Qualidade de diferentes espécies de pulgões como hospedeiros do parasitóide Aphidius ervi Haliday (Hymenoptera: Braconidae: Aphidiinae)

Sidney, Lívia Alvarenga; Bueno, Vanda Helena Paes; Lins, Juracy Caldeira; Silva, Diego Bastos; Sampaio, Marcus Vinícius

doi:10.1590/s1519-566x2010000500006

Cited by 12 publications

(16 citation statements)

References 12 publications

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“…By comparing the number of adults that emerged in the multiple parasitism experiment with the estimated values calculated in the single parasitism study, it is apparent that P. volucre has considerable potential for reducing the A. ervi population, but not vice versa. The potential of the two species for the biological control of M. euphorbiae has been demonstrated in previous studies, using similar methodology, in which the incidence of parasitism by P. volucre was 54% , whereas that by A. ervi was 74% (Sidney et al 2010). These studies have now been expanded by investigating the combined use of these two parasitoids and, as the results demonstrate, P. volucre was intrinsically superior to A. ervi.…”

Section: Discussionmentioning

confidence: 61%

“…These two species have considerable preference for aphids of the tribe Macrosiphini, including the species Macrosiphum euphorbiae (Thomas) (Mackauer et al 1992, Starý et al 2007). The potential of A. ervi and P. volucre for the control of M. euphorbiae has been demonstrated under experimental laboratory conditions , Sidney et al 2010. Currently, A. ervi and P. volucre are the only parasitoids of M. euphorbiae in Brazil and represent important tools for the biological control of the aphid pest (Starý et al 2007).…”

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confidence: 99%

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Larval Competition BetweenAphidius erviandPraon volucre(Hymenoptera: Braconidae: Aphidiinae) inMacrosiphum euphorbiae(Hemiptera: Aphididae)

et al. 2010

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Interspecific competition between parasitoid larvae may influence the size, structure, and stability of the population, leading to a reduction in total parasitism and thus restricting the pest control. Aphidius ervi (Haliday) and Praon volucre (Haliday) are endoparasitoids that possess a wide host range and present considerable potential for the biological control of the aphid Macrosiphum euphorbiae (Thomas). The larval competition between A. ervi and P. volucre, and the possible intrinsic competitive superiority of one of the parasitoids in M. euphorbiae, have been studied. In single parasitism experiments, mated parasitoid females (n=10) were maintained individually in contact with M. euphorbiae hosts (n=30) inside petri dishes containing lettuce leaf discs and maintained in environmental chamber at 22 ± 1°C, 70 ± 10% RH, and 12-h photophase. The multiple parasitism experiments consisted of exposing single parasitized aphids (n=120) to the second parasitoid species. Two oviposition events were performed with a 4-h interval between them, namely the following: sequence A (oviposition by A. ervi, followed by P. volucre) and sequence B (oviposition by P. volucre, followed by A. ervi). Oviposition sequence A generated 24 A. ervi and 55 P. volucre adults, whereas oviposition sequence B generated 23 and 49 adults. P. volucre is an intrinsically superior competitor compared with A. ervi, and the use of the two species simultaneously may result in competitive exclusion and influence the stability of the parasitoid population.

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Section: Discussionmentioning

confidence: 61%

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confidence: 99%

Larval Competition BetweenAphidius erviandPraon volucre(Hymenoptera: Braconidae: Aphidiinae) inMacrosiphum euphorbiae(Hemiptera: Aphididae)

et al. 2010

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“…This was particularly true for aphid biotypes that were not originally raised on potato (PEP and AUB biotypes), which seemed to have more difficulty adapting and exploiting this host plant than the native potato biotype (POT biotype) (Flores‐Mejia et al ., ). In comparison, the NGP p confirmed the generalist nature (Sidney et al ., ) of the parasitoid wasp A. ervi , as it was capable of outperforming the herbivore regardless of the aphid biotype on the three host plants. Although this may be beneficial to the plant in the short term, an increased top‐down pressure (from the parasitoid) will contribute to the progressive instability of the system (Binzer et al ., ) as the parasitoid should become extinct once it has exploited all the herbivores in the system.…”

Section: Discussionmentioning

confidence: 94%

“…pest aphid population is still small (Sequeira & Mackauer, 1994;He et al, 2005;Sidney et al, 2010). At this point, even a few female aphids can build up a large colony (higher NGP h ) that can severely stress a young and slow-growing plant (lower mRGR rate) and could potentially limit subsequent plant performance (Flynn et al, 2006;Schuster, 2006), as high NGP h paired with low mRGR gives a high 3t index.…”

