in Western Australia, are planned (Algar et al. Feral cat eradications failed in 19 campaigns, which represent 22% of the attempts to date. We aim here to provide global priorities for insular cat population management, including eradication, by col lectively analyzing the three global reviews of feral cats on island ecosystems. 2011), impacts on endangered vertebrates (Medina et al.
On islands with human inhabitants, which normally have domestic animals, eradication campaigns are more difficult to implement than are those on unin habited or sparsely inhabited islands (Oppel et al. Working with local communities and integrating sustain able biosecurity measures to prevent reintroductions will be key components of successful island feral cat manage ment strategies.