scholarly journals Documentation of sites of intertidal blue mussel (Mytilus edulis L.) beds of the Lower Saxonian Wadden Sea, southern North Sea (as of 2003) and the role of their structure for spatfall settlement

2008 ◽  
Vol 62 (2) ◽  
pp. 177-188 ◽  
Author(s):  
Marc Herlyn ◽  
Gerald Millat ◽  
Birgit Petersen
Keyword(s):  
Mytilus Edulis ◽  
North Sea ◽  
Wadden Sea ◽  
Blue Mussel ◽  
Southern North Sea

Histochemistry of the Bucco-Oesophageal Glands of Mytilus Edulis: The Importance of Mucus in Ingestion

1993 ◽  
Vol 73 (1) ◽  
pp. 237-240 ◽  
Author(s):  
Peter G. Beninger ◽  
Marcel Le Pennec
Keyword(s):  
Mytilus Edulis ◽  
Digestive Enzymes ◽  
Blue Mussel ◽  
Suspension Feeding ◽  
Digestive Function ◽  
Acid Mucopolysaccharides ◽  
Secretory Gland ◽  
Particle Ingestion

Histochemical techniques were used to investigate the possible role of the buccooesophageal glands in the blue mussel, Mytilus edulis L. (Mollusca: Bivalvia). No activity was observed for any of the eight major digestive enzymes tested; however, the glands contained large amounts of both neutral and acid mucopolysaccharides. These results confirm the importance of mucus in the ingestive process in M. edulis, and do not support the hypothesis of ingestion of particles suspended in water alone.Until recently it was thought that the Bivalvia were the only class of molluscs in which some type of secretory gland of extracellular digestive function in the bucco-oesophageal region was totally absent (Table 1). However, in a study of the mode of particle ingestion in five species of suspension-feeding bivalves, an extensive glandular complex was reported in the bucco-oesophageal region of Mytilus edulis L. only (Beninger et al., 1991). Although these glands were observed to liberate secretions into the oesophageal lumen, it was not known whether they performed any digestive function.

Long-term changes in species composition of demersal fish and epibenthic species in the Jade area (German Wadden Sea/Southern North Sea) since 1972

2016 ◽  
Vol 181 ◽  
pp. 284-293 ◽  
Author(s):  
Julia Meyer ◽  
Ingrid Kröncke ◽  
Alexander Bartholomä ◽  
Joachim W. Dippner ◽  
Ulrike Schückel
Keyword(s):  
Species Composition ◽  
North Sea ◽  
Wadden Sea ◽  
Demersal Fish ◽  
Southern North Sea ◽  
Long Term Changes
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