Insect herbivores associated with species of solanum (solanaceae) in northeastern argentina and southeastern paraguay, with reference to biological control of weeds in south africa and the united states of america
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Based on the insects’ occurrence, abundance and damage to their target weeds, and their absence on other non-target Solanum species, several natural enemies that warrant further investigation were identified.Abstract:
Solanum mauritianum Scopoli and Solanum sisymbriifolium Lamarck are major exotic weeds in South Africa, while Solanum viarum Dunal is similarly problematic in the United States of America. All three species are native to northeastern Argentina and southeastern Paraguay, where they were surveyed for natural enemies in February 1998. Insect agents for Solanum weeds have a tendency to extend their host ranges to include non-target Solanum species, in particular cultivated eggplant (S. melongena L.), during laboratory trials, making it difficult to promote their release. To facilitate the interpretation of such results, other native and cultivated Solanum species that grew in close proximity to the target species were also surveyed to give an indication of the insects’ field host ranges. During the survey period, 19 insect herbivore species were recorded on S. mauritianum, while 8 species were recorded on each of S. sisymbriifolium and S. viarum. Based on the insects’ occurrence, abundance and damage...read more
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Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae
TL;DR: A catalogue of the subfamily Lamiinae (Coleoptera: Cerambycidae) of the Neotropical region is presented and the following new names are given.
Journal ArticleDOI
Assessment of ecological risks in weed biocontrol: Input from retrospective ecological analyses
TL;DR: It is concluded that intensive retrospective ecological studies provide some guidance for the quantitative prospective studies needed to assess candidate biological control agent dynamics and impacts and contribute to improved rigor in the evaluation of total ecological risk to native species.
Journal ArticleDOI
Biological Control of Solanum mauritianum Scop. (Solanaceae) in South Africa: Will Perseverance Pay off?
TL;DR: A review of the biological control programme against S. mauritianum in South Africa, including aspects of the weed that are pertinent to its invasiveness and management, the current status of the two prominent insect agents, and the direction of future research efforts are reviewed.
Journal ArticleDOI
Assessing the risks associated with the release of a flowerbud weevil, Anthonomus santacruzi, against the invasive tree Solanum mauritianum in South Africa
TL;DR: The flowerbud weevil, Anthonomus santacruzi Hustache, is a promising fruit-reducing agent, despite ambiguous results obtained during host-specificity evaluations in quarantine, and should be considered for release against S. mauritianum in South Africa.
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Quarto catálogo dos insetos que vivem nas plantas do Brasil, seus parasitos e predadores
A. G. D'araújo E Silva,C. R. Gonçalves,D.M. Galvao,Alexandra Gonçalves,Javier Gómez,M. Do Nascimento Silva,L. De Simoni +6 more
Journal ArticleDOI
Predictable risk to native plants in weed biological control.
TL;DR: The elements of protection for the native flora are the selection of weed targets that have few or no native congeners and the introduction of biological control organisms with suitably narrow diets.
Biological control of Solanum mauritianum Scopoli (Solanaceae) in South Africa: a review of candidate agents, progress and future prospects.
T. Olckers,Martin Hill +1 more
Journal ArticleDOI
Biology, host specificity and risk assessment of Gargaphia decoris, the first agent to be released in South Africa for the biological control of the invasive tree Solanum mauritianum
TL;DR: The South American tree Solanummauritianum is a major environmental weed in the high-rainfall regions of South Africa and has beentargeted for biological control since 1984, and Gargaphia decoris, imported from Argentina in 1995, became the first agent to be released in South Africa for the biological control of S. mauritianUM.
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