Aidanosagitta neglecta
Aida (1897)
Download a fact sheet for Aidanosagitta neglecta (PDF 305KB)
Taxonomy
| Phylum | Chaetognatha |
| Class | Sagittoidea |
| Order | Aphragmophora |
| Family | Sagittidae |
| Genus | Aidanosagitta |
| Species |
neglecta |
Size
- Maximum adult body length 8 mm
- Tail 26-30% of body length
Distinguishing characteristics
- Body firm, opaque, slender
- Head narrow but rounded
- Hooks not serrated
- Fin bridge absent
- Anterior fins start close to the ventral ganglion; of medium length, fully rayed, rounded
- Posterior fins of medium length, fully rayed, rounded
- Long, narrow collarette
- Large eyes, with star-shaped pigment spot
- Seminal vesicles with knob and trunk touching; or close to posterior fins but separated from tail fin
- Ovaries long, reaching to neck region
- Ova large
Distribution
- Epipelagic
- Indo-Pacific between 30°S to 30°N
Ecology
- Opportunistic predators that detect prey by sensing their movement, e.g. beating motions of larvaceans
- Will feed on other chaetognath species
- Exhibits diel vertical migratory behaviour
References
- Alvarino (1967)
- Conway, D. V. P., White, R.G., Hugues-Dit-Ciles, J., Gallienne, C.P. and Robins, D.B. (2003). Guide to the coastal and surface zooplankton of the south-western Indian Ocean, Marine Biological Association of the United Kingdom
- Gibbons, M.J. pers. comms. (2012)
- Lie et al. (2012)
- Marine species identification portal at http://species-identification.org/index.php