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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    Ecologisch onderzoek Getij Grevelingen : Onderzoek naar de historische ontwikkeling van het watersysteem en inschatting van de autonome ontwikkeling vergeleken met getijscenario’s en effecten op Natura 2000-soorten en habitats bij gedempt getij
    Tangelder, Marijn ; Ysebaert, Tom ; Wijsman, Jeroen ; Janssen, John ; Mulder, Ingeborg ; Nolte, Arno ; Stolte, Willem ; Rooijen, Nils van; Boogaart, Lisanne van den; Arts, Floor ; Hoekstein, Mark ; Sluijter, Maarten ; Jagt, Helga van der; Kaardinaal, Edwin - \ 2019
    Yerseke : Wageningen Marine Research (Wageningen Marine Research rapport C089/19) - 230
    The SEEA EEA condition account for the Netherlands
    Lof, Marjolein ; Boogaart, Patrick ; Hein, Lars ; Jong, Rixt de; Schenau, Sjoerd - \ 2019
    Den Haag : CBS - 83
    Method of mechanically milking an animal and teat cup liner
    Leeuwen, J.L. van; Hogewerf, P.H. ; Ipema, A.H. ; Koning, C.J.A.M. de; Boogaart, J.G.M. van den; Turnhout, M.C. van - \ 2013
    Octrooinummer: WO2013137735, gepubliceerd: 2013-09-19.
    Method of mechanically milking a lactating animal, such as a cow, a goat and a sheep, comprising: providing an animal having at least one teat (110), said teat comprising an elongate shaft (112) and a teat end (114) at an end of said shaft, said teat end comprising a teat canal (116) having an external orifice (118); milking the teat (110) by repeatedly alternatingly increasing and decreasing a diameter (D) of at least a longitudinal portion of its shaft (112), while maintaining a substantially axi-symmetric shape of said portion of the shaft, and while continuously applying a milking vacuum to the teat end (114) so as to extract milk from the external orifice (118) of the teat canal (116). Also disclosed is a teat cup liner for practicing the disclosed method.
    A revision of Mnesithea (Gramineae - Rottboelliinae) in Malesia and Thailand
    Veldkamp, J.F. ; Boogaart, M.E.B. ; Heidweller, J. ; Klaauw, M.A.F. van der; Koning, R. de; Kraaijeveld, A.R. ; Sosef, M.S.M. ; Strucker, R.C.W. - \ 2013
    Blumea 58 (2013). - ISSN 0006-5196 - p. 277 - 292.
    A revision of Mnesithea (Gramineae – Rottboelliinae) in Malesia and Thailand showed that 11 species and 2 varieties occur. The suggestion that there would be a drought plant refuge in SE Borneo near Banjarmasin is supported.
    White book agenda of European high-tech food processing
    Bindrich, U. ; Linden, M. van der; Schmidgall, J. ; Siemer, C. ; Töpl, S. ; Hendricks, M. ; Plancken, I. Van der; Vervoort, L. ; Kolfschoten, R.C. ; Langelaan, H.C. ; Mastwijk, H. ; Thoden van Velzen, U. ; Boogaart, S. van den - \ 2013
    German Institue of Food Technologies (DIL - 55 p.
    Wetenschappelijke presentaties met Power-Point. Schadelijke software?
    Hertz, B. ; Woerkum, C. van; Kerkhof, P. - \ 2013
    In: Studies in taalbeheersing / Boogaart, R., Janssen, H., Assen : Van Gorcum - ISBN 9789023249917 - p. 125 - 134.
