Diet-dependent fecundity of the spiders Atypena formosana and Pardosa pseudoannulata, predators in irrigated rice

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dc.creatorSigsgaard, Lene
dc.creatorToft, Søren
dc.creatorVillareal, Sylvia
dc.date2001-11
dc.date2024-12-19T12:56:55Z
dc.date2024-12-19T12:56:55Z
dc.date.accessioned2026-06-27T04:14:03Z
dc.description1 The fecundity of the spiders Atypena formosana and Pardosa pseudoannulata was assessed on diets of brown planthopper Nilaparvata lugens (BPH), green leafhopper Nephotettix virescens (GLH), Collembola (Entomobryidae), Droso phila melanogaster and three prey mixtures; BPH–GLH, BPH–GLH–Collembola and a full mixed diet of BPH–GLH–Collembola–D. melanogaster.2 Egg production and hatching success was high in A. formosana except on the BPH, the GLH and the BPH–GLH diets. In P. pseudoannulata egg production and hatching success was lowest on diets of GLH and BPH–GLH, whereas this spider used BPH better.3 Differences between offspring sizes were small.4 Survival of A. formosana females was lowest on the GLH and BPH–GLH diets. In P. pseudoannulata survival did not differ significantly.5 Food conversion efficiency was highest on the Collembola and the D. melanogaster diets for both spiders.6 Overall, diets of Collembola and D. melanogaster had the highest quality for both spiders, the BPH–GLH–Collembola and the full mixed diets were intermediate in quality, the quality of the BPH diet was intermediate to low and quality of the GLH and BPH–GLH diets was low.7 There need not be a contradiction between low dietary value of hoppers and successful natural biological control provided that the nutritional needs of the spiders are met by sufficient alternative prey.8 The hopper‐spider relationship is comparable to that of aphids and spiders in temperate cereals, suggesting that low dietary quality of Homopterans to spiders may be widespread.
dc.identifierhttps://hdl.handle.net/10568/167016
dc.identifier.urihttp://hdl.handle.net/123456789/25999
dc.languageen
dc.publisherWiley
dc.sourceSigsgaard, Lene; Toft, Søren and Villareal, Sylvia. 2001. Diet-dependent fecundity of the spiders Atypena formosana and Pardosa pseudoannulata, predators in irrigated rice. Agri and Forest Entomology, Volume 3 no. 4 p. 285-295
dc.subjectspiders
dc.subjectatypena formosana
dc.subjectcollembola
dc.subjectpardosa pseudoannulata
dc.subjectdrosophila melanogaster
dc.subjectnephotettix virescens
dc.subjectnilaparvata lugens
dc.subjectbiological control
dc.subjectfecundity
dc.subjectprey
dc.titleDiet-dependent fecundity of the spiders Atypena formosana and Pardosa pseudoannulata, predators in irrigated rice
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)