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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Het kokkelbestand in de Nederlandse kustwateren in 2018
Asch, M. van; Brummelhuis, E.B.M. ; Ende, D. van den; Troost, K. ; Zweeden, C. van - \ 2018
IJmuiden : Stichting Wageningen Research, Centrum voor Visserijonderzoek (CVO) (CVO report 18.011) - 29
Cultivating change: How a Dutch university is working on a new agricultural revolution – to feed the world
Ende, Ernst van den; Marcelis, Leo ; Kema, Gert ; Zedde, Rick van de; Goot, Atze Jan van der - \ 2018
The influence of prey density and fish size on prey consumption in common sole (Solea solea L.)
Ende, Stephan Siegfried Werner ; Thiele, Rajko ; Schrama, Johan W. ; Verreth, Johan A.J. - \ 2018
Aquatic Living Resources 31 (2018). - ISSN 0990-7440
Alitta virens - Foraging - Functional response - Prey density - Solea solea

We examined the influence of prey density and fish size on prey consumption in common sole (Solea solea L.) foraging on buried ragworm Alitta virens (Sars) (formerly known as Nereis virens (Sars)). The tested prey densities of 0.8, 2.2, 4.3 and 6.5 individuals dm-2 were exposed to common soles of either 100 g or 300 g. At each prey density common sole foraged for 48 h. At both common sole classes studied, a positive correlation between prey consumption and prey density was observed (P < 0.001). Relationships however differed between 100 and 300 g common sole. In 300 g common sole the relationship between prey consumption and prey density was linear (P < 0.001), whereas in 100 g common sole the relationship between prey density and prey eaten was polynomial (P = 0.018). Small common sole reached satiety prey consumption rates at nearly every prey density while large common sole did not reach satiation rates even at highest prey densities. The data suggest that in nature, polychaetes such as A. virens may contribute to the diet of small common sole even when they are only moderately abundant. In contrast, polychaetes may not be an ideal prey for larger common sole as indicated by the absence of satiety regardless of prey density.

Mitochondrial dynamics in cancer-induced cachexia
Ende, Miranda van der; Grefte, Sander ; Plas, Rogier ; Meijerink, Jocelijn ; Witkamp, Renger F. ; Keijer, Jaap ; Norren, Klaske van - \ 2018
Biochimica et Biophysica Acta - Reviews on Cancer 1870 (2018)2. - ISSN 0304-419X - p. 137 - 150.
Animal models - Cancer-induced cachexia - Mitochondria - Mitochondrial dynamics - Muscle

Cancer-induced cachexia has a negative impact on quality of life and adversely affects therapeutic outcomes and survival rates. It is characterized by, often severe, loss of muscle, with or without loss of fat mass. Insight in the pathophysiology of this complex metabolic syndrome and direct treatment options are still limited, which creates a research demand. Results from recent studies point towards a significant involvement of muscle mitochondrial networks. However, data are scattered and a comprehensive overview is lacking. This paper aims to fill existing knowledge gaps by integrating published data sets on muscle protein or gene expression from cancer-induced cachexia animal models. To this end, a database was compiled from 94 research papers, comprising 11 different rodent models. This was combined with four genome-wide transcriptome datasets of cancer-induced cachexia rodent models. Analysis showed that the expression of genes involved in mitochondrial fusion, fission, ATP production and mitochondrial density is decreased, while that of genes involved ROS detoxification and mitophagy is increased. Our results underline the relevance of including post-translational modifications of key proteins involved in mitochondrial functioning in future studies on cancer-induced cachexia.

