Generation-based life table analysis reveals manifold effects of inbreeding on the population fitness in Plutella xylostella

Lu Peng, Mingmin Zho, Nana Ren, Miao Xie, L. Vasseur, Yifan Yang, Weiyi He, Guang Yang, Geoffrey Gurr, Youming Hou, Shijun You, Minsheng You

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Abstract

Understanding how inbreeding affects fitness is biologically important for conservation and pest management. Despite being a worldwide pest of many economically important cruciferous crops, the influence of inbreeding on diamondback moth, Plutella xylostella (L.), populations is currently unknown. Using age-stage-specific life tables, we quantified the inbreeding effects on fitness-related traits and demographic parameters of P. xylostella. Egg hatching rate, survival and fecundity of the inbred line significantly declined compared to those of the outbred line over time. The inbred P. xylostella line showed significantly lower intrinsic rate of increase (r), net reproduction rate (R 0), and finite increase rate (?), and increasing generation time (T). Inbreeding effects vary with developmental stages and the fitness-related traits can be profoundly affected by the duration of inbreeding. Our work provides a foundation for further studies on molecular and genetic bases of the inbreeding depression for P. xylostella.
Original languageEnglish
Article number12749
Pages (from-to)1-12
Number of pages12
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - 2015

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Peng, L., Zho, M., Ren, N., Xie, M., Vasseur, L., Yang, Y., He, W., Yang, G., Gurr, G., Hou, Y., You, S., & You, M. (2015). Generation-based life table analysis reveals manifold effects of inbreeding on the population fitness in Plutella xylostella. Scientific Reports, 5, 1-12. [12749]. https://doi.org/10.1038/srep12749