Effects of buprofezin and imidacloprid on the functional response of Eretmocerus mundus Mercet

Abstract

Sohrabi F.,Shishehbor P., Saber M., Mosaddegh M.S. (2014): Effects of buprofezin and imidacloprid on the functional response of Eretmocerus mundus Mercet. Plant Protect. Sci., 50: 145-150.Eretmocerus mundus Mercet is one of the key natural enemies of bemisia tabaci (Gennadius). In this study, the sublethal effects of LC 25 of imidacloprid and field-recommended concentration of buprofezin on the functional response of E. mundus to different densities of second instar b. tabaci nymphs were evaluated. The results revealed a type III functional response in the control and imidacloprid treatment. The type III functional response was altered into a type II by buprofezin. Although imidacloprid did not alter the type of functional response of E. mundus compared to the control, it negatively affected the handling time and maximum attack rate of the parasitoid. Therefore, the use of this insecticide should be evaluated carefully in IPM programs.

Sublethal effects of some insecticides on the functional response of Aenasius bambawalei Hayat, 2009 (Hymenoptera: Encyrtidae)

“…: Braconidae) (Abedi et al, 2012, Mahdavi et al, 2013, Rashidi et al, 2018, Dolichogenidea tasmanica (Cameron, 1912) (Hym. : Braconidae) (Paull et al, 2014), and Eretmocerus mundus Mercet, 1931 (Sohrabi et al, 2014) have been reported in previous studies. Nevertheless, there is no available information on the sublethal effects of insecticides on A. bambawalei.…”

“…In another study, the type of functional response of Diaretiella rapae (McIntosh) did not change when it was exposed to primicarb and thiamethoxam (Rezaei et al, 2014). However, Sohrabi et al (2014) reported an alteration in type III functional response of Eretmocerus mundus Mercet in control treatment as well as imidacloprid to type II in buprofezin treatment. Moreover, the sublethal concentrations of primicarb, cypermethrin, and dimethoate changed the functional response of D. rapae from type II to type III (De-Jiu et al, 1991).…”

“…Parasitoids with type III functional response are density-dependent and can increase their search rate on higher densities of the host. Although a previous overview on functional response indicated that type II is more common in parasitoids (Fernandez-arhex & Corley, 2003), several studies indicate type III in parasitoid wasps such as Eretmocerus mundus Mercet on Bemisia tabaci Gennadius, 1889 (Sohrabi et al, 2014), Aphidius colemani Viereck, 1912 on Aphis gossypii Glover, 1877 (Van Steenis & El-Whawass, 1995) and Praon volucre (Haliday, 1833) on Myzus persicae (Sulzer, 1776) (Tazerouni et al, 2016). According to an earlier study, type II functional response was…”

Sublethal effect of Abamectin in the functional response of the predator Phytoseiulus persimilis (Athias-Henriot) on Tetranychus urticae (Koch) (Acari: Phytoseiidae, Tetranychidae)

“…It has been observed that not only the mites are affected by the application of sublethal doses or pesticides residues, other organisms commonly used for the biological control are also exposed to changes in their demographic behavior and the functional response (Stark et al, 2004;Talebi et al, 2008, Sohrabi et al, 2014. In this case, mites exposed to sublethal concentrations did not show a change in their functional response, but positive in its efficiency (Table 1; Figure 1).…”

Toxicidad de Chenopodium ambrosioides (Amaranthaceae) e Imidacloprid sobre Cryptolaemus montrouzieri (Coleoptera:Coccinellidae)

“…Se ha observado efectos sobre depredadores como en la sobrevivencia de adultos de Chrysoperla carnea (Stephens, 1836) (Rogers, Krischik & Martin, 2007) y sobre Orius insidiosus (Say, 1832) (Funderburk, Srivastava, Funderbuck & McManus, 2013). Se ha determinados los efectos toxicológicos del imidacloprid en parasitoides como Eretmocerus mundus (Mercet, 1931) (Sohrabi, Shishehbor, Saber & Mosaddegh, 2014), Habrobracon hebetor Say, 1857 (Sarmadi, Nouri-Ganbalani, Rafiee-Dastjerdi, Hassanpour & Farshbaf-Pourabad, 2010;Rafiee-Dastjerdi et al, 2012) y Microplitis croceipes (Cresson, 1872) (Stapel, Cortesero & Lewis, 2000). De igual forma se han visto efectos deletéreos del imidacloprid sobre hongos antagonistas como Trichoderma harzianum (Rifai, 1969;Sivparsad, Chiuraise,Laing & Morris, 2014).…”