{"title":"Feeding potential and functional response of <i>Oenopia sauzeti</i> (Mulsant) against potato aphid, <i>Macrosiphum euphorbiae</i> Thomas (Hemiptera: Aphididae).","authors":"Priyanka Sharma, Prem Lal Sharma, Subhash Chander Verma, Shikha Thakur, Shubham Sharma, Prajjval Sharma","doi":"10.1017/S0007485325000288","DOIUrl":null,"url":null,"abstract":"<p><p><i>Oenopia sauzeti</i> (Mulsant) (Coccinellidae: Coleoptera) is a highly efficient predator of sap-sucking insect pests due to its high feeding capacity and broad prey range. The present investigation was carried out to find out the feeding potential and functional response of <i>O. sauzeti</i> fed on different densities of <i>Macrosiphum euphorbiae</i> (Thomas) (Aphididae: Hemiptera) nymphs in the <i>in vitro</i> condition with the overarching objective of appraising the ladybird beetle's potential as a distinguished biological control agent. The newly emerged coccinellid grubs of a particular stage were reared individually on Petri plates with a known number of <i>M. euphorbiae</i> nymphs of a particular stage. The single individual of <i>O. sauzeti</i> consumed 1104.53, 936.53, 634.07, and 473.20 aphids in one generation when reared on the first, second, third, and fourth instars of <i>M. euphorbiae</i>, respectively. The female adult of predator recorded as a more voracious feeder compared to the male adult. <i>O. sauzeti</i> exhibits a type II functional response against potato aphid, and a significantly negative linear coefficient was obtained after logistic regression analysis for the proportion of prey consumed (N<sub>a</sub>/N) as a function of initial prey density (N). The functional response parameters, i.e. attack rate and handling time, were estimated by applying Roger's random predator equation. The attack rate increased, and handling time decreased with the advancement of the development stage of the predator. The voracious nature of both adults and grubs of the ladybird beetle makes this effective biocontrol agent to be used in the Integrated Pest Management Programme against the potato aphid.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-13"},"PeriodicalIF":1.6000,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Entomological Research","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1017/S0007485325000288","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENTOMOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Oenopia sauzeti (Mulsant) (Coccinellidae: Coleoptera) is a highly efficient predator of sap-sucking insect pests due to its high feeding capacity and broad prey range. The present investigation was carried out to find out the feeding potential and functional response of O. sauzeti fed on different densities of Macrosiphum euphorbiae (Thomas) (Aphididae: Hemiptera) nymphs in the in vitro condition with the overarching objective of appraising the ladybird beetle's potential as a distinguished biological control agent. The newly emerged coccinellid grubs of a particular stage were reared individually on Petri plates with a known number of M. euphorbiae nymphs of a particular stage. The single individual of O. sauzeti consumed 1104.53, 936.53, 634.07, and 473.20 aphids in one generation when reared on the first, second, third, and fourth instars of M. euphorbiae, respectively. The female adult of predator recorded as a more voracious feeder compared to the male adult. O. sauzeti exhibits a type II functional response against potato aphid, and a significantly negative linear coefficient was obtained after logistic regression analysis for the proportion of prey consumed (Na/N) as a function of initial prey density (N). The functional response parameters, i.e. attack rate and handling time, were estimated by applying Roger's random predator equation. The attack rate increased, and handling time decreased with the advancement of the development stage of the predator. The voracious nature of both adults and grubs of the ladybird beetle makes this effective biocontrol agent to be used in the Integrated Pest Management Programme against the potato aphid.
期刊介绍：
Established in 1910, the internationally recognised Bulletin of Entomological Research aims to further global knowledge of entomology through the generalisation of research findings rather than providing more entomological exceptions. The Bulletin publishes high quality and original research papers, ''critiques'' and review articles concerning insects or other arthropods of economic importance in agriculture, forestry, stored products, biological control, medicine, animal health and natural resource management. The scope of papers addresses the biology, ecology, behaviour, physiology and systematics of individuals and populations, with a particular emphasis upon the major current and emerging pests of agriculture, horticulture and forestry, and vectors of human and animal diseases. This includes the interactions between species (plants, hosts for parasites, natural enemies and whole communities), novel methodological developments, including molecular biology, in an applied context. The Bulletin does not publish the results of pesticide testing or traditional taxonomic revisions.
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