Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    '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.

    We have a manual that explains all the features 

Records 1 - 50 / 263

  • help
  • print

    Print search results

  • export
    A maximum of 250 titles can be exported. Please, refine your queryYou can also select and export up to 30 titles via your marked list.
  • alert
    We will mail you new results for this query: q=Kik
Check title to add to marked list
Postmortaal onderzoek van bruinvissen (Phocoena phocoena) uit Nederlandse wateren, 2018 : Biologische gegevens, gezondheidsstatus en doodsoorzaken
IJsseldijk, L.L. ; Kik, M.J.L. ; Gröne. A., - \ 2019
Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-technical report 150) - 44
This annual report present the results of post-mortem examinations of porpoises (Phocoena phocoena) in 2018. In 2018, 50 dead harbour porpoises were examined: 32 males and 18 females, including 16 adults, 31 juveniles and 3 neonates. Most of the harbour porpoises examined died as a result of infectious diseases and grey seal attacks (both 28%), followed by probable bycatch (16%).
Acquisition and regeneration of Spinacia turkestanica Iljin and S. tetrandra Steven ex M. Bieb. to improve a spinach gene bank collection
Treuren, R. van; Groot, E.C. de; Kik, C. ; Hisoriev, H. ; Khassanov, F. ; Farzaliyev, V. ; Melyan, G. ; Soest, L.J.M. ; Tulmans, C. ; Visser, J. de; Kimura, R. ; Boshoven, J.C. ; Kanda, T. ; Goossens, R. ; Verhoef, M. ; Dijkstra, Jan - \ 2019
Genetic Resources and Crop Evolution (2019). - ISSN 0925-9864 - 11 p.
Spinach (Spinacia oleracea L.) is a highly nutritious leafy vegetable and an economically important food crop. The wild species S. turkestanica Iljin and S. tetrandra Steven ex M. Bieb. are inter-fertile with cultivated spinach and constitute important sources of novel characters to improve spinach varieties, such as for their resistance to pests and diseases. Despite their relevance in plant breeding, S. turkestanica and S. tetrandra are poorly represented in genetic resources collections. Among the reasons for these collection gaps are the difficulties in propagating these species ex situ. Here we report on the results of collecting expeditions for S. turkestanica in Central Asia and for S. tetrandra in the Trans-Caucasus, which were organized by the Dutch gene bank in collaboration with several breeding companies. Furthermore, we also present efficient protocols for the ex situ regeneration of these species. These protocols were used to successfully regenerate 66 S. turkestanica and 36 S. tetrandra samples from the collecting expeditions. These new accessions fill up important collection gaps in ex situ conserved genetic resources of spinach and can be used for exploitation in crop improvement.
De Oerakker: a platform facilitating the conservation and use of old Dutch varieties
Kik, C. ; Bas, N. ; Dooijeweert, W. van; Menting, F.B.J. - \ 2019
Landraces 2019 (2019)4. - p. 19 - 20.
A historic overview of the Dutch efforts concerning the conservation and use of old crop varieties is presented. Also attention is given to the current efforts to properly describe, multiply and market Dutch heritage varieties in order to maintain this precious material in a sustainable manner.
De Zoe en de zeekoet : een onderzoek naar de doodsoorzaak en de herkomst van de zeekoeten die massaal strandden op de Nederlandse kust in januari en februari 2019
Leopold, Mardik F. ; Kik, Marja ; Tulden, Peter van; Franeker, Jan Andries van; Kühn, Suzanne ; Rijks, Jolianne - \ 2019
Den Helder : Wageningen Marine Research (Wageningen Marine Research rapport C026/19) - 59
Highlights uit een jaar genenbankieren
Kik, Chris ; Bas, Noortje - \ 2019

De CGN collecties worden voortdurend verbeterd door het toevoegen van nieuw materiaal. De zaadvoorraad en de kwaliteit van de zaden wordt op peil gehouden door het materiaal te vermeerderen als de zaden opraken of hun kiemkracht verliezen. Een aantal highlights uit 2018.

