Water balance profiles, humidity preference and survival of two sympatric cockroach egg parasitoids Evania appendigaster and Aprostocetus hagenowii (Hymenoptera: Evaniidae; Eulophidae)

Tee, Hui-Siang; Lee, Chow‐Yang

doi:10.1016/j.jinsphys.2015.04.007

Cited by 11 publications

(5 citation statements)

References 74 publications

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“…Second, relative humidity (R.H.) was often ignored in these studies. When water or an aqueous solution is offered to parasitoids, water vapor dissipates into the immediate environment and increases the R.H. relative to a control that received no water or aqueous solution, and such R.H. divergences between treatment and control affect the parasitoid’s physiology 36,37 . The fact that P. vindemmiae females were able to feed directly on pure honey, which contains only 16–20% moisture 34 , indicates that this species can feed on other viscous sugar sources such as concentrated honeydew, plant secretions, and fruit juices in the field.…”

Section: Discussionmentioning

confidence: 99%

Water-Deprived Parasitic Wasps (Pachycrepoideus vindemmiae) Kill More Pupae of a Pest (Drosophila suzukii) as a Water-Intake Strategy

Silva

Price

Walton

2019

Sci Rep

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Most organisms must ingest water to compensate for dehydration. In parasitic wasps, the importance of water and the behaviors driving its consumption are poorly understood. Here, we describe a water-intake strategy of Pachycrepoideus vindemmiae , a parasitoid of spotted-wing drosophila (SWD, Drosophila suzukii ). Longevity measurements indicated that P. vindemmiae benefits from drinking water and from host-feeding on the water-rich hemolymph of SWD pupae. After exposing wasps to different water regimens, we observed increased host-feeding in water-deprived wasps despite honey availability. This resulted in greater SWD mortality because the host-feeding process killed the pupae, and because wasps that engaged in greater host-feeding parasitized more hosts. Behavioral observations showed that the host-feeding time of water-deprived wasps doubled compared to water-fed individuals. Host-feeding did not affect parasitoid offspring mortality. We conclude that P. vindemmiae benefits from ingesting water and that it host-feeds on SWD pupae as a water-intake strategy. These are interesting findings not only because water has rarely been reported as a critical nutrient for adult parasitoids, but especially because preying for the purpose of hydration is not a common strategy in nature. This strategy enhances parasitoid survival and reproduction, with positive consequences for its host-killing capacity and potential as a biocontrol agent.

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Section: Discussionmentioning

confidence: 99%

Water-Deprived Parasitic Wasps (Pachycrepoideus vindemmiae) Kill More Pupae of a Pest (Drosophila suzukii) as a Water-Intake Strategy

Silva

Price

Walton

2019

Sci Rep

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“…The authors in [ 47 ] have suggested that the aphid parasitoid Aphidius rhopalosiphi uses its sensilla as a hygroreceptor and, likewise, if A. mali can perceive humidity using its hygroreceptor, this may be responsible for its behavior towards water in the present study. Moreover, some parasitoids have shown a preference for humid environments, as they use humidity as a host habitat location cue [ 48 ]. The host of A. mali — E. lanigerum —absorbs the excess moisture from its food [ 26 ], which could create a humid area in the aphid colonies.…”

Section: Discussionmentioning

confidence: 99%

Honeydew Is a Food Source and a Contact Kairomone for Aphelinus mali

Peñalver‐Cruz¹,

Satour

Jaloux

et al. 2023

Insects

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Many parasitoids need to feed on sugar sources at the adult stage. Although nectar has been proven to be a source of higher nutritional quality compared to honeydew excreted by phloem feeders, the latter can provide the necessary carbohydrates for parasitoids and increase their longevity, fecundity and host searching time. Honeydew is not only a trophic resource for parasitoids, but it can also constitute an olfactory stimulus involved in host searching. In this study, we combined longevity measurements in the laboratory, olfactometry and feeding history inference of individuals caught in the field to test the hypothesis that honeydew excreted by the aphid Eriosoma lanigerum could serve as a trophic resource for its parasitoid Aphelinus mali as well as a kairomone used by the parasitoid to discover its hosts. Results indicate that honeydew increased longevity of A. mali females if water was provided. Water could be necessary to feed on this food source because of its viscosity and its coating by wax. The presence of honeydew allowed longer stinging events by A. mali on E. lanigerum. However, no preference towards honeydew was observed, when given the choice. The role of honeydew excreted by E. lanigerum on A. mali feeding and searching behavior to increase its efficiency as a biological control agent is discussed.

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“…and Evania sp. are more host-oriented (Klassen & Sharanowski 2014;Punzo 2005), with several physiological restrictions (Tee & Lee 2015), where the disturbance on vegetation structures around the epigeal level of oil palm plantations and the available piled wood-based microhabitats promoted the fluctuations in the abundances of host spiders (Bell et al 2001;Churchill 1997) and wood cockroaches (Horn & Hanula 2002), respectively. Ensign wasps of the family Evaniidae, although not a specific parasitoid of any known oil palm herbivorous pests, were found to be highly abundant within oil palm plantations as egg parasitoids of wood cockroaches (Bandung et al 2019).…”

Section: Discussionmentioning

confidence: 99%

Microhabitats Utilization by Solitary Parasitoids and Predatory Insects as Indicators of Oil Palm Agroecosystem’s Capacity to Support Insect Species Diversity

Bukhary¹,

Ruslan²,

Hisham³

et al. 2021

JSM

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Microhabitats capacity to support insect species diversity and persistence were evaluated implementing solitary parasitoids and predatory insects according to different phases of herbicide and chemical fertilizer applications. Two species of the genus Xanthopimpla (Ichneumonidae) and one species of the genus Pompilus (Pompilidae) showed relationships on vegetation-type microhabitats, notably natural weeds, leguminous cover crops, and the beneficial plant Turnera subulata, while two species of the genus Evania (Evaniidae) showed relationships with chipped oil palm trunks. One species from the genus Odontomachus (Formicidae) as an exclusive predatory ant was related to both chipped oil palm trunks and the beneficial plant T. subulata. Xanthopimpla parasitoids exhibited abundance fluctuations difference around natural weeds during herbicide application phases between three- and six-years old oil palm stands, with decreased and increased abundance patterns of the former and the latter, respectively. 18 years old oil palm stand showed increased abundance patterns only along with the different phases of chemical fertilizer applications. The importance of natural weeds diversity, restrictions of leguminous cover crops, frequency of herbicide applications, and the arrangements between beneficial plants and wood-based microhabitats that benefited insect parasitoids and predators were discussed.

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Water balance profiles, humidity preference and survival of two sympatric cockroach egg parasitoids Evania appendigaster and Aprostocetus hagenowii (Hymenoptera: Evaniidae; Eulophidae)

Cited by 11 publications

References 74 publications

Water-Deprived Parasitic Wasps (Pachycrepoideus vindemmiae) Kill More Pupae of a Pest (Drosophila suzukii) as a Water-Intake Strategy

Water-Deprived Parasitic Wasps (Pachycrepoideus vindemmiae) Kill More Pupae of a Pest (Drosophila suzukii) as a Water-Intake Strategy

Honeydew Is a Food Source and a Contact Kairomone for Aphelinus mali

Microhabitats Utilization by Solitary Parasitoids and Predatory Insects as Indicators of Oil Palm Agroecosystem’s Capacity to Support Insect Species Diversity

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