Study

Reproduction in a reintroduced warthog population in the Eastern Cape Province

  • Published source details Somers M.J. & Penzhorn B.L. (1992) Reproduction in a reintroduced warthog population in the Eastern Cape Province. South African Journal of Wildlife Research, 22, 57-60

Actions

This study is summarised as evidence for the following.

Action Category

Translocate to re-establish or boost populations in native range

Action Link
Terrestrial Mammal Conservation
  1. Translocate to re-establish or boost populations in native range

    A study in 1976–1990 in a shrubland reserve in Cape Province, South Africa (Somers & Penzhorn 1992) found that translocated warthogs Phacochoerus aethiopicus survived, bred successfully and abundance increased over approximately 10 years. Ten to 11 years after the release of 20 warthogs, numbers of warthogs counted increased to 641. Thirteen to 14 years after release, 361 individuals were counted. Separate surveys of dead warthogs found that the population comprised a mixture of age groups, including juveniles (<1 year: 67-144 individuals), yearlings (1-2 years: 31-62 individuals) and adults (>2 years: 143-204 individuals). The majority of yearling and adult females examined (80-100%) were pregnant. In 1976–1977, twenty warthogs were introduced into a 6,493-ha reserve dominated by dense thorny scrub. Warthogs were surveyed by helicopter in 1981-1990. In 1987-1990, warthogs were shot at random from helicopters in order for carcasses to be examined and population age structure estimated.

    (Summarised by: Ricardo Rocha)

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust