Effect of parasitism by &lt;i&gt;Aphidius eadyi&lt;/i&gt; (Hymenoptera Aphidiidae) on reproduction of pea aphid &lt;i&gt;Acyrthosiphon pisum&lt;/i&gt; (Hemiptera Aphididae)

He, Xiong Zhao; Wang, Q.; Teulon, D.A.J.

doi:10.30843/nzpp.2003.56.6040

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…Parasitoids that attack early‐instar aphids are likely to be more effective at reducing aphid populations than those that attack late‐instar aphids (Sequeira & Mackauer, ). He et al (, ) found that parasitism of early‐instar PA by A. eadyi prevented any reproduction and, when late instars and adults were parasitized, progeny were still produced but reproductive potential was lower than unparasitized aphids (Fig. ).…”

Section: Trophic Interactionsmentioning

confidence: 99%

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Biology and trophic interactions of lucerne aphids

Ryalls

Riegler

Moore

et al. 2013

Agri and Forest Entomology

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1 Lucerne or alfalfa Medicago sativa is the most important temperate forage legume worldwide. Only one or two varieties of lucerne were grown in the U.S.A. and Australia (the two leading exporters of lucerne) before the late 1950s and late 1970s, respectively. These dates coincided with the arrival of aphid species, which devastated lucerne stands and prompted the development of aphid resistant cultivars. 2 Lucerne-feeding aphids, including bluegreen aphids Acyrthosiphon kondoi , pea aphids Acyrthosiphon pisum, spotted alfalfa aphids Therioaphis trifolii maculata and cowpea aphids Aphis craccivora, however, still present significant risks for the lucerne industry worldwide and account for 25% of global production losses. Moreover, increased production costs, negative environmental effects and emerging aphid resistance to insecticide applications have led to a narrowing of management options against lucerne aphids. 3 Understanding lucerne aphid biology and trophic ecology will be needed to develop future management practices, including biological control. We review and synthesize research on the four lucerne aphid species, focussing on cultivar resistance and their interactions with other organisms, including predators, parasitoids, entomopathogens and bacterial symbionts. The effects of global climate change are considered, with a particular emphasis on the potential for compromised aphid resistance in lucerne cultivars under future climates. 4 We conclude by identifying future research questions and perspectives for the sustainable management of lucerne aphids. These include the characterization of plant secondary metabolites associated with natural enemy recruitment, an understanding of the role of endosymbionts in cultivar resistance and a better comprehension of multi-trophic interactions of lucerne aphids, both with other herbivores and higher trophic groups.

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Section: Trophic Interactionsmentioning

confidence: 99%

“…Aphid parasitism: P4 , parasitized fourth instar; P, parasitized adult; N, unparasitized adult. Data are the mean ± SE shown after He et al ().…”

Section: Trophic Interactionsmentioning

confidence: 99%

Biology and trophic interactions of lucerne aphids

Ryalls

Riegler

Moore

et al. 2013

Agri and Forest Entomology

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“…Aphids that received a single oviposition strike from the female parasitoid were removed and replaced with unparasitised individuals of the same age until 15 parasitised aphids were collected. Parasitised aphids were placed individually onto a bean plant, which was held in a transparent plastic cylinder (He et al 2003). There were 10 treatments (age classes) and 15 replicates (number of parasitised aphids) for each treatment in this study.…”

Section: Development and Reproductionmentioning

confidence: 99%

“…Many studies have reported that hymenopteran endoparasitoids can reduce the reproductive potential of aphids (Lui & Hughes 1984;Mackauer & Kambhampati 1984;Sequeira & Mackauer 1988;Tang & Yokomi 1996;He et al 2003;Lin & Ives 2003). The majority of these studies indicate that aphids parasitised in their early instars die before reproduction but those parasitised at later stages of development may reach the adult stage and produce a limited number of progeny before mummifi cation.…”

Section: Introductionmentioning

confidence: 99%

The effect of parasitism by <i>Aphidius ervi</i> on development and reproduction of the pea aphid <i>Acyrthosiphon pisum</i>

He¹,

Wang²,

Teulon³

2005

NZPP

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The effect of parasitism by Aphidius ervi Haliday (Hymenoptera Aphidiidae) on development survival and reproduction of pea aphid Acyrthosiphon pisum (Harris) (Hemiptera Aphididae) of different ages was studied in the laboratory Aphids parasitised when 1 and 2 days old (1st and 2nd instar) died at the 4th instar However those parasitised when 3 to 6 days old (3rd and 4th instar) could reach the adult stage following parasitism and those that were parasitised after 4 days old (late 3rd instar) were still able to produce progeny In comparison with the unparasitised aphids the parasitised aphids had a significantly shorter reproductive period and produced significantly fewer progeny and thus had significantly lower intrinsic rates of increase net reproductive rates shorter generation time and longer doubling time The potential impact of the parasitoid on host population growth is discussed

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Host stage preference and reproductive fitnessof Aphidius eadyi(Hymenoptera: Aphidiidae) onAcyrthosiphon pisum(Hemiptera: Aphididae)

Wang²,

Teulon

2005

New Zealand Journal of Agricultural Research

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Host stage preference by Aphidius eadyiStarý, González & Hall on pea aphid, Acyrthosiphon pisum (Harris), and its effects on the reproductive fitness of A. eadyi, were studied in the laboratory at 20 ± 1°C and RH 60-70% with a photoperiod of 16 h light: 8 h dark. Aphidius eadyi females accepted aphids of all stages but preferred fourth instar nymphs and adults for oviposition. Females developed increasingly faster with the increase of host stages, and males developed faster than females in all host stages. The sex ratio of resulting parasitoids was close to 1:1 from all host stages. The egg load and body size of A. eadyi progeny at emergence increased with increasing host stage at the time of parasitisation. The host stage had nonlinear relationships with the number of eggs laid and aphids parasitised by A. eadyi, and the body size of its resulting progeny. Both host stage and body size of resulting parasitoid progeny affected the egg load of newly emerged parasitoids but the latter had more effect. The fourth instar aphids appeared to be the most appropriate hosts for the mass-rearing programme because they gave the best fitness return for the parasitoids. The field release of parasitoids

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Effect of parasitism by <i>Aphidius eadyi</i> (Hymenoptera Aphidiidae) on reproduction of pea aphid <i>Acyrthosiphon pisum</i> (Hemiptera Aphididae)

Cited by 3 publications

References 9 publications

Biology and trophic interactions of lucerne aphids

Biology and trophic interactions of lucerne aphids

The effect of parasitism by <i>Aphidius ervi</i> on development and reproduction of the pea aphid <i>Acyrthosiphon pisum</i>

Host stage preference and reproductive fitnessof Aphidius eadyi(Hymenoptera: Aphidiidae) onAcyrthosiphon pisum(Hemiptera: Aphididae)

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