{"title":"Reproductive consequences of male interference in ladybird beetles","authors":"Harshita Yadav, Mohd Sariq, Geetanjali Mishra","doi":"10.1007/s10211-025-00470-2","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Ladybird beetles, <i>Propylea dissecta</i> and <i>Cheilomenes sexmaculata</i>, are important biocontrol agents, preying on a variety of aphid species. These beetles often coexist and interact, and such interactions may result in reduced female fitness. To assess the impact of conspecific and heterospecific males (<i>P. dissecta</i>) on the reproductive output of <i>C. sexmaculata</i> females, we conducted three experimental treatments: control, conspecific, and heterospecific. Our results indicated that during mating, conspecific males exerted significant interference due to species similarity, disrupting mating attempts of <i>C. sexmaculata</i> females. Following copulation with conspecific males, a reduction in fecundity and egg viability was observed regardless of whether the females were subsequently housed with conspecific or heterospecific males. Multiple mating events occurred in the conspecific treatment, while no heterospecific mating was recorded in the heterospecific treatment. These findings suggest that both conspecific and heterospecific interactions negatively affect the reproductive success of <i>C. sexmaculata</i>, potentially limiting the efficacy of these beetles as biocontrol agents. Further investigation into the mechanisms driving these interspecies interactions is essential to optimise the use of these beetles in integrated pest management strategies.</p>\n </div>","PeriodicalId":6879,"journal":{"name":"acta ethologica","volume":"28 3","pages":"151 - 160"},"PeriodicalIF":1.3000,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"acta ethologica","FirstCategoryId":"99","ListUrlMain":"https://link.springer.com/article/10.1007/s10211-025-00470-2","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"BEHAVIORAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Ladybird beetles, Propylea dissecta and Cheilomenes sexmaculata, are important biocontrol agents, preying on a variety of aphid species. These beetles often coexist and interact, and such interactions may result in reduced female fitness. To assess the impact of conspecific and heterospecific males (P. dissecta) on the reproductive output of C. sexmaculata females, we conducted three experimental treatments: control, conspecific, and heterospecific. Our results indicated that during mating, conspecific males exerted significant interference due to species similarity, disrupting mating attempts of C. sexmaculata females. Following copulation with conspecific males, a reduction in fecundity and egg viability was observed regardless of whether the females were subsequently housed with conspecific or heterospecific males. Multiple mating events occurred in the conspecific treatment, while no heterospecific mating was recorded in the heterospecific treatment. These findings suggest that both conspecific and heterospecific interactions negatively affect the reproductive success of C. sexmaculata, potentially limiting the efficacy of these beetles as biocontrol agents. Further investigation into the mechanisms driving these interspecies interactions is essential to optimise the use of these beetles in integrated pest management strategies.
期刊介绍:
acta ethologica publishes empirical and theoretical research papers, short communications, commentaries, reviews and book reviews as well as methods papers in the field of ethology and related disciplines, with a strong concentration on the behavior biology of humans and other animals.
The journal places special emphasis on studies integrating proximate (mechanisms, development) and ultimate (function, evolution) levels in the analysis of behavior. Aspects of particular interest include: adaptive plasticity of behavior, inter-individual and geographic variations in behavior, mechanisms underlying behavior, evolutionary processes and functions of behavior, and many other topics.
acta ethologica is an official journal of ISPA, CRL and the Portuguese Ethological Society (SPE)