Impact of the zoophytophagous plant bug Nesidiocoris tenuis (Heteroptera: Miridae) on tomato yield

Journal of Economic Entomology
J A Sanchez, A Lacasa

Abstract

Nesidiocoris tenuis Reuter (Heteroptera: Miridae) is one of the most controversial dicyphines because of the injuries it causes to tomato (Solanum esculentum) crops. The aim of this study was to quantify the impact of N. tenuis on fruit yield. Tomato plants were exposed to an average of 0.53 +/- 0.26, 3.4 +/- 1.1, 12.0 +/- 1.4, and 35.2 +/- 7.7 N. tenuis per plant for 3 wk. When fruit were exposed to N. tenuis as flowers, the percentage of aborted fruit was higher in compartments infested with N. tenuis, and this was related directly to the cumulative number of N. tenuis (CNN). However, compartments with the highest abortion rates had heavier and bigger fruit and were not significantly different from the controls. The variation in fruit weight was satisfactorily explained with a logistic equation in relation to the proportion of aborted fruit. To estimate the density thresholds, the variation in truss weight was predicted as a function of fruit weight and aborted fruit. The two latter variables were expressed as a function of the CNN. A maximum of 15% truss weight overcompensation was predicted at 15.8% of fruit abortion. Yield reduction was predicted at fruit abortion rates > or = 27.7%, which corresponded to 566 CNN per plant...Continue Reading

Citations

Jul 26, 2014·Bulletin of Entomological Research·A Caspi-FlugerE Zchori-Fein
May 20, 2016·Communicative & Integrative Biology·Maria L PappasGeorge D Broufas
Nov 14, 2014·Experimental & Applied Acarology·E AdarE Palevsky
Aug 31, 2016·Bulletin of Entomological Research·D B SilvaJ C van Lenteren
Aug 14, 2020·Insects·Milena Chinchilla-RamírezAlberto Urbaneja
Dec 17, 2018·Ecology·Loriann C Garcia, Micky D Eubanks
Jul 3, 2021·Microorganisms·Nikoletta GalambosMichele Perazzolli
Aug 28, 2021·Insects·Gabriela Esparza-DiazRaul T Villanueva

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