    Structure and function of the median finfold in larval teleosts
    Boogaart, J.G.M. van den; Muller, M. ; Osse, J.W.M. - \ 2012
    Journal of Experimental Biology 215 (2012). - ISSN 0022-0949 - p. 2359 - 2368.
    fish larvae - allometric growth - engraulis-mordax - dermal skeleton - danio-rerio - body-size - zebrafish - fin - behavior - hydrodynamics
    This paper offers a structural and mechanical analysis of the median finfold in larval teleosts. The median finfold is strengthened by bundles of collagen fibres, known as actinotrichia. We demonstrate that these structures contribute to increase the mass of backward accelerated water during swimming. The amount, dimensions, orientation and growth of actinotrichia were measured at various locations along the finfold in several developmental stages of common carp (Cyprinus carpio) and zebrafish (Danio rerio). Actinotrichia morphology, using light microscopy (e.g. diameter, orientation) and electron microscopy (which revealed their anchoring at proximal and distal ends), correlated with expected lateral forces exerted on the water during swimming. An analytical model is proposed that predicts the extent of camber from the oblique arrangement of the actinotrichia and curvature of the body. Camber of the finfold during swimming was measured from high-speed video recordings and used to evaluate the model predictions. Based on structural requirements for swimming and strain limits for collagen, the model also predicts optimal orientations of actinotrichia. Experimental data confirm the predictions of the model.
    The influence of vortex shedding from upstream obstacles on fish preferred holding locations
    Lacey, R.W.J. ; Boogaart, J.G.M. van den; Leeuwen, J.L. van - \ 2011
    Structure and function of the larval finfold
    Osse, J.W.M. ; Boogaart, J.G.M. van den - \ 2008
    In: Abstracts of the 4th International Conference of the Pan African Fish and Fisheries Association. - Addis Ababa, Ethiopia : - p. 67 - 67.
    Flow patterns of larval fish: undulatory swimming in the intermediate flow regime
    Müller, U.K. ; Boogaart, J.G.M. van den; Leeuwen, J.L. van - \ 2008
    Journal of Experimental Biology 211 (2008)2. - ISSN 0022-0949 - p. 196 - 205.
    locomotor function - rainbow-trout - vortex wake - dorsal fin - hydrodynamics - kinematics - zebrafish - forces - generation - morphology
    Fish larvae, like many adult fish, swim by undulating their body. However, their body size and swimming speeds put them in the intermediate flow regime, where viscous and inertial forces both play an important role in the interaction between fish and water. To study the influence of the relatively high viscous forces compared with adult fish, we mapped the flow around swimming zebrafish (Danio rerio) larvae using two-dimensional digital particle image velocimetry (2D-DPIV) in the horizontal and transverse plane of the fish. Fish larvae initiate a swimming bout by bending their body into a C shape. During this initial tail-beat cycle, larvae shed two vortex pairs in the horizontal plane of their wake, one during the preparatory and one during the subsequent propulsive stroke. When they swim `cyclically' (mean swimming speed does not change significantly between tail beats), fish larvae generate a wide drag wake along their head and anterior body. The flow along the posterior body is dominated by the undulating body movements that cause jet flows into the concave bends of the body wave. Patches of elevated vorticity form around the jets, and travel posteriorly along with the body wave, until they are ultimately shed at the tail near the moment of stroke reversal. Behind the larva, two vortex pairs are formed per tail-beat cycle (the tail beating once left-to-right and then right-to-left) in the horizontal plane of the larval wake. By combining transverse and horizontal cross sections of the wake, we inferred that the wake behind a cyclically swimming zebrafish larva contains two diverging rows of vortex rings to the left and right of the mean path of motion, resembling the wake of steadily swimming adult eels. When the fish larva slows down at the end of a swimming bout, it gradually reduces its tail-beat frequency and amplitude, while the separated boundary layer and drag wake of the anterior body extend posteriorly to envelope the entire larva. This drag wake is considerably wider than the larval body. The effects of the intermediate flow regime manifest as a thick boundary layer and in the quick dying-off of the larval wake within less than half a second
    Re-plumbing in a Mediterranean sponge
    Mendola, D. ; Boogaart, J.G.M. van den; Leeuwen, J.L. van; Wijffels, R.H. - \ 2007
    Biology Letters 3 (2007)6. - ISSN 1744-9561 - p. 595 - 598.
