Physical Description

Diagnostic Description

Description

Up to 7 cm . One of the most common aeolids found, this species has many clusters of cerata on each side. Body colour can be pale to dark purple, although brown and green specimens are not uncommon. The fat rhinophores and very long oral tentacles are banded with violet and white. Brown and green pigments are due to the presence of symbiotic zooaxanthellae which continue to photosynthesise. Nematocysts are also present in the tips of the cerata and these, together with the zooaxanthellae, are presumed to be derived from coelenterate prey. Habitat: diverse, among shallow coral reefs. Distribution: Indo-Pacific. N.B. can inflict a painful sting to humans.
  • Richmond, M. (Ed.) (1997). A guide to the seashores of Eastern Africa and the Western Indian Ocean islands. Sida/Department for Research Cooperation, SAREC: Stockholm, Sweden. ISBN 91-630-4594-X. 448 pp.
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Source: World Register of Marine Species

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Ecology

Habitat

Depth range based on 93 specimens in 1 taxon.
Water temperature and chemistry ranges based on 93 samples.

Environmental ranges
  Depth range (m): 6 - 17
  Temperature range (°C): 24.351 - 28.048
  Nitrate (umol/L): 0.033 - 0.073
  Salinity (PPS): 34.768 - 35.290
  Oxygen (ml/l): 4.590 - 4.840
  Phosphate (umol/l): 0.074 - 0.125
  Silicate (umol/l): 1.197 - 1.572

Graphical representation

Depth range (m): 6 - 17

Temperature range (°C): 24.351 - 28.048

Nitrate (umol/L): 0.033 - 0.073

Salinity (PPS): 34.768 - 35.290

Oxygen (ml/l): 4.590 - 4.840

Phosphate (umol/l): 0.074 - 0.125

Silicate (umol/l): 1.197 - 1.572
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Pteraeolidia ianthina

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Pteraeolidia ianthina

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Pteraeolidia ianthina

Pteraeolidia ianthina is a species aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.[2][3]

Distribution[edit]

They are found in diverse habitats and among shallow coral reefs throughout Western Pacific Ocean, from Hawaii to the Philippines, to the Northeast Australian waters and New Zealand, also in the Red Sea.

Description[edit]

Pteraeolidia ianthina, one of the most common aeolids found, is often called a "blue dragon" by Eastern Australian divers because of its close resemblance to a Chinese dragon.[4] It is one of the most common aeolid nudibranchs found in Eastern Australia. It can inflict a painful sting to humans.

The body color of this species is translucent tan, but the cerata, which vary from dark purple to lavender to golden brown, give the nudibranch most of its distinct color, green specimens are not uncommon.

Anterior view of a Blue Dragon nudibranch, Pteraeolidia ianthina

The slug is very elongated (7 cm) with many clusters of medium-large sized cerata along the length of the body. The fat rhinophores and the long cephalic tentacles have at least two dark purple bands that stand out. The tips of the cerata contain nematocysts.

Symbiodinium continue to photosynthesise inside the body and give rise to brown and green pigments. Symbiodinium, together with the nematocysts, are presumed to be derived from coelenterate prey. These Symbiodinium occur within vacuoles in host cells derived from the endoderm.[5]

Young specimens are much shorter, have fewer cerata, and are often mistaken for other nudibranch species.[3][6]

Solar powered[edit]

This sea slug has evolved the ability to photosynthesize. This is possible because the slug feeds on hydroids which contain Symbiodinium, microscopic dinoflagellates that are photosynthetic — a phenomenon called kleptoplasty. The nudibranch farms Symbiodinium within its own digestive diverticula, where the Symbiodinium photosynthesizes sugars to be used by the slug.[7]

References[edit]

  1. ^ a b (French) Angas G. F. (1864). "Description d'espèces nouvelles appartenant à plusieurs genres de Mollusques Nudibranches des environs de Port-Jackson (Nouvelle-Galles du Sud), accompagnée de dessins faits d'après nature". Journal de Conchyliologie, series 3, 12: 43-70, pls. 4-6. Description is the page 66-67. Plate 6, figure 6.
  2. ^ Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. Classification and nomenclator of gastropod families. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. ISBN 3-925919-72-4. ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278
  3. ^ a b Rosenberg, G. (2012). Pteraeolidia ianthina. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=213527 on 1 September 2012
  4. ^ http://www.philippine-seaslugs.com/AEOLIDINA/Pteraeolidia_ianthina.htm Pteraeolidia ianthina
  5. ^ Sutton & Hoegh-Guldberg, Host-Zooxanthella Interactions in Four Temperate Marine Symbioses; Assessment of Effect of Host Extract on Symbionts; The Biological bulletin, Marine Biological Laboratory (Woods Hole, Mass.). v. 178 (1990) p. 175
  6. ^ http://seaslugsofhawaii.com/species/Pteraeolidia-ianthina-a.htm Pteraeolidia ianthiana by Cory Pittman and Pauline Fiene
  7. ^ http://www.seaslugforum.net/factsheet.cfm?base=pteriant

Further reading[edit]

  • Rudman, W. B. (1982). "The taxonomy and biology of further aeolidacean and arminacean nudibranch molluscs with symbiotic zooxanthellae. Zoological Journal of the Linnean Society 74(2):147-196.
  • Yonow, N., R. Anderson C. & ButtressS. G. (2002). "Opisthobranch molluscs from the Chagos archipelago, central Indian Ocean". Journal of Natural History 36(7): 831-882.
  • Richmond, M. (Ed.) (1997). A guide to the seashores of Eastern Africa and the Western Indian Ocean islands. Sida/Department for Research Cooperation, SAREC: Stockholm, Sweden. ISBN 91-630-4594-X. 448 pp. (
  • Willan, R. (2009). Opisthobranchia (Mollusca). In: Gordon, D. (Ed.) (2009). New Zealand Inventory of Biodiversity. Volume One: Kingdom Animalia. 584 pp
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