scholarly journals Reproductive Biology and Functional Response ofDineulophus phtorimaeae, a Natural Enemy of the Tomato Moth,Tuta absoluta

2012 ◽  
Vol 12 (153) ◽  
pp. 1-14 ◽  
Author(s):  
Vivina Savino ◽  
Carlos E. Coviella ◽  
María G. Luna
Keyword(s):  
Functional Response ◽  
Reproductive Biology ◽  
Natural Enemy ◽  
Tuta Absoluta

Functional response of Neochrysocharis formosa to Tuta absoluta

2020 ◽  
pp. 1-13
Author(s):  
P. Guleria ◽  
P. L. Sharma ◽  
S. C. Verma ◽  
R. S. Chandel ◽  
Nidhi Sharma
Keyword(s):  
Functional Response ◽  
Tuta Absoluta ◽  
Neochrysocharis Formosa

scholarly journals Survival of a specialist natural enemy experiencing resource competition with an omnivorous predator when sharing the invasive prey Tuta absoluta

2017 ◽  
Vol 7 (20) ◽  
pp. 8329-8337 ◽  
Author(s):  
Anaïs Chailleux ◽  
Anthony Droui ◽  
Philippe Bearez ◽  
Nicolas Desneux
Keyword(s):  
Natural Enemy ◽  
Resource Competition ◽  
Tuta Absoluta ◽  
Invasive Prey

scholarly journals Performance of Pseudapanteles dignus (Hymenoptera: Braconidae), a Natural Enemy of Tuta absoluta (Lepidoptera: Gelechiidae) in Eggplant

2017 ◽  
Vol 111 (2) ◽  
pp. 528-532
Author(s):  
Nadia G Salas Gervassio ◽  
María G Luna ◽  
Franco D’Auro ◽  
Norma E Sánchez
Keyword(s):  
Natural Enemy ◽  
Tuta Absoluta

scholarly journals The pest kill rate of thirteen natural enemies as aggregate evaluation criterion of their biological control potential of Tuta absoluta

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Joop C. van Lenteren ◽  
Alberto Lanzoni ◽  
Lia Hemerik ◽  
Vanda H. P. Bueno ◽  
Johanna G. Bajonero Cuervo ◽  
...  
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Natural Enemy ◽  
Tuta Absoluta ◽  
Evaluation Criterion ◽  
Pest Population ◽  
Biological Pest Control ◽  
Daunting Task ◽  
Kill Rate ◽  
Reduction Capacity

AbstractEcologists study how populations are regulated, while scientists studying biological pest control apply population regulation processes to reduce numbers of harmful organisms: an organism (a natural enemy) is used to reduce the population density of another organism (a pest). Finding an effective biological control agent among the tens to hundreds of natural enemies of a pest is a daunting task. Evaluation criteria help in a first selection to remove clearly ineffective or risky species from the list of candidates. Next, we propose to use an aggregate evaluation criterion, the pest kill rate, to compare the pest population reduction capacity of species not eliminated during the first selection. The pest kill rate is the average daily lifetime killing of the pest by the natural enemy under consideration. Pest kill rates of six species of predators and seven species of parasitoids of Tuta absoluta were calculated and compared. Several natural enemies had pest kill rates that were too low to be able to theoretically reduce the pest population below crop damaging densities. Other species showed a high pest reduction capacity and their potential for practical application can now be tested under commercial crop production conditions.

Acute and non-lethal effects of coconut oil on predatory mite Typhlodromus ornatus (Acari: Phytoseiidae)

2018 ◽  
Vol 23 (7) ◽  
pp. 1333 ◽  
Author(s):  
Giselle Freitas ◽  
Maria Clezia Santos ◽  
Vanessa Lira ◽  
Andreia Galvão ◽  
Eugenio Oliveira ◽  
...  
Keyword(s):  
Side Effects ◽  
Functional Response ◽  
Vegetable Oils ◽  
Natural Enemy ◽  
Coconut Oil ◽  
Predatory Mites ◽  
Predatory Mite ◽  
Aceria Guerreronis ◽  
Lethal Effects ◽  
Coconut Mite

Typhlodromus (Anthoseius) ornatus Denmark & Muma (Acari: Phytoseiidae) is one of the predatory mites associated with the coconut mite Aceria guerreronis (Acari: Eriophyidae), a serious coconut pest in Africa, Asia and America. Vegetable oils such as coconut oil have been shown to efficiently control A. guerreronis, however their side effects on predatory mites remain poorly investigated. Here, we evaluated the lethal and non-lethal effects of coconut oil on repellence and functional response of the predatory mite T. ornatus, a natural enemy of A. guerreronis. Based on LC50 estimates, coconut oil was over 6-fold less toxic to T. ornatusthan to its prey, A. guerreronis. Additional repellence and predation bioassays show that the coconut oil neither repels nor interferes in the functional response of T. ornatus preying upon A. guerreronis. According to our selectivity approach, the coconut oil is compatible with the predatory mite T. ornatus. 

scholarly journals Differential Interaction Strengths and Prey Preferences Across Larval Mosquito Ontogeny by a Cohabiting Predatory Midge

2019 ◽  
Vol 56 (5) ◽  
pp. 1428-1432 ◽  
Author(s):  
Ross N Cuthbert ◽  
Amanda Callaghan ◽  
Jaimie T A Dick
Keyword(s):  
Functional Response ◽  
Natural Enemy ◽  
Population Level ◽  
Prey Type ◽  
Water Volume ◽  
Feeding Rates ◽  
Larval Stages ◽  
Prey Preferences ◽  
Late Instar ◽  
Size Refuge

Abstract Understandings of natural enemy efficacy are reliant on robust quantifications of interaction strengths under context-dependencies. For medically important mosquitoes, rapid growth during aquatic larval stages could impede natural enemy impacts through size refuge effects. The identification of biocontrol agents which are unimpeded by ontogenic size variability of prey is therefore vital. We use functional response and prey preference experiments to examine the interaction strengths and selectivity traits of larvae of the cohabiting predatory midge Chaoborus flavicans (Meigen 1830) (Diptera: Chaoboridae) towards larval stages of the Culex pipiens (Diptera: Culicidae) mosquito complex. Moreover, we examine the influence of search area variation on selectivity traits, given its importance in consumer-resource interactions. Chaoborids were able to capture and consume mosquito prey across their larval ontogeny. When prey types were available individually, a destabilizing Type II functional response was exhibited towards late instar mosquito prey, whereas a more stabilizing Type III functional response was displayed towards early instars. Accordingly, search efficiencies were lowest towards early instar prey, whereas, conversely, maximum feeding rates were highest towards this smaller prey type. However, when the prey types were present simultaneously, C. flavicans exhibited a significant positive preference for late instar prey, irrespective of water volume. Our results identify larval chaoborids as efficacious natural enemies of mosquito prey, with which they frequently coexist in aquatic environments. In particular, an ability to prey on mosquitoes across their larval stages, coupled with a preference for late instar prey, could enable high population-level offtake rates and negate compensatory reductions in intraspecific competition through size refuge.

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