Performance of Sclerodermus brevicornis, a parasitoid of invasive longhorn beetles, when reared on rice moth larvae
Articolo
Data di Pubblicazione:
2021
Citazione:
Performance of Sclerodermus brevicornis, a parasitoid of invasive longhorn beetles, when reared on rice moth larvae / M.K. Abdi, C. Jucker, B. De Marchi, I.C.W. Hardy, D. Lupi. - In: ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA. - ISSN 0013-8703. - 169:1(2021), pp. 64-78. [10.1111/eea.12946]
Abstract:
Biological control efficiency can be improved by developing effective mass-rearing systems to produce
large numbers of high-quality parasitoids. This study explored an alternative host for rearing
Sclerodermus brevicornis (Kieffer) (Hymenoptera: Bethylidae), a potential biocontrol agent for the
suppression of exotic and invasive wood-boring longhorn beetle (Coleoptera: Cerambycidae) populations
in the European agroforestry ecosystems. We tested larvae of the rice moth, Corcyra cephalonica
Stainton (Lepidoptera: Pyralidae), as host for the parasitoid.We quantified the probability and
timing of host attack and parasitism as well as reproductive success, offspring production, and the
characteristics of adult offspring. As S. brevicornis is a quasi-social species (multiple females, communally
produced offspring broods), we also explored the effects of varying the number of females to
which individual hosts were presented, with the aimof determining the optimal female-to-host ratio.
As time to host attack can be a limiting factor in S. brevicornis rearing protocols, we tested the use of
adult females of another bethylid species, Goniozus legneri Gordh, to paralyse C. cephalonica larvae
prior to presentation. We identified the conditions within our experiment that maximized offspring
production per host and offspring production per adult female parasitoid.We found that C. cephalonica
is suitable as a factitious host and, as it is considerably more straightforward for laboratory rearing
than cerambycid species, it is a good candidate for adoption by future S. brevicornis mass-rearing
and release programmes.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
factitious host; alternative host; parasitoid mass-rearing; lifehistory; biological control
efficiency; Hymenoptera; Bethylidae; Lepidoptera; Pyralidae; biocontrol agent; Coleoptera;
Cerambycidae; Sclerodermus brevicornis; longhorn beetle; rice moth
Elenco autori:
M.K. Abdi, C. Jucker, B. De Marchi, I.C.W. Hardy, D. Lupi
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