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.

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A Diurnal Rhythm in Brown Adipose Tissue Causes Rapid Clearance and Combustion of Plasma Lipids at Wakening
Berg, Rosa van den; Kooijman, Sander ; Noordam, Raymond ; Ramkisoensing, Ashna ; Abreu-Vieira, Gustavo ; Tambyrajah, Lauren L. ; Dijk, Wieneke ; Ruppert, Philip ; Mol, Isabel M. ; Kramar, Barbara ; Caputo, Rosanna ; Puig, Laura Sardón ; Ruiter, Evelien M. de; Kroon, Jan ; Hoekstra, Menno ; Sluis, Ronald J. van der; Meijer, Onno C. ; Willems van Dijk, Ko ; Kerkhof, Linda W.M. van; Christodoulides, Constantinos ; Karpe, Fredrik ; Gerhart-Hines, Zachary ; Kersten, Sander ; Meijer, Johanna H. ; Coomans, Claudia P. ; Heemst, Diana van; Biermasz, Nienke R. ; Rensen, Patrick C.N. - \ 2018
Cell Reports 22 (2018)13. - ISSN 2211-1247 - p. 3521 - 3533.
angiopoietin-like 4 - APOE3-Leiden.CETP mice - brown adipose tissue - circadian rhythm - diurnal rhythm - fatty acids - lipoprotein lipase - postprandial lipid response - triglycerides
Many favorable metabolic effects have been attributed to thermogenic activity of brown adipose tissue (BAT). Yet, time of day has rarely been considered in this field of research. Here, we show that a diurnal rhythm in BAT activity regulates plasma lipid metabolism. We observed a high-amplitude rhythm in fatty acid uptake by BAT that synchronized with the light/dark cycle. Highest uptake was found at the onset of the active period, which coincided with high lipoprotein lipase expression and low angiopoietin-like 4 expression by BAT. Diurnal rhythmicity in BAT activity determined the rate at which lipids were cleared from the circulation, thereby imposing the daily rhythm in plasma lipid concentrations. In mice as well as humans, postprandial lipid excursions were nearly absent at waking. We anticipate that diurnal BAT activity is an important factor to consider when studying the therapeutic potential of promoting BAT activity. van den Berg et al. show a strong circadian rhythm in fatty acid uptake by brown adipose tissue that peaks at wakening regardless of the light exposure period. Consequently, postprandial lipid handling by brown adipose tissue is highest at wakening, resulting in the lowest postprandial plasma lipid excursions.
Panagrolobus vanmegenae, a new genus and species from The Netherlands and Ukraine, with taxonomic revision and two new species of the genus Teratolobus Andrássy, 1968 (Nematoda: Cephalobidae)
Holovachov, O.V. ; Boström, S. - \ 2006
Nematology 8 (2006)3. - ISSN 1388-5545 - p. 377 - 395.
pseudacrobeles steiner - thorne - redescription
Five species of the subfamily Acrolobinae, viz. Panagrolobus vanmegenae gen. n., sp. n., Teratolobus regulus Andrássy, 1968, T. obscurus sp. n., T. hamatus (Andrássy, 1986) comb. n. and T. similis sp. n., are described and illustrated from material collected in The Netherlands, Ukraine, Costa Rica, Mexico, Australia and South Africa. The new genus is characterised by a crown-shaped labial region with six well-developed, leaf-like lips having a biradial symmetry; lips separated by narrow and internally sclerotised U-shaped clefts; lateral lips half as wide as the subdorsal and subventral ones; a broad anisomorphic stoma; strongly sclerotised, hookshaped, cheilorhabdia; a strongly developed dorsal prostegorhabdion extending inside the stegostom cavity; a conoid tail with a rounded terminus bearing a dorsally curved, hook-like, mucro; and phasmids located at 70-90% of tail length. Teratolobus obscurus sp. n. is distinguished from the closely related T. regulus by the following characters: a smaller spermatheca (7.0-14.5 vs 26-61 ¿m); a shorter PUB (12-19 vs 18-42 ¿m); a shorter female tail (42-50 vs 55-72 ¿m); and differently shaped mucro on the tail terminus (harpoon-like vs hook-like). Teratolobus similis sp. n. is distinguished from the closely related T. baloghi (Andrássy, 1986) comb. n. by the following characters: a smaller body (350-420 vs 470-480 ¿m); a shorter PUB (9-12 vs 35-38 ¿m; 0.5-0.8 vs ca. 2 VBD long); shorter female tail (41-53 vs 62-65 ¿m; c¿ = 3.4-5.4 vs 6.5-7.0); and differently shaped mucro on the tail terminus (arrowhead-like vs finely forked). Based on current research, a revision is proposed of the taxonomy of the genus Teratolobus and the subfamily Acrolobinae. The following new combinations are proposed: Teratolobus baloghi; T. hamatus; and T. occultus (De Ley & Coomans, 1990) comb. n. Panagroteratus is proposed as a synonym of Teratolobus
The genus Deficephalobus De Ley & Coomans, 1990 (Cephalobina: Osstellidae) from nature reserves in Costa Rica
Holovachov, O.V. ; Esquivel, A. ; Bongers, A.M.T. - \ 2005
Nematology 7 (2005)3. - ISSN 1388-5545 - p. 469 - 477.
