Facelina bostoniensis
Drummonds Fadenschnecke ( Facelina bostoniensis )
Drummonds Fadenschnecke ( Facelina bostoniensis ) is a living marine species of the family of the thread worm ( Aeolidiidae ) from the subordination of nudibranchs.
Description
Drummonds Fadenschnecke has an end tapered, elongated body with numerous, located on both sides of the body, standing in clumps gill appendages. At the top are each a pair of head tentacles, long tentacles and mouth Fußtentakel. The body of the snail is light pink - brown ( partially transparent), the branchial appendages are quite dark - brownish red to dark brown - with lighter or white tips.
The screw reaches a length of up to 4.5 cm, but is often significantly smaller.
Dissemination
Drummonds Fadenschnecke occurs in the Mediterranean and the Atlantic - there extends the distribution area of the North American east coast to the North Sea - and from there into the Western Baltic ( approximately up to the Belt Sea ).
Way of life
Drummonds Fadenschnecke occurs from 3 meters depth on hard ground, where they graze polyps and brown algae or (from) mussels and other sea slugs eat. The stinging cells of grazed polyps are not digested, but stored in the back Annexes of the body where they are used for defense ( Kleptocniden ).
The spawn of Drummonds Fadenschnecke forms white, irregular, the background firmly adherent cords.
Others
The scientific species name bostoniensis was awarded to the city of Boston. The English wording Drummond 's face lina ( = Drummonds Fadenschnecke ) goes back to the Irish naturalist and professor of anatomy James Lawson Drummond ( 1783-1853 ), who noted that Facelina bostoniensis often found on the Welsh coast.