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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003433naa a2200445 4500
001oai:DiVA.org:su-50297
003SwePub
008101222s2010 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-502972 URI
0247 a https://doi.org/10.1016/j.baae.2010.04.0052 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Bukovinszky, Tibor4 aut
2451 0a Combined effects of patch size and plant nutritional quality on local densities of insect herbivores
264 1b Elsevier BV,c 2010
338 a print2 rdacarrier
500 a authorCount :10
520 a Plant-insect interactions occur in spatially heterogeneous habitats. Understanding how such interactions shape density distributions of herbivores requires knowledge on how variation in plant traits (e.g. nutritional quality) affects herbivore abundance through, for example, affecting movement rates and aggregation behaviour. We studied the effects of plant patch size and herbivore-induced differences in plant nutritional quality on local densities of insect herbivores for two Brassica oleracea cultivars, i.e. white cabbage and Brussels sprouts. Early season herbivory as a treatment resulted in measurable differences in glucosinolate concentrations in both cultivars throughout the season. Herbivore induction and patch size both influenced community composition of herbivores in both cultivars, but the effects differed between species. Flea beetles (Phyllotreta spp.) were more abundant in large than in small patches, and this patch response was more pronounced on white cabbage than on Brussels sprouts. Herbivore-induction increased densities in all patches. Thrips tabaci was also more abundant in large patches and densities of this species were higher on Brussels sprouts than on white cabbage. Thrips densities were lower on induced than on control plants of both cultivars and this negative effect of induction tended to be more pronounced in large than in small patches. Densities of the cabbage moth (Mamestra brassicae) were lower on Brussels sprouts than on white cabbage and lower on herbivore-induced than on uninduced plants, with no effect of patch size. No clear effects of patch size and induction were found for aphids. This study shows that constitutive and herbivore-induced differences in plant traits interact with patch responses of insect herbivores.
653 a Density-patch size relationships
653 a Host plant quality
653 a Herbivore densities
653 a Induced responses
653 a NATURAL SCIENCES
653 a NATURVETENSKAP
7001 a Gols, Rieta4 aut
7001 a Kamp, Andre4 aut
7001 a de Oliveira-Domingues, Filipe4 aut
7001 a Hambäck, Peter A.u Stockholms universitet,Botaniska institutionen4 aut0 (Swepub:su)phamb
7001 a Jongema, Yde4 aut
7001 a Bezemer, T. Martijn4 aut
7001 a Dicke, Marcel4 aut
7001 a van Dam, Nicole M.4 aut
7001 a Harvey, Jeffrey A.4 aut
7102 a Stockholms universitetb Botaniska institutionen4 org
7730 t Basic and Applied Ecologyd : Elsevier BVg 11:5, s. 396-405q 11:5<396-405x 1439-1791x 1618-0089
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-50297
8564 8u https://doi.org/10.1016/j.baae.2010.04.005

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