Viverridae is a
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
of small to medium-sized,
feliform mammals. The viverrids () comprise 33
species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...
placed in 14
genera
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial ...
. This family was named and first described by
John Edward Gray
John Edward Gray, Fellow of the Royal Society, FRS (12 February 1800 – 7 March 1875) was a British zoology, zoologist. He was the elder brother of zoologist George Robert Gray and son of the pharmacologist and botanist Samuel Frederick Gray ...
in 1821.
Viverrids occur all over
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...
,
southern Europe
Southern Europe is the southern region of Europe. It is also known as Mediterranean Europe, as its geography is essentially marked by the Mediterranean Sea. Definitions of Southern Europe include some or all of these countries and regions: Alba ...
, and
South
South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west.
Etymology
The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþa ...
and
Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...
, across the
Wallace Line
The Wallace Line or Wallace's Line is a faunal boundary line drawn in 1859 by the British naturalist Alfred Russel Wallace and named by English biologist Thomas Henry Huxley that separates the biogeographical realms of Asia and Wallacea, a tran ...
. Their occurrence in
Sulawesi and in some of the adjoining islands shows them to be ancient inhabitants of the
Old World
The "Old World" is a term for Afro-Eurasia that originated in Europe , after Europeans became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia, which were previously thought of by th ...
tropics
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in
the Southern Hemisphere at S. The tropics are also referred ...
.
Characteristics
Viverrids have four or five toes on each foot and half-retractile
claws. They have six
incisors
Incisors (from Latin ''incidere'', "to cut") are the front teeth present in most mammals. They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side, top and bottom). Opossums have 18, wh ...
in each jaw and
molars
The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. They are used primarily to grind food during chewing. The name ''molar'' derives from Latin, ''molaris dens'', meaning "millstone to ...
with two tubercular grinders behind in the upper jaw, and one in the lower jaw. The tongue is rough with sharp prickles. A pouch or
gland
In animals, a gland is a group of cells in an animal's body that synthesizes substances (such as hormones) for release into the bloodstream ( endocrine gland) or into cavities inside the body or its outer surface ( exocrine gland).
Structure
...
occurs beneath the anus, but there is no
cecum
The cecum or caecum is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, to which it is joined). The w ...
.
[
Viverrids are the most primitive of all the families of feliform ]Carnivora
Carnivora is a monophyletic order of placental mammals consisting of the most recent common ancestor of all cat-like and dog-like animals, and all descendants of that ancestor. Members of this group are formally referred to as carnivorans, ...
and clearly less specialized than the Felidae
Felidae () is the family of mammals in the order Carnivora colloquially referred to as cats, and constitutes a clade. A member of this family is also called a felid (). The term "cat" refers both to felids in general and specifically to the ...
. In external characteristics, they are distinguished from the Felidae by the longer muzzle and tuft of facial vibrissae
Vibrissae (; singular: vibrissa; ), more generally called Whiskers, are a type of stiff, functional hair used by mammals to sense their environment. These hairs are finely specialised for this purpose, whereas other types of hair are coarse ...
between the lower jaw
In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower teeth in place. The mandible sits beneath the maxilla. It is the only movable bone ...
bones, and by the shorter limbs and the five-toed hind foot with the first digit present. The skull differs by the position of the postpalatine foramina on the maxilla
The maxilla (plural: ''maxillae'' ) in vertebrates is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. The ...
, almost always well in advance of the maxillopalatine suture, and usually about the level of the second premolar
The premolars, also called premolar teeth, or bicuspids, are transitional teeth located between the canine and molar teeth. In humans, there are two premolars per quadrant in the permanent set of teeth, making eight premolars total in the mouth ...
; and by the distinct external division of the auditory bulla
The tympanic part of the temporal bone is a curved plate of bone lying below the squamous part of the temporal bone, in front of the mastoid process, and surrounding the external part of the ear canal.
It originates as a separate bone (tympani ...
into its two elements either by a definite groove or, when rarely this is obliterated, by the depression of the tympanic bone in front of the swollen entotympanic. The typical dental formula
Dentition pertains to the development of teeth and their arrangement in the mouth. In particular, it is the characteristic arrangement, kind, and number of teeth in a given species at a given age. That is, the number, type, and morpho-physiolog ...
is: , but the number may be reduced, although never to the same extent as in the Felidae.[
Their flesh-shearing ]carnassial
Carnassials are paired upper and lower teeth modified in such a way as to allow enlarged and often self-sharpening edges to pass by each other in a shearing manner. This adaptation is found in carnivorans, where the carnassials are the modified ...
teeth are relatively undeveloped compared to those of other feliform carnivores. Most viverrid species have a penis bone (a baculum
The baculum (also penis bone, penile bone, or ''os penis'', ''os genitale'' or ''os priapi'') is a bone found in the penis of many placental mammals. It is absent from the human penis, but present in the penises of some primates, such as the ...
