Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Plastic ingestion by marine fish in the wild
Markic, A. ; Gaertner, J.C. ; Gaertner-Mazouni, N. ; Koelmans, A.A. - \ 2019
Critical Reviews in Environmental Science and Technology (2019). - ISSN 1064-3389
Marine plastic pollution has become a prominent environmental issue in the recent years. Plastic ingestion is of special concern, as its magnitude and consequences for marine organisms and potentially humans are still largely unknown. We reviewed 93 papers on plastic ingestion by wild marine fish published since 1972. Plastic ingestion was detected in 323 (65%) of 494 examined fish species, and in 262 (67%) of 391 examined commercial fish species. These proportions are likely greater, as a detailed analysis of the sampling effort and analytical methods used in the reviewed studies suggests an underestimation of plastic ingestion in some assessments. A significant positive relationship (R = + 0.845, p = 0.004) was found between the sample size up to N = 10 and the detection of plastic ingestion. We also found significant differences in detection and frequency of occurrence (FO, %) of plastic ingestion among the three main types of analytical methods: naked-eye, microscopic analysis and chemical digestion. The chemical digestion method, which is also the most robust laboratory method, had the greatest detection (86%) and the highest FO (37.6 ± 0.6%). To avoid the underestimation of plastic ingestion in future work, we provided recommendations for sample sizes and laboratory analysis.
The role of contact chemoreception in the host location process of an egg parasitoid
Iacovone, Alessia ; French, Alice Sarah ; Tellier, Frédérique ; Cusumano, Antonino ; Clément, Gilles ; Gaertner, Cyril ; Conti, Eric ; Salerno, Gianandrea ; Marion-Poll, Frédéric - \ 2016
Journal of Insect Physiology 91-92 (2016). - ISSN 0022-1910 - p. 63 - 75.
Behaviour - Electrophysiology - Gustation - Kairomone - Platygastridae - Sensilla chaetica - 016-3962

Taste allows insects to detect palatable or toxic foods, identify a mate, and select appropriate oviposition sites. The gustatory system strongly contributes to the survival and reproductive success of many species, yet it is rarely studied in insect parasitoids. In order to locate and assess a host in which they will lay their eggs, female wasps actively search for chemical cues using their sensory organs present mainly on the antennae. In this paper, we studied the role of antennal taste sensilla chaetica in the perception of contact semiochemicals in Trissolcus brochymenae (Hymenoptera: Platygastridae), an egg parasitoid of the brassicaceae pest Murgantia histrionica (Heteroptera: Pentatomidae). Methanolic extracts obtained from male and female hosts elicited action potentials in taste neurons housed in antennal sensilla chaetica, indicating that these sensilla are involved in the perception of non volatile host kairomones. In behavioural assays, wasp females displayed an intense searching behaviour in open arenas treated with host extracts, thus confirming that these kairomones are soluble in polar solvents. We further investigated the extracts by Gas Chromatography-Mass Spectrometry (GC-MS) and found that they contain several compounds which are good candidates for these contact kairomones. This study contributes to better understanding contact chemoreception in egg parasitoids and identifying gustatory receptor neurons involved in the host location process.

Insects on individual plants : plant quality, plant diversity and aboveground-belowground effects
Kostenko, O. - \ 2014
Wageningen University. Promotor(en): Wim van der Putten, co-promotor(en): T.M. Bezemer. - Wageningen : Wageningen University - ISBN 9789461738639 - 231
insecten - planten - insect-plant relaties - boven- en ondergrondse interacties - soortendiversiteit - parasitoïden - plant-herbivoor relaties - senecio jacobaea - fauna - insects - plants - insect plant relations - aboveground belowground interactions - species diversity - parasitoids - plant-herbivore interactions - senecio jacobaea - fauna
Planten en insecten vormen de basis van veel ecosystemen en ze zijn verantwoordelijk voor belangrijke ecologische functies. Gedurende de laatste drie decennia zijn ecologen en entomologen zich er steeds meer bewust van geworden dat het aantal insecten en de soortsamenstelling van die insecten op één plantensoort sterk kan variëren tussen individuen van die plantensoort. Het is echter nog steeds niet duidelijk welke factoren verantwoordelijk zijn voor deze variatie en op welke manier die variatie tot stand komt. Met meer kennis hierover kunnen we beter voorspellen hoe insectengemeenschappen er op een bepaalde plant uitzien en hoe ze zullen reageren op veranderingen in het milieu. Eerder onderzoek heeft aangetoond dat zowel de kwaliteit van de waardplant (zoals de hoeveelheid voedingsstoffen en plantverdedigingsstoffen) als haar omgeving insecten kunnen beïnvloeden. In dit promotieonderzoek heb ik met een combinatie van kas- en veldexperimenten onderzocht hoe intraspecifieke variatie in de waardplantkwaliteit en de omringende planten de insectengemeenschap op een individuele plant bepalen. Ik heb dit onderzoek gedaan met Jakobskruiskruid (Jacobaea vulgaris Gaertner ssp. vulgaris) en de bovengrondse en ondergrondse multitrofe gemeenschap waar deze plant mee geaffilieerd is.