Zaden in een poolkluis
Kik, Chris ; Groot, Liesbeth de - \ 2019
Phylogeographic distribution of human and hare Francisella tularenses susp. holarctica strains in the Netherlands and its pathology in European brown hares (Lepus europaeus)
Koene, M.G.J. ; Rijks, Jolianne M. ; Maas, Miriam ; Ruuls, R.C. ; Engelsma, M.Y. ; Tulden, P.W. van; Kik, Marja ; IJzer, Jooske ; Notermans, Daan ; Vries, Maaike de; Fanoy, Ewout ; Pijnacker, Roan ; Spierenburg, Marcel A.H. ; Bavelaar, Herjan ; Berkhout, Hanneke ; Sankatsing, Sanjay ; Diepersloot, Rob ; Myrtennas, Kerstin ; Granberg, Malin ; Forsman, Mats ; Roest, H.I.J. ; Gröne, Andrea - \ 2019
Frontiers in Cellular and Infection Microbiology 9 (2019). - ISSN 2235-2988 - 11 p.
Sequence-based typing of Francisella tularensis has led to insights in the evolutionary developments of tularemia. In Europe, two major basal clades of F. tularensis subsp. holarctica exist, with a distinct geographical distribution. Basal clade B.6 is primarily found in Western Europe, while basal clade B.12 occurs predominantly in the central and eastern parts of Europe. There are indications that tularemia is geographically expanding and that strains from the two clades might differ in pathogenicity, with basal clade B.6 strains being potentially more virulent than basal clade B.12. This study provides information on genotypes detected in the Netherlands during 2011–2017. Data are presented for seven autochthonous human cases and for 29 European brown hares (Lepus europaeus) with laboratory confirmed tularemia. Associated disease patterns are described for 25 European brown hares which underwent post-mortem examination. The basal clades B.6 and B.12 are present both in humans and in European brown hares in the Netherlands, with a patchy geographical distribution. For both genotypes the main pathological findings in hares associated with tularemia were severe (sub)acute necrotizing hepatitis and splenitis as well as necrotizing lesions and hemorrhages in several other organs. Pneumonia was significantly more common in the B.6 than in the B.12 cases. In conclusion, the two major basal clades present in different parts in Europe are both present in the Netherlands. In hares found dead, both genotypes were associated with severe acute disease affecting multiple organs. Hepatitis and splenitis were common pathological findings in hares infected with either genotype, but pneumonia occurred significantly more frequently in hares infected with the B.6 genotype compared to hares infected with the B.12 genotype.
Veel activiteiten en een nieuwe voorzitter bij de Oerakker
Kik, Chris - \ 2019

Tijdens de jaarlijkse najaarsbijeenkomst van Stichting de Oerakker op 22 november 2018 heeft Obe Bootsma afscheid genomen als voorzitter. Rob Plomp werd gepresenteerd als de nieuwe voorzitter. Daarnaast werden er voor de 40 deelnemers interessante presentaties en workshops gegeven, die aanleiding gaven tot veel discussie.

Francisella tularensis isolated from human clinical infections
Koene, M.G.J. ; Rijks, Jolianne M. ; Maas, Miriam ; Ruuls, R.C. ; Engelsma, M.Y. ; Tulden, P.W. van; Kik, Marja ; IJzer, Jooske ; Notermans, Daan ; Vries, Maaike de; Fanoy, Ewout ; Pijnacker, Roan ; Spierenburg, Marcel A.H. ; Bavelaar, Herjan ; Berkhout, Hanneke ; Sankatsing, Sanjay ; Diepersloot, Rob ; Myrtennas, Kerstin ; Granberg, Malin ; Forsman, Mats ; Roest, H.I.J. ; Gröne, Andrea - \ 2018
PRJEB27514 - ERP109601 - Francisella tularensis
Genome sequences of Francisella tularensis samples, isolated from human infections in the Netherlands in 2015 and 2016.
Internationale cursus plantaardige genetische bronnen wordt goed gewaardeerd
Kik, Chris ; Brink, Martin - \ 2018

In deze cursus wordt inzicht gegeven hoe plantaardige genetische bronnen beheerd kunnen worden. Daarnaast wordt de huidige internationale wet en regelgeving m.b.t. uitwisseling van genetische bronnen behandeld.

