That’s no mystery carnivore (part I)
Though the two photos that feature the Kayan Mentarang animal were taken in 2003, they were not made public until early December 2005 (the second photo, showing the animal from behind, is featured at left). I don’t know why this postponement occurred, but such delays are fairly ordinary given that scientists are often really, really busy, or hesitant to announce controversial news. Then again, some news is deliberately held back until its release might have the most impact. I don’t want to seem cynical so will stop there, but it’s probably not a coincidence that the discovery was announced at the same time as was news that the Indonesian Government plans to start an oil palm plantation in the vicinity of Kayan Mentarang National Park.
During December 2005 and January and February 2006 features on the Kayan Mentarang animal appeared in most newspapers, in most science magazines, in Science (Holden 2005), and on TV. Led by Stephen Wulffraat, the WWF team confirmed that local people were unaware of the creature, and they also noted that none of the mammalogists they’d consulted had been able to identify it. While some biologists noted a vague superficial similarity with lemurs, most concluded that it was a viverrid: a member of the same carnivoran family as civets and genets*. Many viverrid species are highly enigmatic and several have only recently been discovered, have only occasionally been photographed alive, or have even not been photographed alive at all (for a nice review see Schreiber 1989).
* Though note that recent phylogenetic studies have agreed that the traditional Viverridae is not monophyletic. Nandinia is not close to civets and genets, but is in fact a basal feliformian (Flynn et al. 2005); oriental linsangs (Prionodon) are not viverrids, but in fact the sister-taxon to cats (Gaubert & Cordeiro-Estrela 2006, Gaubert & Veron 2003); and Madagascan carnivorans are also not viverrids, but closer to mongooses (Gaubert et al. 2005).
Thanks to its long tail, gracile proportions, size (comparable to that of a house cat), and general civet-like appearance, the Kayan Mentarang animal soon became widely regarded as a probable new viverrid. The adjacent painting is a widely-reproduced image, produced by Wahyu Gumelar for WWF Indonesia, depicting the animal as a new, hitherto unknown viverrid. The idea that the Kayan Mentarang animal might be a hitherto-undiscovered species is exciting and easy to take seriously, given the size of Borneo (third biggest island) and the continuing discovery there of many new species. However, some authors were prepared to go further and be even more precise in their identification, and by far the most popular and widely reported identification has been that the Kayan Mentarang animal in fact represented a known species of viverrid: namely, Hose’s civet Diplogale hosei (also known as Hose’s palm civet or the Brown musang) [see image below]. Named in 1892 and known from less than 20 specimens, this is a poorly known terrestrial viverrid of montane forests, and good observations and photos of it are few and far between.
Arguing that the Kayan Mentarang animal and Hose’s civet were anatomically similar, Chapron et al. (2006) proposed that the alleged new carnivore ‘may not be new’. They clearly weren’t entirely convinced by their own explanation however, as they also noted that the
Sorry, have to stop there. Part II to be posted soon… Lots more on Hose’s civet, and also ‘the reveal’. And if you know the answer (i.e., you’ve read Erik Meijaard et al.’s paper, or you’ve been clever enough to do a bit of surfing and have found the answer on other blogs and news sites), then don’t spoil it for everyone else :)
Oh yeah: happy new year!
Refs - -
Chapron, G., Veron, G. & Jennings, A. 2006. New carnivore species in
Flynn, J. J., Finarelli, J. A., Zehr, S., Hsu, J. & Nedbal, M. A. 2005. Molecular phylogeny of the Carnivora (Mammalia): assessing the impact of increased sampling on resolving enigmatic relationships. Systematic Biology 54, 317-337.
Gaubert, P. & Cordeiro-Estrela, P. 2006. Phylogenetic systematics and tempo of evolution of the Viverrinae (Mammalia, Carnivora, Viverridae) within feliformians: implications for faunal exchange between
- . & Veron, G. 2003. Exhaustive sample set among Viverridae reveals the sister-group of felids: the linsangs as a case of extreme morphological convergence within Feliformia. Proceedings of the Royal Society of
- ., Wozencraft, W. C., Cordeiro-Estrela, P. & Veron, G. 2005. Mosaics of convergences and noise in morphological phylogenies: what’s in a viverrid-like carnivoran? Systematic Biology 54, 865-894.
Holden, C. 2005. New species in
Schreiber, A. 1989. Mysterious mustelids, very mysterious viverrids. BBC Wildlife 7 (12), 816-823.