Comparison of lepidopteran pest populations and their parasitoids in three vegetable brassicas

Beck, N. G.; Cameron, P. J.

doi:10.30843/nzpp.1990.43.10931

Cited by 12 publications

(9 citation statements)

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“…Factors for the higher attractiveness of peas, as suggested in our second hypothesis, are supported by published papers that report an influence of host plants on parasitism levels of P. xylostella. Beck & Cameron (1990) related different levels of parasitism by Diadegma semiclausum (Hellén) and Diadromus collaris (Gravenhorst) (both Hymenoptera: Ichneumonidae) on three vegetable brassicas to the accessibility of the host larvae to parasitoids. Broccoli, showing the highest parasitism rates, does not form heads like cabbage, thus the leaves provide less shelter for the larvae compared to leaves tightly attached to the head.…”

Section: Discussionmentioning

confidence: 99%

Host shift to peas in the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae) and response of its parasitoid Diadegma mollipla (Hymenoptera: Ichneumonidae)

Rossbach

Löhr

Vidal

2006

Bull. Entomol. Res.

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Host shifts in herbivorous insects are thought to sometimes provide enemy-free space on the novel host plant. A population of the diamondback moth Plutella xylostella (Linnaeus), an oligophagous pest on crucifers, recently shifted to sugar snap- and snowpeas (Pisum sativum) in Kenya, resulting in heavy damage to these crops. The impact of this host shift on the interaction with Diadegma mollipla (Holmgren), one of the most frequent parasitoid species attacking P. xylostella in this area, was investigated. Parasitism rates and development of two strains of D. mollipla, one reared from a cabbage-feeding strain of P. xylostella and the second from the new pea-feeding strain, changed based on the host-plant that P. xylostella fed upon, with both parasitoid strains more effective on the novel host plant. Parasitism by the cabbage-D. mollipla strain on P. xylostella infesting peas was four times higher than on P. xylostella infesting cabbage when a single plant species was present. However, when both crops were offered together, the level of parasitism dropped to the level seen when cabbage was offered alone. Diadegma mollipla developed on both hosts, but cabbage-D. mollipla had a longer total development time. Pupae of cabbage-feeding P. xylostella were significantly heavier than pupae of pea-feeding P. xylostella and parasitism had no influence on these differences. Diadegma mollipla preferred to parasitize the pea-feeding P. xylostella. Thus, the host shift by P. xylostella to a novel host plant did not necessarily provide enemy-free space, with the parasitoid species tested. The implications of these findings for the host-parasitoid relationship are discussed.

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Section: Discussionmentioning

confidence: 99%

Host shift to peas in the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae) and response of its parasitoid Diadegma mollipla (Hymenoptera: Ichneumonidae)

Rossbach

Löhr

Vidal

2006

Bull. Entomol. Res.

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“…Ichneumonidae), a pre-pupal and pupal endoparasioid (Liu et al, 2001;Sarfraz et al, 2005) that has been released in Australia (Goodwin, 1979), New Zealand, Barbados (Beck and Cameron, 1990), St. Helena (Kfir, 2005), Malaysia (Grzywacz et al, 2010), and Thailand (Rowell et al, 2005) for biological control of diamondback moth (Sarfraz et al, 2005). By providing current baseline data, new management strategies can be implemented in a modern day context.…”

Section: Future Directionsmentioning

confidence: 99%

The Biology and Ecology of the Diamondback Moth, Plutella xylostella (L.) in Eastern Ontario Revisited

Dancau¹

2018

Preprint

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Diamondback moth, Plutella xylostella Linnaeus (Lepidoptera: Plutellidae) is a globally distributed pest on brassicaceous crops. This study aimed to follow up with aspects of earlier research, mainly to revisit the potential for overwintering of diamondback moth in the Ottawa area, to investigate present day population dynamics using a life-table approach and to use next generation sequencing to describe the diamondback moth microbiome. A review of the literature has reaffirmed that diamondback moth may not be capable of overwintering in Ottawa with populations likely migrant-driven. The population dynamics and parasitoid community appear to be unaltered after 65 years. The microbiome of diamondback moth larvae was dominated by Enterococcaceae, a family of bacteria hypothesized to aid in resistance and detoxification. This can provide opportunities for the introduction of new biological control agents and tools for diamondback moth management in the future.

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“…Parasitoid fitness is also a function of percent parasitism. The percentage of herbivore hosts parasitized by a parasitoid may differ when hosts are on different plant species or varieties (Beck & Cameron, 1990; Rajapakse et al., 1991; Souissi & Le Rü, 1998; Hoballah et al., 2002; Liu & Jiang, 2003; Barbosa & Caldas, 2004; Braman et al., 2004; Helms et al., 2004; Medina et al., 2005).…”

Section: Introductionmentioning

confidence: 99%

The role of host plant species in the phenotypic differentiation of sympatric populations of Aleiodes nolophanae and Cotesia marginiventris

Medina

Barbosa

2008

Entomologia Exp Applicata

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The ecology of parasitoids is strongly influenced by their host plant species. Parasitoid fitness can be affected by a variety of plant traits that could promote phenotypic differentiation among populations of parasitoids. Generalist parasitoids are expected to be more affected by plant traits (e.g., plant defensive traits) than specialist parasitoids. Data are presented on phenotypic differences of two braconid parasitoid wasps ovipositing on the same insect host species on two different host plant species. Adult mass, adult longevity, and percent parasitism are compared for the generalist parasitoid Cotesia marginiventris Cresson and the specialist parasitoid Aleiodes nolophanae Ashmead (both Hymenoptera: Braconidae) emerging from green cloverworms, Hypena scabra Fabricius (Lepidoptera: Noctuidae), feeding on two host plant species, alfalfa ( Medicago sativa L.) and soybean ( Glycine max L. Merr.) (both Fabaceae), at three locations. Specialist wasps that parasitized the green cloverworm on alfalfa had a significantly larger mass than the ones that parasitized the green cloverworm on soybean at the three study sites. Generalist wasps that parasitized green cloverworms on alfalfa had a larger mass than wasps parasitizing green cloverworms on soybean only at one of the study sites (i.e

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Comparison of lepidopteran pest populations and their parasitoids in three vegetable brassicas

Cited by 12 publications

References 0 publications

Host shift to peas in the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae) and response of its parasitoid Diadegma mollipla (Hymenoptera: Ichneumonidae)

Host shift to peas in the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae) and response of its parasitoid Diadegma mollipla (Hymenoptera: Ichneumonidae)

The Biology and Ecology of the Diamondback Moth, Plutella xylostella (L.) in Eastern Ontario Revisited

The role of host plant species in the phenotypic differentiation of sympatric populations of Aleiodes nolophanae and Cotesia marginiventris

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