Narrow-striped mongoose

The narrow-striped mongoose (Mungotictis decemlineata) is a member of the family Eupleridae endemic to Madagascar. It inhabits the Madagascar dry deciduous forests in western and southwestern Madagascar, where it lives from sea level to about 125 m (410 ft) between the Tsiribihina and Mangoky rivers.[1] In Malagasy it is called bokiboky (pronounced "Boo-ky Boo-ky").[3]

Narrow-striped mongoose
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Suborder: Feliformia
Family: Eupleridae
Genus: Mungotictis
Pocock, 1915
Species:
M. decemlineata[2]
Binomial name
Mungotictis decemlineata[2]
(A. Grandidier, 1867)
Narrow-striped mongoose range

Taxonomy

Galidia decemlineata was the scientific name used by Alfred Grandidier in 1867 for a mongoose collected on the west coast of Madagascar.[4] It was placed in the genus Mungotictis by Reginald Innes Pocock in 1915.[5]

Phylogeny

The narrow-striped mongoose is part of the Malagasy carnivore family Eupleridae that forms a monophyletic clade. It shares a common ancestor with sister clades of the Feliformia.[6]

Behaviour and ecology
Illustration of the narrow-striped mongoose, 1848

The narrow-striped mongoose is diurnal and lives in matriarchal family groups that practice cooperative rearing of young. Usually, the young of the alpha female will get the most care, and often the lower ranking females' young is neglected to the point of abandonment.

The narrow-striped mongoose demonstrates two unique social behaviours. Females form home ranges in their habitat, where 1-3 females form a stable social unit with their offspring. Males also form their own social units with 2-4 adult males. The male units have a large home range, which often overlap with at least 3 female social units, where mates find one another.[7]

The narrow-striped mongoose creates small nests in trees and brush, and has been known to share trees with Lepilemur species, with which it apparently has little or no interaction. Results of a few studies suggest that the narrow-striped mongoose is primarily insectivorous, but eats also bird eggs and a variety of small animals including rodents, birds, snakes, and even small lemur species such as the gray mouse lemur.[3]

Reproduction

Males often mate with more than one female and are considered polygamous. Females may also mate with more than one male. Narrow-striped mongooses of neighbouring units are closely related, with females more closely related than males, most likely because female disperse in a smaller area. Females give birth to one offspring per season, which is usually born at the end of the dry season between October and December.

If the cub dies, they give birth to another one by February or March. Many offspring do not survive. There is about a 28% success rate of young surviving, and it is often the oldest offspring of the most dominant female that will prevail.[7] The gestation period lasts 74–106 days.[8]

Feeding habits

The narrow-striped mongoose forages in top soil, ground litter and rotten wood from fallen trees. A study in the Kirindy Forest revealed that its diet consists foremost of invertebrates. It feeds on arthropods, insect larvae, gastropods. Remains of reptile eggs, bones and feathers were also found in scat collected.[9]

Air-dried scat was used to determine preferences in the diet of the narrow-striped mongoose. Evidence showed that its diet included reptile egg membrane, bones, feathers and fragments of arthropods. Invertebrates were its main source of food during the dry season of May to August and the wet season of January to March in the Kirindy Forest. The Jaccard index was used to determine which prey items and arthropods it preferred to eat during each season of the year. The results indicated that it consumes any food that was available; it was not selective towards any particular prey item. Insect larva was a main part of its diet. It forages in top soil, ground litter, and rotten wood from fallen trees, which shows how insect larvae could be considered a staple part of its diet. Gastropoda were also found as a main source of food during rainy seasons.[9]

Conservation

The narrow-striped mongoose is currently classified as endangered on the IUCN Red List because it occurs in a severely fragmented area and is threatened by habitat loss due to logging and conversion to agriculturally used land.[1] The western dry forests are both highly fragmented and under higher human pressure than the eastern rain forests. The main cause of decimation of dry deciduous forest in Madagascar is slash-and-burn agriculture by subsistence farmers, but other causes include logging for wild honey and lumber.

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References
  1. Hawkins, F. (2015). "Mungotictis decemlineata". IUCN Red List of Threatened Species. 2015: e.T13923A45199764. Retrieved 30 October 2018.
  2. Wozencraft, W.C. (2005). "Species Mungotictis decemlineata". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 561. ISBN 978-0-8018-8221-0. OCLC 62265494.
  3. Razafimanantsoa, L. (2003). "Mungotictis decemlineata, Narrow-striped Mongoose, Boky-boky". In Goodman, S. M.; Benstead, J. P. (eds.). The Natural History of Madagascar. Chicago: University of Chicago Press. pp. 1357–1360. ISBN 9780226303062.
  4. Grandidier, A. (1867). "Mammifères et oiseaux nouveaux découverts à Madagascar et décrits". Revue et magasin de zoologie pure et appliquée. 2. 19: 84–113.
  5. Pocock, R.I. (1915). "On the Species of the Mascarene Viverrid Galidictis, with a description of a new Genus, and a note on Galidia elegans". The Annals and Magazine of Natural History; Zoology, Botany, and Geology. 8. 16 (92): 113–123.
  6. 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. doi:10.1080/10635150590923326.
  7. Schneider, T. C.; Kappeler, P. M.; Pozzi, L. (2016). "Genetic population structure and relatedness in the narrow-striped mongoose (Mungotictis decemlineata), a social Malagasy carnivore with sexual segregation". Ecology and Evolution. 6 (11): 3734–3749. doi:10.1002/ece3.2123. PMC 4864277. PMID 27231532.
  8. Woolaver, N.; Nichols, R.; Rakotombololona, W.F.; Volahy, A.T. & Durbin, J. (2006). "Population status, distribution and conservation needs of the narrow-striped mongoose Mungotictis decemlineata of Madagascar". Oryx. 40 (1): 67–75. doi:10.1017/S0030605306000159.
  9. Rasolofoniaina, B; Razafy, P.; Andrianarimisa, A.; Razafimahatratra, E. & Kappeler, P.M. (2019). "Feeding ecology of bokiboky, Mungotictis decemlineata (Family Eupleridae)" (PDF). Malagasy Nature. 13: 152–161.
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