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German wasp | Vespula germanica

German wasp

Vespula germanica

Coral bush | Ardisia crenata

Coral bush

Ardisia crenata

Purple loosestrife | Lythrum salicaria

Purple loosestrife

Lythrum salicaria

Pom pom weed | Campuloclinium macrocephalum

Pom pom weed

Campuloclinium macrocephalum

Canarybird bush | Crotalaria agatiflora

Canarybird bush

Crotalaria agatiflora

Peanut butter cassia | Senna didymobotrya

Peanut butter cassia

Senna didymobotrya

Rubber vine | Cryptostegia grandiflora

Rubber vine

Cryptostegia grandiflora

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Environmental Programmes

In order to tackle our country’s socio-economic challenges, the government adopted the Outcomes based approach to improve government performance and providing focus on service delivery. find out more

Invasive amphibians in South Africa

Invasive amphibians in South Africa
G. John MEASEY1, Giovanni Vimercati1, Sarah J. Davies1
1Centre for Invasion Biology, Department of Botany & Zoology, Stellenbosch University, Stellenbosch, South Africa

Globally, invasive amphibians are known for their environmental and social impacts that range from toxicity to local fauna and human populations, to direct predation on other amphibians. Although several countries on most continents of the globe have had multiple introductions from many species, South Africa appears to have escaped from allochthonous introductions but instead has a small number of domestic exotics: Hyperolius marmoratus, Sclerophrys gutturalis and Xenopus laevis. Here we present updated information on the invasion of all three South African domestic exotics, and ask how their invasion pathways differ. In each case, genetic studies show human-mediated initial introduction which is generally unintentional, and perhaps unsurprisingly all species have an element of leap-frog dispersal between artificial impoundments. However, the movement of South African frogs has not always been unintentional, and intentional introduction of X. laevis for scientific and medical purposes has resulted in invasions by this species on four continents. Results from a survey of stowaway amphibians entering and moving around South Africa suggest that while this is still an unusual phenomenon, there are indications of increasing numbers of amphibians being imported into the country. This increase in propagule pressure suggests that preventing new introductions will become a key challenge for the future. Despite the low numbers of invasive species, South Africa is currently the most highly invaded for amphibian species on the African content.

Read 3206 times Last modified on Tuesday, 03 May 2016 12:26

General News Updates

2019 National Symposium on Biological Invasio…


This is your invitation to South Africa's 2019 National Symposium on Biological Invasions. The convention is hosted by the Centre for Invasion Biology (CIB), University of Stellenbosch, and the Biolo... Read more

2019 Invasive Species Training


During the past five years (2014-2018), ISSA invasive species trainers have trained 4 000 in the identification of invasive species and laws pertaining to invasive species across South Africa.  ... Read more

Alien Grass Working Group


Who are we? The South African National Alien Grass Working Group was jointly initiated by the South African Biodiversity Institute (SANBI) and the Centre for Excellence in Invasion Biology (C·I·B) in... Read more

Permits for planting indigenous Cynodon?


On 16 February, 2018, South Africa's Department of Environmental Affairs issued amendments to the regulations and lists relating to the National List of Invasive Species.  Updates to the draft&n... Read more

Invasive species training 2018 dates released


Interested in invasive species?  How much do you know about NEMBA invasive species compliance for landowners and organs of state? The South African Green Industries Council (SAGIC) have released... Read more

Communications post for Africa advertised


The Nature Conservancy has advertised a brand new post:  Communications Manager, Africa Region. Knowledge of invasive species and water would be an asset in this post. See details below:    Job Titl... Read more