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Genetic conspecificity of the worldwide populations of Didemnum vexillum Kott, 2002.
Molecular data on both mitochondrial and nuclear genes from colonies sampled from Europe, east and west coasts of North America, Japan, and New Zealand strongly indicate that Didemnum sp.
Native and non-native species of hard substrata in the Dutch Wadden Sea
Bij een inventarisatie van hard substraat in 83 locaties in de Nederlandse Waddenzee, in zoutgehaltes van 10-32 ppt, werden in juli/augustus 2009 in totaal 129 soorten planten en dieren waargenomen.…
Recent population expansions of non-native ascidians in The Netherlands
- A. Gittenberger
- Environmental Science
- 26 March 2007
Determining the native region of the putatively invasive ascidian Didemnum vexillum Kott, 2002
A hitherto unnoticed adaptive radiation: epitoniid species (Gastropoda: Epitoniidae) associated with corals (Scleractinia)
Twenty-two epitoniid species that live associated with various hard coral species are described and their identities as separate gene pools are convincingly demonstrated by molecular data, some of these species cannot be identified unequivocally on the basis of conchological characters alone.
Cryptic, adaptive radiation of endoparasitic snails: sibling species of Leptoconchus (Gastropoda: Coralliophilidae) in corals
The complexity of coral reefs is still underrated, as is shown here by the application of DNA taxonomy as an indispensable approach to unravel cryptic radiations, which must be known in order to understand the functioning of the ecosystem.
Invasive tunicates on Zeeland and Prince Edward Island mussels, and management practices in The Netherlands
In the Dutch province of Zeeland, fouling species on a mussel line form a diverse assemblage of mainly exotic evertebrate species. This differs strikingly from the situation in the estuaries of…
The invasive quagga mussel Dreissena rostriformis bugensis (Andrusov, 1879) (Bivalvia: Dreissenidae) in the Dutch Haringvliet, an enclosed freshwater Rhine-Meuse estuary, the westernmost record for…
The westernmost record in Europe of the invasive quagga mussel Dreissena rostriformis bugensis is discussed, i.e. in the Haringvliet, an enclosed freshwater Rhine-Meuse estuary in The Netherlands, and its maximum shell growth rates are similar to somewhat higher than those recorded in literature.
Variation in the composition of corals, fishes, sponges, echinoderms, ascidians, molluscs, foraminifera and macroalgae across a pronounced in-to-offshore environmental gradient in the Jakarta…
Ostreid herpesvirus OsHV-1 μVar in Pacific oysters Crassostrea gigas (Thunberg 1793) of the Wadden Sea, a UNESCO world heritage site.
- A. Gittenberger, M. Voorbergen-Laarman, M. Engelsma
- Environmental ScienceJournal of fish diseases
It was concluded that OsHV-1 μVar has settled itself in Pacific oyster reefs in the Wadden Sea, and the recent discoveries of OsHv-1 microvariants in Australia and Korea indicate that the virus might be more widespread than can be deduced from current literature.