The parasite complex of the two seed beetles <i>Bruchidius ater</i> (Marsham) (Coleoptera: Bruchidae) and <i>Apion fuscirostre</i> Fabricius (Coleoptera: Curculionidae)*

Parnell, J. R.

doi:10.1111/j.1365-2311.1964.tb00825.x

Cited by 17 publications

(8 citation statements)

References 8 publications

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“…The pupae ( fig. 26) are similar to those described for other species of Apion (Parnell, 1964;Maldwyn Davies, 1928). Newly emergent adults had only to break through the thin cap of tissue closing the tunnel left by the last instar larva.…”

Section: Methodssupporting

confidence: 83%

“…However, larvae were never found acting as hyperparasites on larvae of their own species, as does Habrocytus sequester (Walker) (Parnell, 1964). All the parasites investigated killed their hosts when the latter were fully fed larvae or pupae.…”

Section: Chlorocytus Sppmentioning

confidence: 93%

“…Ectophagous larvae were found as primary parasites and secondary parasites (hyperparasites), and supernumerary eggs were sometimes laid in each case. However, larvae were never found acting as hyperparasites on larvae of their own species, as does Habrocytus sequester (Walker) (Parnell, 1964).…”

Section: Chlorocytus Sppmentioning

confidence: 99%

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The biology and taxonomy of some chalcidoid parasites (Hymenoptera) of stem‐living larvae of Apion (Coleoptera: Curculionidae)

Fisher

1970

Transactions of the Royal Entomological Society of London

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Section: Methodssupporting

confidence: 83%

Section: Chlorocytus Sppmentioning

confidence: 93%

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The biology and taxonomy of some chalcidoid parasites (Hymenoptera) of stem‐living larvae of Apion (Coleoptera: Curculionidae)

Fisher

1970

Transactions of the Royal Entomological Society of London

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“…The Scotch broom seed weevil is host to an ectoparasitoid (Pteromalus sequester Walker). This wasp is the dominant parasitoid attacking the weevil in Europe (Parnell 1964) and North America (Coombs and Pitcairn 2004). It overwinters as an adult and attacks the mature larval and pupal stages of the weevil (Parnell 1964).…”

Section: Methodsmentioning

confidence: 99%

Integrated Management of Scotch Broom (Cytisus scoparius) Using Biological Control

Herrera-Reddy

Carruthers

Mills

2012

Invasive plant sci. manag.

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Integrated weed management strategies (IWM) are being advocated and employed to control invasive plants species. In this study, we compared three management strategies (biological control alone [BC], BC with fire [BC + F], and BC with mowing [BC + M]) to determine if physical controls reduce seed production by Scotch broom and interfere with the action of the biological control agent—the Scotch broom seed weevil. We measured seed production and seed predation by the weevil at both pod and plant scale, and seed bank density over two field seasons. We found no difference in the number of seeds per pod among management strategies. However, combining management strategies (BC + M and BC + F) resulted in significant reductions in pods per plant, mature seeds per plant, and seed bank density relative to biological control alone. We did not find differences among management strategies in number of weevils per pod or proportion of seeds predated by the weevil at either pod or whole-plant scale. However, combining management strategies (BC + M and BC + F) resulted in a significant reduction in healthy mature seeds per plant relative to biological control alone. Although both integrated strategies outperformed biological control alone in reducing seed production and the seed bank, with no statistical difference between them, we propose that short-rotation prescribed fire could prove to be a more effective strategy for long-term management of Scotch broom due to its potential for slightly greater depletion of the seed bank.

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“…(Braconidae), (b) ectoparasitoids, such as Dinarmus acutus (Thomson) (Chalcidoidea, Pteromalidae) and (c) egg-parasitoids (Trichogrammatidae). The members of the first and third subguilds parasitise the host's eggs (Parnell 1964;Charlet 2002), whereas those of the second parasitise late larval/ prepupal stages through the pod wall (Leong and Dickason 1975).…”

Section: The Community Modulementioning

confidence: 99%

Aphid infestation promotes survival of a seed predator: observations and experiments on a tritrophic community module

Szentesi

Schmera

2011

Arthropod-Plant Interactions

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We investigated whether aphid presence and abundance influence the survival of an endophagous predispersal seed predator of the same host plant. We studied a terrestrial community module consisting of one plant (Laburnum anagyroides) and four insect species/groups (an aphid, Aphis cytisorum, a pre-dispersal seed predator bruchid, Bruchidius villosus, aphid-attending ant species, and parasitoids of the bruchid). Two complementary investigations were carried out in parallel: (a) a plant-aphid-ant complex was experimentally manipulated by excluding aphids, ants, or both for 5 years to assess their impacts on the seed predator's survival and parasitism rate; and (b) different aphid infestation levels on randomly selected infructescences were correlated with plant traits, nutrient allocation pattern, and variables of seed predator's survival, such as the number of eggs laid and adults emerged influenced by parasitoid activity, for 7 years. We found that ants did not affect bruchid oviposition negatively, but egg-parasitism was significantly decreased by their presence. Plant traits, such as the number of seeds and seed mass, as well as seed predator performance were negatively affected by heavy aphid infestation. Seed predator -infested seeds had no effect on the mass of remaining seeds in the pods. This study suggests that aphids were nevertheless promoting bruchid abundance and survival, depending on their infestation rate.

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The parasite complex of the two seed beetles Bruchidius ater (Marsham) (Coleoptera: Bruchidae) and Apion fuscirostre Fabricius (Coleoptera: Curculionidae)*

Cited by 17 publications

References 8 publications

The biology and taxonomy of some chalcidoid parasites (Hymenoptera) of stem‐living larvae of Apion (Coleoptera: Curculionidae)

The biology and taxonomy of some chalcidoid parasites (Hymenoptera) of stem‐living larvae of Apion (Coleoptera: Curculionidae)

Integrated Management of Scotch Broom (Cytisus scoparius) Using Biological Control

Aphid infestation promotes survival of a seed predator: observations and experiments on a tritrophic community module

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