Technische Briefing Kringlooplandbouw; Notitie opgesteld op verzoek van de Tweede Kamer Commissie LNV : Wat mogen we verwachten van een circulaire voedselproductie gebaseerd op een kringlooplandbouw, in het perspectief van klimaat- en biodiversiteitdoelen?
Scholten, M.C.T. ; Bianchi, F.J.J.A. ; Boer, I.J.M. de; Conijn, J.G. ; Dijkstra, J. ; Doorn, A.M. van; Ende, J.E. van den; Fresco, L.O. ; Jongschaap, R.E.E. ; Kernebeek, H.R.J. van; Lesschen, J.P. ; Olde, E.M. de; Schulte, Rogier ; Termeer, C.J.A.M. ; Vorst, J.G.A.J. van der; Vos, J.A. de; Woltjer, G.B. - \ 2018
Wageningen University and Research - 14 p.
Ontwikkeling van bodemdieren in voor mosselzaad- en garnalenvisserij gesloten gebieden in de westelijke Waddenzee : evaluatie na drie jaar monitoring
Troost, Karin ; Stralen, Marnix van; Craeymeersch, Johan ; Ende, Douwe van den; Asch, Margriet van - \ 2018
Yerseke : Wageningen Marine Research (Wageningen Marine Research rapport C013/18) - 46
The influence of prey size, sediment thickness and fish size on consumption in common sole (Solea solea L.)
Ende, S.S.W. ; Schrama, J.W. ; Verreth, J.A.J. - \ 2018
Journal of Applied Ichthyology 34 (2018)1. - ISSN 0175-8659 - p. 111 - 116.
Alitta virens - Anti-predatory behavior - Flatfish - Polychaetes - Predation risk - Solea solea
This study determined prey consumption in common sole as a function of prey size (0-0.5, 1-1.5, 2-2.5 and 4-5 g), sediment thickness (20 cm and 2 cm) and fish size (50 g, 125 g or 300 g). Prey consumption (in numbers of prey eaten per fish per day) was reduced with increasing prey size and sediment thickness, and was increased with increasing fish size (p < .001 for all factors). All 3 factors showed significant two way interactions (p < .001) when expressed in numbers of prey eaten. Prey consumption decreased with prey size when prey could not escape by burying (2 cm of sediment thickness) irrespective of fish size. We suggest that increasing effort to ingest and handle larger prey played a role. Prey consumption increased with fish size when prey could not bury (2 cm of sediment thickness). However, when prey was able to bury (at 20 cm sediment thickness) prey consumption was similar irrespective of fish size (p < .001 for interaction fish size × sediment). This interaction suggests that with increasing fish size there is an increasing mismatch between foraging adaptation and prey burial depth. This may explain the dominance of crustaceans in the diet of adult common sole in nature, despite the high abundance of polychaetes.
Mosselbanken en oesterbanken op droogvallende platen in de Nederlandse kustwateren in 2017: bestand en arealen
Ende, D. van den; Troost, K. ; Asch, M. van; Brummelhuis, E. ; Perdon, J. ; Zweeden, C. van - \ 2017
IJmuiden : Wageningen UR, Stichting DLO, Centrum voor Visserijonderzoek (CVO) (CVO rapport 17.022) - 48
Bèta onderzoek lijdt onder groeiend aantal studenten
Ende, Ernst van den - \ 2017
This tiny country feeds the world
Ende, Ernst van den; Veloo, Ruud - \ 2017
Het kokkelbestand in de Nederlandse kustwateren in 2017
Troost, K. ; Asch, M. van; Brummelhuis, E.B.M. ; Ende, D. van den; Zweeden, C. van - \ 2017
Yerseke : Stichting Wageningen Research, Centrum voor Visserijonderzoek (CVO) (CVO rapport / Centrum voor Visserijonderzoek (CVO) 17.013) - 29
A matter of perception : The influence of waterborne signals from fish and conspecifics on the feeding related behavior of Alitta virens (Sars)
Ende, Stephan S.W. ; Capelle, Jacob ; Kals, Jeroen ; Schrama, Johan W. ; Verreth, Johan A.J. - \ 2017
Journal of Experimental Marine Biology and Ecology 496 (2017). - ISSN 0022-0981 - p. 91 - 96.
Alitta virens - Anti-predatory behavior - Flatfish - Polychaetes - Predation risk - Solea solea

The present study compares the influence of signals released from fish (common sole, Solea solea L.) and conspecifics on the feeding behavior of the ragworm Alitta virens (Sars) (formerly known as Nereis virens (Sars). Experimental tanks stocked with ragworms were connected to a donor tank by a tube to allow the transfer of water born signal molecules. The donor tanks were stocked with sole and ragworms to create 4 different treatments: “control (blank)”, “ragworms”, “sole” and “sole + ragworms”. All behavioral recordings were made at 19 random days out of a total of 31 feeding days. Video recordings were made each time for 30 minutes starting when first feed entered the tank. All behavioral responses, i.e. latency, numbers and length of ragworms out of burrow were negatively affected when ragworms were exposed to water from “sole + ragworms” donor tanks. When exposed to water from “ragworms” and “sole” donor tanks, the experimental ragworms also reduced their behavioral responses but to a lesser extent than when exposed to the combination of “sole + ragworm” donor tanks. Out-of-burrow activities remained hampered in ragworms exposed to water coming from “sole” and “sole + ragworms” donor tanks at all observation days. Results indicate that signals released by damaged conspecifics and to a lesser extent fish borne cues play an important role in anti-predatory behavior of A. virens.

