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The Effect of Delayed Emergence On Infectivity of Juveniles of the Potato Cyst Nematode Globodera Rostochiensis

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The potential infectivity of second stage juveniles of Globodera rostochiensis was influenced by the amount of their lipid reserves at the time of hatching. Scanning microdensitometry showed that stimulation of hatch by potato root diffusate increased lipid utilization by the unhatched juvenile and late hatching individuals had a significantly reduced lipid content at eclosion. Late hatching juveniles had impaired infectivity and delayed development compared with juveniles emerging from the same cysts soon after stimulation. This effect was not caused by initial differences in lipid content. The results are discussed in the context of the significance of delayed hatching in G. rostochiensis.

Affiliations: 1: Department of Pure and Applied Zoology, Agricultural Sciences Building, University of Leeds, Leeds, LS2 9JT, England, Nematology Department, Rothamsted Experimental Station, Harpenden, Herts., AL5 2JQ England; 2: Department of Pure and Applied Zoology, Agricultural Sciences Building, University of Leeds, Leeds, LS2 9JT, England; 3: Nematology Department, Rothamsted Experimental Station, Harpenden, Herts., AL5 2JQ England

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/content/journals/10.1163/187529285x00229
1985-01-01
2016-12-05

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