On the possibility to determine the frequency of disease resistance genes involved in (multiple) gene-for-gene resistance via molecular markers in order to optimize sampling sizes in collecting missions : Internal report
Kik, C. - \ 2018
Allium genetic resources
Keller, E.R.J. ; Kik, C. - \ 2018
In: The Allium genomes / Shigyo, M., Khar, A., Abdelrahman, M., - p. 23 - 52.
An overview of the developments in Allium genetic resources during the past 25 years is presented in this chapter. A first important development has been the introduction and further development of web-based genebanking information systems (e.g. GENESYS, PLANTSEARCH), which facilitated the exchange of data to a large extent between Allium collection holders worldwide. These information systems made it possible to obtain an overview of the Allium genetic resources managed worldwide and identify the gaps in collections which still need to be filled, especially in the face of the ongoing genetic erosion. A second important area of progress has been the development of new methods for the maintenance of Allium germplasm, especially cryopreservation. This method has made it possible to maintain Allium accessions in a cheap and effective way. The method is especially important for the conservation of vegetatively maintained germplasm. Other developments in Allium genebanking are the improvement of the health status of the germplasm kept in the collections and the continuing characterization and evaluation of germplasm, which stimulates the utilization of the Allium genetic resources held in genebanks. Significant changes could also be observed with respect to acquisition and exchange of plant genetic resources due to many and complex new regulations on the legal and organizational levels due to the adoption of the CBD and IT-PGRFA by many countries. It makes the handling of the plant accessions safer and more consistent but also more circumstantial. Finally, we need to underline that in an increasingly changing world with all the threats of genetic erosion and extinction due to disappearance of traditional cultivation methods, devastation of our environment and climatic change, the conservation of genetic resources is of prime importance for agriculture. Especially for breeders, a highly diverse genepool of a crop plant is an invaluable treasure. The importance to keep this treasure will no doubt become even more important in the future.
Traditionele groenten, Oranje lijst en Erfgoedzaden
Kik, Chris - \ 2018
Dag van het Levend Erfgoed te Harich
Kik, Chris - \ 2018
Zitting in een forum op de Dag van het Levend Erfgoed te Harich, waarbij de huidige stand van zaken en de toekomst omtrent Friese Rassen is besproken.
Rondleiden in genenbank van Turkse delegatie
Kik, Chris - \ 2018
Rondleiden in genenbank van Turkse delegatie in het kader van ‘Development of seed sector in central anatolian region. Project-II: Germany-Netherlands foreign trade activity’
Plant genebanking: the Dutch national genebank CGN
Kik, Chris - \ 2018
Food Security, biodiversity and genebanks
Kik, Chris - \ 2018
Borgen van onze voedselzekerheid: hoe kunnen genenbanken en botanische tuinen elkaar vinden
Kik, Chris - \ 2018
Advies toetsingskader positieflijst zoogdieren
Hellebrekers, L.J. ; Staman, Jan ; Boer, Sietse de; Foppen, R. ; Kik, Marja ; Knapen, F. van; Koolhaas, J. ; Lammertsma, D.R. ; Zeeland, Yvonne van; Peet, G.F.V. van der; Hopster, H. - \ 2018
- 28 p.
animal welfare - pets - hobby animals - animal housing - animal health - animal behaviour - animal nutrition
Het Ministerie van Landbouw, Natuur en Voedselkwaliteit (LNV) beoogt invulling te geven aan een lijst met diersoorten die door eenieder in of om het huis gehouden mogen worden (‘de Positieflijst’).
Daartoe heeft LNV in de herfst van 2017 een groep onafhankelijke wetenschappelijk deskundigen gevraagd op persoonlijke titel te participeren in een Wetenschappelijke Adviescommissie Positieflijst (WAP).
LNV heeft de WAP de opdracht verstrekt om te adviseren over een vereenvoudigde, wetenschappelijk valide, toetsingskader voor de positieflijst huisdieren. Randvoorwaarden hierbij zijn dat de systematiek voldoende goed uitvoerbaar is (eenvoudig, tijd- en kostenefficiënt) én dat de systematiek voldoet aan de Nederlandse en Europese wettelijke vereisten en aan wetenschappelijke validiteit.
De taken van de adviescommissie bestaan uit:
• het ontwikkelen van het toetsingskader;
• het opstellen van inhoudelijke criteria als onderscheidende basis voor het toetsingskader;
• de wetenschappelijke onderbouwing van de criteria van het toetsingskader;
• de onderlinge weging van de criteria.
Het resultaat van deze opdracht is een advies over een toetsingskader dat wetenschappelijk goed is onderbouwd en praktisch bruikbaar is om diersoorten naar potentiële risico’s te identificeren en vervolgens te ordenen. De systematiek dient te kunnen worden toegepast op zoogdieren, maar kan tevens als basis dienen voor de beoordeling van vogels, reptielen en amfibieën.
LNV heeft de WAP gevraagd de intrinsieke waarde, zoals omschreven in de Wet Dieren, als uitgangspunt te nemen bij de ontwikkeling van het toetsingskader. Het welzijnsbegrip in het toetsingskader omvat, naast diergezondheid, ook de mogelijkheid om natuurlijk gedrag te vertonen en de fysieke integriteit.
De beoordeling volgens het toetsingskader leidt tot een lijst van diersoorten die zijn gerangschikt naar potentiële risico’s voor dierenwelzijn/diergezondheid en voor gevaar (zoönosen, letsel) voor mens en dier.
In de spinazie op jouw bord, zitten genen die ik verzameld heb
Kik, Chris - \ 2018
Op jacht naar sterke zaden
Kik, Chris - \ 2018