    Observations are reported for Dysidea avara sponges where once functioning oscula ( outlets) are converted through internal re-plumbing into functioning oversized ostia ( OSO; inlets). Flow tank studies employed high-speed photography and particle tracking of laser-illuminated 0.5 - 6.0 mu m diameter glass beads to trace particles streaming into OSO. A fluorescein dye/glass bead uptake experiment showed that an oversized ostium was connected through internal structures to the lone osculum. Beginning 30 s after uptake and continuing over a 20 min period, dye streamed from the osculum, but no beads emerged. Scanning electron microscopy revealed that beads were deposited only on the inhalant side of particle filtering choanocyte chambers and not on the exhalant side, suggesting that internal re-plumbing had occurred. Functioning OSO were also found on freshly collected specimens in the field, making it highly unlikely that formation of OSO was only an artefact of sponges being held in a laboratory tank.
    Electrical and percussive stunning of the common carp (Cyprinus carpio L.): Neurological and behavioural assessment
    Lambooij, E. ; Pilarczyk, M. ; Bialowas, H. ; Boogaart, J.G.M. van den; Vis, J.W. van de - \ 2007
    Aquacultural Engineering 37 (2007)2. - ISSN 0144-8609 - p. 171 - 179.
    catfish clarias-gariepinus - anguilla-anguilla l. - welfare aspects - fish - pain - slaughter - awareness - calves
    The overall objective of the study was to evaluate electrical and percussive stunning methods under laboratory conditions in common carps. The electrical current needed to induce a general epileptiform insult was assessed in 13 carps. The insult was obtained by delivering a current of 0.24 ± 0.03 A (163 ± 1 V; 50 Hz, a.c.) to the head, via scissor-model stunning tongs for approximately 1 s. The duration of the tonic, the clonic and the exhaustion phases were 11 ± 4 s, 5 ± 3 s and 20 ± 14 s on the EEG, respectively. An actual clonic phase was observed in two fish. The total duration of the insult was 31 ± 14 s. The heart rate was 22 ± 12 beats/min prior to stunning while after stunning, the ECG revealed fibrillation for 18 ± 7 s and was irregular. The behaviour of 10 individual carp, which were allowed to move freely in water, was recorded following head-only stunning (164 V, 0.23 ± 0.6 A). The duration of the tonic phase was approximately 10 s and the fish started fin movements after 48 ± 8 s and resumed swimming after 121 ± 83 s. A general epileptiform insult could be induced in carps (n = 25) by passing an electrical current through fresh water using 0.14 ± 0.03 A/dm2 (113 ± 17 V; electrode distance 16 cm) for 1 s at a water conductivity of 200 ¿S/cm. Twenty three carps were rendered unconscious and insensible during electrical stunning in fresh water, using 0.73 ± 0.05 A/dm2 (411 ± 2 V; electrode distance 16 cm) for 5 s at a water conductivity of 330 ¿S/cm, followed by chilling in ice water. As a second stunning procedure, carps were stunned mechanically using a percussion pistol at a maximal velocity of 10.99 ± 0.88 J. Evidence of unconsciousness and insensibility of the carps was provided by the appearance of theta, delta waves and spikes on the EEG, which were proceeded by no brain activity. However, two carp responded after 0.5 min to administered pain stimuli and one carp after 3 min. It may be concluded from this study that common carp are effectively stunned in fresh water. The application of an electrical current of 0.73 A/dm2 (26 V/cm, 50 Hz, a.c., 330 ¿S/cm) to individual carps in a tank in combination with chilling in ice water is an effective procedure for slaughter. The mechanical method of percussion stunning did not provide assurance of effective stunning as not all carp were unconscious and insensible after its administration.
    How fish larvae swim
    Müller, U.K. ; Boogaart, J.G.M. van den; Liu, H. ; Leeuwen, J.L. van - \ 2006
    - 1 p.
