Differential responses in anti-predation traits of the native oyster Ostrea edulis and invasive Magallana gigas to ocean acidification and warming

2021 ◽  
Author(s):  
AJ Lemasson ◽  
AM Knights
Keyword(s):  
Ocean Acidification ◽  
Ostrea Edulis ◽  
Differential Responses ◽  
Native Oyster

Using particle dispersal models to assist in the conservation and recovery of the overexploited native oyster (Ostrea edulis) in an enclosed sea lough

2016 ◽  
Vol 108 ◽  
pp. 50-59 ◽  
Author(s):  
David Smyth ◽  
Louise Kregting ◽  
Björn Elsäßer ◽  
Richard Kennedy ◽  
Dai Roberts
Keyword(s):  
Ostrea Edulis ◽  
Native Oyster ◽  
Particle Dispersal

Commercial oyster stocks as a potential source of larvae in the regeneration of Ostrea edulis in Strangford Lough, Northern Ireland

2006 ◽  
Vol 86 (1) ◽  
pp. 153-159 ◽  
Author(s):  
R.J. Kennedy ◽  
D. Roberts
Keyword(s):  
Northern Ireland ◽  
Main Body ◽  
Ostrea Edulis ◽  
Larval Release ◽  
Strangford Lough ◽  
Potential Source ◽  
In The Wild ◽  
Significant Spatial Variation ◽  
Tidal Movement ◽  
Native Oyster

Ostrea edulis was extremely rare in the wild in Strangford Lough from the early 1900s until renewed spatfall was observed at a number of sites in the 1990s. A monitoring programme was undertaken to investigate the presence and distribution of planktonic oyster larvae at nine sites around the lough between June and September in 1997 and 1998 as a precursor to studies of spatfall patterns. Larval densities at sites in the northern basin of the lough were significantly higher than those in the southern basin where larvae were lacking or in low numbers. Densities and sizes of oyster larvae showed significant temporal variation suggesting pulsed larval release. Larval densities also showed significant spatial variation with higher densities at sites closer to commercial stocks pointing to these as the main source of oyster larvae. This hypothesis was supported during a larval flux study over a complete tidal cycle which indicated a 90% net tidal movement of O. edulis larvae from the entrance of the bay where commercial stocks were held to the main body of the lough. Thus the maintenance of dense commercial stocks of flat oysters may provide the key to the redevelopment of native oyster beds in Strangford Lough and elsewhere by providing an initial broodstock nucleus from which larvae can be exported.

Co-occurrence of nativeOstrea edulisand non-nativeCrassostrea gigasrevealed by monitoring of intertidal oyster populations

2017 ◽  
Vol 98 (8) ◽  
pp. 2029-2038 ◽  
Author(s):  
Nadescha Zwerschke ◽  
Judith Kochmann ◽  
Elizabeth C. Ashton ◽  
Tasman P. Crowe ◽  
Dai Roberts ◽  
...  
Keyword(s):  
Native Species ◽  
Continuous Monitoring ◽  
Wadden Sea ◽  
Population Expansion ◽  
First Record ◽  
Ostrea Edulis ◽  
Population Status ◽  
Wild Populations ◽  
Potential Impact ◽  
Native Oyster

Coastal ecosystems are particularly vulnerable to alien invasions. Regular, standardized, targeted monitoring of coastal areas helps to detect the arrival of non-native species early, identify sites most vulnerable to invasion, and assess potential for further spread. This study quantified the spread and changes in distribution of non-native oyster,Crassostrea gigas, populations around the coast of Ireland. In total 37 sites were surveyed, in areas which either currently or previously harboured cultivatedC. gigas, for the presence and abundance of ‘wild’C. gigas. Wild populations were identified at 20 sites and at four additional sitesC. gigaswas observed as recently discarded from aquaculture activity. Five of the invaded sites were identified as being highly suitable for a population expansion based on their current population status. Importantly, we also identified individuals ofC. gigasand native European oysters,Ostrea edulis, co-occurring within the same shore at five sites. This is the first record to our knowledge of such co-occurrence within Europe. This evidence of co-existing oyster species raises concerns regarding the potential impact ofC. gigason recoveringO. edulispopulations. In Ireland, however,C. gigasdoes not typically spread extensively from introduction points, and although self-containing populations exist, they are currently sustained at a much lower density than those observed in other regions such as the Wadden Sea or French Atlantic coasts. We suggest, therefore, that to protect native oyster populations,C. gigasshould be eradicated where co-occurring withO. edulisand recommend continuous monitoring of invaded sites.

Genetics of Scottish populations of the native oyster,Ostrea edulis: gene flow, human intervention and conservation

2006 ◽  
Vol 19 (4) ◽  
pp. 389-402 ◽  
Author(s):  
Andy Beaumont ◽  
Manuela Truebano Garcia ◽  
Stephan Hönig ◽  
Paula Low
Keyword(s):  
Gene Flow ◽  
Human Intervention ◽  
Ostrea Edulis ◽  
Native Oyster

scholarly journals Missing native oyster (Ostrea edulis L.) beds in a European Marine Protected Area: Should there be widespread restorative management?

2018 ◽  
Vol 221 ◽  
pp. 293-311 ◽  
Author(s):  
Jose M. Fariñas-Franco ◽  
Bryony Pearce ◽  
James M. Mair ◽  
Dan B. Harries ◽  
Rebecca C. MacPherson ◽  
...  
Keyword(s):  
Protected Area ◽  
Marine Protected Area ◽  
Ostrea Edulis ◽  
Native Oyster
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