Onderzoeker en "seed hunter" Chris Kik reist de hele wereld over om wilde groente zaden te zoeken. Dankzij die zaden kunnen we sterke groenten kweken. Hoe zit dat precies?

Spinazie in de schappen duurzamer dankzij Wageningse verzamelexpedities
Kik, C. - \ 2018
Wageningen :
Rapid loss of seed viability in ex situ conserved wheat and barley at 4°C as compared to −20°C storage
Treuren, R. van; Bas, N. ; Kodde, J. ; Groot, S.P.C. ; Kik, C. - \ 2018
Conservation Physiology 6 (2018)1. - ISSN 2051-1434
Genebanks aim to optimize their storage conditions in order to postpone seed ageing as long as possible. As most genebanks have a relatively short life history, empirical data about seed longevity during ex situ storage are almost absent. Based on seed characteristics, theoretical predictions indicate that cereal seeds can be stored without substantial loss of viability for time periods exceeding 100 years, even under temperatures of a few degrees above zero. Here we present the results of a germination study in wheat and barley, comparing genebank seed samples maintained at different temperatures for 23–33 years. Wheat and barley seed samples stored at −20°C showed a mean germination of 94% and 90%, respectively, indicating no loss of the initial viability determined for the accessions prior to introduction in the collection. Seed samples maintained at 4°C showed a mean germination of 62% for wheat and 75% for barley. In addition to the observed loss of viability, the 4°C samples also showed a loss in vigour as the time period to reach their final germination was about twice as long compared to the −20°C samples. A subset of the wheat accessions tested in 2011 were retested in 2017, showing further reduction in mean germination to 35% for the 4°C samples, while the −20°C samples remained stable at 95%. Several 4°C samples were even close to a complete loss of viability. Considering that wheat and barley are generally regarded as good maintainers, the rapid loss of seed viability observed in the present study indicates that the ex situ seed storage of genetic resources at 4°C should be treated with caution by genebanks, particularly when used for long-term conservation.
A comparison of UVb compact lamps in enabling cutaneous vitamin D synthesis in growing bearded dragons
Diehl, J.J.E. ; Baines, F.M. ; Heijboer, A.C. ; Leeuwen, J.P. van; Kik, M. ; Hendriks, W.H. ; Oonincx, D.G.A.B. - \ 2018
Journal of Animal Physiology and Animal Nutrition 102 (2018)1. - ISSN 0931-2439 - p. 308 - 316.
25(OH)D - Lizard - Pogona vitticeps - Reptile - Ultraviolet light - Vitamin D - Vitamin D metabolites

