Responses of Episyrphus balteatus DeGeer (Diptera: Syrphidae) in relation to prey density and predator size

Amiri-Jami, Alireza; Namaghi, Hussein Sadeghi

doi:10.1016/j.aspen.2014.01.007

Cited by 17 publications

(4 citation statements)

References 31 publications

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“…The observed density-dependent numerical responses of A. biannulipes females suggest this predator could be an efficient biological control agent of D. porcellus. Predators displaying strong density-dependent reproduction rates are considered as promising biocontrol agents (Milonas et al, 2015), through their capacity to suppress pest populations before they reach damaging levels (Amiri-Jami & Sadeghi-Namaghi, 2014).…”

Section: Discussionmentioning

confidence: 99%

Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae)

Loko

Toffa

Gavoedo

et al. 2022

JoBAZ

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Background Alloeocranum biannulipes Montr. and Sign.(Hemiptera: Reduviidae) is a predator present in stored yam chips and a promising biological control agent against Dinoderus porcellus Lesne (Coleoptera: Bostrichidae). Numerical responses of A. biannulipes to different densities (1, 2, 4, 6, and 8) of D. porcellus larvae were evaluated under ambient laboratory conditions (T°: 25 ± 2 °C; RH: 75–80%; photoperiod 12:12 h (L/D)). The number of consumed prey, duration of pre-oviposition and oviposition, number of eggs laid, pre-imaginal development times and mortality rate of the predator were recorded. Results The results revealed that A. biannulipes females preying on the highest larval density of D. porcellus (8) presented the highest predation rate (4.34 ± 0.18 larvae/predator/day), shortest pre-oviposition period (11.01 ± 0.57 days) and the highest oviposition period (15.83 ± 1.02 days). The daily number of eggs laid by A. biannulipes female (y) as a function of the number of D. porcellus larvae consumed (x) was modelled by the equation y = 0.158x2 – 0.4073x + 3.8151 (R2 = 0.571). The efficiency of prey conversion into eggs of A. biannulipes females decreased with increased prey density. The prey density did not affect the hatching rate of A. biannulipes eggs and the pre-imaginal development times. However, A. biannulipes nymphs fed with more (2 to 8) D. porcellus showed a significantly higher survival rate than those fed with a single larva. Conclusions The positive numerical response of A. biannulipes suggests that this predator could play a key role in biological control program against D. porcellus.

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Section: Discussionmentioning

confidence: 99%

Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae)

Loko

Toffa

Gavoedo

et al. 2022

JoBAZ

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“…septumpunctata varies significantly in season 2011. Syrphid flies are efficient predators of aphids and exponentially decrease their population [61, 62]. The relationship between predators and prey densities has been a central theme in ecological theories [63, 64].…”

Section: Discussionmentioning

confidence: 99%

Spatio-temporal variations in wheat aphid populations and their natural enemies in four agro-ecological zones of Pakistan

et al. 2019

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Aphids are major pests of wheat crop in Pakistan inflicting considerable economic losses. A better knowledge of landscape scale spatial distribution of aphids and their natural enemies could be used to improve integrated pest management programs. Therefore, the present study aimed to document spatio-temporal variations in populations of wheat aphids and their natural enemies in Pakistan. The 2-year survey study was carried out at ten experimental farms located in five districts of four contrasted agro-ecological zones of eastern Pakistan (Punjab area) i.e. District Chakwal in arid zone, Gujranwala in rice-cropped zone, Faisalabad in central mixed-cropped zone, and Khanewal and Multan in cotton-cropped zone. The dominant aphid species i.e. Schizaphis graminum, Rhopalosiphum padi, R. maidis and Sitobion avenae varied significantly among the five districts surveyed. The population of S. graminum was observed more abundant in arid, R. padi in rice, S. avenae in aird and rice, and R. maidis in cotton-I zones. Aphids ended their population dynamics on 25th March in central mixed-cropped zone and 12th April in other three zones. Various species of natural enemies, mainly Coccinella septumpunctata, C. undecimpunctata, Menochilus sexmaculata, Chrysoperla carnea, Syrphidae and parasitoid mummies were inconsistently observed in four agro-ecological zones. The population of C. septumpunctata, was observed more abundant in rice zone, C. undecimpunctata and C. carnea in cotton-I and arid zones, M. sexmaculata in cotton-I and II zones, Syrphidae in cotton-I zone and parasitoid mummies in rice and arid zones. There were no clear relationships between aphid and the natural enemy populations. The present study may serve as a baseline regarding distribution of wheat aphids and their natural enemies and the results provided insights for further studies on the potential top-down (natural enemies) versus bottom-up (fertilization and irrigation regimes) forces in management of wheat aphids in eastern Pakistan.

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“…The Type II functional response was displayed on M.rosae by both instars of E. balteatus. Amiri-Jami et al (2014) reported the type II functional response of both E. balteatus larval sizes fed on A. fabae. Jalilian et al (2011) also reported a type II functional response of E. balteatus towards M. persicae.…”

Section: S507mentioning

confidence: 99%

Temperature-dependent Prey Consumption and Functional Response of Episyrphus balteatus De Geer (Diptera: Syrphidae) to Macrosiphum rosae L. (Homoptera: Aphididae) reared on Rosa alba L. under Laboratory Conditions

Mushtaq¹,

Ali²,

Khan³

2023

EEC

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Laboratory experiments were conducted to determine the prey consumption and functional response of the aphidophagous hoverfly Episyrphus balteatus DeGeer (Diptera: Syrphidae) to different densities of fourth instar rose aphids, Macrosiphum rosae (Homoptera: Aphididae), reared on Rosa alba L. (Rosaceae) at 20 oC, 27 oC and 35 oC. The third instar of E.balteatus consumed a maximum of 51.3±0.53 M. rosae aphids at 27 oC, followed by the third instar with 46.5±0.53 aphid predation at 20 oC. The lowest handling time (Th) was noted for the third instar larvae of E. balteatus (0.407± 0.012) at 27 oC, and the maximum handling time (Th) of (0.662 ± 0.024) was noted for 2nd larvae of E. balteatus at 35 oC. The highest attack rate was noted for 3rd instar larvae (0.201± 0.014) at 27 oC, while the lowest attack rate was noted for second instar at 35 oC. Both instars of Episyrphus balteatus exhibited type II functional response at all three temperatures.

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Responses of Episyrphus balteatus DeGeer (Diptera: Syrphidae) in relation to prey density and predator size

Cited by 17 publications

References 31 publications

Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae)

Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae)

Spatio-temporal variations in wheat aphid populations and their natural enemies in four agro-ecological zones of Pakistan

Temperature-dependent Prey Consumption and Functional Response of Episyrphus balteatus De Geer (Diptera: Syrphidae) to Macrosiphum rosae L. (Homoptera: Aphididae) reared on Rosa alba L. under Laboratory Conditions

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