Phytosanitary irradiation of the invasive herbivorous terrestrial snail Cornu aspersum (Stylommatophora: Helicidae)
Keywords:
escargot, invasive species, prevention of reproduction, radiosensitivity, regulated articlesAbstract
Phytosanitary measures are needed to prevent the transport of snails and slugs during trade in regulated articles. Ionizing radiation is increasing in use as a phytosanitary treatment against insect pests. Irradiation has the potential to be a treatment against snails and slugs, but little research has been done on radiosensitivity of terrestrial herbivorous gastropods. Adult Cornu aspersum (Müller) (Stylommatophora: Helicidae) were subjected to ionizing radiation at 25–100 Gy. Irradiation decreased the number of eggs laid, and those laid by adults irradiated with ≥ 75 Gy did not hatch. This research suggests that gastropod reproduction can be prevented with relatively low doses of radiation. A phytosanitary irradiation dose for C. aspersum should also serve to allow export of live snail species as food to areas that quarantine against them.
Resumen
Se necesitan medidas fitosanitarias para prevenir el transporte de caracoles y babosas durante el comercio en artículos reglamentados. La irradiación ionizante es un tratamiento fitosanitario cuyo uso está incrementando; sin embargo, se han realizado pocos estudios sobre la radio-sensibilidad en gasterópodos terrestres fitófagos. Adultos de Cornu aspersum (Müller) (Stylommatophora: Helicidae) fueron expuestos a radiación ionizante entre 25–100 Gy. La irradiación redujo la cantidad de postura de huevos, y los huevos puestos por adultos irradiados con ≥ 75 Gy no emergieron. Este estudio sugiere que es posible prevenir la reproducción de gasterópodos con dosis relativamente bajas de radiación. Una dosis de irradiación fitosanitaria para C. aspersum también debe servir para permitir la exportación de caracoles vivos como alimento a las áreas que la cuarentena.
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