Two species of the genus Deficephalobus, D. mirabilis sp. n. and D. desenderi, are described and illustrated on the basis of material collected in Costa Rica. The new species is characterised by 0.67-1.2 mm long body; bluntly rounded labial region; amphidial aperture one-third of labial region diam. wide; cheilostom barrel-shaped with sclerotised, bar-shaped, cheilorhabdia; gymnostom barrel-shaped with moderately sclerotised lining of gymnostom; stegostom funnel-shaped anteriorly, narrow tubular posteriorly and subdivided into four sets of rhabdia; basal bulb elongate ovoid with weakly developed valvular apparatus; excretory pore opening anterior to nerve ring; ovary tip almost reaching the level of rectum, large spermatheca, postvulval uterine sac shorter than vulval body diameter; female tail elongate conoid and straight, with filiform tail terminus; male tail short conoid with small, ragged, terminal mucro
Two new species of the genus Aphanonchus Coomans & Raski, 1991 (Nematoda: Aphanolaimidae) and a revised taxonomy of the genus
Holovachov, O.V. ; Sturhan, D. - \ 2004
Nematology 6 (2004)3. - ISSN 1388-5545 - p. 357 - 373.
free-living nematodes - araeolaimida
Two new species of Aphanonchus are described from Germany and Ivory Coast. Aphanonchus europaeus sp. n., from Germany, is best characterised by 1.1 - 1.4 mm long body, presence of 50-96 lateral epidermal glands; female without neck setae, with straight vagina without sclerotisations and three to nine prevulval alveoli; male with a pair of neck setae, 15 tubular and 20 alveolar supplements, one pair of precloacal and four pairs of caudal setae, 39 mum long spicules. Aphanonchus africanus sp. n., from Ivory Coast, is characterised by 1.0-1.3 mm long body, presence of 37 to 71 lateral epidermal glands; female with a pair of neck setae, straight to slightly sinuous vagina without sclerotisations, and without alveoli; male with a pair of neck setae, 12-18 tubular and 54-80 alveolar supplements, a pair of precloacal and four pairs of caudal setae, 35.5-43 mum long spicules. Morphological data, based on specimens of A. bayensis from Costa Rica, A. multipapillatus from Colombia and Suriname, A. obesus from Ivory Coast and the type locality in Vietnam, and type specimens of A. longiceras, are presented and supplement the descriptions of these four species. An emended diagnosis and a revised classification of Aphanonchus are proposed and a key to the species of the genus is provided.