The effect of exposure to different UVb compact lamps on the vitamin D status of growing bearded dragons (Pogona vitticeps) was studied. Forty-two newly hatched bearded dragons (<24 h old) were allocated to six treatment groups (n = 7 per group). Five groups were exposed to different UVb compact lamps for two hours per day, with a control group not exposed to UVb radiation. At 120 days of age, blood samples were obtained and concentrations of 25(OH)D3, Ca, P and uric acid were determined. In addition, plasma 25(OH)D3 concentration was determined in free-living adult bearded dragons to provide a reference level. Only one treatment resulted in elevated levels of 25(OH)D3 compared to the control group (41.0 ± 12.85 vs. 2.0 ± 0.0 nmol/L). All UVb-exposed groups had low 25(OH)D3 plasma levels compared to earlier studies on captive bearded dragons as well as in comparison with the free-living adult bearded dragons (409 ± 56 nmol/L). Spectral analysis indicated that all treatment lamps emitted UVb wavelengths effective for some cutaneous vitamin D synthesis. None of these lamps, under this regime, appeared to have provided a sufficient UVb dose to enable synthesis of plasma 25(OH)D3 levels similar to those of free-living bearded dragons in their native habitat.

Postmortaal onderzoek van bruinvissen (Phocoena phocoena) uit Nederlandse wateren, 2017 : biologische gegevens, gezondheidsstatus en doodsoorzaken
IJsseldijk, L.L. ; Kik, M.J.L. ; Gröne, A. - \ 2017
Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-technical report 116) - 49
This annual report present the results of post-mortem examinations of porpoises (Phocoena phocoena) in 2017. One of the main objectives of the research is to quantify human-induced causes of death. In 2017, 55 dead harbour porpoises were examined: 25 males and 30 females, including 22 adults, 26 juveniles and 7 neonates. Most of the harbour porpoises examined died as a result of infectious diseases (36%), bycatch (20%) or grey seal attacks (18%). The proportion of animals dying of infectious diseases was higher in 2017 than in previous years.
Vergeten groenten doen het goed bij stadsmensen die snakken naar authentieke ervaringen – maar de business is niet eenvoudig
Kik, Chris - \ 2017
Een Andijker muis op je bord: oude groenterassen
Kik, Chris - \ 2017
Word jij ook zaadvermeerderaar?
Kik, Chris - \ 2017
Report of a melon collecting expedition in Uzbekistan
Kik, C. ; Esankulov, A. - \ 2017
Wageningen : Wageningen UR, Centre for Genetic Resources (CGN report 39) - 26 p.
Report of a Lactuca aculeata collecting expedition in Jordan
Kik, C. ; Abulaila, K. ; Tahabsom, Z. - \ 2017
Wageningen : Wageningen UR, Centre for Genetic Resources (CGN report 40) - 32 p.
Crop diversification in a changing world
Kik, Chris - \ 2017
Kik C (2017). Crop diversification in a changing world. Workshop 4: Accessing plant genetic diversity – what are the obstacles and how can they be overcome? EUCARPIA symposium Mobilizing the green gold of plant genetic resources. Montpellier, Frankrijk, 8–11 mei
The Dutch national genebank CGN: a general introduction
Kik, Chris - \ 2017
Kik C (2017). The Dutch national genebank CGN: a general introduction. NCARE, Baq’a, Jordanie, 9 september
Ik zie door de bomen het bos niet meer: Structuur St. de Oerakker en verbanden met andere organisaties
Kik, Chris - \ 2017
Kik C (2017). Ik zie door de bomen het bos niet meer: Structuur St de Oerakker en verbanden met andere organisaties. Najaarsvergadering St de Oerakker, Wageningen, 29 november
Seed hunter explores Uzbekistan and Jordan
Kik, Chris - \ 2017
Blau de himel, grien it gers, afl. 1
Kik, Chris - \ 2017

