Impact of low temperature and host plant on Tuta absoluta
| Autor: | Philippe Béarez, Marianne A. Soares, Nicolas Desneux, Antonio Biondi, James D. Harwood, Mateus R. Campos, Edwige Amiens-Desneux, Luigi Ponti |
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| Přispěvatelé: | Campos, M. R., Amiens-Desneux, E., Bearez, P., Soares, M. A., Ponti, L., Biondi, A., Harwood, J. D., Desneux, N. |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
invasive pest oviposition preference tomato pinworm 15. Life on land Biology Solanum nigrum tomato biology.organism_classification 010603 evolutionary biology 01 natural sciences 010602 entomology low-temperature exposure Solanum lycopersicum Insect Science Botany Tuta absoluta oligophagous insect black nightshade Ecology Evolution Behavior and Systematics Solanaceae life table parameters alternative host |
| Popis: | Alternative host plants are among the key factors influencing the spread of invasive pests because they are utilized as a food source and provide shelter in unfavorable conditions. The South American tomato pinworm (SATP), Tuta absoluta Meyrick (Lepidoptera: Gelechiidae), has a high behavioral and physiological plasticity enabling it to rapidly spread in several countries. Among the multiple strategies used by SATP in the invasion process is the use of alternative host plants including black nightshade (BNS), Solanum nigrum L. (Solanaceae), a perennial plant widely distributed across all habitats worldwide. Besides the life table and behavioral parameters of SATP on tomato, its survival and reproduction in low temperatures on alternative host plants should be assessed to evaluate the likely spread in temperate regions with harsh winters. In our study, comparing solanaceous species through generations, the primary difference was in the mean generation time with SATP reared on BNS, whereby it had a longer development time than larvae and pupae reared on tomato plants. Adults preferred tomato plants even if they had been reared as larvae on BNS. Exposure periods of 7, 14, and 21days to 4 °C indicated that more than 50% of SATP pupae reared on BNS plants survived more than 14days. The survival of SATP reared on tomato plants exceeded 21days and after exposure to 4 °C, females reared on both plants remained fertile. The life table and behavioral parameters recorded demonstrated a significant potential of BNS to support the development of SATP, also at low temperature. Therefore, even with effective border surveillance and phytosanitation processes in place, invasion through an alternative host is possible and difficult to detect. |
| Databáze: | OpenAIRE |
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