Tussenrapportage Kwaliteit Verse Vis in de Keten
Coomans, E. ; Schelvis-Smit, A.A.M. ; Luten, J.B. ; Roest, J. van der; Verdenius, F. - \ 2003
IJmuiden : RIVO (RIVO rapport C010/03) - 62
visproducten - kwaliteit - veiligheid - voedselveiligheid - agro-industriële ketens - kennisoverdracht - kennissystemen - ecotoxicologie - fish products - quality - safety - food safety - agro-industrial chains - knowledge transfer - knowledge systems - ecotoxicology
In de verse vis keten van visser tot en met consument is behoefte aan inzicht in de kwaliteit en veiligheid van de visproducten. Dit inzicht kan worden verkregen door het uitwisselen van essentiële informatie tussen de betreffende schakels. De noodzaak voor deze informatie-vergaring en - uitwisseling wordt door de actoren in de keten onderschreven. Er zijn reeds initiatieven gestart en modellen ontwikkeld om deze wens gestalte te geven. Op Europees niveau is een tweetal Concerted Action projecten geïnitieerd genaamd Fish Quality Labelling and Monitoring (CA-FQLM) en TRACEFISH, waarbij diverse visonderzoeksinstituten en visketen actoren samenwerken over de invoering van traceerbare kwaliteitsindices van verse vis.Binnen deze inventarisatie ligt het accent op de vissoort schol (Pleuronectes platessa), één van de belangrijkste vissoorten voor de Nederlandse verse vis sector. De aldus vergaarde kennis en praktijkervaring kan ook gebruikt worden voor andere vissoorten.
Transparancy in chains and networks: a research orientation
Coomans, E. ; Beulens, A.J.M. ; Trienekens, J.H. ; Dorp, K. van - \ 2002
In: Proc. of the 5th International Conference on Chain and Network Management in Agribusiness and the Food Industry. - Wageningen : Wageningen Academic Publishers, 2002 - p. 1142 - 1147.
Free-living nematodes from nature reserves in Costa Rica. 3. Araeolaimida
Zullini, A. ; Loof, P.A.A. ; Bongers, T. - \ 2002
Nematology 4 (2002)6. - ISSN 1388-5545 - p. 709 - 724.
descriptions - new species - redescriptions - Plectus - Costa Rica - Araeolaimidae - free living nematodes - nematoda - taxonomy - beschrijvingen - nieuwe soorten - herbeschrijvingen - vrijlevende nematoden - Nematoda - taxonomie
Seven species of Araeolaimida were found in soil, moss and freshwater habitats of tropical forests in Costa Rica. Three are described as new. Anonchus pulcher n. sp. is characterised by slender body, lip region demarcated by a depression, presence of ca 45-60 sublateral glands on each side of the body and monoprodelphic female genital apparatus. Paraplectonema americanum n. sp. lacks somatic setae, the stoma is 3.0-3.4 lip region diameter long, the female rectum measures 26 μm, the male tail 137-153 μm, presence of ten to 11 male supplements, spicula 28-30 μm long, gubernaculum of complicated shape with a caudal apophysis. Chronogaster costaricae n. sp. is characterised by absence of longitudinal incisures, rows of spines, crystalloids and vacuolated glandular bodies, terminus with open mucro with one or two basal spines. The species redescribed, either briefly for well known, or more extensively for less well known, species are: Plectus patagonicus de Man, 1904; P. indicus Khera, 1972; Chronogaster serrulata Loof, 1973 and C. cameroonensis Heyns & Coomans, 1984.
Transparency in chains and networks: a research orientation
Coomans, E. ; Beulens, A.J.M. ; Trienekens, J. ; Dorp, K. van - \ 2002
In: Proceedings of the 5th International Conference on Chain and Network Management in Agribusiness and the Food Industry: Paradoxes in food chains and networks, The Netherlands, Noordwijk aan Zee, 6-8 June, 2002 Wageningen : Wageningen Academic Publishers - ISBN 9789076998091 - p. 1142 - 1147.
MKB in een virtuele organisatie. Klict rapport OP104
Dorp, C.A. van; Dijk, S. van; Coomans, E. ; Beulens, A.J.M. - \ 2002
KLICT
On five species of the genus Xiphinema Cobb, 1913 (Nematoda: Longidoridae) recently described from India
Loof, P.A.A. ; Coomans, A. ; Baujard, P. ; Luc, M. - \ 2001
Nematology 3 (2001)3. - ISSN 1388-5545 - p. 277 - 283.
morphology - synonyms - synonymy - taxonomic status - invertebrates - animals - eukaryotes - Xiphinema - Longidoridae - nematoda - taxonomy - Xiphinema brevicolle - morfologie - synoniemen - synonymie - taxonomische status - ongewervelde dieren - dieren - eukaryoten - Nematoda - taxonomie
Examination of paratypes of five species of Xiphinema from India described by Singh and Khan (1998) led to the following conclusions: X. larliani appears a valid species close to X. simillimum. The other four species are considered junior synonyms, X. digicaudatum of X. brasiliense; X. gracilicaudatum of X. radicicola; X. arunachalense of X. brevicollum [X. brevicolle]; X. pruni of X. basiri. Complementary morphological data, measurements and illustrations based on the paratypes are given for the five species.
