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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

Current and prospective insect agents for the biological control of Parthenium hysterophorus

Current and prospective insect agents for the biological control of Parthenium hysterophorus
Lorraine Strathie, Andrew McConnachie, Milly Gareeb, Sakhi Sambo
Agricultural Research Council – Plant Protection Research Institute

Parthenium hysterophorus (Asteraceae: Heliantheae; parthenium) continues to increase in spread and abundance in South Africa and further afield on the African continent, with growing concern from land managers due to the plant’s detrimental impacts. In 2013, following research in quarantine, the stem-boring weevil Listronotus setosipennis (Coleoptera: Curculionidae) and the leaf-feeding beetle Zygogramma bicolorata (Coleoptera: Chrysomelidae), were approved for release as bio-control agents. Both agents were reared in large numbers and more than 90 releases were conducted during the 2013-2014 growth season in KwaZulu-Natal and Mpumalanga provinces, where parthenium is most invasive. Field results from the first release season were promising with regards to agent persistence and early levels of damage observed. As additional agents will be required to provide optimal biological control of parthenium, three other insect agents are also under consideration. These include the seed-feeding weevil Smicronyx lutulentus (Coleoptera: Curculionidae) for which the host range research has been completed, the stem-galling moth Epiblema strenuana (Lepidoptera: Tortricidae) for which there are host range complications, and the root-crown feeding moth Carmenta sp. nr. ithacae (Lepidoptera: Sesiidae) which has been imported very recently into quarantine. Progress with these insect agents and their contribution to the biological control of parthenium in South Africa is discussed.

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General News Updates

2019 National Symposium on Biological Invasio…

26-02-2019

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

22-01-2019

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

04-09-2018

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?

01-03-2018

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

28-02-2018

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

25-01-2018

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