Flaccisagitta hexaptera (d’Orbigny, 1836)

Güreşen, Sedat Ozan, Received, Onur Gönülal, Online, Published & Version, Final, 2018, New records of pelagic fauna from the Turkish waters, Turkish Journal of Zoology 42, pp. 337-339 : 338-339

Flaccisagitta hexaptera (d’Orbigny, 1836) ( Figure 4 )

Material examined: Eight specimens; 38–42 mm TL; Stations 2 (40.276°N, 25.606°E), 4 (40.312°N, 25.804°E), and 5 (40.366°N, 26.108°E).

Description: F.hexaptera was identified by the following diagnostic characters according to Kassatkina (2007) and Michael (1908): its body is flaccid and transparent ( Figure 4a ). It has two pairs of lateral fins on its trunk. All fins are saclike gelatinous structures at their bases. Anterior fins are well posterior of the ventral ganglion. They are very small, round, and partially rayed. The posterior fin is

GÜREŞEN and GÖNÜLAL / Turk J Zool angular and longer than the anterior fin. There are thick rays in the fins. Teeth are in two rows. While number of front row teeth is 2, posterior row is 6 ( Figure 4b ).

Distribution: F. hexaptera is a cosmopolitan epiplanktonic species inhabiting the temperate and warm regions of all oceans. The species was documented in the Aegean Sea, Adriatic Sea ( Batistic et al., 2003), and Eastern Mediterranean ( Kehayias et al., 1994) and also its distribution reaches up to the Gulf of Aden, Red Sea, and North Sea. Until now, it was known only from the north

Figures

Figure 4. a) Flaccisagitta hexaptera (d’Orbigny, 1836); b) jaw of the species.