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Lethal effect of Goniozus legneri on Cactoblastis cactorum: A potential biocontrol agent for inundative releases.
Varone, Laura; Faltlhauser, Ana; Fuentes Corona, Malena; Garrido, Silvina; Cichón, Liliana; Cecere, María Carla; Hight, Stephen D; Bruzzone, Octavio.
Afiliação
  • Varone L; Fundación para el Estudio de Especies Invasivas, Hurlingham, Buenos Aires, Argentina.
  • Faltlhauser A; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.
  • Fuentes Corona M; Fundación para el Estudio de Especies Invasivas, Hurlingham, Buenos Aires, Argentina.
  • Garrido S; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.
  • Cichón L; Fundación para el Estudio de Especies Invasivas, Hurlingham, Buenos Aires, Argentina.
  • Cecere MC; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.
  • Hight SD; Estación Experimental Agropecuaria, INTA - Alto Valle, General Roca, Río Negro, Argentina.
  • Bruzzone O; Estación Experimental Agropecuaria, INTA - Alto Valle, General Roca, Río Negro, Argentina.
Bull Entomol Res ; 114(1): 149-158, 2024 Feb.
Article em En | MEDLINE | ID: mdl-38268111
ABSTRACT
Cactoblastis cactorum (Berg) (Lepidoptera Pyralidae), the cactus moth, is native to South America with a widespread distribution in Argentina. The larvae consume the interior of Opuntia spp. (Cactaceae) plants. The moth was used as a biocontrol agent against invasive non-native Opuntia spp. in many countries around the world. The cactus moth arrived unintentionally in Florida, USA, expanded its range and threatened Opuntia-based agriculture and natural ecosystems in southern North America. The insect is also a pest of cultivated O. ficus-indica L. in Argentina. An endemic South American parasitoid, Goniozus legneri Gordth (Hymenoptera Bethylidae), is used in inundative biological control programmes against lepidopteran pests. The goal of this work was to evaluate G. legneri as a biocontrol agent to be used in inundative releases against C. cactorum. Mortality of C. cactorum by G. legneri was assessed at different spatial scales, as well as the interactions with Apanteles opuntiarum Martínez & Berta (Hymenoptera Braconidae), a common Argentine natural enemy of C. cactorum. The ability of G. legneri to paralyse, parasitise and kill C. cactorum was confirmed. The paralysis inflicted on C. cactorum larvae reduced larval damage to the plants by 85%. Using two parasitoid species increased the mortality of C. cactorum larvae, but it was highly dependent on the order of their arrival. The combined mortality caused by both parasitoids was higher than a single one, in particular when G. legneri arrived first (56 ± 1%), suggesting asymmetric competition due to the preference of G. legneri attacking previously parasitised larvae. Goniozus legneri has potential as an inundative biocontrol agent of C. cactorum, but its interaction with the classical biocontrol agent A. opuntiarum needs to be considered.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Opuntia / Himenópteros / Mariposas Limite: Animals Idioma: En Revista: Bull Entomol Res Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Opuntia / Himenópteros / Mariposas Limite: Animals Idioma: En Revista: Bull Entomol Res Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido