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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    Records 1 - 9 / 9

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    Ancient globetrotters—connectivity and putative native ranges of two cosmopolitan biofouling amphipods
    Beermann, Jan ; Hall-mullen, Allison K. ; Havermans, Charlotte ; Coolen, Joop W.P. ; Crooijmans, Richard P.M.A. ; Dibbits, Bert ; Held, Christoph ; Desiderato, Andrea - \ 2020
    PeerJ 8 (2020). - ISSN 2167-8359 - p. e9613 - e9613.
    amphipoda - biofouling - biological invasion - cosmopolitan distribution - marine dispersal - marine shipping
    The geographic distributions of some coastal marine species have appeared as
    cosmopolitan ever since they were first scientifically documented. In particular, for many benthic species that are associated with anthropogenic substrata, there is much mechanisms of dispersal. Here, we focused on two congeneric coastal crustaceans nearly all kinds of artificial hard substrata in temperate to warm seas. We hypothesized that shipping activities that started centuries ago. Mitochondrial DNA sequences of the CO1 fragment of specimens from distinct marine regions around the world were on putative native ranges of the two Jassa species. Populations of both species exhibited considerable genetic diversity with differing levels of geographic structure. For both species, at least two dominant haplotypes were shared among several geographic populations. Rapid demographic expansion and high migration rates between geographically distant regions support a scenario of ongoing dispersal all J. marmorata is the Northwest Atlantic, whereas the likely former native range of J. slatteryi is the Northern Pacific region. As corroborated by the genetic connectivity between populations, shipping still appears to be the more successful vector of the two species’ dispersal when compared to natural mechanisms. Historical invasion events that likely started centuries ago, along with current ongoing dispersal, confirm
    these species’ identities as true “neocosmopolitans”.
    Nearly 20 000 e-liquids and 250 unique flavour descriptions: An overview of the Dutch market based on information from manufacturers
    Havermans, Anne ; Krüsemann, Erna J.Z. ; Pennings, Jeroen ; Graaf, Kees De; Boesveldt, Sanne ; Talhout, Reinskje - \ 2019
    Tobacco Control (2019). - ISSN 0964-4563
    consumer appeal - e-cigarettes - e-liquid manufacturing - e-liquids - flavor descriptions - marketing - tobacco product directive

    Objectives: Flavours increase attractiveness of electronic cigarettes and stimulate use among vulnerable groups such as non-smoking adolescents. It is important for regulators to monitor the market to gain insight in, and regulate the range of e-liquid flavours that is available to consumers. E-liquid manufacturers are required to report key product information to authorities in the European Member States in which they plan to market their products. This information was used to provide an overview of e-liquid flavour descriptions marketed in the Netherlands in 2017. Methods: Two researchers classified 19 266 e-liquids into the 16 main categories of the e-liquid flavour wheel, based on information from four variables in the European Common Entry Gate system. Flavour descriptions were further specified in subcategories. Results: For 16 300 e-liquids (85%), sufficient information was available for classification. The categories containing the highest number of e-liquids were fruit (34%), tobacco (16%) and dessert (10%). For all e-liquids, excluding unflavoured ones, 245 subcategories were defined within the main categories. In addition to previously reported subcategories, various miscellaneous flavours such as sandwich, buttermilk and lavender were identified. Conclusions: In 2017, ∼20 000 e-liquids were reported to be marketed in the Netherlands, in 245 unique flavour descriptions. The variety of marketed flavour descriptions reflects flavour preference of e-cigarette users as described in literature. Our systematic classification of e-liquids by flavour description provides a tool for organising the huge variety in market supply, serves as an example for other countries to generate similar overviews and can support regulators in developing flavour regulations.

    'Vrijloopstallen in de vorst' februari 2012
    Animal Sciences Group (ASG), - \ 2012
    [S.l.] : Verantwoorde veehouderij
    loopstallen - rundveehouderij - stalinrichting - compost - dierenwelzijn - vloerbedekking - vorst - dierlijke productie - huisvesting, dieren - melkvee - loose housing - cattle husbandry - animal housing design - composts - animal welfare - floor coverings - frost - animal production - animal housing - dairy cattle
    Gesproken werd met enkele veehouders in februari 2012, toen het al anderhalve week onafgebroken (streng) had gevroren. Meindert Wiersma werkt met een composteringsbodem (warmteontwikkeling) met houtsnippers en zowel Marc Havermans als Jeroen Groenewegen werken met compost. In dit document staan hun ervaringen en hun verschil in aanpak.
    Antennesysteem drinkgedrag signaleert afwijkingen in eet- en drinkgedrag
    Havermans, M. ; Ramaekers, P. - \ 1996
    Praktijkonderzoek varkenshouderij 10 (1996)2. - ISSN 1382-0346 - p. 20 - 20.
    voedingsgedrag - foerageren - identificatie - merken - varkens - voedersystemen - instinct - feeding behaviour - foraging - identification - marking - pigs - feeding systems - instinct
    Op het Proefstation voor de Varkenshouderij is onderzocht of transponders, naast het gebruik voor I&R, een toegevoegde waarde kunnen hebben voor ondersteuning van het management
    Kunststof vloerafwerking
    Maanen, N.B. van; Havermans, M.U.C. - \ 1989
    Praktijkonderzoek varkenshouderij 3 (1989)2. - ISSN 1382-0346 - p. 3 - 4.
    vloeren - roostervloeren - varkensstallen - stallen - floors - grid floors - pig housing - stalls
    Kunststof vloeren moeten met zorg worden aangebracht. Welke soort vloer wordt gelegd, is onder andere afhankelijk van het dagelijks gebruik en van de kwaliteit van de ondervloer.
    Meer of minder dichte vloer
    Havermans, M.U.C. - \ 1989
    Praktijkonderzoek varkenshouderij 3 (1989)1. - ISSN 1382-0346 - p. 3 - 3.
    vloeren - roostervloeren - varkensstallen - stallen - floors - grid floors - pig housing - stalls
    Op het Varkensproefbedrijf te Raalte levert een vergelijking tussen 1,0 m, 1,3 m of 1,4 m dichte vloer in het kraamopfokhok nauwelijks verschil in resultaten op.
    Vleeskwaliteit, hoe meet je dat?
    Havermans, M.U.C. - \ 1988
    Praktijkonderzoek varkenshouderij 2 (1988)6. - ISSN 1382-0346 - p. 19 - 20.
    dierlijke producten - varkensvlees - varkens - kwaliteit - animal products - pigmeat - pigs - quality
    Een lapje vlees kan van goede en minder goede kwaliteit zijn. Dit artikel is bedoeld om U als lezer enige bekenheid te geven met veel gebruikte begrippen over vleeskwaliteit.
    Loslopende zeug in kraamhok geeft nog problemen
    Plagge, G.J. ; Havermans, M.U.C. - \ 1988
    Praktijkonderzoek varkenshouderij 2 (1988)5. - ISSN 1382-0346 - p. 4 - 5.
    kettingen - kraamstallen - varkens - zeugen - vastleggen - chains - farrowing houses - pigs - sows - tethering
    Op het Varkensproefbedrijf te Raalte loopt sinds 1987 een vergelijkend onderzoek naar kraamopfokhokken. Uit de voorlopige cijfers blijkt, dat de systemen met de zeug in de box als beste uit de bus komen.
    Watervoorziening bij zeugen
    Havermans, M.U.C. - \ 1988
    Praktijkonderzoek varkenshouderij 2 (1988)1. - ISSN 1382-0346 - p. 14 - 16.
    drinkbakken, schaalvormig - drinkbakken - drinken - drinkwater - pompen - zeugen - bowl drinkers - drinkers - drinking - drinking water - pumps - sows
    Op het Varkensproefbedrijf in Sterksel is onderzoekgaande waarin de wateropname van zogende zeugen centraal staat.
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