Deel 1 van een drieluik korte documentaires over gras

Prevalence of dental disorders in degus and evaluation of diagnostic methods to determine dental disease and its prognosis
Bolhuis, Hester van; Hoffen, Lotte van; Zijll Langhout, Martine van; Engeldorp Gastelaars, Heleen van; Hendriks, Wouter ; Lamberts, Marnix ; Kik, Marja - \ 2017
Veterinary Record 181 (2017)23. - ISSN 0042-4900
apical elongation - calcium - malocclusion - octodon degus - phosphorus - radiography
Degus (Octodon degus) are prone to develop dental disease with deleterious health effects. The two studies reported here aimed to determine the prevalence of dental disorders in degus and to identify and evaluate diagnostic tools for determination of prognosis of these disorders. In study A, health data from 225 degus at AAP, Rescue Center for Exotic Animals in the Netherlands, were collated and the prevalence of dental disorders and differences in sex and age at clinical onset of symptoms associated with dental disorders were described. The prevalence was 34.7 per cent and higher (P<0.01) in males than in females. The occurrence of cheek teeth malocclusion was highly positively (P<0.0001) correlated to mortality. In study B, 36 skulls were examined by macroscopic evaluation, radiography and histology. Additionally, the calcium:phosphorus (Ca:P) of mandibular bone in degus with and without dental disorders were determined. There was no significant (P=0.10) difference in Ca:P between the two groups. Quantifying mandibular apical cheek teeth elongation via macroscopic evaluation was highly correlated (P<0.01) to the results obtained via radiography. Examination for apical elongation by palpation and diagnostic imaging should be included in routine health monitoring of degus. Apical elongation appeared to develop before coronal elongation and when cheek teeth malocclusion occurred, prognosis for recovery of dental disease was poor.
Dode wolf was gezond, maar had al enige tijd niet gegeten
Jansman, Hugh - \ 2017

De eerst resultaten van het onderzoek naar de dode wolf zijn bekend. Patholoog Marja Kik (DWHC, faculteit Diergeneeskunde): "Interessant om te vermelden is dat de maag en darmen, op lintwormen na, geheel leeg waren. Het dier had dus al even niet gegeten, mogelijk zo'n 48 uur.

Complete genome sequence of a Frog Virus 3-like ranavirus from an Oophaga pumilio frog imported to the Netherlands
Saucedo, Bernardo ; Hughes, J. ; Suárez, Nicolás ; Haenen, O.L.M. ; Voorbergen-Laarman, H.A. ; Gröne, Andrea ; Kik, Marja J.L. ; Beurden, S.J. van - \ 2017
Environmental surveillance during an outbreak of tularaemia in hares, the Netherlands, 2015
Janse, Ingmar ; Maas, M. ; Rijks, J.M. ; Koene, M. ; Plaats, R.Q. van der; Engelsma, M. ; Tas, P.W.L. ; Braks, M. ; Stroo, A. ; Notermans, D.W. ; Vries, M.C. de; Reubsaet, F.A.G. ; Fanoy, E. ; Swaan, C.M. ; Kik, M.J. ; Ijzer, J. ; Jaarsma, R.I. ; Wieren, S. van; Roda Husman, A.M. de; Passel, M. van; Roest, H. ; Giessen, J. van der - \ 2017
Eurosurveillance 22 (2017)35. - ISSN 1025-496X
Tularaemia, a disease caused by the bacterium Francisella tularensis, is a re-emerging zoonosis in the Netherlands. After sporadic human and hare cases occurred in the period 2011 to 2014, a cluster of F. tularensis-infected hares was recognised in a region in the north of the Netherlands from February to May 2015. No human cases were identified, including after active case finding. Presence of F. tularensis was investigated in potential reservoirs and transmission routes, including common voles, arthropod vectors and surface waters. F. tularensis was not detected in common voles, mosquito larvae or adults, tabanids or ticks. However, the bacterium was detected in water and sediment samples collected in a limited geographical area where infected hares had also been found. These results demonstrate that water monitoring could provide valuable information regarding F. tularensis spread and persistence, and should be used in addition to disease surveillance in wildlife.
Postmortaal onderzoek van bruinvissen (Phocoena phocoena) uit Nederlandse wateren, 2016
IJsseldijk, L.L. ; Kik, M.J.L. ; Solé, L. ; Gröne, A. - \ 2017
Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-technical report 96) - 41
phocoena - postmortale onderzoeken - kustgebieden - phocoenidae - nederland - postmortem examinations - coastal areas - netherlands
This annual report presents the results of post-mortem examinations of porpoises stranded on the Dutchcoast. One of the main objectives of the research is to quantify human-induced causes of death. In 2016, 55dead harbour porpoises were examined: 31 males and 24 females, including 14 adults, 33 juveniles and 8neonates. Most of the harbour porpoises examined died as a result of grey seal attacks (31%), infectiousdiseases (29%) or food shortage (18%). Bycatch was the cause of death in 11% of the harbour porpoisesexamined
Tuinieren voor groep 5
Bas, Noortje ; Kik, Chris - \ 2017

