Elysia manriquei

Elysia manriquei  Ortea & Moro, 2009

Elysia manriquei @ Taliarte, Gran Canaria 27-05-2014 in 6m by Pablo Samper Méndez

Taxonomy:
 

Superdomain

Biota  

 

Kingdom

Animalia  

 

Phylum

Mollusca  

 

Class

Gastropoda  

 

Subclass

Heterobranchia  

 

Infraclass

Euthyneura  

 

Subterclass

Tectipleura  

 

Superorder

Sacoglossa  

 

Superfamily

Plakobranchoidea  

 

Family

Plakobranchidae  

 

Genus

Elysia  

 

Species

Elysia manriquei  Ortea & Moro, 2009

 
 Classification according to Bouchet et al. (2017)
Taxonomic source: World Register of Marine Species (AphiaID: 555589).
Description
Body up to 30 mm in length, colored olive green (also in juveniles), covered with small conical papillae associated with some white spots, and black spots of two types, some simple and others in the form of rings around the glandular orifices. The density of the spots varies from one specimen to another. The inner side of parapodia is yellowish green, with no black spots (but in the pericardial area, which is olive green with black dots), and forms three lobes on either side of the animal, the first one behind the head, the second one in the middle of the body and the third one midway between the second and the tip of the tail. All studied specimens, both juveniles and adults, have the same number of parapodial lobes. The foot is short (about one fifth of the length of the animal) and is well-defined, being separated from the base of the parapodia by a transversal groove, its sides are parallel and the front edge is somewhat split in the middle, while the tail is short and tappered. The rhinophores are located in the anterior third of the head, are furrowed on the sides and quite rolled, so its appearance is almost cylindrical. They are relatively small and have white papillae and black spots similar to the ones on the rest of the body. The eyes, consisting of a black dot located within a crystal sphere, have roughly the same size as the black dots that decorate the body, and are located right behind each rhinophore. The anal papilla is located on the right side of the body, at the beginning of the parapodium, where there may be a black subcutaneous spot.

Biology
It is supposed to feed on the algae Caulerpa racemosa var. peltata and Caulerpa webbiana (on which it is a cryptic species). Spawn is laid on the algae it feeds on, and consists of yellowish cord with 85 micron capsules, each containing a small yellowish egg (about 55 microns in diameter) with orange extracapsular food. The animal usually directs its tail up, so it looks like another parapodial lobe. When the animal is feeding on the algae it sometimes unwinds the parapodial lobes and crushes against alga, where it becomes virtually undetectable. The animals emit a small cloud of a bluish white substance when disturbed, presumably as self-defense.

Etymology

  • Elysia. It is a girl’s name of Latin origin, derived from the word Elysium, which in mythology is the home of the blessed, known as the “Elysian fields”. The name Elysia also means “God’s oath” in Hebrew. Frieder Sauer comments that Elysia means heavenly.
  • Manriquei, in honor of César Manrique Cabrera (1919-1992), painter, sculptor, architect and artist from the Spanish island of Lanzarote, which combined his work with the defense of the environmental values of the Canary Islands, seeking harmony between the art and nature as a creative space.

Distribution
Elysia manriquei is relatively common in the localities where it has been sampled: Órzola and Arrecife (Lanzarote, Canary Islands) and Gando and Taliarte (Gran Canaria, Canary Islands), having been found at different times throughout the year.

Known georeferenced records of the species: Elysia manriquei
Sources:
: OBIS
: GROC 2010-2011
: Enric Madrenas
: João Pedro Silva
: Bernard Picton
: GBIF.ORG
: OPK
: VIMAR
: Manuel Ballesteros.
: M@re Nostrum
: Altres fonts
: Marine Regions

Abundance

    Western Mediterranean:
    Eastern Mediterranean:
    Atlantic Ocean:
This chart displays the observation probability for Elysia manriquei based on our own records.

More pictures

Bibliography

Further reading

Cite this article as:

Pontes, Miquel, Manuel Ballesteros, Enric Madrenas (2012-2018) "Elysia manriquei" in OPK-Opistobranquis, Published: 18/09/2016, Accessed: 18/02/2018 at (https://opistobranquis.info/en/UYpKt)

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