A new method to study the functional response of Scymnus syriacus (Coleoptera: Coccinellidae) to different densities of Aphis gossypii

Sakaki, Samane; Sahragard, Ahad

doi:10.1016/j.aspen.2011.07.003

Cited by 23 publications

(5 citation statements)

References 27 publications

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“…The adult ladybirds were individually placed in arenas with 150 aphids for 24 h as explained above. The number of aphids offered was chosen based on previously published predation capacity and functional response data (Jalali et al., ; Madadi et al., ; Sakaki & Sahragard, ). For each ladybird species, 15 replications were carried out.…”

Section: Methodsmentioning

confidence: 99%

Predation rate and performance of three ladybirds against the green peach aphid Myzus persicae in sweet pepper

Beltrà

Wäckers²,

Nedvěd

et al. 2018

Entomologia Exp Applicata

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Myzus persicae (Sulzer) (Hemiptera: Aphididae) is one of the most common and harmful pest species attacking sweet pepper. Here, we compared the predation rate and performance of Adalia bipunctata (L.), Hippodamia variegata (Goeze), and Scymnus interruptus Goeze (Coleoptera: Coccinellidae) fed on M. persicae infesting sweet pepper. In the laboratory, when offered 150 aphids daily, A. bipunctata was the most voracious species (predation per adult female of 122.7 aphids per 24 h) followed by H. variegata (87.7) and S. interruptus (27.3). When offered 50 aphids, 92% of the S. interruptus larvae developed to adults, 48% of H. variegata, and only 7% of A. bipunctata. In greenhouse experiments, A. bipunctata completely eradicated the aphid population within 2 days following release, whereas H. variegata and S. interruptus initially reduced the aphid population; however, in the long‐term, the infestation was not controlled. Adults of A. bipunctata remained on the plants even in the absence of prey but they laid almost no eggs. Very few adults of H. variegata and S. interruptus were recorded on the plants despite the presence of prey, yet egg laying was observed. Overall, A. bipunctata had an immediate impact on the aphids and is more suitable for curative releases. However, it showed limited potential to establish in the crop. Due to their capacity to complete development with low prey availability, the potential of H. variegata and S. interruptus for preventative releases against aphids in greenhouse crops should be studied further.

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Section: Methodsmentioning

confidence: 99%

Predation rate and performance of three ladybirds against the green peach aphid Myzus persicae in sweet pepper

Beltrà

Wäckers²,

Nedvěd

et al. 2018

Entomologia Exp Applicata

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“…Therefore, the efficiency of a predator can be assessed by its functional response (i.e., changes in attack rate in response to variations of prey populations × number of prey consumed per unit time in relation to prey density (Riechert & Harp, 1987). Four types of functional response have been defined based on the predation rate of a predator as a function of prey density: type I (a linear increase), type II (an increase with a slowdown at high prey densities), type III (a sigmoidal increase) and type IV (a dome shape in prey consumption increase (Holling, 1961;Pervez, 2005;Sakaki & Sahragard, 2011). Similarly, the biological traits of a predator, influenced by changes in prey species, greatly affect its predation activity.…”

Section: Introductionmentioning

confidence: 99%

Predatory functional response and fitness parameters ofOrius strigicollisPoppius when fedBemisia tabaciandTrialeurodes vaporariorumas determined by age-stage, two-sex life table

Rehman

Zhou

Ali

et al. 2020

PeerJ

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Background The polyphagous predatory bug O. strigicollis is an active predator used to control thrips and aphids. The whitefly species Bemisia tabaci and Trialeurodes vaporariorum are voracious pests of different economic agricultural crops and vegetables. Method In this study, the Holling disc equation and the age-stage, two-sex life table technique were used to investigate the functional response and biological traits of third instar nymphs and adult female O. strigicollis when presented third instar nymphs of both whitefly species as prey. Results The results showed a type II functional response for each life stage of O. strigicollis when fed each whitefly species. The calculated prey handling time for different O. strigicollis life stages were shorter when fed T. vaporariorum than when fed B. tabaci nymphs. In contrast, the nymphal development of O. strigicollis was significantly shorter when fed B. tabaci than T. vaporariorum nymphs. Additionally, the total pre-oviposition period of adult females was statistically shorter when fed B. tabaci nymphs than T. vaporariorum nymphs. Furthermore, the survival rates and total fecundity of O. strigicollis were higher when fed B. tabaci than T. vaporariorum. There were no significant differences in any population parameters of O. strigicollis when fed either whitefly species. These results show that O. strigicollis could survive and maintain its populations on both species of whitefly and could therefore serve as a biological control agent in integrated pest management (IPM).

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“…Furthermore, N. cucumeris feeds on T. tabaci , while N. cucumeris , N. barkeri , and E. nicholsi feed on T. flavidulus [ 38 , 39 ]. According to several studies, the type of functional response and the precise parametric values of a predator may differ with numerous determinants, such as the experimental environment and specific temperatures [ 40 , 41 ], host plant on which the prey and predator interact [ 14 , 42 ], and predator generation [ 43 ].…”

Section: Discussionmentioning

confidence: 99%

Implications of Temperature and Prey Density on Predatory Mite Amblyseius swirskii (Acari: Phytoseiidae) Functional Responses

Elmoghazy,

Elsherbini,

Mashlawi

et al. 2024

Insects

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Amblyseius swirskii are predaceous mites that feed on phytophagous mites, pollens, and plant exudates and are known as one of the most potent biological pest management agents. Tetranychus urticae is a global mite that is difficult to manage because of its high population growth rates, necessitating alternative management measures like biological control. Regarding the functional response, the effects of temperature and prey density are some of the essential behaviors of natural enemies. This study investigates the effect of varying temperatures and prey densities on A. swirskii, a biological control agent for T. urticae. The present results demonstrated the change in the functional response estimates when A. swirskii was reared at various temperatures and different prey densities. The results of the estimates regarding the searching efficiency (a′) showed the highest value (a′ = 0.919) at 26 °C and the lowest value (a′ = 0.751) at 14 °C. The handling time per prey item (Th) for the predatory mites changed with the temperature and prey density, showing the shortest handling time at 26 °C (Th = 0.005) and the highest value at 14 °C (Th = 0.015). The functional response curves matched the type II functional response model, demonstrating the inverse dependence of temperatures and prey density with a positive quadratic coefficient. The predation curves for A. swirskii showed a significant difference between the mean numbers of T. urticae consumed at various prey densities and temperatures, illustrating a relationship between A. swirskii and T. urticae. Therefore, the results of this research may be utilized to forecast the behavior of A. swirskii and its usefulness in controlling T. urticae populations.

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A new method to study the functional response of Scymnus syriacus (Coleoptera: Coccinellidae) to different densities of Aphis gossypii

Cited by 23 publications

References 27 publications

Predation rate and performance of three ladybirds against the green peach aphid Myzus persicae in sweet pepper

Predation rate and performance of three ladybirds against the green peach aphid Myzus persicae in sweet pepper

Predatory functional response and fitness parameters ofOrius strigicollisPoppius when fedBemisia tabaciandTrialeurodes vaporariorumas determined by age-stage, two-sex life table

Implications of Temperature and Prey Density on Predatory Mite Amblyseius swirskii (Acari: Phytoseiidae) Functional Responses

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