The effect of food type (formulated diet vs. natural) and fish size on feed utilization in common sole, Solea solea (L.)
Ende, Stephan S.W. ; Kroeckel, Saskia ; Schrama, Johan W. ; Schneider, Oliver ; Verreth, Johan A.J. - \ 2017
Aquaculture Research 48 (2017)9. - ISSN 1355-557X - p. 4696 - 4706.
common sole - energy utilization efficiency - maintenance requirement - protein utilization efficiency - ration level - Solea solea
This study compares the effect of food type (formulated diet vs. natural food) and fish size on protein and energy utilization efficiencies for growth in common sole, Solea solea (L.). Replicate groups of common sole (mean initial body weight ± SD was 45.7 g ± 2.1 and 111.2 g ± 4.2) received the diets at five (natural feed) or four (formulated diet) feeding levels. The protein utilization efficiency for growth (kgCP) was higher (P > 0.001) in common sole fed ragworms than in common sole fed the formulated diet (respectively, 0.40 and 0.31). Likewise, the energy utilization efficiency for growth (kgGE) was higher (P = 0.001) in common sole fed ragworms than in common sole fed the formulated diet (respectively, 0.57 and 0.33). The protein maintenance requirement was not different between food types (P = 0.64) or fish size (P = 0.41) being on average 0.82 g kg−0.8 day−1. The energy maintenance requirement was not different between food type (P = 0.390) but differed between fish size (P = 0.036). The gross energy maintenance requirement of small common sole was 35 kJ g−0.8 day−1. The gross energy maintenance requirement of large common sole was 25 kJ g−0.8 day−1. In conclusion, the low growth of common sole fed formulated diets was related to reduced feed utilization.
KBWOT Fisheries: Remote mussel bed sensing
Troost, Karin - \ 2017
also D. van den Ende and S. Muecher
KBWOT Fisheries: Drone mapping of mussel beds
Troost, Karin - \ 2017
also S. Glorius, D. van den Ende, J. Franke, H. kramer, S. Muecher
Streptococcal Adhesin P (SadP) contributes to Streptococcus suis adhesion to the human intestinal epithelium
Ferrando, Maria Laura ; Willemse, Niels ; Zaccaria, Edoardo ; Pannekoek, Yvonne ; Ende, Arie van der; Schultsz, Constance - \ 2017
PLoS One 12 (2017)4. - ISSN 1932-6203

Background Streptococcus suis is a zoonotic pathogen, causing meningitis and septicemia. We previously demonstrated that the gastrointestinal tract (GIT) is an entry site for zoonotic S. suis infection. Here we studied the contribution of Streptococcal adhesin Protein (SadP) to hostpathogen interaction at GIT level. Methods SadP expression in presence of Intestinal Epithelial Cells (IEC) was compared with expression of other virulence factors by measuring transcript levels using quantitative Real Time PCR (qRT-PCR). SadP variants were identified by phylogenetic analysis of complete DNA sequences. The interaction of SadP knockout and complementation mutants with IEC was tested in vitro. Results Expression of sadP was significantly increased in presence of IEC. Sequence analysis of 116 invasive strains revealed five SadP sequence variants, correlating with genotype. SadP1, present in zoonotic isolates of clonal complex 1, contributed to binding to both human and porcine IEC and translocation across human IEC. Antibodies against the globotriaosylceramide Gb3/CD77 receptor significantly inhibited adhesion to human IEC. Conclusion SadP is involved in the host-pathogen interaction in the GIT. Differences between SadP variants may determine different affinities to the Gb3/CD77 host-receptor, contributing to variation in adhesion capacity to host IEC and thus to S. suis zoonotic potential.

Towards a sustainable sugarcane industry in India : baseline results on Solidaridad’s programme: Increasing water use efficiency in sugarcane growing in India
Plaisier, C. ; Rijn, F. van; Ende, H. van der; Koster, T. - \ 2017
Den Haag : Wageningen Economic Research (Wageningen Economic Research report 2017-051) - ISBN 9789463431965 - 109
Wageningen Economic Research conducts a study to evaluate the socioeconomic impact on sugarcane farmers of the Solidaridad programme. A pipeline approach was used, which clusters the farmers in cohorts based on the year they receive support and training: 2016, 2017 and 2018. A baseline survey was conducted on 1,008 farmers from the command areas in April 2016. This report gives a representative and detailed description of the target group in 2016.
Feral goats shape the Caribbean drylands
Holmgren, M. ; Coolen, Quirijn ; Debrot, A.O. ; Geurts, Kevin ; Metselaar, K. ; Oosterhuis, Henk-Jan ; Ende, Barry van den; Grinsven, Nikkie van; Hooft, W.F. van; Vergeer, Ascha - \ 2016
- 1 p.
Strong top-down goat effects on the semiarid Island of Bonaire
Grinsven, Nikkie van; Coolen, Quirijn ; Debrot, A.O. ; Geurts, Kevin ; Holmgren, M. ; Ende, Barry van den; Hooft, W.F. van - \ 2016
- 1 p.
Kweekvlees, insecten, zeewier - wat ligt er over vijf jaar op ons bord?
Dicke, Marcel ; Ende, Ernst van den; Woltering, Ernst ; Werf, Adrie van der - \ 2016

De groeiende wereldbevolking moet op zoek naar alternatieve voedselbronnen. NRC-redacteur Carlijn Vis bespreekt vier toekomstbestendige voedselsoorten.

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