Year to year changes in the share of cockles (Cerastoderma edule) and blue mussels (Mytilus edulis) in the food of eiders (Somateria mollissima) on six East Fristian Islands

1999 ◽  
Vol 29 (S1) ◽  
pp. 71-73 ◽  
Author(s):  
Gudrun Hilgerloh
Keyword(s):  
Mytilus Edulis ◽  
Somateria Mollissima ◽  
Cerastoderma Edule ◽  
Blue Mussels

A large molluscivore bird (Common Eider, Somateria mollissima) is able to discriminate quality of blue mussels (Mytilus edulis) based on size and provenance

2015 ◽  
Vol 93 (8) ◽  
pp. 655-663 ◽  
Author(s):  
Elisabeth Varennes ◽  
Sveinn A. Hanssen ◽  
John C. Bonardelli ◽  
Magella Guillemette
Keyword(s):  
Energy Balance ◽  
Mytilus Edulis ◽  
Energy Intake ◽  
Prey Size ◽  
Prey Selection ◽  
Somateria Mollissima ◽  
Shell Material ◽  
Blue Mussels ◽  
Common Eiders

Molluscivore birds that forage on abundant but low-quality food have to ingest large quantities of food to achieve energy balance. Such a strategy is often associated with important digestive constraints limiting predator’s ingestion. Thus, these predators may use prey selection to ingest better-quality individuals among a generally low-quality prey population. Using captive Common Eiders (Somateria mollissima (L., 1758)) diving in a constant environment, we were able to examine their preferences for blue mussels (Mytilus edulis L., 1758) of varying qualities (different sizes or provenances). In addition, we studied the consequences prey selection had on Eiders’ energy intake rates and ingestion of flesh and shell material. Eiders selected 10–20 mm mussels and were able to discriminate and to select cultivated mussels from intertidal mussels. Prey selection allowed, in certain conditions of prey-size abundance, higher flesh and energy intake rates without increasing the ingestion of shell material. This study confirmed the energetic advantage that Eiders have when foraging in aquaculture sites, which explain the large depredation of preferred mussel sizes.

Size-Selective Predation of Blue Mussels (Mytilus edulis) by Common Eiders (Somateria mollissima) under Controlled Field Conditions

The Auk ◽  
1999 ◽  
Vol 116 (2) ◽  
pp. 403-416 ◽  
Author(s):  
Diana J. Hamilton ◽  
Thomas D. Nudds
Keyword(s):  
Mytilus Edulis ◽  
Field Conditions ◽  
Somateria Mollissima ◽  
Selective Predation ◽  
Blue Mussels ◽  
Common Eiders

Macrophyte-derived detritus in shallow coastal waters contributes to suspended particulate organic matter and increases growth rates of Mytilus edulis

2020 ◽  
Vol 644 ◽  
pp. 91-103
Author(s):  
D Bearham ◽  
MA Vanderklift ◽  
RA Downie ◽  
DP Thomson ◽  
LA Clementson
Keyword(s):  
Organic Matter ◽  
Mytilus Edulis ◽  
Particulate Organic Matter ◽  
Coastal Waters ◽  
Gill Tissue ◽  
Suspension Feeder ◽  
Food Sources ◽  
Suspension Feeders ◽  
Blue Mussels ◽  
Suspended Particulate

Benthic suspension feeders, such as bivalves, potentially have several different food sources, including plankton and resuspended detritus of benthic origin. We hypothesised that suspension feeders are likely to feed on detritus if it is present. This inference would be further strengthened if there was a correlation between δ13C of suspension feeder tissue and δ13C of particulate organic matter (POM). Since detritus is characterised by high particulate organic matter (POC):chl a ratios, we would also predict a positive correlation between POM δ13C and POC:chl a. We hypothesised that increasing depth and greater distance from shore would produce a greater nutritional reliance by experimentally transplanted blue mussels Mytilus edulis on plankton rather than macrophyte-derived detritus. After deployments of 3 mo duration in 2 different years at depths from 3 to 40 m, M. edulis sizes were positively correlated with POM concentrations. POC:chl a ratios and δ13C of POM and M. edulis gill tissue decreased with increasing depth (and greater distance from shore). δ13C of POM was correlated with δ13C of M. edulis. Our results suggest that detritus comprised a large proportion of POM at shallow depths (<15 m), that M. edulis ingested and assimilated carbon in proportion to its availability in POM, and that growth of M. edulis was higher where detritus was present and POM concentrations were higher.

