Biological control of invasive golden wattle trees (Acacia pycnantha) by a gall wasp, Trichilogaster sp. (Hymenoptera: Pteromalidae), in South Africa

Hoffmann, J. H.; Impson, F.A.C.; Moran, V. C.; Donnelly, D.

doi:10.1016/s1049-9644(02)00039-7

Cited by 54 publications

(46 citation statements)

References 16 publications

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“…Indeed, wattle invasions of Europe (Marchante et al, 2004;Sheppard et al, 2006), South Africa (French and Major, 2001) and the Florida Everglades (Austin, 1978) have caused great concern among naturalists, botanists and conservationists in these regions, where some of the worst examples of eradication of native flora by Acacia species have been seen (Cronk and Fuller, 1995). Wattles threaten native habitats by competing with indigenous vegetation, replacing grass communities, reducing native biodiversity and increasing water loss from riparian zones (Hoffmann et al, 2002). In addition to its great colonizing capacity, it typically dominates the colonized site, with understory species scarce and present only with low cover (Carballeira and Reigosa, 1999).…”

Section: Introductionmentioning

confidence: 99%

The genus Acacia as invader: the characteristic case of Acacia dealbata Link in Europe

2010

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Abstract• We review current knowledge about the biology of the genus Acacia, and Acacia dealbata Link (silver wattle) in particular, as an invader in Europe, focusing on (i) the biology of the genus Acacia; (ii) biological attributes that are important for the invasiveness of the genus and A. dealbata; (iii) possible hypotheses for the invasion success; and (iv) control methods.• Several Australian wattles have been recorded as naturalized in Europe. Acacia has attained pest proportions in certain habitats and protected sites (notably coastal dunes, river courses, natural parks and biosphere reserves).• The spread of Acacia dealbata seems to be assisted by human interference such as soil disturbance and severe fires. The biological attributes favoring invasion by A. dealbata include tolerance of changing soil conditions, the ability to take advantage of environmental disturbance, phenotypic plasticity, vegetative reproduction, fire tolerance and allelopathic potential.• Different hypotheses explaining invasiveness and transition between invasion steps related to biological attributes as the key factor for A. dealbata invasion are discussed. Effects on the biodiversity of native flora are little understood and studies of suppression of autochthonous species are needed. It is desirable that further studies comparing Acacia at field sites in their native and exotic range should be done.• Understanding the biology of invasive wattles in Europe is the first step to an effective control method. Studies comparing plant invaders at field sites in their native and invaded areas seem to be most appropriate in order to be able to attack the most vulnerable stages. Mots-clés :Acacia dealbata / biodiversité / attributs biologiques / genre Acacia / espèces envahissantes Résumé -Le genre Acacia comme envahisseur : caractéristiques du cas Acacia dealbata Link en Europe.• Nous passons en revue les connaissances actuelles sur la biologie du genre Acacia et de Acacia dealbata Link, en particulier comme un envahisseur en Europe, en mettant l'accent sur : (i) la biologie du genre Acacia ; (ii) les attributs biologiques qui sont importants pour le caractère envahissant du genre et d'A. dealbata ; (iii) les hypothèses possibles pour la réussite de l'invasion et (iv) les mé-thodes de contrôle.• Plusieurs acacias australiens ont été enregistrés comme naturalisés en Europe. Acacia a atteint la proportion de nuisible dans certains habitats et sites protégés (notamment des dunes côtières, des cours d'eau, des parcs naturels et des réserves de la biosphère).• La propagation de l'Acacia dealbata semble avoir été aidée par l'intervention humaine, telle que la perturbation des sols et de graves incendies. Les attributs biologiques favorisant l'invasion par A. dealbata incluent la tolérance aux changements des conditions du sol, la capacité à tirer profit des perturbations de l'environnement, la plasticité phénotypique, la reproduction végétative, la tolérance au feu, et le potentiel allélopathique.• Différentes hypothèses expliquant le caractè...

