Preference of different wheat varieties for egg laying of the wheat stem sawfly, Cephus pygmaeus L.

ElSheikh, Bashar; Trissi, Abdel Nasser; Khamis, Ziad Sheikh; El‐Bouhssini, M.

doi:10.22268/ajpp-037.4.319326

Cited by 1 publication

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“…Generally, insects use vision as cues of long distance when finding oviposition site, and thus, plant morphology is one of key cues. Some herbivorous insects, such as wheat stem sawfly Cephus pygmaeus , and leaf beetle Galeruca tanaceti prefer laying their eggs on the stems of taller plants (Randlkofer et al ., 2009; El-Sheikh et al ., 2019). Consistent with above these insects, O. furnacalis also prefers to oviposit on taller host maize induced by well-watered treatments, because maize with reduction in height and leaf traits (e.g.…”

Section: Discussionmentioning

confidence: 99%

Effects of water deficiency on preference and performance of an insect herbivore Ostrinia furnacalis

Duan

Zhu

Wang

et al. 2021

Bull. Entomol. Res.

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With further climate change still expected, it is predicted to increase the frequency with plants will be water stressed, which subsequently influences phytophagous insects, particularly Lepidoptera with limited mobility of larvae. Previous studies have indicated that oviposition preference and offspring performance of Lepidoptera insects are sensitive to drought separately. However, the integration of their two properties is not always seen. Here, we evaluated changes in oviposition selection and offspring fitness of a Lepidoptera insect under three water-stressed treatments using a model agroecosystem consisting of maize Zea mays, and Asian corn borer Ostrinia furnacalis. Results found that female O. furnacalis preferred to laying their eggs on well-watered maize, and then their offspring tended to survive better, attained bigger larvae mass, and developed more pupae and adults on the preferred maize. Oviposition selection of O. furnacalis positively correlated with height and leaf traits of maize, and offspring fitness positively related with water content and phytochemical traits of hosts. Overall, these results suggest that oviposition choice performed by O. furnacalis reflects the maximization of offspring fitness, supporting preference–performance hypothesis. This finding further highlights that the importance of simultaneous evaluation of performance and performance for water driving forces should be involved, in order to accurately predict population size of O. furnacalis under altered precipitation pattern.

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Section: Discussionmentioning

confidence: 99%