Unlike the smaller and related
black-backed jackal (Lupulella mesomelas), which dwells in open plains, the side-striped jackal primarily dwells in woodland and scrub areas.[7]
Carl Jakob Sundevall named the species Canis adustus in 1847.[8] Fossil remains date to the
Pliocene era.[9] A
mitochondrial DNA sequence alignment for the
wolf-like canids gave a phylogenetic tree with the side-striped jackal and the black-backed jackal being the most
basal members of this clade, which means that this tree is indicating an African origin for the clade.[10][11]
In 2019, a workshop hosted by the
IUCN/SSC Canid Specialist Group recommends that because DNA evidence shows the side-striped jackal (Canis adustus) and black-backed jackal (Canis mesomelas) to form a monophyletic lineage that sits outside of the Canis/Cuon/Lycaon clade, that they should be placed in a distinct genus, Lupulella Hilzheimer, 1906 with the names Lupulella adusta and Lupulella mesomelas.[3] Further investigation indicates that Lupulella is not monophyletic, and that this species should be moved to Schaeffia adusta.[12][13]
Description
The side-striped jackal is a slender, medium-sized canid, which tends to be slightly larger on average than the black-backed jackal. Body mass ranges from 6.5 to 14 kg (14 to 31 lb), head-and-body length from 69 to 81 cm (27 to 32 in) and tail length from 30 to 41 cm (12 to 16 in).[14] Shoulder height can range from 35 to 50 cm (14 to 20 in).[15] Its
pelt is coloured buff-grey. The back is darker grey than the underside, and the
tail is black with a grey, almost silver tip. Indistinct white stripes are present on the
flanks, running from elbow to hip. The boldness of the markings varies between individuals, with those of adults being better defined than those of juveniles.[7]
The side-striped jackal's skull is similar to that of the black-backed jackal's, but is flatter, with a longer and narrower
rostrum. Its
sagittal crest and
zygomatic arches are also lighter in build. Due to its longer rostrum, its third upper
premolar lies almost in line with the others, rather than at an angle. Its
dentition is well suited to an
omnivorous diet. The long, curved canines have a sharp ridge on the posterior surface, and the outer
incisors are canine-like. Its
carnassials are smaller than those of the more
carnivorous black-backed jackal. Females have four
inguinal teats.[7]
Dietary habits
The side-striped jackal tends to be less carnivorous than other jackal species, and is a highly adaptable
omnivore whose dietary preferences change in accordance to seasonal and local variation.[16] It tends to forage solitarily, though family groups of up to 12 jackals have been observed to feed together in western
Zimbabwe. In the wild, it feeds largely on
invertebrates during the wet season and small mammals, such as the
springhare, in the dry months. It frequently scavenges from campsites and the kills of larger
predators. In the wild,
fruit is taken exclusively in season, while in ruralised areas, it can account for 30% of their dietary intake. The side-striped jackal tends to be comparatively less predatory when compared to other jackal species. It typically does not target prey exceeding the size of
neonatal antelopes, and one specimen was recorded to have entered a
duck's pen to eat their feed, whilst ignoring the birds.[7]
The
breeding season for this species depends on where they live; in
Southern Africa, breeding starts in June and ends in November. The side-striped jackal has a
gestation period of 57 to 70 days, with average
litter of three to six young. The young reach
sexual maturity at six to eight months of age, and typically begin to leave when 11 months old. The side-striped jackal is among the few mammal species that mate for life, forming
monogamous pairs.[citation needed]
Subspecies
There are seven recognized
subspecies of the side-striped jackal:[2]
L. a. adusta (West Africa to most of
Angola) – Sundevall's side-striped jackal
L. a. bweha (East Africa; Kisumu,
Kenya) – Elgon side-striped jackal[18]
L. a. centralis (Central Africa;
Cameroon, near the Uham River)
^
abcWozencraft, C. W. (2005).
"Order Carnivora". In Wilson, D. E.; Reader, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference. Vol. 1 (3rd ed.). Johns Hopkins University Press. p. 573.
ISBN978-0-8018-8221-0.
^
abcdeIUCN SSC Canid Specialist Group.
"Side-Striped Jackal". Wildlife Conservation Research Unit. Retrieved 2016-07-11.
^Sundevall, 1847. "Nya Mammalia från Sydafrika" Ofv. K. Svenska Vet.-Akad. Forhandl. Stockholm 1846, 3:
121 [1847]
^Garrido, Guiomar; Arribas, Alfonso (2008). "Canis accitanus nov. sp., a new small dog (Canidae, Carnivora, Mammalia) from the Fonelas P-1 Plio-Pleistocene site (Guadix basin, Granada, Spain)". Geobios. 41 (6): 751.
Bibcode:
2008Geobi..41..751G.
doi:
10.1016/j.geobios.2008.05.002.
^Golvan, Y. J. (1957). "Acanthocephales de l'Angola. I. Oncicola angolensis n. sp.(Archiacanthocephala-Pachysentidae), parasite du Chacal, Canis adustus Sundevall" [Acanthocephala from Angola. I. Oncicola angolensis n. sp.(Archiacanthocephala-Pachysentidae), parasite of the Jackal, Canis adustus Sundevall]. Publicacion Servicos Culturais de la Companhia de Diamantes de Angola. Meseu Dundo Lunda. (in French). 34: 39–50.