Salvinia molesta (kariba weed)
Identity
- Preferred Scientific Name
- Salvinia molesta D.S. Mitch.
- Preferred Common Name
- kariba weed
- International Common Names
- EnglishAfrican pyleaquarium water mossaquarium watermossaquarium water-mossAustralian azollabutterfly ferncats tonguegiant azollagiant salviniakariba-weedkoi kandysalviniavelvet weedwater fernwater spangleswatermoss
- Frenchfougère d’eau
- Local Common Names
- Finlandrikkakellussaniainen
- GermanyLästiger büschelfarnSchwimmfarn
- IndiaAfrican payal
- IndonesiaKayambang
- Netherlandsdrijfplantje
- South AfricaWater varing
- ThailandChawk hunu
Pictures
Leaves
Salvinia molesta (kariba weed); leaves short petiolate, in whorls of three, two upper and one lower; upper leaves floating.
©Colin Wilson
Foliage
Salvinia molesta (kariba weed); plants free floating, green, up to 30cm long, 5cm wide, mat-forming, mat to 2.5cm thick (or much thicker, depending on local conditions).
©Colin Wilson
Foliage
Salvinia molesta (kariba weed); plants growing at 100m, Kerala, India.
©S.S. Bir
Infestation
Salvinia molesta (kariba weed); infestation growing in waterway south of Darwin, Australia.
©Bill Parsons
Infestation
Salvinia molesta (kariba weed); infestation. Thick mats of salvinia cut off light to submerged plants, depressing oxygen concentrations, increasing levels of carbon dioxide and hydrogen sulphide in the waters beneath them. Kakadu National Park, Australian Northern Territory.
©Colin Wilson
Adult
Cyrtobagous salviniae (salvinia weevil); adult on Salvinia. As a bio-control, this 4.0mm long weevil is highly effective in reducing giant Salvinia infestations.
©Scott Bauer/USDA Agricultural Research Service/Bugwood.org - CC BY 3.0 US
Adult
Cyrtobagous salviniae (salvinia weevil); adult on Salvinia molesta.
©Colin Wilson
Salvinia molesta
Scott Robinson, Georgia Department of Natural Resources, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Salvinia molesta
Scott Robinson, Georgia Department of Natural Resources, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Salvinia molesta
Scott Robinson, Georgia Department of Natural Resources, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Distribution
Host Plants and Other Plants Affected
| Host | Host status | References |
|---|---|---|
| Oryza sativa (rice) | Main | Hakim et al. (2013) |
Prevention and Control
All imported shipments of aquatic plants, tropical fish and other similar products from infested countries should be closely examined for the presence of S. molesta. Since S. molesta reproduces vegetatively, even small undetected fragments are sufficient to permit an introduction into a new country. As with all noxious weeds, prevention is the most effective way to limit the spread of S. molesta. Production of S. molesta-free products (such as tropical fish and ornamental water plants) is the only sure way to prevent further global movement of this weed.
Chemical Control
Due to the variable regulations around (de-)registration of pesticides, we are for the moment not including any specific chemical control recommendations. For further information, we recommend you visit the following resources:
•
EU pesticides database (http://ec.europa.eu/food/plant/pesticides/eu-pesticides-database/)
•
PAN pesticide database (www.pesticideinfo.org)
•
Your national pesticide guide
Information & Authors
Information
Published In
Copyright
Copyright © CABI. CABI is a registered EU trademark. This article is published under a Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
History
Published online: 4 October 2022
Language
English
Authors
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