Effects of Dietary Components on Fecundity of the Parasitoid<i>Exeristes comstockii</i>(Cress.) (Hymenoptera: Ichneumonidae)

Bracken, G. K.

doi:10.4039/ent971037-10

Cited by 32 publications

(18 citation statements)

References 14 publications

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“…Host-feeding meals can consist of egg contents, larval haemolymph or tissues, or pupal contents (depending on the host stage attacked), all of which are rich in protein, essential vitamins, and salts (Bracken, 1965(Bracken, , 1966. Parasitoids that host feed on insect eggs primarily consume vitellogenins (Berry, I 985), which are composed mainly of protein, but may also contain some carbohydrates and lipids (Woodring, 1985).…”

Section: Physiology Of Host Feedingmentioning

confidence: 99%

“…Some researchers have used physical barriers to decouple the opportunity for oviposition and host feeding (Leius, 1961(Leius, a, b, 1967Bracken, 1965;Sandlan, 1979;House, 1980;Wardle & Borden, 1990). The most direct way to demonstrate an effect of host feeding on fecundity is to compare the fecundity of females that are allowed to host feed with the fecundity of females that are not allowed to host feed.…”

Section: ( I ) Benefitsmentioning

confidence: 99%

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The Evolution of Host‐feeding Behaviour in Insect Parasitoids

1996

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Section: Physiology Of Host Feedingmentioning

confidence: 99%

Section: ( I ) Benefitsmentioning

confidence: 99%

The Evolution of Host‐feeding Behaviour in Insect Parasitoids

1996

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“…From such foodstuff, for instance, adult female E. comstockii must obtain protein, certain vitamins, and inorganic salts for normal fecundity (Bracken 1965a). From such foodstuff, for instance, adult female E. comstockii must obtain protein, certain vitamins, and inorganic salts for normal fecundity (Bracken 1965a).…”

Section: The Principle Of Cooperating Supplementsmentioning

confidence: 99%

Predatory Behavior of Philodromus rufus Walckenaer (Araneae: Thomisidae)

1966

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Can. Ent. 98: 1121-1134 (1966) The role that nutrition plays in biological control may be seen in natural environments; but t o understand and to make use of this role the principles concerned must be understood essentially in tcrms of specific chemical substances.A number of principles of insect nutrition particularly relevant t o hiologica1 control concern the food of the host, the host itself, and in p;trasitoid. These principles may be generalized into three Ila\vs and they are called herc the rille of sameness, the principle of nutrient proport ionalinr, and the principle of cooperating supplements. Each is discussed in connection with its application in the laboratory or in natural environments, and a few examples of wtak relaring to each are given.Most examples quoted are from work at Belleville, Ontario, on thc parasitoid Pseudosarcoph.aga afinis Auct. nec. Fallkn.

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“…they emerge with less than their lifetime supply of eggs but, given host meals, are able to mature eggs throughout their life. Host-feeding apparently supplies nutrients necessary for continued egg production, probably amino acids, salts and/or vitamins (Bracken 1965(Bracken , 1966. In many parasitoid species, host-feeding also causes the death of the host, rendering it unsuitable for oviposition (Jervis & Kidd 1986).…”

Section: Introductionmentioning

confidence: 98%

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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Effects of Dietary Components on Fecundity of the ParasitoidExeristes comstockii(Cress.) (Hymenoptera: Ichneumonidae)

Cited by 32 publications

References 14 publications

The Evolution of Host‐feeding Behaviour in Insect Parasitoids

The Evolution of Host‐feeding Behaviour in Insect Parasitoids

Predatory Behavior of Philodromus rufus Walckenaer (Araneae: Thomisidae)

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

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