    Endurance exercise differentially stimulates heart and axial muscle development in zebrafish (Danio rerio)
    Meulen, T. van der; Schipper, H. ; Boogaart, J.G.M. van den; Huising, M.O. ; Kranenbarg, S. ; Leeuwen, J.L. van - \ 2006
    American Journal of Physiology. Regulatory, Integrative and Comparative Physiology 291 (2006). - ISSN 0363-6119 - p. R1040 - R1048.
    rainbow-trout - teleost fish - oncorhynchus-mykiss - brachydanio-rerio - erythropoietin - fibers - growth - performance - expression - ontogeny
    Mechanical load is an important factor in the differentiation of cells and tissues. To investigate the effects of increased mechanical load on development of muscle and bone, zebrafish were subjected to endurance swim training for 6 h/day for 10 wk starting at 14 days after fertilization. During the first 3 wk of training, trained fish showed transiently increased growth compared with untrained (control) fish. Increased expression of proliferating cell nuclear antigen suggests that this growth is realized in part through increased cell proliferation. Red and white axial muscle fiber diameter was not affected. Total cross-sectional area of red fibers, however, was increased. An improvement in aerobic muscle performance was supported by an increase in myoglobin expression. At the end of 10 wk of training, heart and axial muscle showed increased expression of the muscle growth factor myogenin and proliferating cell nuclear antigen, but there were major differences between cardiac and axial muscle. In axial muscle, expression of the "slow" types of myosin and troponin C was increased, together with expression of erythropoietin and myoglobin, which enhance oxygen transport, indicating a shift toward a slow aerobic phenotype. In contrast, the heart muscle shifts to a faster phenotype but does not become more aerobic. This suggests that endurance training differentially affects heart and axial muscle
    Zuurstofopname in de vroege ontwikkeling van vissen
    Leeuwen, J.L. van; Kranenbarg, S. ; Boogaart, J.G.M. van den; Muller, M. - \ 2006
    Aquacultuur 21 (2006)2. - ISSN 1382-2764 - p. 26 - 29.
    aquacultuur - visteelt - viskwekerijen - zuurstof - aquaculture - fish culture - fish farms - oxygen
    In een pas bevrucht vissenei is nog geen stelsel van bloedvaten aanwezig. Toch heeft de embryo zuurstof en andere voedingsstoffen nodig. De dooier blijkt een belangrijke rol te vervullen bij de opname van zuurstof
    Cyclic swimming in larval fish: from body wave to wake
    Müller, U.K. ; Boogaart, J.G.M. van den; Liu, H. ; Leeuwen, J.L. van - \ 2005
    In: SEB 2005 Abstracts, Annual main meeting of the society for experimental biology, 11-15 Juky 2005. - - p. S141 - S141.
    Verspreiding van vuur: aantonen voor je het ziet!
    Doorn, J. van; Pham, K.T.K. ; Paffen, A.M.G. ; Boogaart, P. van den; Kan, J.A.L. van - \ 2004
    BloembollenVisie (2004)29. - ISSN 1571-5558 - p. 20 - 21.
    bloembollen - plantenziekteverwekkende schimmels - schimmels - botrytis - gewasbescherming - epidemiologie - diagnostische technieken - ornamental bulbs - plant pathogenic fungi - fungi - botrytis - plant protection - epidemiology - diagnostic techniques
    In gezamenlijk onderzoek met PPO, PRI en Wageningen Universiteit werken onderzoekers aan een toets voor snelle waarneming van Botrytis-soorten in bolgewassen. Rubrieken in dit artikel: 1) Soorten vuur; 2) Tijdig waarnemen; 3) Geïntegreerd bestrijden; 4) Gemeenschappelijke aanpak onderzoek; 5) Toetsen en veldproeven. In een kader worden de botrytis-soorten in de bollenteelt vermeld
    Allometric Growth in Fish Larvae: Timing and Function
    Osse, J.W.M. ; Boogaart, J.G.M. van den - \ 2004
    In: The Development of Form and Function in Fishes and the Question of Larval Adaptation. - [S.l.] : American Fisheries Society - ISBN 9781888569582 - p. 167 - 194.
    Why fish larvae change gait during development
    Leeuwen, J.L. van; Müller, U.K. ; Boogaart, J.G.M. van den - \ 2004
    In: Abstracts of the Annual Main Meeting of the Society for Experimental Biology. - - p. S91 - S92.
    How fish larvae swim: lessons from flow fields and kinematics
    Müller, U.K. ; Boogaart, J.G.M. van den; Leeuwen, J.L. van - \ 2004
    In: Abstracts of the Annual Main Meeting of the Society for Experimental Biology, March 29th - April 2nd, 2004. - - p. S91 - S91.
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