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3- Gerrhosaurus validus (The giant plated lizard ) 

From Wikipedia, the free encyclopedia :

 

The giant plated lizard (Gerrhosaurus validus) is a lizard of the Gerrhosauridae family, chiefly found in open, rocky, dry habitats in southern Africa.

Scientific classification:

Kingdom:Animalia

Phylum:Chordata

Class:Reptilia

Order:Squamata

Family:Gerrhosauridae

Genus:Gerrhosaurus

Species:G. validus

Binomial name:

Gerrhosaurus validus

Giant plated lizard

Classification :

 

Species Gerrhosaurus validus 

 

  • Gerrhosaurus validus maltzahni

  • Gerrhosaurus validus validus

Physical attributes :

 

A large lizard with a flattened head and body, its length is a maximum of 75 cm (29.5 in). The soles of the feet have black rubber-like balls, an adaptation to living on rock outcrops. It is called the plated lizard because of the platelike scales on the back.[1] 

This lizard is very shy and hard to approach. When threatened, it will jam itself into rock crevices (aided by its flattened body) and inflate with air, making it impossible to extricate it.

 

It is omnivorous, consuming a fair amount of plant matter in addition to insects and even baby tortoises. It also tends to form loose colonies.[2]

For the external links , refrences  click here to read the full wikipedia article 

Video :

Giant Plated Lizard - Gerrhosaurus validus

Care articles  : 

Giant plated lizard

 

courtesy to :  www.sanbi.org/creature/giant-plated-lizard

Author
Eva Ramulondi
Lowveld National Botanical Garden 
July 2014

Official Common NameGiant plated lizard

Scientific NameMatobosaurus validus (A. Smith, 1849)

Classification:

KingdomAnimalia

PhylumChordata

ClassReptilia

OrderSquamata

FamilyGerrhosauridae

GenusMatobosaurus

Speciesvalidus

Derivation of scientific name :

 

The genus name is partly derived from the Ndebele word matobo meaning ‘bold heads’ in reference to the smooth surface of granite hills found in the Matobo (Matopo) Hills area in southern Zimbabwe where the species is common. The last part of the genus name ‘saurus’ is the Latin translation for the word ‘lizard’. The name ‘plated lizard’ comes from the bony plates found underneath the epidermis that encase the body in a bony body amour

 

Common names :

 

Giant plated lizard (English), reuse-pantserakkedis (Afrikaans), uxamu(isiZulu), chamu (siSwati)

 

The giant plated lizard is the second largest lizard species found in South Africa, after the monitor lizard, and they are known to attain a body length of approximately 690 mm. Giant plated lizards are rupicolous, which means that they live among rocky outcrops, mostly on the upper slopes of granite hills. Giant plated lizards are shy and hard to approach – an individual will often retreat into rock crevices at the slightest disturbance and inflate its body, effectively wedging itself into the crevice and making it very difficult for anything to dislodge it. They occur in most southern African countries including Angola, Botswana, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zimbabwe and Zambia. They are widespread and generally common in their natural range and no conservation actions are recommended.

 

Description

 

Giant plated lizards are large and are characterised by a flattened head and body profile. There are known to grow up to 690 mm in total body length. The back of the lizard is dark brown to black, with each head shield and dorsal scale spotted yellow, giving a speckled appearance; a pair of broad stripes is sometimes present along the back. The throat is dirty white, and the belly is light brown. During the breeding season, the chin, throat and sides of the head of the males become tinged with pink-purple.

 

 

Getting around :

 

Giant plated lizards have strongly muscled legs and are able to move easily on rock faces where they are primarily found. They move slowly when foraging for food, scraping away loose soil or leaf litter looking for hidden prey.

 

 

Distribution: 

The giant plated lizard is endemic to southern Africa and is known to occur in Angola, Botswana, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zimbabwe and Zambia. In South Africa it occurs in the north-eastern parts of Limpopo, Mpumalanga and KwaZulu-Natal.

 

Habitat :

 

It is found in the savanna and grassland biomes where it inhabits rocky outcrops, mostly the upper slopes of granite hills.

 

Food :

 

The giant plated lizard has an omnivorous diet of leaves, flowers and fruits, as well as insects, spiders, millipedes, scorpions and the occasional small lizards and baby tortoises.

 

SEX and LIFE CYCLES :

 

Sex: 

 

There are oviparous (they lay eggs) and after mating, which takes place around midsummer, the females will seek out soil-filled rock crevices in which they will lay two to five large oval eggs. Hatchlings are around 150–170 mm long.

Family life:

 

Giant plated lizards are highly territorial and live in small family groups. Recent studies have shown that there may be some basic parental care.

 

THE BIG PICTURE

 

Friends and Foes

 

Giant plated lizards are preyed upon by snakes, some mammals and certain birds of prey.

 

Smart Strategies

 

When in danger the lizard will slip into the nearest rock cavity or crevice and inflate its body, effectively wedging itself into the crevice or cavity and making it very hard for anything to dislodge it. They have small, black, rubbery balls on the soles of their feet, which help them to cling to rocks.

 

Poorer world without me

 

Giant plated lizards are important components of the food webs in most ecosystems where they occur. They play a critical role both as predator and prey. They can also help in seed dispersal and can be useful to people as they help to control the number of insects in some areas.

 

People and I

 

Giant plated lizards can live for eight to seventeen years in captivity.

 

Conservation status and what the future holds

 

The giant plated lizard is widespread and generally common and therefore it was not considered to be threatened and no conservation actions were recommended in a recent assessment of reptiles found in South Africa, Lesotho and Swaziland (Bates et al. 2014).

 

Relatives

 

The giant plated lizard was previously included in the genus Gerrhosaurus, which includes nine or ten species of plated lizards, which all occur in eastern and southern Africa. Two species are recognised in the recently described genus Matobosaurus, and besides M. validus, the other species is M. maltzahni, which occurs in central and northwest Namibia extending into the southern parts of Angola. The two species can be distinguished from each other based on several scale characters.

References and further reading :

 

  • Alexander, A. & Marais, J. 2007. A guide to the reptiles of southern Africa. Struik Publishers, Cape Town.

  • Andrews, S. & McClintock, D. 1982. Notes on Restio subverticellatus. The Plantsman 37: 230–233.

  • Bates, M. F. 2014. Gerrhosauridae. In M.F. Bates, W.R. Branch, A.M. Bauer, M. Burger, J. Marais, G.J. Alexander and M.S. de Villers (Eds). Atlas and Red list of the reptiles of South Africa, Lesotho and Swaziland. Suricata 1. South African National Biodiversity Institute, Pretoria.

  • Branch. B. 1998. Field guide to snakes and other reptiles of southern Africa. Struik Publishers, Cape Town.

  • Brown, N., Jamieson, H. & Botha, P. 1998. Grow restios.Kirstenbosch Gardening Series. National Botanical Institute, Cape Town.

  • Fitzsimons, I. F. The lizards of South Africa. Transvaal Museum Memoir No.1. Transvaal Museum, Pretoria.

Videos :

Giant plated lizard (Gerrhosaurus validus) in a zoo

Giant Plated Lizard - Gerrhosaurus validus

GERRHOSAURUS VALIDUS - GIANT PLATED LIZARDS

Great Plated Lizard at Stare Poznan Zoo

My two Giant plated lizard (G.validus)

87 Gerrhosaurus validus Giant Plated Lizard Felsenschildechse Aquarium Berlin 2017

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