The Drakensberg Crag Lizard is one of the many fascinating creatures that inhabit the reserve, writes Steve Vincent.
These small lizards—their scientific name is Pseudocordylus melanotus subsp. Transvaalensis—are well adapted to the rugged environment and harsh climate of Verloren Valei and environs. They are known for their tolerance to cold temperatures, surviving in environments where temperatures can drop as low as -5°C. Various sub-species are distributed across South Africa and Lesotho.
They are opportunistic feeders, hunting for mealworms, beetles and other arthropods; they have been known to take other smaller lizards. Drakensberg Crag Lizards are also known to consume small fruits and vegetation, especially when insect prey is scarce.
This dietary flexibility helps them survive in their often harsh and variable environment. It also means they play a crucial role in maintaining the ecological balance in their habitat.
Birds of prey, such as eagles, buzzards and hawks, are their primary predators. Additionally, small mammals like mongooses and genets also pose a threat to these lizards. Their ability to blend into their rocky surroundings and their agility are key survival strategies.
The Drakensberg Crag Lizard is not currently listed as endangered, but habitat destruction and climate change pose significant threats. Conservation efforts are essential to ensure the survival of these unique reptiles and the preservation of their natural habitats.
Mating Rituals and Reproduction
During the breeding season, males become highly territorial and engage in fierce battles to establish dominance and secure mating rights. The male’s vibrant colours and elaborate movements signal his readiness to mate and his suitability as a partner.
These fights often involve dramatic displays of aggression, with males biting and wrestling each other on rocky outcrops. Their sharp teeth and large jaw muscles mean that their bites can be severe.
These photos capture the ferocity of these battles:
(All photographs: Steve Vincent)
After successful courtship, mating occurs, and the female stores the sperm internally until she is ready to give birth. These lizards are ovoviviparous, meaning the eggs are hatched inside the female and she gives birth to live young, which are fully developed and capable of surviving on their own shortly after birth.
Check out the recent reptile survey carried out at Verloren Valei.
References
Bill Branch, Field Guide to Snakes and other Reptiles of Southern Africa (3ed), 2004.
S. McConnachie and G. J. Alexander, “The effect of temperature on digestive and assimilation efficiency, gut passage time and appetite in an ambush foraging lizard, Cordylus melanotus”; available at wiredspace.wits.ac.za/server/api/core/bitstreams/b22dda26-296f-4d91-b9c1-76e437acf676/content (also on www.inaturalist.org; www.animalwised.com; www.jstor.org)
