Computer-aided photographic pelage pattern analysis of Giraffa camelopardalis (Artiodactyla: Giraffidae)
The giraffe (Giraffa camelopardalis) is one of the most recognisable animal species on earth. Yet hunting and habitat loss and fragmentation have led to severe, but until recently largely unnoticed, declines of giraffe populations all over Africa. The IUCN recognised one single species with nine subspecies and changed the status from ‘Least Concern’ to ‘Vulnerable’ […]
How many species of giraffe are there?
In a recent paper in Current Biology, Fennessy and colleagues [1] conclude that there are four species of giraffe and that their numbers are declining in Africa. Giraffes (Giraffa camelopardalis) are presently classifi ed as one species, with nine subspecies, which are considered ‘Vulnerable’ on the IUCN Red List [2]. The present consensus of one […]
Response to “How many species of giraffe are there?”
It is not unexpected that a proposal, such as ours [1], of four new mammalian species stirs up controversy, as evident in the correspondence by Bercovitch et al. [2]. We appreciate that their concerns are unrelated to the quality of the genetic data, the methodological approach or analyses, but are focused on the interpretation. Thus, […]
The genetics of conservation: Peering into DNA to save species and ecosystems
Scientists know the bear as Ursus americanus kermodei, or the Kermode bear, named after biologist Frank Kermode. Kermode, a former director of the Royal British Columbia Museum in Victoria, was among the first to research the subspecies. The bear is a color polymorphism of the black bear Ursus americanus. “Spirit bears have one of the […]
More grist for the mill? Species delimitation in the genomic era and its implications for conservation
Species delimitation is one of the most contested areas in modern biology, with widespread disagreement about almost every aspect of the definition and implementation of the “species” label. While this debate is intellectually stimulating, it also has real implications for conservation, where its impacts on taxonomic inflation or inertia can mean that specific populations receive […]
Species assignment and conservation genetics of giraffe in the Republic of Malawi
Historically, giraffe have been translocated across Africa to supplement extant populations, reintroduce extinct populations or to establish new populations, often for conservation and tourism. Such faunal relocations were often carried out disregarding taxonomic affiliation. Today, the small giraffe populations in the Republic of Malawi are assumed to consist of South African giraffe (Giraffa giraffa giraffa), […]
A comparative approach for species delimitation based on multiple methods of multi-locus DNA sequence analysis: A case study of the genus Giraffa (Mammalia, Cetartiodactyla)
Molecular data are now commonly used in taxonomy for delimiting cryptic species. In the case of giraffes, which were treated as a single species (Giraffa camelopardalis) during half of a century, several molecular studies have suggested a splitting into four to seven species, but the criteria applied for taxonomic delimitation were not fully described. In […]
Limited introgression supports division of giraffe into four species
All giraffe (Giraffa) were previously assigned to a single species (G. camelopardalis) and nine subspecies. However, multi-locus analyses of all subspecies have shown that there are four genetically distinct clades and suggest four giraffe species. This conclusion might not be fully accepted due to limited data and lack of explicit gene flow analyses. Here, we […]
Extensive population genetic structure in the giraffe
Background: A central question in the evolutionary diversification of large, widespread, mobile mammals is how substantial differentiation can arise, particularly in the absence of topographic or habitat barriers to dispersal. All extant giraffes (Giraffa camelopardalis) are currently considered to represent a single species classified into multiple subspecies. However, geographic variation in traits such as pelage […]
The origins of the scientific study and classification of giraffes
Giraffes have been known for many thousands of years from rock art and Egyptian artefacts, displayed by Roman emperors at games and triumphs between 46BC and AD274, and briefly exhibited in the zoos of the Italian City States in the 15th Century, yet they remained in the realm of mythology until, in 1764, Ryk Tulbagh, […]