Tritonia manicata

Tritonia manicata (Deshayes, 1853)

Tritonia manicata by Enric Madrenas

Taxonomy
 

Superdomain

Biota  

 

Kingdom

Animalia  

 

Phylum

Mollusca  

 

Class

Gastropoda  

 

Subclass

Heterobranchia  

 

Infraclass

Euthyneura  

 

Subterclass

Ringipleura  

 

Superorder

Nudipleura  

 

Order

Nudibranchia  

 

Suborder

Cladobranchia  

 

Superfamily

Tritonioidea  

 

Family

Tritoniidae  

 

Genus

Tritonia  

 

Species

Tritonia manicata  Deshayes, 1853

 
 Classification according to Bouchet et al. (2017)
Taxonomic source: World Register of Marine Species (AphiaID: 141736).
Synonyms

  • Candiella villafranca Vayssière, 1901
  • Duvaucelia gracilis Risso, 1826
  • Nemocephala marmorata Costa A., 1867
  • Tritonia moesta Bergh, 1884

Description
The body, like in other species of the same genus, is tall and with a square section. Animals are small and can reach a size of just over 10 mm long. The background color of the body is whitish but the dorsum appears darkened by an elongated and of irregular contour dark brown, almost black, stain, continuous in many specimens, which runs from the back of the head to the tail. Spots of the same color are also appreciated in front of the rhinophores and on the side walls of the body, in this case in the form of small irregular spots and, in some animals, aligned as a discontinuous stripe. In some specimens the spots on the dorsum and sides of the body could be reddish. The head has a semitransparent cephalic veil with 4-6 fingerings in the front. The rhinophores are short and cylindrical, with 2-3 poorly developed lamellae and a small number of digitations directed obliquely and forward. The rhinophore is surrounded at its base by a wide whitish sheath which also could be coloured in dark brown pigment. The eyes are seen by transparency in the center of the base of the rhinophores. The back has 3-4 white little branched processes on each side. The genital opening and anus are located on the right side of the body, at the height of the first and second dorsal process. The foot is rounded in the front area and is broad in the tail, widely protruding underneath the dorsum; it is coloured whitish.

Biology
This species is usually found in dimly lit shallow rocky walls with an abundance of seaweeds, sponges and hydrarians. In these walls abound anthozoan cnidarians of the stoloniferous group, of the genus Cornularia and Clavularia, on which it apparently feeds. It can also be found between rhizomes of Posidonia oceanica.

Etymology

  • Tritonia. The genus Tritonia is dedicated to Triton, in Greek mythology the god of the sea, son of Poseidon and Amphitrite, portrayed as having the head and trunk of a man and the tail of a fish.
  • Manicata. From Latin “manicatus”, with sleeves, alluding the rhinophoric sheaths.

Distribution
This species is mainly distributed across all Mediterranean coastlines but there are cites from the Atlantic coast of Morocco and in the British Isles. In the Iberian Peninsula it has been found in all coastal areas and also in the Balearic islands. In Catalonia it has been cited in several localities of the Costa Brava (Es Caials, Illes Medes, Estartit, Cala Aiguablava, Llafranc, Cala Santa Cristina, Tossa de Mar) and also in Vilassar de Mar.

Known georeferenced records of the species: Tritonia manicata
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

References for the species: Tritonia manicata

    Cantabria: Ortea (1977a,b), Fernández-Ovies (1981). All as Duvaucelia. Galicia: Ortea (1977a,b), Fernández-Ovies (1981), Urgorri and Besteiro (1983). Portugal: De Oliveira (1895), Hidalgo (1916), Nobre (1932) (all these as T. moesta), García-Gómez et al. (1991a), Calado et al. (1999, 2003). Andalucía (Atl.): Cervera and García (1986). Gibraltar: García-Gómez (1983), García-Gómez et al. (1989). Andalucía (Med.): Luque (1983, 1986, as Duvaucelia), Ballesteros et al. (1986, as Duvaucelia), Hergueta and Salas (1987, as Duvaucelia), Templado, Luque and Moreno (1988), Sánchez Tocino, Ocaña and García (2000a). Levante: Templado (1982b, 1983, 1984), Ballesteros (1985), Ballesteros et al. (1986) (all of them as Duvaucelia), Marín and Ros (1987), Templado et al. (2002). Catalunya: Ros (1975, 1978b, 1985b), Ros & Altimira (1977), Ballesteros (1980, 1985), Altimira et al. (1981), Huelin & Ros (1984), M@re Nostrum [Illa Mateua (L'Escala) 7/1999]. Todas las citas excepto M@re Nostrum como Duvaucelia. Baleares: Templado (1982a), Ballesteros, Álvarez and Mateo (1986). Both records as Duvaucelia.

    General: Brown, 1978a:305; Brown & Picton, 1979:3; Cattaneo-Vietti, Chemello, & Giannuzzi-Savelli, 1990:137[P]; Haefelfinger, 1963:62; Luque, 1983:61; Perrone, 1986a:23; Picton & Morrow, 1994:30[P]; Pruvot-Fol, 1937:532; Riedl, 1983:321; Schmekel, 1970:174; Schmekel & Portmann, 1982:143[P]; Templado, Luque, & Moreno, 1988:18; Thompson, 1988:112; Thompson & Brown, 1984:14[P]

    Sources: Cervera et al., 2004, Ballesteros, 2007 & 2016, McDonald, 2006 and other sources.

Abundance

    Western Mediterranean:1 out of 5 stars
    Eastern Mediterranean:1 out of 5 stars
    Atlantic Ocean:1 out of 5 stars
Month

This chart displays the monthly observation probability for Tritonia manicata based on our own records.

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Bibliography

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Further reading

Cite this article as:

Ballesteros, Manuel, Enric Madrenas, Miquel Pontes (2012-2019) "Tritonia manicata" in OPK-Opistobranquis, Published: 16/05/2012, Accessed: 24/07/2019 at (https://opistobranquis.info/en/VzEij)

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