Effects of diversity and identity of the neighbouring plant community on the abundance of arthropods onindividual ragwort (Jacobaea vulgaris) plants
Kostenko, O. ; Grootemaat, S. ; Putten, W.H. van der; Bezemer, T.M. - \ 2012
Entomologia Experimentalis et Applicata 144 (2012)1. - ISSN 0013-8703 - p. 27 - 36.
grassland biodiversity experiment - senecio-jacobaea - vegetational diversity - invertebrate herbivory - population ecology - species diversity - genetic-variation - natural enemies - susceptibility - competition
The diversity of plant community can greatly affect the abundance and diversity of arthropods associated to that community, but can also influence the composition or abundance of arthropods on individual plants growing in that community. We sampled arthropods and recorded plant size of individual ragwort, Jacobaea vulgaris Gaertner ssp. vulgaris [synonym Senecio jacobaea L. (Asteraceae)], plants transplanted into 70 experimental grassland plots that differed in plant diversity (1–9 species) or that were kept without vegetation. The arthropod fauna was dominated by the specialist aphid Aphis jacobaeae Schrank (Hemiptera: Aphididae). The abundance of aphids on ragwort plants decreased significantly with increasing plant diversity. The abundance of other arthropod species was not affected by the diversity of the surrounding plant community. Plant size was also not affected by the diversity of the surrounding plant community, but varied significantly among monocultures. Ragwort plants were largest in monocultures of legumes. Aphid abundance on ragwort plants, however, was not related to the size of the individual ragwort plants, but was high in monocultures consisting of Tanacetum vulgare L. (Asteraceae) plants. This plant is morphologically similar to ragwort. Even though we observed significant effects of plant diversity, ragwort plants were considerably larger – and the abundance of aphids and other arthropods on ragwort plants substantially higher – in plots without vegetation than in vegetated plots. Our results show that the presence and the diversity of neighbouring plants can provide associational resistance to focal plants growing in that community. We conclude that the surrounding plant community directly affects the abundance of arthropods on focal ragwort plants, and not via the effects of neighbouring plants on the performance of the focal plants.
Kindererziehung und Rentenversicherung - Zur Krise des "Generationenvertrags"
Weikard, H.P. - \ 2000
In: Wirtschaftsethische Perspektiven V. / Gaertner, W., Berlin : Duncker & Humblot - p. 141 - 156.
Echinochloa P. Beauvois (87-90); Eleusine coracana (L.) Gaertner cv. group Finger Millet (90-95); Panicum miliaceum L. cv. group Proso Millet (115-119); Setaria italica (L.) P. Beauvois cv. group Foxtail Millet (127-130); Minor cereals (150-156).
Jansen, P.C.M. - \ 1996
In: Cereals. Plant Resources of South-East Asia No 10 / Grubben, G.J.H., Partohardjono, Soetjipto, Leiden : Backhuys Publishers
Acacia Miller pp. 27-38. Ailanthus Desf. pp. 54-59. Beilschmiedia Nees pp. 78-84. Castanospermum A. Cunn. ex Hook. pp. 118-122. Cedrela P. Browne pp. 122-127. Dacrycarpus (Endl.) de Laubenf. pp. 161-166. Dacrydium Sol. ex J.G. Forster :pp. 167-172. Fagraea Thunb. pp. 234-242. Falcatifolium de Laubenf. pp. 242-245. Gluta L. pp. 245-255. Homalium Jacq. pp. 266-273. Koordersiodendron Engl. pp. 277-281. Libocedrus Endl. pp. 281-284. Lithocarpus Blume pp. 284-306. :Mangifera L. pp. 323-339. Nageia Gaertner 356-360. Ochanostachys Masters pp. 367-371. Octomeles Miq. pp. 371-375. Parishia Hook. f. pp. 375-380. Phyllocladus Rich. ex Mirbel pp. 392-395. Prumnopitys Philippi pp. 402-405. :Terminalia L. pp. 474-492. Toona (Endl.) M.J. Roemer pp. 492-499.
