Biological control ofSenecio jacobaea in Northern California, an enduring success

Pemberton, Robert W.; Turner, Charles E.

doi:10.1007/bf02374303

Cited by 33 publications

(22 citation statements)

References 5 publications

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“…A consignment of L. jacobaeae beetles was subsequently sent from Oregon to New Zealand where first field releases were made in 1983 (Syrett et al 1984). Jacobaea vulgaris was brought under successful biological control in northern California by 1976 (Pemberton and Turner 1990) and in western Oregon in the early 1980s (McEvoy et al 1991;Coombs et al 2004). Between 1983 and 1999, 158 populations of L. jacobaeae beetles were released in different regions of New Zealand.…”

Section: Jacobaea Vulgaris and Its Biological Control Historymentioning

confidence: 99%

Is there rapid evolutionary response in introduced populations of tansy ragwort, Jacobaea vulgaris, when exposed to biological control?

et al. 2010

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Differences in the herbivore community between a plant's native (specialists and generalists) and introduced range (almost exclusively generalists) may lead to the evolution of reduced allocation to defences against specialist herbivores in the introduced range, allowing for increased allocation to competitive ability and to defences against generalist herbivores. Following this logic, the introduction of biological control agents should reverse this evolutionary shift and select for plants with life-history traits that are more similar to those of plants in the native range than those of plants in the introduced range that have not been exposed to biological control. In a common garden experiment, we compared performance and resistance traits of tansy ragwort, Jacobaea vulgaris, among populations from the introduced range (New Zealand and North America) that have either been exposed to or grown free from the biological control agent Longitarsus jacobaeae. For comparison, we included populations from the native European range. We found lower levels of generalist-deterrent pyrrolizidine alkaloids (PAs) and of soluble phenolics in New Zealand populations with than in populations without exposure to L. jacobaeae, while the opposite pattern was detected among North American populations. Contrary to expectation, populations with exposure to L. jacobaeae revealed more feeding damage by L. jacobaeae than populations without exposure. Introduced populations had higher levels of PAs and reproductive output than native J. vulgaris populations. Jacobaea vulgaris was introduced in different parts of the world some 100-130 years ago, while L. jacobaeae was introduced only some 20-40 years ago. Hence, the larger differences observed between native and introduced populations, as compared to introduced C. Rapo Á U.

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Section: Jacobaea Vulgaris and Its Biological Control Historymentioning

confidence: 99%

Is there rapid evolutionary response in introduced populations of tansy ragwort, Jacobaea vulgaris, when exposed to biological control?

et al. 2010

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“…The percentage of individual agents released that contribute to control is however much lower (Julien, 1989;Crawley, 1990;Briese, 2000). Some biocontrol programs have been so successful that over large areas other control techniques have become unnecessary: Salvinia molesta (Cilliers, 1991), Opuntia stricta (Hosking et al, 1988), and Senecio jacobaea (Pemberton & Turner, 1990) provide well-known examples, and more are given by McFadyen (2000). Nevertheless, a much more common outcome is that other control methods continue to be needed for the weed in some or all of its range, so that the interaction of herbicide applications with biocontrol agents may be relevant.…”

Section: Introductionmentioning

confidence: 94%

Integration of Herbicides with Arthropod Biocontrol Agents for Weed Control

Ainsworth¹

2003

Biocontrol Science and Technology

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Classical biological control of weeds using arthropods is being attempted on a large scale in a number of countries, sometimes with spectacularly successful outcomes. However, in many cases biocontrol is not completely effective and use of herbicides on weeds continues to occur, either in the presence of biocontrol agents or as an alternative to them. The ways in which the two techniques may interact are discussed, including direct toxicity of herbicides to biocontrol agents, responses to death of host plants and responses to sublethal changes caused by herbicides with different modes of action. A literature review for selected weed taxa showed that the great majority of publications relate to either chemical or to biological control techniques separately, with integration of the two seldom addressed. Possible reasons for this situation are discussed and some suggestions for future priorities are made.

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“…Casos de sucesso no controle biológico de Senecio jacobaea L. com o uso de insetos são registrados nos Estados Unidos e Austrália (Pemberton & turner 1990;mcevoy et al 1991;mcevoy & coombs 1999;mcLaren et al 2000). No Brasil, estudos como os de Hoffmann & moscardi (1980de Hoffmann & moscardi ( , 1981; mendes et al A maioria dos crisomelídeos são estritamente fitófagos e altamente especializados em seus hábitos alimentares.…”

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Preferência alimentar de Phaedon confinis Klug (Coleoptera, Chrysomelidae) frente a quatro espécies de Senecio (Asteraceae) de interesse pecuário

2014

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Resumo. Uma das principais causas de mortalidade em bovinos está relacionada à intoxicação por plantas de Senecio spp. (Asteraceae). Assim, alternativas para a redução dessas plantas na região sul do Brasil são necessárias a fim de diminuir as perdas na atividade pecuária. Our study aimed to evaluate the feeding preference of larvae and adults of P. confinis by the species S. brasiliensis, Senecio madagascariensis Poiret, Senecio oxyphyllus DC and Senecio selloi DC. Previously, the insects were fed on S. brasiliensis to the experiment at 22 ± 1 o C temperature, 60 ± 5% relative humidity and 12h photophase. Results obtained indicate that injury caused by P. confinis depended on the species of Senecio offered to the insect, with higher consumption of S. brasiliensis. The developmental stage of the insect influences the feeding preference, since neonate larvae demonstrated higher selectivity to the plant host than adults. In addition to S. brasiliensis, adults can be used to control other species of Senecio, especially S. madagascariensis, since there is oviposition on these plants. Feeding Preference of Larvae and Adults of Phaedon confinis

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Biological control ofSenecio jacobaea in Northern California, an enduring success

Cited by 33 publications

References 5 publications

Is there rapid evolutionary response in introduced populations of tansy ragwort, Jacobaea vulgaris, when exposed to biological control?

Is there rapid evolutionary response in introduced populations of tansy ragwort, Jacobaea vulgaris, when exposed to biological control?

Integration of Herbicides with Arthropod Biocontrol Agents for Weed Control

Preferência alimentar de Phaedon confinis Klug (Coleoptera, Chrysomelidae) frente a quatro espécies de Senecio (Asteraceae) de interesse pecuário

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