Crocidura ninoyi, 2010
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publication ID |
https://doi.org/ 10.5281/zenodo.6870843 |
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DOI |
https://doi.org/10.5281/zenodo.6870124 |
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persistent identifier |
https://treatment.plazi.org/id/3D474A54-A07E-8712-FFF5-AE9F1477FDFF |
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treatment provided by |
Felipe |
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scientific name |
Crocidura ninoyi |
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Sibuyan White-toothed Shrew
French: Crocidure de Ninoy / German: Sibuyan-WeiRzahnspitzmaus / Spanish: Musarana de Sibuyan
Other common names: Sibuyan Shrew
Taxonomy. Crocidura ninoyi Esselstyn & Goodman, 2010 ,
“ Philippine Islands: Romblon Province, Sibuyan Island, 4-5 km S and 4 km E of Magdiwang, NW slope of Mt. Guitinguitin [= Guiting-Guiting ], 12-45°N, 122-55°E, 325 m elevation.” GoogleMaps
First reported as provisionally assignable to C. mindorus pending further studies, the Sibuyan C. cf. mindorus was treated under C. mindorus by L. R. Heaney and colleagues in 1998 and by R. Hutterer in
2005. Recent phylogenetic analyses by J. A. Esselstyn and colleagues in 2009 and 2010 revealed C. mindorus (as then recognized) to be diphyletic, leading to its formal description as a distinct species. Phylogenetically, C. ninoyi is closely related to C. negrina , C. panayensis , and C. mindorus . T. C. Giarla and Esselstyn in 2015 found genetic evidence of a second species on Sibuyan; further studies are needed. Monotypic.
Distribution. Known only from Mt Guiting-Guiting, Sibuyan I, Philippines. View Figure
Descriptive notes. Head-body 84-97 mm, tail 66-75 mm, hindfoot 14-3-16-3 mm; weight 9-5-13-5 g. Condylo-incisive length: 23-4 mm (mean). Pelage is gray-brown and slightly darker above than on the underparts. Tail pigmentation similar to that of pelage. Tail nearly naked with sparse bristle hairs on the proximal half, thus differing from the Negros White-toothed Shrew ( C. negrina ) and the Panay White-toothed Shrew ( C. panayensis ). The Mindoro White-toothed Shrew ( C. mindorus ) has thickertail with bristle hairs throughout its length. Both, foreand hindfeet are narrower with more robust digits than those of the Mindoro White-toothed Shrew. Soles of the feet are moderately pigmented relative to other members of the central Philippines Crocidura clade, with prominent plantar granulae. Skull is dorsoventrally compressed and less globose than in the syntopic Mindoro White-toothed Shrew. Interorbital region is intermediate in breadth and rostrum relatively short compared to other members of the central Philippine Crocidura clade. Upper tooth row is slightly longer than in the Mindoro White-toothed Shrew and the Panay White-toothed Shrew, but similar to the Negros White-toothed Shrew.
Habitat. Disturbed lowland forest at ¢.325 m, characterized by a canopy of 20-30 m, few epiphytes, extensive mid-canopy vines, and patchy leaflitter cover; also in undisturbed mossy montane forest at ¢.1325 m, with sections dominated by tall bamboo (8-10 m), extensive epiphytes, few vines and dense leaf-litter and humus cover, on Mount Guiting-Guiting. May occur between these elevations, and also above or below.
Food and Feeding. Sibuyan White-toothed Shrews feed on the forest floor on invertebrates.
Breeding. No information.
Activity patterns. Terrestrial and both diurnal and nocturnal.
Movements, Home range and Social organization. No information.
Status and Conservation. Not assessed on The IUCN Red List. The Sibuyan Whitetoothed Shrew is presumably not under threat, although managed mining and logging activities occur on Sibuyan Island. Subsequent to field research that yielded the type series of C. minoyi, about 30% (15,265 ha) of Sibuyan Island was proclaimed a protected area, known as the Mount Guiting-Guiting National Park. Assuming proper
management of this park, the known distribution ofthis species is protected. Further research on the distribution and ecology ofthis species is needed.
Bibliography. Boitani et al. (2006), Esselstyn & Brown (2009), Esselstyn & Goodman (2010), Esselstyn & Oliveros (2010), Esselstyn, Maher & Brown (2011), Esselstyn, Timm & Brown (2009), Giarla & Esselstyn (2015), Goodman & Ingle (1993), Heaney & Ruedi (1994), Heaney, Balete et al. (1998), Heaney, Dolar et al. (2010), Hutterer (2005b).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
