Ephestia kuehniella Zeller eggs as a surrogate host to test feeding preference and intraguild interactions between Macrolophus pygmaeus (Rambur) and Trichogramma achaeae Nagaraja and Nagarkatti
{"title":"Ephestia kuehniella Zeller eggs as a surrogate host to test feeding preference and intraguild interactions between Macrolophus pygmaeus (Rambur) and Trichogramma achaeae Nagaraja and Nagarkatti","authors":"","doi":"10.1016/j.cropro.2024.106960","DOIUrl":null,"url":null,"abstract":"<div><p>Mass rearing of <em>Tuta absoluta</em> (Meyrick) (Lepidoptera: Gelechiidae) eggs is a laborious task requiring investment of time, equipment and man hour work. The use of a surrogate prey/host, as <em>Ephestia kuehniella</em> Zeller (Lepidoptera: Pyralidae), easily obtained and maintain, could be an option to undertake experiments. The aim of this study was to test to what extent the eggs of <em>E. kuehniella</em> is a suitable surrogate host of <em>T. absoluta</em> eggs to test for feeding preference and intraguild interactions between <em>Macrolophus pygmaeus</em> (Rambur) (Hemiptera: Miridae) and <em>Trichogramma achaeae</em> Nagaraja and Nagarkatti (Hymenoptera: Trichogrammatidae). Our results shows that <em>E. kuehniella</em> eggs is a suitable surrogate host to test for feeding preference and intraguild interactions between natural enemies, taking in consideration that i) under single diet, feeding on <em>T. absoluta</em> eggs is expected to be twice that on <em>E. kuehniella</em>, ii) whether offering <em>T. absoluta</em> or <em>E. kuehniella</em> under different ratios of parasitized <em>vs</em> unparasitized eggs, feeding preference was always toward non-parasitized eggs iii) in conspecific experiments with increasing density of <em>M. pygmaeus</em> females, the results show an overall decrease on feeding of 38.7% of <em>E. kuehniella</em> compared with <em>T. absoluta</em> eggs but experiments with <em>T. achaeae</em> show an overall increase in parasitism rate of 78.2% of eggs toward <em>E. kuehniella</em> eggs iv) in heterospecific experiments with increasing density of both natural enemies, when using <em>E. kuehniella</em> eggs we found an overall decrease on feeding consumption of 30% and an increase of parasitism rate of 65%.</p></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0261219424003880/pdfft?md5=62b406fe324c58458a3630a92268e36e&pid=1-s2.0-S0261219424003880-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crop Protection","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0261219424003880","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
Mass rearing of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) eggs is a laborious task requiring investment of time, equipment and man hour work. The use of a surrogate prey/host, as Ephestia kuehniella Zeller (Lepidoptera: Pyralidae), easily obtained and maintain, could be an option to undertake experiments. The aim of this study was to test to what extent the eggs of E. kuehniella is a suitable surrogate host of T. absoluta eggs to test for feeding preference and intraguild interactions between Macrolophus pygmaeus (Rambur) (Hemiptera: Miridae) and Trichogramma achaeae Nagaraja and Nagarkatti (Hymenoptera: Trichogrammatidae). Our results shows that E. kuehniella eggs is a suitable surrogate host to test for feeding preference and intraguild interactions between natural enemies, taking in consideration that i) under single diet, feeding on T. absoluta eggs is expected to be twice that on E. kuehniella, ii) whether offering T. absoluta or E. kuehniella under different ratios of parasitized vs unparasitized eggs, feeding preference was always toward non-parasitized eggs iii) in conspecific experiments with increasing density of M. pygmaeus females, the results show an overall decrease on feeding of 38.7% of E. kuehniella compared with T. absoluta eggs but experiments with T. achaeae show an overall increase in parasitism rate of 78.2% of eggs toward E. kuehniella eggs iv) in heterospecific experiments with increasing density of both natural enemies, when using E. kuehniella eggs we found an overall decrease on feeding consumption of 30% and an increase of parasitism rate of 65%.
期刊介绍:
The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics:
-Abiotic damage-
Agronomic control methods-
Assessment of pest and disease damage-
Molecular methods for the detection and assessment of pests and diseases-
Biological control-
Biorational pesticides-
Control of animal pests of world crops-
Control of diseases of crop plants caused by microorganisms-
Control of weeds and integrated management-
Economic considerations-
Effects of plant growth regulators-
Environmental benefits of reduced pesticide use-
Environmental effects of pesticides-
Epidemiology of pests and diseases in relation to control-
GM Crops, and genetic engineering applications-
Importance and control of postharvest crop losses-
Integrated control-
Interrelationships and compatibility among different control strategies-
Invasive species as they relate to implications for crop protection-
Pesticide application methods-
Pest management-
Phytobiomes for pest and disease control-
Resistance management-
Sampling and monitoring schemes for diseases, nematodes, pests and weeds.