Induction of micronuclei and other nuclear abnormalities in blue mussels Mytilus edulis after 1-, 2-, 4- and 8-day treatment with crude oil from the North Sea

Ekologija ◽  
2010 ◽  
Vol 56 (3) ◽  
pp. 124-131 ◽  
Author(s):  
Janina Baršienė ◽  
Laura Andreikėnaitė ◽  
Anne Bjornstad
Keyword(s):  
Crude Oil ◽  
Mytilus Edulis ◽  
North Sea ◽  
Day Treatment ◽  
Nuclear Abnormalities ◽  
Blue Mussels ◽  
The North ◽  
The North Sea

Blue mussels Mytilus edulis in the Baltic: good news for foraging eiders Sornateria mollissima

1998 ◽  
Vol 4 (1) ◽  
pp. 81-89 ◽  
Author(s):  
Markus Öst ◽  
Mikael Kilpi
Keyword(s):  
Mytilus Edulis ◽  
Good News ◽  
Blue Mussels ◽  
The Baltic

scholarly journals Changes of Heart Rate and Lipid Composition in Mytilus Edulis and Modiolus Modiolus Caused by Crude Oil Pollution and Low Salinity Effects

2021 ◽  
Vol 11 (2) ◽  
pp. 46-60
Author(s):  
Igor Bakhmet ◽  
Natalia Fokina ◽  
Tatiana Ruokolainen
Keyword(s):  
Heart Rate ◽  
Crude Oil ◽  
Mytilus Edulis ◽  
Lipid Composition ◽  
Oil Pollution ◽  
Cardiac Activity ◽  
Blue Mussels ◽  
Low Salinity ◽  
Crude Oil Pollution ◽  
Modiolus Modiolus

Blue mussels, Mytilus edulis, inhabiting tidal zones, are naturally exposed to fluctuating environmental conditions (e.g., fluctuations in temperature and salinities), while horse mussels, Modiolus modiolus, live under relatively invariable shelf water conditions. The present investigation tested the hypothesis: blue mussels, in comparison to horse mussels, have an increased ability to tolerate the stress of pollution combined with low salinity. To assess the response of blue mussels and horse mussels to oil pollution at seawater salinities of 25 psu (normal) and 15 psu (low), we used a combination of heart rate and lipid composition as physiological and biochemical indicators, respectively. A sharp decrease in heart rate as well as important fluctuations in cardiac activity was observed under all oil concentrations. Modifications in the concentrations of the main membrane lipid classes (phosphatidylcholine, phosphatidylethanolamine, and cholesterol) and storage lipids (primarily triacylglycerols) in response to different crude oil concentrations were time- and dose-dependent. Both chosen indicators showed a high sensitivity to crude oil contamination. Furthermore, both bivalve species showed similar responses to oil pollution, suggesting a universal mechanism for biochemical adaptation to crude oil pollution.

Pre-exposure to Cu2+ and CuO NPs leads to infection of caged blue mussels, Mytilus edulis L., by pathogenic microalga: Pilot study in the Lower St. Lawrence Estuary (Québec, Canada)

2021 ◽  
Vol 166 ◽  
pp. 112180
Author(s):  
Michael Zuykov ◽  
Galina Kolyuchkina ◽  
Graeme Spiers ◽  
Michel Gosselin ◽  
Philippe Archambault ◽  
...  
Keyword(s):  
Pilot Study ◽  
Mytilus Edulis ◽  
Lawrence Estuary ◽  
Blue Mussels ◽  
Cuo Nps ◽  
St Lawrence Estuary

Dredging of blue mussels (Mytilus edulis L.) in a Danish sound: stock sizes and fishery-effects on mussel population dynamic

1999 ◽  
Vol 40 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Per Dolmer ◽  
Per Sand Kristensen ◽  
Erik Hoffmann
Keyword(s):  
Mytilus Edulis ◽  
Population Dynamic ◽  
Mussel Population ◽  
Blue Mussels
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