A quantitative post-release evaluation of biological control of water lettuce, Pistia stratiotes L. (Araceae) by the weevil Neohydronomus affinis Hustache (Coleoptera: Curculionidae) at Cape Recife Nature Reserve, Eastern Cape Province, South Africa

Moore, G.R. and Hill, M.P. (2012) A quantitative post-release evaluation of biological control of water lettuce, Pistia stratiotes L. (Araceae) by the weevil Neohydronomus affinis Hustache (Coleoptera: Curculionidae) at Cape Recife Nature Reserve, Eastern Cape Province, South Africa. African Entomology, 20 (2). pp. 380-385. ISSN 1021-3589

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Abstract

[from Introduction] Water lettuce, Pistia stratiotes L. (Araceae) is recognized as being among the world’s worst aquatic weeds. In its adventive range, the plant forms extensive mats capable of blocking navigation channels, impeding water flow in irrigation and flood control canals, and disrupting hydropower generation (Holm et al. 1977). Dense mats of the weed prevent light penetration into the water column which negatively affects submerged aquatic plant communities, causing a lowering of the oxygen concentration and thereby reducing benthic invertebrate and fish populations (Neuenschwander et al. 2009).

Item Type:Article
Additional Information:Short communication
Uncontrolled Keywords:Pistia stratiotes L. (Araceae, Neohydronomus affinis Hustache (Coleoptera: Curculionidae), Cape Recife Nature Reserve, Eastern Cape Province, South Africa, waterweeds, water weeds, aquatic weeds, biological control, insects, weevils, sewerage settlement ponds
Subjects:Q Science > QL Zoology > Invertebrates > Insects
Divisions:Faculty > Faculty of Science > Zoology & Entomology
ID Code:3432
Deposited By: Mrs Eileen Shepherd
Deposited On:21 Sep 2012 13:01
Last Modified:21 Sep 2012 13:01
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