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Vegetation drives assemblages of entomopathogenic nematodes and other soil organisms: evidence from the Algarve, Portugal

2019Journal article Restricted access
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dc.contributor.authorCampos-Herrera, Raquel
dc.contributor.authorBlanco-Pérez, Rubén
dc.contributor.authorBueno-Pallero, Francisco Ángel
dc.contributor.authorDuarte, Amílcar
dc.contributor.authorNolasco, Gustavo
dc.contributor.authorSommer, Ralf J.
dc.contributor.authorRodríguez Martín, José Antonio
dc.date.accessioned2018-11-22T14:40:23Z
dc.date.available2018-11-22T14:40:23Z
dc.date.issued2019
dc.description.abstractEntomopathogenic nematodes (EPNs) are widely distributed in soils throughout the world. Their activity as biological control agents is modulated by abiotic and biotic factors (e.g. soil type, climatic fluctuation and natural enemies). We sought to identify soil properties in a Mediterranean region, which might be managed to enhance biological control agents’ services provided by EPNs. We hypothesized that responses of EPN soil food web assemblages to abiotic factors in such a Mediterranean region would be consistent with previous observations in other biomes in subtropical and temperate regions, in which pH and variables related to water content were main drivers of such association. We also expected that EPN abundance and species composition would differ between stable botanical habitats (citrus groves, palmetto areas, oaks and pines), with EPNs and associated organisms favoured in cultivated sites (citrus). In spring 2016, 50 georeferenced localities, representing four botanical habitats and two soil-ecoregions (calcareous versus non-calcareous), were surveyed. Using published and de novo real time qPCR tools, we evaluated the frequency and abundance of 10 EPN species and 13 organisms associated with EPNs: 6 nematophagous fungi (NF), 5 free-living nematodes (FLN), and 2 ectoparasitic bacteria. EPN activity was also assessed by traditional insect-baiting, allowing the evaluation of FLN-EPN mixed progeny. EPNs were detected by qPCR in 50% of localities, and strongly correlated with EPN activity. Steinernema feltiae was the dominant EPN species measured by both techniques (qPCR and insect-bait), being widespread in all Algarve, while Heterorhabditis bacteriophora was detected mainly in citrus groves. The species S. arenarium and H. indica were detected by qPCR for the fi rst time in continental Portugal. The molecular analysis of insect cadaver progeny revealed novel FLN-EPN associations with Pristionchus maupasi and P. pacificus. EPN, FLN and NF abundance differed among botanical groups, with citrus groves supporting high numbers of all trophic guilds. Oaks also favoured EPNs. Similarly, calcareous soil-ecoregion supported higher NF, FLN and EPN abundance. Two abiotic variables (pH, and clay content) explained the community variation in multivariate analysis, consistent with key abiotic variables described for other subtropical and temperate regions. The results supported the hypothesis that cultivated perennial habitats favour EPNs and soil organisms that can limit EPN activity as biological control agents.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCampos-Herrera, R.; Blanco-Pérez, R.; Bueno-Pallero, F.A.; Duarte, A.; Nolasco, G.; Sommer, R.J. & Rodríguez Martín, J.A. 2018. Vegetation drives assemblages of entomopathogenic nematodes and other soil organisms: Evidence from the Algarve, Portugal. Soil Biology and Biochemistry, 128: 150-163.pt_PT
dc.identifier.doi10.1016/j.soilbio.2018.10.019pt_PT
dc.identifier.issn0038-0717
dc.identifier.otherAUT: ADU00268; GNO00324;
dc.identifier.urihttp://hdl.handle.net/10400.1/10986
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relation.publisherversionhttps://authors.elsevier.com/c/1X~rz8g13FjVopt_PT
dc.subjectEntomopathogenic nematodespt_PT
dc.subjectHabitat preferencept_PT
dc.subjectMediterranean agro-ecosystemspt_PT
dc.subjectCoastal upwellingpt_PT
dc.subjectFreshwater dischargept_PT
dc.titleVegetation drives assemblages of entomopathogenic nematodes and other soil organisms: evidence from the Algarve, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage163pt_PT
oaire.citation.startPage150pt_PT
oaire.citation.titleSoil Biology and Biochemistrypt_PT
oaire.citation.volume128pt_PT
person.familyNameCampos-Herrera
person.familyNameDuarte
person.familyNameNolasco
person.givenNameRaquel
person.givenNameAmilcar
person.givenNameGustavo
person.identifier75402
person.identifier.ciencia-id081B-5FD8-0E51
person.identifier.orcid0000-0003-0852-5269
person.identifier.orcid0000-0002-2763-1916
person.identifier.orcid0000-0002-7025-6023
person.identifier.ridA-5299-2017
person.identifier.ridF-1472-2010
person.identifier.scopus-author-id16318511600
person.identifier.scopus-author-id7102602102
person.identifier.scopus-author-id6602625528
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication28736fd2-ac4e-43ac-84e0-51a1a10ffc28
relation.isAuthorOfPublication88280e66-023a-49f6-8081-c827a15900ce
relation.isAuthorOfPublication87a8035f-bc15-44dd-b8c3-4288c5660fff
relation.isAuthorOfPublication.latestForDiscovery28736fd2-ac4e-43ac-84e0-51a1a10ffc28

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