2021
DOI: 10.1002/ece3.8094
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Manduca sexta experience high parasitoid pressures in the field but minor fitness costs of consuming plant secondary compounds

Abstract: Coevolution between herbivorous insects and their host plants often mitigates their reciprocal (negative) fitness effects, resulting in rapid evolution of plant anti-herbivore defense and insect counter adaptations to these defenses (Ehrlich & Raven, 1964;Maron et al., 2019). Plants produce combinations of physical and chemical defenses that may lower herbivore fitness by reducing growth, disrupting development, decreasing survival, and/ or attracting natural enemies of herbivores (Furstenberg-Hagg

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“…M. sexta were weighed 1 week later and development time to the 4th instar was recorded. Other works examining induced plant defensive effects on lepidopteran performance/fitness indicate that caterpillars will either reach similar final weights but take longer to do so or take longer to develop and weigh less (Garvey et al, 2022; Jacobsen, 2021). Upon transitioning to the 4th instar, hemolymph samples were collected and assayed for PO and lysozyme‐like activity (Garvey et al, 2021).…”
Section: Methodsmentioning
confidence: 99%
“…M. sexta were weighed 1 week later and development time to the 4th instar was recorded. Other works examining induced plant defensive effects on lepidopteran performance/fitness indicate that caterpillars will either reach similar final weights but take longer to do so or take longer to develop and weigh less (Garvey et al, 2022; Jacobsen, 2021). Upon transitioning to the 4th instar, hemolymph samples were collected and assayed for PO and lysozyme‐like activity (Garvey et al, 2021).…”
Section: Methodsmentioning
confidence: 99%