Patterns in the Host-Feeding Habit of Adult Parasitic Hymenoptera1

Bartlett, B. R.

doi:10.1093/aesa/57.3.344

Cited by 60 publications

(32 citation statements)

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“…The presence in diverse systems of more nectar sources than in simple systems may indeed favor within-patch success of many enemies, as predicted by the enemies hypothesis. However, host feeding is often essential for adult parasitoids (Bartlett 1964, Sandlan 1979 and may account for a significant proportion (Van Driesche 1983) or even a majority (DeBach 1943) of parasite-inflicted mortality for some host species. For both specialist and generalist parasitoids, tenure time in patches may depend in some cases on availability of acceptable prey for feeding rather than on availability of nectar.…”

Section: Mechanisms Of Specialist Enemy Concentrationmentioning

confidence: 99%

Response by Specialist and Generalist Natural Enemies to Agroecosystem Diversification: A Selective Review

Sheehan¹

1986

Environmental Entomology

178

112

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Section: Mechanisms Of Specialist Enemy Concentrationmentioning

confidence: 99%

Response by Specialist and Generalist Natural Enemies to Agroecosystem Diversification: A Selective Review

Sheehan¹

1986

Environmental Entomology

178

112

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“…Host-feeding is intimately connected with reproduction (Flanders 1935;Bartlett 1964;Jervis & Kidd 1986). Parasitoids that host-feed are 'synovigenic', i.e.…”

Section: Introductionmentioning

confidence: 99%

Egg Load and the Decision to Host-Feed in the Parasitoid, Aphytis melinus

Collier¹,

Murdoch²,

Nisbet³

1994

The Journal of Animal Ecology

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. British Ecological Society is collaborating with JSTOR to digitize, preserve and extend access to Journal of Animal Ecology. Summary 1. We make and test predictions about how the number of eggs a female parasitoid is carrying (her 'egg load') influences her propensity for 'host-feeding', the consumption of host body fluids. 2. We first develop a simple dynamic state variable model that predicts that parasitoids should host-feed only when completely empty of eggs. This result reflects an important assumption of the simple model, namely the absence of a delay between host-feeding and the maturation of eggs. 3. We therefore develop two additional models that incorporate a delay by adding extra 'pre-egg' state variables to the simple model. Adding even a short delay makes possible a non-zero threshold egg number at and below which the parasitoid host-feeds. 4. We then compare the results of the models with behavioural observations of hostfeeding by Aphytis melinus DeBach (Hymenoptera: Aphelinidae). 5. As predicted by the models with an egg-maturation delay, host-feeding was associated with low, but non-zero egg loads. Aphytis host-fed at egg numbers ranging from 0 to 5 (mean: 2 0). 6. There was no clear single threshold egg number at host-feeding; the fraction of Aphytis host-feeding declined monotonically with increasing egg loads.Key-words: Aphytis melinus, dynamic state variable models, egg load, host-feeding, parasitoid oviposition behaviour.

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“…It has been demonstrated that host feeding is nearly ubiquitous in some genera such as Tetrastichus (Bartlett, 1964). As L. clerkella is attacked by two Tetrastichus species (Adachi, 1998), the leafminer is certainly affected by host feeding.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of generational percent parasitism on Lyonetia clerkella (Lepidoptera: Lyonetiidae) larvae in peach orchards under different management intensity.

Adachi

2002

Appl. Entomol. Zool.

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Abundance of live, dead and parasitized larvae of the peach leafminer, Lyonetia clerkella (Linnaeus), was investigated at 2 or 3-day intervals from April to November 1994 and April to October 1995. The proportions of infested leaves were determined by a binomial sampling in peach orchards under different management intensities, and subsequently the infested leaves were sampled to ascertain the fate of each leafminer through individual rearing in the laboratory. The seasonal prevalence showed seven discrete generations in both years. The number of larvae entering each generation was estimated by a stage-frequency analysis. From that estimate, as well as from an estimate of the number of parasitized larvae, the generational percent parasitism was determined for each generation and throughout the year. The yearly result was about 9% parasitism in the insecticide-sprayed orchards and about 19% in the unsprayed orchards. The relationship between host and parasitoid densities in successive generations showed a tendency toward counterclockwise rotation. Furthermore, the relationship between host density and percent parasitism exhibited a delayed density-dependent process in a host-parasitoid system.

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Patterns in the Host-Feeding Habit of Adult Parasitic Hymenoptera1

Cited by 60 publications

References 0 publications

Response by Specialist and Generalist Natural Enemies to Agroecosystem Diversification: A Selective Review

Response by Specialist and Generalist Natural Enemies to Agroecosystem Diversification: A Selective Review

Egg Load and the Decision to Host-Feed in the Parasitoid, Aphytis melinus

Evaluation of generational percent parasitism on Lyonetia clerkella (Lepidoptera: Lyonetiidae) larvae in peach orchards under different management intensity.

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