The leopard tortoise (''Stigmochelys pardalis'') is a large and attractively marked

tortoise Tortoises () are reptiles of the family Testudinidae of the order Testudines (Latin: ''tortoise''). Like other turtles, tortoises have a shell to protect from predation and other threats. The shell in tortoises is generally hard, and like oth ...

found in the

savanna A savanna or savannah is a mixed woodland- grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground ...

s of eastern and southern Africa, from

Sudan Sudan ( or ; ar, السودان, as-Sūdān, officially the Republic of the Sudan ( ar, جمهورية السودان, link=no, Jumhūriyyat as-Sūdān), is a country in Northeast Africa. It shares borders with the Central African Republic t ...

to the southern Cape. It is the only extant member of the genus ''Stigmochelys'', although in the past, it was commonly placed in ''

Geochelone ''Geochelone'' is a genus of tortoises. ''Geochelone'' tortoises, which are also known as typical tortoises or terrestrial turtles, can be found in southern Asia. They primarily eat plants. Species The genus consists of two extant species: A n ...

''. This

is a grazing species that favors semiarid, thorny to grassland habitats. In both very hot and very cold weather, it may dwell in abandoned fox, jackal, or

aardvark The aardvark ( ; ''Orycteropus afer'') is a medium-sized, burrowing, nocturnal mammal native to Africa. It is the only living species of the order Tubulidentata, although other prehistoric species and genera of Tubulidentata are known. Unlik ...

holes. The leopard tortoise does not dig other than to make nests in which to lay eggs. Given its propensity for

grassland A grassland is an area where the vegetation is dominated by grasses ( Poaceae). However, sedge ( Cyperaceae) and rush ( Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur na ...

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

s, it grazes extensively upon mixed

grass Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns a ...

es. It also favors succulents and

thistle Thistle is the common name of a group of flowering plants characterised by leaves with sharp prickles on the margins, mostly in the family Asteraceae. Prickles can also occur all over the planton the stem and on the flat parts of the leaves ...

Taxonomy and etymology

The phylogenic placement of the leopard tortoise has been subject to several revisions. Different authors have placed it in ''Geochelone'' (1957), ''Stigmochelys'' (2001), ''Centrochelys'' (2002), and ''Psammobates'' (2006). More recently, consensus appears to have settled on ''Stigmochelys'', a monotypic genus. Considerable debate has occurred about the existence of two subspecies, ''S. p. pardalis'' and ''S. p. babcocki'', but recent work does not support this distinction. ''Stigmochelys'' is a combination of

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

words: ''stigma'' meaning "mark" or "point" and ''chelone'' meaning "tortoise". The specific name ''pardalis'' is from the

Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...

word ''pardus'' meaning "

leopard The leopard (''Panthera pardus'') is one of the five extant species in the genus '' Panthera'', a member of the cat family, Felidae. It occurs in a wide range in sub-Saharan Africa, in some parts of Western and Central Asia, Southern Russia, ...

" and refers to the leopard-like spots on the tortoise's shell.

Description

The leopard tortoise is the fourth-largest species of tortoise in the world, with typical adults reaching and weighing . Adults tend to be larger in the northern and southern ends of their range, where typical specimens weigh up to , and an exceptionally large tortoise may reach and weigh . The

carapace A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the unde ...

is high and domed with steep, almost vertical sides. Juveniles and young adults are attractively marked with black blotches, spots, or even dashes and stripes on a yellow background. In mature adults, the markings tend to fade to a nondescript brown or grey. The head and limbs are uniformly colored yellow, tan, or brown.

Distribution and habitat

They are widely distributed across the arid and savanna regions of eastern and southern Africa, extending from

South Sudan South Sudan (; din, Paguot Thudän), officially the Republic of South Sudan ( din, Paankɔc Cuëny Thudän), is a landlocked country in East Africa. It is bordered by Ethiopia, Sudan, Central African Republic, Democratic Republic of th ...

and Somalia, across

East Africa East Africa, Eastern Africa, or East of Africa, is the eastern subregion of the African continent. In the United Nations Statistics Division scheme of geographic regions, 10-11-(16*) territories make up Eastern Africa: Due to the historica ...