Section: Discussionmentioning

confidence: 99%

The influence of a parasitoid's response to temperature on the performance of a tri‐trophic food web

Flores-Mejia

Guay

Fournier

et al. 2016

Ecological Entomology

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1. Food web interactions are complex and can respond to environmental changes in unpredictable ways that do not necessarily equate to the individual responses of each of the components of the food web. 2. Biomass can be used to evaluate the productivity of the three individual trophic levels, in the form of the Net Generational Productivity (NGP) and the performance of the entire food web with the newly developed tri‐trophic food web performance ratio (ϕ3t). 3. These parameters were used to evaluate the performance of nine plant‐based tri‐trophic food webs composed of: potato, Solanum tuberosum L. and two cultivars of bell pepper Capsicum annuum L; three biotypes of the aphid Macrosiphum euphorbiae Thomas (Hemiptera: Aphididae) and the parasitoid wasp Aphidius ervi (Haliday) (Hymenoptera: Braconidae). 4. The NGP showed that the thermal window for biomass productivity for each trophic level is different and is reduced by approximately 4 °C with respect to the inferior level. Aphidius ervi had the smallest thermal window for biomass productivity and development. 5. The present results showed that the performance (ϕ3t) of the tested food webs is influenced in a top‐down fashion, where the intra‐specific variation of the food web, namely the host plant, played a major role in the productivity of each of the subsequent trophic levels. 6. The ϕ3t suggested that exposure to high and low temperatures might severely affect the effectiveness of A. ervi as a biocontrol agent of the aphid M. euphorbiae in bell pepper and potato crops.

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“…Host quality is known to impact an array of life history traits including development time, adult size, fecundity, longevity and offspring sex ratio (e.g. Harvey et al, 2004;Ris et al, 2004;Colinet et al, 2005;Silva et al, 2008;Xu et al, 2008;Sidney et al, 2010;Kishani Farahani et al, 2016). However, how the host affects the physiological thermal tolerance of a generalist parasitoid is unknown.…”

Section: Introductionmentioning

confidence: 99%

Why is there no impact of the host species on the cold tolerance of a generalist parasitoid?

Alford

Farahani

Pierre

et al. 2017

Journal of Insect Physiology

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For generalist parasitoids such as those belonging to the Genus Aphidius, the choice of host species can have profound implications for the emerging parasitoid. Host species is known to affect a variety of life history traits. However, the impact of the host on thermal tolerance has never been studied. Physiological thermal tolerance, enabling survival at unfavourable temperatures, is not a fixed trait and may be influenced by a number of external factors including characteristics of the stress, of the individual exposed to the stress, and of the biological and physical environment. As such, the choice of host species is likely to also have implications for the thermal tolerance of the emerging parasitoid. The current study aimed to investigate the effect of cereal aphid host species (Sitobion avenae, Rhopalosiphum padi and Metopolophium dirhodum) on adult thermal tolerance, in addition to sex and size, of the aphid parasitoids Aphidius avenae, Aphidius matricariae and Aphidius rhopalosiphi. Results revealed no effect of host species on the cold tolerance of the emerging parasitoid, as determined by CT and Chill Coma, for all parasitoid species. Host species significantly affected the size of the emerging parasitoid for A. rhopalosiphi only, with individuals emerging from R. padi being significantly larger than those emerging from S. avenae, although this did not correspond to a difference in thermal tolerance. Furthermore, a significant difference in the size of male and female parasitoids was observed for A. avenae and A. matricariae, although, once again this did not correspond to a difference in cold tolerance. It is suggested that potential behavioural thermoregulation via host manipulation may act to influence the thermal environment experienced by the wasp and thus wasp thermal tolerance and, in doing so, may negate physiological thermal tolerance or any impact of the aphid host.

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Qualidade de diferentes espécies de pulgões como hospedeiros do parasitóide Aphidius ervi Haliday (Hymenoptera: Braconidae: Aphidiinae)

Cited by 12 publications

References 12 publications

Larval Competition BetweenAphidius erviandPraon volucre(Hymenoptera: Braconidae: Aphidiinae) inMacrosiphum euphorbiae(Hemiptera: Aphididae)

Larval Competition BetweenAphidius erviandPraon volucre(Hymenoptera: Braconidae: Aphidiinae) inMacrosiphum euphorbiae(Hemiptera: Aphididae)

The influence of a parasitoid's response to temperature on the performance of a tri‐trophic food web

Why is there no impact of the host species on the cold tolerance of a generalist parasitoid?

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