Spatial changes in fatty acids signatures of the great scallop Pecten maximus across the Bay of Biscay continental shelf

2015 ◽  
Vol 109 ◽  
pp. 1-9 ◽  
Author(s):  
Caroline Nerot ◽  
Tarik Meziane ◽  
Gauthier Schaal ◽  
Jacques Grall ◽  
Anne Lorrain ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Continental Shelf ◽  
Bay Of Biscay ◽  
Pecten Maximus ◽  
Great Scallop ◽  
Spatial Changes

Proteomic-based comparison between populations of the Great Scallop, Pecten maximus

2014 ◽  
Vol 105 ◽  
pp. 164-173 ◽  
Author(s):  
Sébastien Artigaud ◽  
Romain Lavaud ◽  
Julien Thébault ◽  
Fred Jean ◽  
Øivind Strand ◽  
...  
Keyword(s):  
Pecten Maximus ◽  
Great Scallop

scholarly journals High frequency Barium profiles in shells of the Great Scallop <i>Pecten maximus</i>: a methodical long-term and multi-site survey in Western Europe

2008 ◽  
Vol 5 (5) ◽  
pp. 3665-3698 ◽  
Author(s):  
A. Barats ◽  
D. Amouroux ◽  
L. Chauvaud ◽  
C. Pécheyran ◽  
A. Lorrain ◽  
...  
Keyword(s):  
High Frequency ◽  
Western Europe ◽  
Pecten Maximus ◽  
Coastal Environments ◽  
Great Scallop ◽  
Site Survey ◽  
Scallop Shells ◽  
Bay Of Brest ◽  
Long Term Survey

Abstract. Skeletal barium/calcium ([Ba]/[Ca])shell ratios were measured every third daily striae in 39 flat valves of the Great Scallop Pecten maximus (2-year old; 3 shells/year) collected in temperate coastal environments of Western Europe. Variations of ([Ba]/[Ca])shell ratio were first demonstrated reproducible for several scallop individuals from the same population, over a 7-year period (1998–2004), and from different coastal environments in France (42–49° N). As in previous studies, ([Ba]/[Ca])shell profiles exhibited a background ratio punctuated by transient maxima occurring in summer. Background partition coefficient (DBa=0.11±0.03, in 2000) was similar to that previously reported in P. maximus shells (DBa=0.18), suggesting a direct shell uptake of dissolved seawater Ba (Gillikin et al., 2008). Special attention was then dedicated to the complete monitoring of high resolution ([Ba]/[Ca])shell profiles in bivalve shells (7 years, Bay of Brest) to better constrain environmental processes influencing both the occurrence and the amplitude of summer peaks. In 2000, seawater Ba analyses underlined significant particulate Ba inputs at the seawater interface (SWI) during ([Ba]/[Ca])shell peak events. These Ba inputs are suggested to be subsequent to and rather induced by a pelagic biogenic process. The long term survey revealed first that archived Ba within the shell cannot be used as a direct paleo productivity tracer, and second that complex pelagic/benthic processes in the Ba cycle are responsible of particulate Ba inputs to the SWI, subsequently taken up by the bivalve and recorded as higher ([Ba]/[Ca])shell ratios. When these processes will be better constrained, high frequency observations of Ba in scallop shells would provide new insights into filter feeding dynamics and into Ba biogeochemistry in coastal environments.

Distribution and abundance of debris on the continental shelf of the Bay of Biscay and in Seine Bay

1995 ◽  
Vol 30 (1) ◽  
pp. 58-62 ◽  
Author(s):  
F. Galgani ◽  
T. Burgeot ◽  
G. Bocquéné ◽  
F. Vincent ◽  
J.P. Leauté ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Bay Of Biscay

scholarly journals How much fish is hidden in the surface and bottom acoustic blind zones?

2009 ◽  
Vol 66 (6) ◽  
pp. 1355-1363 ◽  
Author(s):  
Carla Scalabrin ◽  
Christian Marfia ◽  
Jean Boucher
Keyword(s):  
Continental Shelf ◽  
Autonomous Underwater Vehicle ◽  
Distribution Patterns ◽  
Underwater Vehicle ◽  
Fish Distribution ◽  
Scattering Coefficient ◽  
Research Vessel ◽  
Bay Of Biscay ◽  
Acoustic Surveys ◽  
Scientific Payload

Abstract Scalabrin, C., Marfia, C., and Boucher, J. 2009. How much fish is hidden in the surface and bottom acoustic blind zones? – ICES Journal of Marine Science, 66: 1355–1363. This paper presents results from the ALLEGRO-07 survey that was carried out from 1 to 15 September 2007 across the continental shelf in the Bay of Biscay by the RV “Thalassa”. The main objectives were to conduct experiments with a medium-sized, autonomous underwater vehicle (AUV) equipped with a fishery-acoustic scientific payload. This was needed to overcome the difficulties of sampling the surface and bottom blind zones, which are inaccessible to conventional, vessel-mounted transducers used for acoustic surveys in the Bay of Biscay. The AUV acoustic datasets from four dives were compared with those from the research vessel. The results were expressed for the nautical-area-scattering coefficient (sA) and biomass estimates. The AUV provided higher sA measurements than did the vessel. For particular environmental and fish-distribution patterns, the biomass estimated by the AUV was more than ten times that estimated by the vessel alone. The results presented indicate the magnitude of the error that may occur in acoustic surveys, if the biomass in the two blind zones is undetected.

Yields of great scallop, Pecten maximus, larvae in a commercial flow-through rearing system in Norway

2006 ◽  
Vol 14 (4) ◽  
pp. 377-394 ◽  
Author(s):  
Thorolf Magnesen ◽  
Øivind Bergh ◽  
Gyda Christophersen
Keyword(s):  
Pecten Maximus ◽  
Great Scallop ◽  
Flow Through
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