).
Classification
Living species
In 1821, Gray defined this family as consisting of the genera '' Viverra'', '' Genetta'', '' Herpestes'', and ''Suricata''.[ ]Reginald Innes Pocock
Reginald Innes Pocock F.R.S. (4 March 1863 – 9 August 1947) was a British zoologist.
Pocock was born in Clifton, Bristol, the fourth son of Rev. Nicholas Pocock and Edith Prichard. He began showing interest in natural history at St. Edwar ...
later redefined the family as containing a great number of highly diversified genera, and being susceptible of division into several subfamilies
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...
, based mainly on the structure of the feet and of some highly specialized scent gland
Scent gland are exocrine glands found in most mammals. They produce semi-viscous secretions which contain pheromones and other semiochemical compounds. These odor-messengers indicate information such as status, territorial marking, mood, and s ...
s, derived from the skin, which are present in most of the species and are situated in the region of the external generative organs. He subordinated the subfamilies Hemigalinae, Paradoxurinae
Paradoxurinae is a subfamily of the feliform viverrids that was denominated and first described by John Edward Gray in 1864. Pocock subordinated the genera
Genus ( plural genera ) is a taxonomic rank used in the biological classification ...
, Prionodontinae, and Viverrinae to the Viverridae.[
In 1833, ]Edward Turner Bennett
Edward Turner Bennett (6 January 1797 – 21 August 1836) was an English zoologist and writer. He was the elder brother of the botanist John Joseph Bennett. described the Malagasy fossa
Fossa may refer to:
Animals
* Fossa (animal), the common name of a carnivoran mammal of genus ''Cryptoprocta'' endemic to Madagascar
* ''Fossa'', the Latin genus name of the Malagasy civet, a related but smaller mammal endemic to Madagascar
Pla ...
(''Cryptoprocta ferox'') and subordinated the Cryptoprocta to the Viverridae. A molecular
A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion. In quantum physics, organic chemistry, and bioch ...
and morphological analysis based on DNA/DNA hybridization experiments suggests that ''Cryptoprocta'' does not belong within Viverridae, but is a member of the Eupleridae
Eupleridae is a Family (biology), family of carnivorans endemic to Madagascar and comprising 10 known living species in seven genus, genera, commonly known as euplerids, Malagasy mongooses or Malagasy carnivorans. The best known species is t ...
.
The African palm civet (''Nandinia binotata'') resembles the civets of the Viverridae, but is genetically distinct and belongs in its own monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...
family, the Nandiniidae. There is little dispute that the ''Poiana'' species are viverrids.[
DNA analysis based on 29 ]Carnivora
Carnivora is a monophyletic order of placental mammals consisting of the most recent common ancestor of all cat-like and dog-like animals, and all descendants of that ancestor. Members of this group are formally referred to as carnivorans, ...
species, comprising 13 Viverrinae species and three species representing '' Paradoxurus'', '' Paguma'' and Hemigalinae, confirmed Pocock's assumption that the African linsang ''Poiana'' represents the sister group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree.
Definition
The expression is most easily illustrated by a cladogram:
Taxon A and ...
of the genus '' Genetta''. The placement of '' Prionodon'' as the sister group of the family Felidae
Felidae () is the family of mammals in the order Carnivora colloquially referred to as cats, and constitutes a clade. A member of this family is also called a felid (). The term "cat" refers both to felids in general and specifically to the ...
is strongly supported, and it was proposed that the Asiatic linsangs be placed in the monogeneric family Prionodontidae.
Phylogeny
The phylogenetic relationships of Viverridae are shown in the following cladogram:
Extinct species
See also
*List of viverrids
Viverridae is a family of mammals in the order Carnivora, composed mainly of the civets and genets. A member of this family is called a viverrid. They are widespread primarily throughout Africa, India, and southeast Asia, and are found primarily ...
References
External links
*
University of Michigan's Animal Diversity Web page
ITIS page
The Straight Dope on Civet Cats
{{Authority control
Mammal families
Extant Ypresian first appearances
Taxa named by John Edward Gray