Fersiynau electronig


Dangosydd eitem ddigidol (DOI)

Non-native populations of Pacific oysters Crassostrea gigas (Thunberg 1793) are established around the United Kingdom (UK),
with two genetically different stocks originating from separate introductions to the UK and France. In this study, we use a coupled
biophysical model to simulate Pacific oyster larval transport, in order to investigate the dispersal of the species from a known
population near their northern limit on the west coast of the UK (in the Milford Haven Estuary). The model included a pelagic phase,
simulating different swimming behaviours, and a settlement phase based on a hydrospatial substrate map. Following successful
settlement elsewhere, subsequent releases simulated potential population spread over successive generations. Our results suggest
that, should there be sufficiently warm sea temperatures to allow reproduction, dispersal away from Milford Haven Estuary would
most be southeast ward towards the Bristol Channel; but dispersal north and west to Ireland is also possible, depending heavily on
pelagic swimming behaviour. Seasonal modifications to circulation were less influential. Our study increases understanding of
factors that contribute to oyster population spread, and suggests methods for improved management through numerical predictions.


Iaith wreiddiolSaesneg
Tudalennau (o-i)117-131
CyfnodolynAquatic Invasions
Rhif y cyfnodolyn2
Dyddiad ar-lein cynnar15 Chwef 2017
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 2017

Cyfanswm lawlrlwytho

Nid oes data ar gael
Gweld graff cysylltiadau