Krohn, 1853

Description
Body small and thin, firm and opaque. Head small. Hooks serrated. Two pairs of lateral fins, separated and rounded, with a small zone without rays. The anterior fins begin at the rear end of the ventral ganglion. Collarette very thin. No alimentary diverticula. Eyes small, with T-shaped pigment spot.
Ovaries reaching to the anterior end of the anterior fins, with large ova. Seminal vesicles located between the lateral fins, well marked, with a trunk and a large knob with two papillae. When fully mature, the vesicles touch almost the fins.
Hooks 5-9. Teeth in two rows, anterior 6-10 and posterior 12-20.

Size
Maximum body length 13 mm, relative tail length 22-30%.

Depth range
Epipelagic.

Distribution in the North Sea
S. serratodentata occasionally occurs in the S and N North Sea, entered from the respective adjacent NE Atlantic waters.

World distribution
Epipelagic in temperate and warm Atlantic waters (occasionally in other oceans also).

[After Pierrot-Bults and Chidgey, 1988]

Kingdom Animalia
Phylum Chaetognatha
Family Sagittidae
Genus Sagitta
Species Sagitta serratodentata

Status in World Register of Marine Species

Synonym of Serratosagitta serratodentata (Krohn, 1853)

Scientific synonyms and common names

Sagitta serratodentata atlantica | Tokioka, 1959

Pierrot-Bults, A.C. and K.C. Chidgey, 1988. Chaetognatha. Synopses of the British Fauna (New Series), No. 39. Brill/Backhuys, London.

For further info about Sagitta serratodentata, you can also look up this species under:

You can continue searching for Sagitta serratodentata on one of these Web sites:

Fauna Europaea (animals) | IOPI (plants) | NCBI (genetic)

Google | Yahoo | MSN | Wikipedia