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Section: Introductionmentioning

confidence: 99%

The genus Acacia as invader: the characteristic case of Acacia dealbata Link in Europe

2010

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“…have been introduced worldwide for a variety of purposes, such as reforestation, dune stabilisation, animal fodder, tannin production, windbreaks and fuel wood, as well as for ornamental use The phylogenetic relationships of acacias have recently been clarified in the context of biological control ( Figure 6) (Kleinjan and Hoffman, 2013). A. pycnantha, which is also an invasive alien in South Africa, Portugal and other European countries (Hoffmann et al, 2002;Dorchin et al, 2006;Ndlovu et al, 2013), is not in the same clade as A. longifolia. The same applies to A. saligna, which is invasive in Portugal and in Italy (where it has recently been shown to be a host for the emerging bacterium Xylella fastidiosa).…”

Section: Host Rangementioning

confidence: 98%

Risk to plant health in the EU territory of the intentional release of the bud‐galling wasp Trichilogaster acaciaelongifoliae for the control of the invasive alien plant Acacia longifolia

Rossi¹

2015

EFS2

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“…Parasitoides de la polilla del brote A pesar de la eficacia confirmada del control biológi-co (Howarth 1991, Cruttwell 1998, Mills 2005, Stiling y Cornelissen 2005, actualmente ha sido muy cuestionada su validez en relación a los riesgos implicados en su uso, debido a que la mayoría de los programas de control biológico exitosos o no introducen en el ecosistema especies exóticas que pueden tener algún efecto directo o indirecto sobre la entomofauna, incluyendo la plaga y sus agentes de control en el futuro (Simberloff y Stiling 1996, Louda et al 1997, Boettner et al 2000, Hoffman et al 2002, Linch et al 2002, Hoelmer y Kirk 2005, Mills 2005, van Lenteren et al 2006.…”

Section: Introductionunclassified

El complejo de parasitoides de la polilla del brote del pino en Chile: pasado, presente y posible escenario futuro

Sanz

Leverton

2010

Bosque (Valdivia)

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El complejo de parasitoides de la polilla del brote del pino en Chile: pasado, presente y posible escenario futuroThe parasitoid complex of the pine shoot moth: past, present and probable future scenario SUMMARYThe classical biological control, or the introduction and release of different exotic biocontrol agents to control introduced insect pests, is one of the most currently used methods for decreasing insect pest populations. In Chile the use of these methods for "the European pine shoot moth", Rhyacionia buoliana (Lepidoptera: Tortricidae), was a pioneer decision that supposed the accomplishment of forest management and the implementation of research that permitted the generation of action plans. Today, twenty years after the introduction of Orgilus obscurator (Hymenoptera: Braconidae) as the main parasitoid for control of this pest, the current situation is more complex than expected, with the presence of other native parasitoids and hyperparasitoids. In this work the evolution of the pine shoot moth control in Chile since the detection of the pest in 1985, the beginning of the biological control exerted by O. obscurator, and the present and probable future of this control, will be analyzed.Key words: classical biological control, European pine shoot moth, Orgilus obscurator. RESUMENEl control biológico clásico o la introducción y liberación de biocontroladores exóticos es una de las técnicas más utilizadas en la actualidad para reducir las poblaciones de insectos plaga introducidas. En Chile, el uso de esta técnica fue una decisión pionera para controlar la polilla del brote del pino, Rhyacionia buoliana (Lepidoptera: Tortricidae), que supuso la ejecución de medidas de manejo forestal y la generación de investigación que permitió implementar planes de acción. A veinte años de la introducción de Orgilus obscurator (Hymenoptera: Braconidae) como parasitoide principal de esta plaga, el escenario es más complejo de lo esperado, con la aparición de nuevos parasitoides nativos e hiperparasitoides introducidos. En este trabajo se analiza la evolución que el control biológico de R. buoliana ha tenido en Chile desde el momento de su detección en 1985, el comienzo del control biológico ejercido por O. obscurator, y el presente y posible futuro de dicho control.Palabras clave: control biológico clásico, polilla del brote, Orgilus obscurator.

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Biological control of invasive golden wattle trees (Acacia pycnantha) by a gall wasp, Trichilogaster sp. (Hymenoptera: Pteromalidae), in South Africa

Cited by 54 publications

References 16 publications

The genus Acacia as invader: the characteristic case of Acacia dealbata Link in Europe

The genus Acacia as invader: the characteristic case of Acacia dealbata Link in Europe

Risk to plant health in the EU territory of the intentional release of the bud‐galling wasp Trichilogaster acaciaelongifoliae for the control of the invasive alien plant Acacia longifolia

El complejo de parasitoides de la polilla del brote del pino en Chile: pasado, presente y posible escenario futuro

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