Journal of Economic Entomology (2010) 103, 2019-2027

Mahmoud Soufbaf, Yaghoub Fathipour, Javad Karimzadeh and Myron P. Zalucki (2010)
Bottom-up effect of different host plants on Plutella xylostella (Lepidoptera: Plutellidae): A life-table study on canola
Journal of Economic Entomology 103 (6), 2019-2027
Abstract: The effects of 10 commercial canola, Brassica napus L., cultivars widely grown in Iran-'SLM₀₄₆,' 'Opera,' 'Okapi,' 'RGS₀₀₃,' 'Modena,' 'Sarigol,' 'Zarfam,' 'Licord,' 'Hayula₄₂₀,' and 'Talaye'-on the demographic parameters of diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae), were determined. The experiments were conducted in a growth chamber at 25 ± 1°C, 65 ± 2% RH, and aphotoperiod of 16:8 (L:D) h. The comparison of intrinsic rate of natural increase (r_m ), net reproductive rate (R₀), and the survival rate of adult stage of P. xylostella on 10 canola cultivars suggested that this pest performed best on SLM₀₄₆. The r_m value of P. xylostella ranged between 0.241 on RGS₀₀₃ and 0.304 on SLM₀₄₆. The R₀, finite rate of increase (lambda), mean generation time (T), and doubling time (DT) values of P. xylostella on SLM₀₄₆ were 52, 1.35, 13.4, and 2.35 and on RGS₀₀₃ were 31, 1.27, 14.4, and 2.94, respectively. The Weibull model adequately described the shape of the survivorship curve of adult P. xylostella from life-table data. A significant fit was obtained with the Weibull model for P. xylostella in all experimental canola cultivars. As a result, SLM₀₄₆ Opera, and Hayula₄₂₀ were the most suitable hosts and had least negative impact on life-history statistics of the pest.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Yaghoub Fathipour, Javad Karimzadeh, Myron P. Zalucki

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
general biology - morphology - evolution

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plutella xylostella	Rape/canola (Brassica napus)