The taxonomic status and systematic nomenclature of the Australian dingo remain contentious, resulting in decades of inconsistent applications in the scientific literature and in policy. Prompted by a recent publication calling for dingoes to be considered taxonomically as domestic dogs (Jackson et al. 2017, Zootaxa 4317, 201-224), we review the issues of the taxonomy applied to canids, and summarise the main differences between dingoes and other canids. We conclude that (1) the Australian dingo is a geographically isolated (allopatric) species from all other Canis, and is genetically, phenotypically, ecologically, and behaviourally distinct; and (2) the dingo appears largely devoid of many of the signs of domestication, including surviving largely as a wild animal in Australia for millennia. The case of defining dingo taxonomy provides a quintessential example of the disagreements between species concepts (e.g., biological, phylogenetic, ecological, morphological). Applying the biological species concept sensu stricto to the dingo as suggested by Jackson et al. (2017) and consistently across the Canidae would lead to an aggregation of all Canis populations, implying for example that dogs and wolves are the same species. Such an aggregation would have substantial implications for taxonomic clarity, biological research, and wildlife conservation. Any changes to the current nomen of the dingo (currently Canis dingo Meyer, 1793), must therefore offer a strong, evidence-based argument in favour of it being recognised as a subspecies of Canis lupus Linnaeus, 1758, or as Canis familiaris Linnaeus, 1758, and a successful application to the International Commission for Zoological Nomenclature - neither of which can be adequately supported. Although there are many species concepts, the sum of the evidence presented in this paper affirms the classification of the dingo as a distinct taxon, namely Canis dingo.
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Aichi Target 12 of the Convention on Biological Diversity (CBD) aims to ‘prevent extinctions of known threatened species’. To measure its success, we used a Delphi expert elicitation method to estimate the number of bird and mammal species whose extinctions were prevented by conservation action in 1993 - 2020 (the lifetime of the CBD) and 2010 - 2020 (the timing of Aichi Target 12). We found that conservation prevented 21–32 bird and 7–16 mammal extinctions since 1993, and 9–18 bird and 2–7 mammal extinctions since 2010. Many remain highly threatened, and may still become extinct in the near future. Nonetheless, given that ten bird and five mammal species did go extinct (or are strongly suspected to) since 1993, extinction rates would have been 2.9–4.2 times greater without conservation action. While policy commitments have fostered significant conservation achievements, future biodiversity action needs to be scaled up to avert additional extinctions.
This study used ecological criteria to evaluate systematically the conservation status of all mammals, birds, reptiles and frogs in New South Wales. The outcome was an official schedule of endangered fauna as defined under the New South Wales National Parks and Wildlife Act 1974 as amended by the Endangered Fauna (Interim Protection) Act 1991. The work was modelled on the study by Millsap et al. (1990) which scored a range of biological variables and used expert opinion to determine priorities for conservation. The listing was undertaken by a statutory Scientific Committee and the results provided the first baseline status list for all species in New South Wales. Of the 883 faunal species (including 10 Lord Howe Island subspecies) identified in the state, 233 (26%) were recognized as endangered. Of these, 40 are considered to be extinct in New South Wales. Mammals constituted the worst affected group, with 77 (59%) of the 130 species recorded as endangered, of which 27 species are recorded as extinct in the state. The assessment of the New South Wales fauna also found that adequate ecological information exists for only 6% of the state's species. The outcome of this study not only provided the first official list of the endangered fauna of New South Wales and explained the methods and reasons for listing or excluding each species, but also furnished new material, ideas and directions for programmes to conserve the state's fauna.
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