Boer, E. - \ 1995
In: Plant Resources of South-East Asia No 5(2). Timber trees: minor commercial timbers / Lemmens, R.H.M.J., Leiden : Backhuys Publishers
Fagraea Thunb. pp. 234-242. Koordersiodendron Engl. pp. 277-281. Mesua L. pp. 339-345. Octomeles Miq. pp. 371-375. Syzygium Gaertner pp. 441-474.
Fundter, J.M. - \ 1995
In: Plant Resources of South-East Asia No 5(2). Timber trees: minor commercial timbers / Lemmens, R.H.M.J., Leiden : Backhuys Publishers
pp. 118-122. Cinnamomum Schaeffer pp. 130-140. Cryptocarya R. Br. pp. 152-161. Dacrycarpus (Endl.) de Laubenf. pp. 161-166. Dacrydium Sol. ex J.G. Forster pp. 167-172. Diospyros L. pp. 185-205. Elmerillia Dandy pp. 230-234. Fragraea :Thunb. pp. 234-242. Falcatifolium de Laubenf. pp. 242-245. Homalium Jacq. pp. 266-273. Libocedrus Endl. pp. 281-28. Lithocarpus Blume pp. 284-306. Litsea Lamk pp. 306-323. Myristica Gronov. pp. 346-356. Nageia Gaertner pp. 356-360. :Nothofagus Blume pp. 360-367. Ochanostachys Masters pp. 367-371. Pentace Hassk. pp. 380-388. Pentaspadon Hook.f. pp. 388-391. Phyllocladus Rich. ex Mirbel pp. 392-395. Prumnopitys Philippi pp. 402-405. Pterocymbium R. Br. pp. 405-409. :Quercus L. pp. 409-416. Terminalia L. pp. 474-492.
Sosef, M.S.M. - \ 1995
In: Plant Resources of South-East Asia No 5(2). Timber trees: minor commercial timbers / Lemmens, R.H.M.J., Leiden : Backhuys Publishers
Introduction pp. 19-24. Acacia Miller pp. 27-38. Ailanthus Desf. pp. 54-59. Burckella Pierre pp. 88-92. Cedrela P. Browne pp. 122-127. Dillenia L. pp. 172-184. Duabanga Buch.-Ham. pp. 210-215. Durio Adans. pp. 215-225. :Gluta L. pp. 245-255. Mangifera L. pp. 323-339. Nageia Gaertner pp. 356-360. Parishia Hook.f. pp. 375-380. Pentaspadon Hook.f. pp. 388-391. Prumnopitys Philippi pp. 402-405. Sterculia L. pp. 423-435. Syzygium Gaertner pp. 441-474. :Toona (Endl.) M.J. Roemer pp. 492-499. Vitex L. pp. 502-509.
Lemmens, R.H.M.J. - \ 1995
In: Plant Resources of South-East Asia No 5(2). Timber trees: minor commercial timbers / Lemmens, R.H.M.J., Leiden : Backhuys Publishers
Shorea Roxb. ex Gaertner f. (red meranti, white meranti, yellow meranti, balau and red balau).
Kochummen, K.M. ; Wong, W.C. ; Fundter, J.M. ; Sosef, M.S.M. - \ 1993
In: Timber Trees - Major Commercial Timbers Wageningen : Pudoc (PROSEA 5-1) - p. 384 - 434.
Dryobalanops Gaertner f.
Lee, H.S. ; Wong, W.C. ; Ilic, J. ; Sosef, M.S.M. - \ 1993
In: Timber Trees - Major Commercial Timbers Wageningen : Pudoc (PROSEA 5-1) - p. 186 - 193.
Dipterocarpus Gaertner f.
Smitinand, T. ; Phengklai, C. ; Wong, W.C. ; Ilic, J. ; Groen, L.E. - \ 1993
In: Timber Trees - Major Commercial Timbers Wageningen : Pudoc (PROSEA 5-1) - p. 166 - 186.
Terminalia bellirica (Gaertner) Roxb.
Fundter, J.M. ; Graaf, N.R. de; Hildebrand, J.W. ; Valkenburg, J.L.C.H. van - \ 1991
In: PROSEA, no. 3: Dye and tannin-producing plants / Lemmens, R.H.M.J., Wulijarni-Soetjipto, N., Wageningen : Pudoc - p. 118 - 120.
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