BIOTIC Species Information for Nephtys hombergii
|Researched by||Lizzie Tyler||Data supplied by||University of Sheffield|
|Refereed by||This information is not refereed.|
|Growth form||Vermiform segmented
|Typical food types||Molluscs, crustaceans & other polychaetes.||Habit||Free living|
|Bioturbator||Diffusive mixing||Flexibility||High (>45 degrees)|
|Height||Not relevant||Growth Rate||Insufficient information|
|Adult dispersal potential||100-1000m||Dependency||Independent|
|General Biology Additional Information||Abundance
Clay (1967f) lists densities of Nephtys hombergii reported by various authors from locations in the British Isles, which range from 570 per m² in the Tamar Estuary to 2 per m² at a location on the Northumbrian coast.
Nephtys hombergii excavates no permanent burrow but continually changes course in the sediment in the hunt for food, so that a maze of temporary burrows is made, marked only by a mucilage lining. These tunnels are located 5 to 15 cm beneath the surface (Linke, 1939; Holme, 1949). The sampling technique of Vader (1964) showed that the worm can move very quickly through the substratum, downwards on the ebb tide and up again on the flood tide (Clay, 1967f). Nephtys hombergii is also capable of swimming short distances with an undulatory movement.
Adults of the species are carnivorous and captures prey with its eversible, papillated proboscis.
|Biology References||Holme, 1949, Linke, 1939, Vader, 1964, Clay, 1967(f), Arndt & Schiedek, 1997, Beukema, 1987, Hayward & Ryland, 1990, Julie Bremner, unpub data,|