Basisschool De Wingerd in Twello werkt samen met CGN aan een groentetuin project met historische bonenrassen

CGN: the Dutch national genebank
Kik, Chris - \ 2016
Presentation during visit of delegation from Yamaguchi University (Japan), Wageningen, 3 oktober 2016
Op zoek naar zaad. Welke verrassingen hebben zadenbanken wereldwijd voor ons in petto?
Kik, Chris - \ 2016
Collecting and regenerating seed samples in a genebank context
Kik, C. - \ 2016
CGN Wageningen (Interne notitie CGN, Wageningen )
An introduction to the Dutch national genebank CGN
Kik, Chris - \ 2016
Prakticum speltbeschrijving
Kik, Chris - \ 2016
Beschrijven van van spelt
Het beschrijven van oude rassen
Kik, Chris - \ 2016
Presentatie: Het beschrijven van oude rassen bij Wurkferban Fryske Rassen, Poppenwier, 14 januari 2016
Voedselzekerheid en de rol van genenbanken
Kik, Chris - \ 2016
Presentatie: Voedselzekerheid en de rol van genenbanken tijdens Reclaim the Seeds manifestatie, Wageningen, 13 februari 2016.
Fries om utens geeft leiding aan genenbank planten in Wageningen
Kik, Chris - \ 2016

Spyksma J (2016). Fries om utens geeft leiding aan genenbank planten in Wageningen. Oer 10(4), 13-14. (interview met C. Kik)

Comparative genomics of campylobacter iguaniorum to unravel genetic regions associated with reptilian hosts
Gilbert, Maarten J. ; Miller, William G. ; Yee, Emma ; Kik, Marja ; Zomer, Aldert L. ; Wagenaar, Jaap A. ; Duim, Birgitta - \ 2016
Genome Biology and Evolution 8 (2016)9. - ISSN 1759-6653 - p. 3022 - 3029.
Campylobacter Iguaniorum - Comparative Genomics - Evolution - Phylogeny - Recombination - Reptile

Campylobacter iguaniorum is most closely related to the species C. fetus, C. hyointestinalis, andC. lanienae. Reptiles, chelonians and lizards in particular, appear to be a primary reservoir of this Campylobacter species. Here we report the genome comparison of C. iguaniorumstrain 1485E, isolated from a bearded dragon (Pogona vitticeps), and strain 2463D, isolated froma green iguana (Iguana iguana), with the genomes of closely related taxa, in particular with reptile-Associated C. fetus subsp.Testudinum. In contrast to C. fetus, C. iguaniorum is lacking an S-layer encoding region. Furthermore, a defined lipooligosaccharide biosynthesis locus, encoding multiple glycosyltransferases and bounded by waa genes, is absent from C. iguaniorum. Instead, multiple predicted glycosylation regionswere identified inC. iguaniorum.One of these regions is>50 kb withdeviantG+Ccontent, suggesting acquisition via lateral transfer. These similar, but non-homologous glycosylation regions were located at the same position on the genome in both strains. Multiple genes encoding respiratory enzymes not identified to date within the C. fetus clade were present. C. iguaniorum shared highest homology with C. hyointestinalis and C. fetus. As in reptile-Associated C. fetus subsp.Testudinum, a putative tricarballylate catabolism locus was identified. However, despite colonizing a shared host, no recent recombination between both taxa was detected. This genomic study provides a better understanding of host adaptation, virulence, phylogeny, and evolution of C. iguaniorum and related Campylobacter taxa.

Check title to add to marked list
<< previous | next >>

Show 20 50 100 records per page

Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.