, to

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring coun ...

and

Namibia Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...

. The species is generally absent from the humid forest regions of

Central Africa Central Africa is a subregion of the African continent comprising various countries according to different definitions. Angola, Burundi, the Central African Republic, Chad, the Democratic Republic of the Congo, the Republic of the Co ...

. Over this range, the leopard tortoise occupies the most varied habitats of any African tortoise, including grasslands, thorn-scrub, mesic brushland, and savannas. They can be found at altitudes ranging from sea level to .

Ecology and behavior

Leopard tortoises are

herbivorous A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its diet. As a result of their plant diet, herbivorous animals typically have mouthpar ...

; their diet consists of a wide variety of plants including forbs, thistles, grasses, and succulents. They sometimes gnaw on bones or even hyena feces to obtain calcium, necessary for bone development and their eggshells. Seeds can pass undigested through the gut, so the leopard tortoise plays a significant role in seed dispersal. Normally active during the day, they are less active during hot weather or during the dry season. The leopard tortoise reaches sexual maturity between 12 and 15 years old, and may live as long as 80 to 100 years. During the mating season, males fight over females, ramming and butting their competitors. They trail after females for quite some distance, often ramming them into submission. When mating, the male makes grunting vocalizations. Nesting occurs between May and October when the female digs a hole and lays a clutch of five to 30 eggs. As many as five to seven clutches may be laid in a single season. Incubation takes 8–15 months depending on temperature. The numerous predators of the eggs and hatchlings include monitor lizards, snakes, jackals, and crows. Adults have few natural predators, but lions and hyenas have occasionally been reported preying on them.

Conservation

The leopard tortoise is a widespread species and remains common throughout most of its range. Human activities, including agricultural burning, consumption, and especially commercial exploitation in the pet trade, are potential threats, but have not yet caused significant population declines. They are increasingly being bred in captivity for the pet trade. For example, most tortoises exported from Kenya and Tanzania originate in captive-breeding programs, alleviating collection from the wild. The leopard tortoise has been listed in Appendix II of CITES since 1975, and in 2000, the United States banned their import because of the risk posed by heartwater, an infectious disease carried by tortoise ticks that could seriously impact the US livestock industry.

Gallery

File:Geochelone pardalis00.jpg, One-month-old hatchling Leopard tortoise (Stigmochelys pardalis) juvenile.jpg, Juvenile Image:Tortoise closeup.jpg, Small 20-year-old leopard tortoise eating File:Geochelone pardalis02.jpg, Retracted fore legs of adult female leopard tortoise File:Stigmochelys pardalis05.jpg, Close-up of scutes File:Geochelone pardalis 1.jpg, Three adult leopard tortoises File:Leopard Tortoise.JPG, Mature adult (faded) File:Stamp of Azerbaijan 324.jpg, Leopard tortoise on

Azerbaijan Azerbaijan (, ; az, Azərbaycan ), officially the Republic of Azerbaijan, , also sometimes officially called the Azerbaijan Republic is a transcontinental country located at the boundary of Eastern Europe and Western Asia. It is a part of th ...

stamp File:Geochelone pardalis01.jpg, Three baby leopard tortoises File:Leopard tortoise digging hole.jpg, Leopard tortoise digging a hole to lay eggs File:Leopard tortoise laying eggs.jpg, Leopard tortoise laying eggs File:Leopard tortoise closing hole.jpg, Leopard tortoise closing hole with eggs in

References

External links

* * *
IUCN/SSC Tortoise and Freshwater Turtle Specialist Group
{{Taxonbar , from=Q640955 Stigmochelys Turtles of Africa Reptiles of Southern Africa Fauna of East Africa Reptiles described in 1828 Taxa named by Thomas Bell (zoologist)