{"title":"Temperature dependent development and population performance of Tetranychus fijiensis Hirst (Acari: Tetranychidae) on Papaya","authors":"Shivakumar Veerlapati, N. Srinivasa","doi":"10.33307/entomon.v48i1.845","DOIUrl":null,"url":null,"abstract":"Developmental biology and life table characteristics of Tetranychus fijiensis Hirst (Acari: Tetranychidae) on papaya were studied at four distinct constant temperatures (20, 24, 28, and 32°C) and relative humidity (70-85%) conditions. With the increase in rearing temperature conditions, the length of T. fijiensis life cycle decreased from 34.46 to 8.58 days. At 20, 24, 28, and 32°C, the Net Reproduction Rate (R0) was 23.48, 39.06, 33.75, and 23.48 and; the intrinsic rate of population increase (rm) was 0.0694, 0.2003, 0.2281, and 0.1902 females/ female/day, respectively. The optimum temperature for mite development was observed to be between 24 and 28°C, while favourable temperature for optimal reproduction capacity of the mite was 28°C.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"12 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.33307/entomon.v48i1.845","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Developmental biology and life table characteristics of Tetranychus fijiensis Hirst (Acari: Tetranychidae) on papaya were studied at four distinct constant temperatures (20, 24, 28, and 32°C) and relative humidity (70-85%) conditions. With the increase in rearing temperature conditions, the length of T. fijiensis life cycle decreased from 34.46 to 8.58 days. At 20, 24, 28, and 32°C, the Net Reproduction Rate (R0) was 23.48, 39.06, 33.75, and 23.48 and; the intrinsic rate of population increase (rm) was 0.0694, 0.2003, 0.2281, and 0.1902 females/ female/day, respectively. The optimum temperature for mite development was observed to be between 24 and 28°C, while favourable temperature for optimal reproduction capacity of the mite was 28°C.
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