Luidia sarsi
| Luidia sarsi | |
|---|---|
 | |
| Larval stage | |
| Scientific classification | |
| Kingdom: | Animalia |
| Division: | Echinodermata |
| Subdivision: | Asterozoa |
| Class: | Asteroidea |
| Order: | Paxillosida |
| Family: | Luidiidae |
| Genus: | Luidia |
| Species: | L. sarsi |
| Binomial name | |
| Luidia sarsi Düben & Koren, 1846 | |
The Luidia sarsi is a species of starfish. Sand colored with a velvety texture, the species expresses pentamerism or pentaradial symmetry as adults. The five gently tapering arms have conspicuous bands of long white marginal spines in groups of three. Luidia sarsi grow to approximately 20 cm across and are found in deeper water (20 m+) from Norway to the Mediterranean but in deep colder water in the south. They are usually found on muddy sediment and are most active at night, burying themselves under the sand during the day. Luidia sarsi larva develop from a fertilized egg and are unique in a number of respects. The larva of the species attains an unusual size (up to 35 mm[1]) and a juvenile starfish develops inside the larva. During metamorphosis the juvenile migrates to the outside and detaches from the swimming larval bipinnaria stage. The larva continues to live separately for several months.[2]
Further Reading
Domanski, P. A. (1984). "GIANT LARVAE PROLONGED PLANKTONIC LARVAL PHASE IN THE ASTEROID LUIDIA-SARSI". Marine Biology (Berlin) 80 (2): 189–196. doi:10.1007/BF02180186. Doxa, Chrisa K.; Kentouri, Maroudio; Divanach, Pascal (2 December 2012). "Feeding of Charonia Seguenza (Aradas & Benoit, 1870) on Natural Prey and Alternative Foods". Journal of Molluscan Studies 79 (Part 1): 76-78. doi:10.1093/mollus/eys029. Retrieved 26 April 2015.
Sumida, Paulo Y. G.; Tyler, Paul A.; Billett, Davis S. M. (January 2001). "Early juvenile development of deep-sea asteroids of the NE Atlantic Ocean, with notes on juvenile bathymetric distributions". Acta Zoologica 82 (1): 11–40. doi:10.1046/j.1463-6395.2001.00058.x.
Wilson, Douglas P (May 1978). "Some Observations on Bipinnariae and Juveniles of the Starfish Genus Luidia". Journal of the Marine Biological Association of the United Kingdom 58 (02): 467-478. doi:10.1017/S0025315400028125.
Mifsud, C. (Dec, 2009). "Remarks on Echinodermata from the South Central Mediterranean Sea based upon collections made during the MARCOS cruise". MEDITERRANEAN MARINE SCIENCE 10: 63–71. Retrieved 1 May 2015. Check date values in: |date= (help)
References
- ↑ Domanski, PA (June 1984). "Giant larvae: Prolonged planktonic larval phase in the asteroid Luidia sarsi". Marine Biology (Springer-Verlag) 80 (2): 189–195. doi:10.1007/BF02180186.
- ↑ "Luidia". The Integrator (Website of the University of Illinois at Urbana Integrative Biology program). Retrieved September 17, 2004.