Redescription of Xiphinema nigeriense Luc, 1961 and observations on X. dihysterum Lamberti et al., 1995 and X. mampara Heyns, 1979 (Nematoda: Dorylaimida)
Coomans, A. ; Loof, P.A.A. ; Luc, M. - \ 1999
Nematology 1 (1999)1. - ISSN 1388-5545 - p. 85 - 94.
The Xiphinema americanum-group (Nematoda: Longidoridae). 2. Observations on Xiphinema brevicollum Lordello & da Costa, 1961 and comments on the group.
Luc, M. ; Coomans, A. ; Loof, P.A.A. ; Baujard, P. - \ 1998
Fundamental and applied nematology 21 (1998)5. - ISSN 1164-5571 - p. 475 - 490.
Cloning of two endoglucanase genes from Heterodera schachtii.
Meutter, J. de; Tytgat, T. ; Schueren, E. van der; Smant, G. ; Schots, A. ; Coomans, A. ; Montagu, M. van; Gheysen, G. - \ 1998
In: 24th International Symposium on Crop Protection, Dundee, UK - p. 24 - 24.
Cloning of two endoglucanase genes from Heterodera schachtii.
Meutter, J. de; Tytgat, T. ; Schueren, E. van der; Smant, G. ; Schots, A. ; Coomans, A. ; Montagu, M. van; Gheysen, G. - \ 1998
Nematologica 44 (1998). - ISSN 0028-2596 - p. 479 - 480.
The Xiphinema americanum group (Nematoda: Dorylaimida). 1. Comments upon the key to species published by Lamberti and Carone (1992).
Loof, P.A.A. ; Luc, M. ; Coomans, A. - \ 1993
Fundamental and applied nematology 16 (1993). - ISSN 1164-5571 - p. 355 - 358.
Terrestrial nematodes from the Galápagos Archipelago 2: Redescription of Aporcelaimellus obtusicaudatus (Bastian, 1865) Altherr, 1968, with review of similar species and a nomenclature for the vagina in Dorylaimida (Nematoda).
Ley, P. de; Loof, P.A.A. ; Coomans, A. - \ 1993
Biologie. Koninklijk Belgisch Instituut voor Natuurwetenschappen 63 (1993). - p. 13 - 34.
Status of the genera Paractinolaimus Meyl, 1957, Trachypleurosum Andrássy, 1959 and Trachactinolaimus Andrássy, 1963 (Nematoda: Actinolaimidae) with description of Trachypleurosum venezolanum n.sp.
Coomans, A. ; Vinciguerra, M.T. ; Loof, P.A.A. - \ 1990
Revue Nématologie 13 (1990). - p. 143 - 154.
On the use of the generic name Macroposthonia de Man, 1880 (Nemata: Criconematidae).
Coomans, A. ; Grisse, A. de; Geraert, E. ; Loof, P.A.A. ; Luc, M. ; Raski, D.J. - \ 1990
Revue Nématologie 13 (1990). - p. 120 - 120.
The genus Paradorylaimus Andrassy, 1969. (Dorylaimoidea: Nematoda).
Loof, P.A.A. ; Coomans, A. - \ 1986
Hydrobiologia 133 (1986). - ISSN 0018-8158 - p. 179 - 186.
Redescription of Actinolaimus costatus Schneider, 1935 with observations on its pharyngosomatic muscles and discussion of its taxonomic position.
Coomans, A. ; Loof, P.A.A. - \ 1986
Revue de Nématologie 9 (1986). - ISSN 0183-9187 - p. 221 - 231.
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