Galidiinae Galidia elegans Scientific classification Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Carnivora Family: Eupleridae Subfamily: Galidiinae
Genera Galidiinae diversity
Galidiinae is a subfamily of carnivorans restricted to Madagascar which includes six species classified into four genera. Together with the three other species of indigenous Malagasy carnivorans, including the fossa, they are currently classified in the family Eupleridae within the suborder Feliformia. Galidiinae are the smallest of the Malagasy carnivorans, generally weighing about 600 to 900 g. They are agile, short-legged animals with long, bushy tails.
In some of these characters, they resemble the mongooses (family Herpestidae) of continental Africa and southern Eurasia, with which they were previously classified, and accordingly they are said to be "mongoose-like" or even described as "Malagasy mongooses".
The relationships of galidiines to other carnivorans have historically been controversial. Up to the middle of the 20th century, all smaller feliformians, including members of the current families Viverridae, Herpestidae, and Eupleridae as well as some smaller groups, were classified in the single family Viverridae. Galidiines, which share some characters with both the civets and genets (current Viverridae) and the mongooses (Herpestidae), were allied early on both with the former and the latter, with some going as far as to doubt that they should be placed in a different subfamily than the other mongooses.
When the classification of the mongooses as a family separate from Viverridae gained wide acceptance around 1990, the galidiines were classified with them in the family Herpestidae, an arrangement supported by cladistic analysis of morphological data. In the early 2000s, molecular phylogenetic inferences, based on data from several genes, provided evidence for a close relationship between galidiines and other Malagasy carnivorans to the exclusion of mainland feliformians. Accordingly, they were all reclassified into a single family, Eupleridae, which is most closely related to the mongooses of the family Herpestidae.
Within the family Eupleridae, some relations remain unclear, with evidence from several genes and methods of inference providing conflicting evidence as to the relations among Galidiinae, the fossa, and the Malagasy Civet (Fossa fossana). Molecular evidence suggests that Galidia was the earliest to diverge of the four galidiine genera and that Mungotictis and Salanoia are each others' closest relatives. Morphological evidence, on the other hand, supports the relation between Mungotictis and Salanoia, but suggests that Galidictis was the earliest lineage to diverge.
The subfamily includes the following genera and species:
- Genus Galidia
- Ring-tailed Mongoose (Galidia elegans)
- Genus Galidictis
- Genus Mungotictis
- Narrow-striped Mongoose (Mungotictis decemlineata)
- Genus Salanoia
Galidiines range in size from the Narrow-striped Mongoose, which may weigh as little as 500 g, to the Grandidier's Mongoose, which can reach a weight of 1500 g. All are similar in general form to mongooses, sharing with them an agile body supported by short legs, as well as a long, bushy tail and a flat, long cranium. Each of the four genera has a distinctive color pattern reflected in its common name: the tail of the Ring-tailed Mongoose is ringed with brown and black bands; both species of Galidictis have the body covered with broad stripes; the Narrow-striped Mongoose also has stripes over the body, but they are narrower and less conspicuous; and the Brown-tailed Mongoose has a dark brown pelage without any rings or stripes. Most galidiines share a dental formula of , but both species of Salanoia are distinct in having a dental formula of .
Ecology and behavior
Galidiines are generally found in forest, but the Grandidier's and Narrow-striped Mongooses live in open habitats. All species dig burrows for shelter, and several species may also use tree holes. All five species can be found on the ground, but the Narrow-striped and Ring-tailed Mongooses also climb trees. Like true mongooses, galidiines are usually active during the day, with the exception of the two species of Galidictis. Breeding occurs during the (Southern Hemisphere) summer, except in Grandidier's Mongoose, which breeds year-round. Usually, only a single young is born. The Ring-tailed, Grandidier's, and Brown-tailed Mongooses live alone or in pairs, sometimes with their offspring, but the Broad-striped Malagasy and Narrow-striped Mongooses also occur in larger social groups. The diet varies among the species, with the Ring-tailed and Broad-striped Malagasy Mongooses eating mainly small vertebrates like lizards, frogs and rodents, and the other three species eating more invertebrates like insects and scorpions. The Ring-tailed and Brown-tailed Mongooses are also known to eat fruit.
- ^ a b Wozencraft, 2005, pp. 560–561
- ^ a b c d Yoder and Flynn, 2003
- ^ Garbutt, 2007, p. 213
- ^ Pocock, 1916, p. 352
- ^ Pocock, 1916, p. 356
- ^ Lydekker, 1894, p. 278
- ^ Nowak, 2005, p. 204
- ^ Yoder and Flynn, 2003, fig. 2; Gaubert et al., 2005, fig. 2
- ^ a b Yoder et al., 2003; Flynn et al., 2005
- ^ Wozencraft, 2005, pp. 559–561
- ^ Yoder and Flynn, 2003; Flynn et al., 2005
- ^ Flynn et al., 2005
- ^ Yoder and Flynn, 2003, fig. 2
- ^ Durbin et al., 2010
- ^ Garbutt, 2007, p. 216
- ^ Garbutt, 2007, p. 217
- ^ a b Nowak, 2005, pp. 204–207; Garbutt, 2007, pp. 214–219
- ^ Albignac, 1972; Durbin et al., 2010, p. 9. Albignac (1972, p. 677) reports a single lower molar for the brown-tailed mongoose, but Durbin et al. (2010, p. 9, fig. 11) figure and describe the second molar in both of the species of Salanoia they recognise.
- Albignac, R. 1972. The Carnivora of Madagascar. Pp. 667–682 in Battistini, R. & Richard-Vindard, G. (eds.). Biogeography and Ecology in Madagascar. The Hague: W. Junk B.B., Publishers.
- Durbin, J., Funk, S.M., Hawkins, F., Hills, D.M., Jenkins, P.D., Moncrieff, C.B. and Ralainasolo, F.B. 2010. Investigations into the status of a new taxon of Salanoia (Mammalia: Carnivora: Eupleridae) from the marshes of Lac Alaotra, Madagascar (subscription required). Systematics and Biodiversity, published online in advance of print: 15 pp.
- 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(2):317–337.
- Garbutt, N. 2007. Mammals of Madagascar: A Complete Guide. Yale University Press, 304 pp. ISBN 978-0-3001-2550-4
- Gaubert, P., 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(6):865–894.
- Lydekker, R. 1894. A hand-book to the Carnivora. Part 1, Cats, civets, and mungooses. London: Allen.
- Nowak, R.M. 2005. Walker's Carnivores of the World. Johns Hopkins University Press, 313 pp. ISBN 978-0-8018-8032-2
- Pocock, R.I. On some external characters of Galidia, Galidictis, and related genera. Annals and Magazine of Natural History (8)16:351–356.
- Wozencraft, W.C. 2005. Order Carnivora. Pp. 532–628 in Wilson, D.E. & Reeder, D.M. (eds.). Mammal Species of the World: a taxonomic and geographic reference. 3rd ed. Baltimore: The Johns Hopkins University Press, 2 vols., 2142 pp. ISBN 978-0-8018-8221-0
- Yoder, A.D. & Flynn, J.J. 2003. Origin of Malagasy Carnivora. Pp. 1253–1256 in Goodman, S.M. & Benstead, J. (eds.). The Natural History of Madagascar. University of Chicago Press.
- Yoder, A.D., Burns, M.M., Zehr, S., Delefosse, T., Veron, G., Goodman, S.M. & Flynn, J.J. 2003. Single origin of Malagasy Carnivora from an African ancestor. Nature 421:734–737.
- Genus Galidia
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