Nonreproductive effects are more important than reproductive effects in a host feeding parasitoid
Ver/Abrir
Autor/a
Zhang, Yibo
Tian, Xiaocao
Wang, Hao
Arnó, Judit
Wu, Suran
Xian, Xiaoqing
Liu, Wanxue
Desneux, Nicolas
Wan, Fanghao
Zhang, Guifen
Fecha de publicación
2022-07-06ISBN
2045-2322
Resumen
When female host feeding parasitoids encounter a potential host, they face a complicated trade-off between either laying an egg for investing in current reproduction or feeding on or killing the host for future reproduction. Few studies have measured these behavioral shift patterns in a given host-parasitoid association thus far. We systematically assessed the behavioral shifts and life history traits of a host feeding parasitoid, Necremnus tutae, on different instars of its host Tuta absoluta. N. tutae females, as idiobiont host feeding parasitoids, can act on the 1st–4th instar larvae of T. absoluta by either host feeding, parasitizing or host killing. Moreover, a significant behavioral shift was observed on different instar hosts. N. tutae preferred to feed on the young hosts (1st and 2nd instars), lay eggs on middle-aged hosts (3rd instars) and kill old hosts (4th instars) by ovipositor-mediated stinging. The offspring of N. tutae showed a significant female-biased sex ratio, with the number of instars of T. absoluta larvae that were parasitized increasing. Specifically, nonreproductive host mortality induced by host feeding and host killing accounted for high percentages of the total mortality (ranging from 70% on 3rd instar hosts to 88% on 1st instar and 4th instar hosts). We hypothesize that N. tutae could be not merely a parasitoid but also a predator. Our results shed light on the nonreproductive abilities of a host feeding parasitoid that should be given further attention, especially when evaluating the efficacy of parasitoids.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
Inglés
Materias (CDU)
632 - Enfermedades y protección de las plantas
Páginas
10
Publicado por
Nature
Publicado en
Scientific Reports
Citación
Zhang Yibo, Xiaocao Tian, Hao Wang, Cristina Castañé, Judit Arnó, Suran Wu, and Xiaoqing Xian et al. 2022. "Nonreproductive Effects Are More Important Than Reproductive Effects In A Host Feeding Parasitoid". Scientific Reports 12 (1): 1-10. https://www.nature.com/articles/s41598-022-15296-2.
Program
Protecció Vegetal Sostenible
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