Berghia marinae

Berghia marinae Carmona, Pola, Gosliner & Cervera, 2014

Berghia marinae @ Mataró by Manuel Ballesteros

Taxonomy
 

Superdomain

Biota  

 

Kingdom

Animalia  

 

Phylum

Mollusca  

 

Class

Gastropoda  

 

Subclass

Heterobranchia  

 

Infraclass

Euthyneura  

 

Subterclass

Ringipleura  

 

Superorder

Nudipleura  

 

Order

Nudibranchia  

 

Suborder

Cladobranchia  

 

Superfamily

Aeolidioidea  

 

Family

Aeolidiidae  

 

Genus

Berghia  

 

Species

Berghia marinae  Carmona, Pola, Gosliner & Cervera, 2014

 
 Classification according to Bouchet et al. (2017)
Taxonomic source: World Register of Marine Species (AphiaID: 827719).
Description
The body is elongate and slender, tapering gradually to the posterior end of foot. Body colour is translucent white with opaque bright white spots on the notum that is otherwise light brown due to the digestive gland inside. The pericardium is more or less covered by an orange mark (can be almost invisible or brightly coloured). Each side of the head has a boomerang-shaped orange patch, tapering gradually to the base of the oral tentacles. The oral tentacles are coloured brownish with iridescent white or pale yellow granulations colouring the tips. The rhinophores are orange in the basal part and become yellowish to the tip, which is white. The rhinophores are densely papillate on rear side, with papillae more or less rounded on posterior side, but elongate and perpendicular on the sides. The eyes are visible behind the base of the rhinophores. Oral tentacles are elongate and larger than the rhinophores. The cerata, slender and quite uniform in diameter throughout most their length, are coloured brownish with greyish translucent white pigmentation on the tips (round tipped in the original species description from Senegal, sharp tipped in the Mediterranean specimens). Inside them, the digestive gland is light brown and occupies almost the entire interior of the cerata. There is a thin subapical dull yellowish ring. Cnidosacs are white. Cerata are inserted to the body forming up to seven arches on each side of the body, extending from the back of the rhinophores almost to the posterior end of the foot. Each arch has between 3 and 20 cerata, decreasing in size towards the sides and towards the tail. There are orange lines following the inner borders of the ceratal insertions. The anus is located on the right side of the body, below the second ceratal arch. Genitalia is also located on the right side, among the cerata of the anterior-most group. The foot is broad and almost translucent, and on the anterior part it has well developed tentaculiform and also translucent propodial palps. The tail is long and sharp.

Biology
Due to its recent description, little is known about its food, but like other species of the genus, it feeds on cnidaria. The eggstring is laid forming a 4 whorl anti-clockwise spiral of small white eggs.

Etymology

  • Marinae, named after Marina Poddubestkaia, who provided the authors several Aeolidiidae species from France.

Distribution
Known only from Senegal (original description) and from Mataró (Barcelona, Spain) where it becomes the first report for the Mediterranean Sea.

Known georeferenced records of the species: Berghia marinae
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

Similar species
Berghia marinae is clearly distinguishable from other members of the genus by its coloration. Only B. stephanieae may have similar colouration of the cerata, but it lacks the orange lines on the ceratal insertions found in B. marinae and also has a completely different ceratal arrangement and geographical distribution. The specimen found on the Spanish coast of Mataró shows a different colouration pattern compared to the original description of B. marinae from Senegal, externally resembling B. columbina, however, the molecular phylogenetic hypothesis supports the validity of B. marinae. This could be due to an ecological adaptative approach in which the strategy used by the Senegal population is to live unnoticed, while the Mediterranean population, with its vivid colours, warns its predators in the same way as B. columbina (see Galià-Camps et al., 2020, p.196-197).

Abundance

    Western Mediterranean:1 out of 5 stars
    Eastern Mediterranean:0 out of 5 stars
    Atlantic Ocean:1 out of 5 stars
Month

This chart displays the monthly observation probability for Berghia marinae based on our own records.

More pictures

Bibliography

    Ballesteros, M., E. Madrenas, and M. Pontes. 2021. OPK - Opistobranquis. (https://opistobranquis.info/).
    Ballesteros, M., M. Pontes, and E. Madrenas. 2019. Els nudibranquis del mar català. Brau, Figueres.
    Carmona, L., M. Pola, T. M. Gosliner, and J. L. Cervera. 2014. The atlantic-mediterranean genus Berghia Trinchese, 1877 (Nudibranchia: Aeolididiidae): taxonomic review and phylogenetic analysis. Journal of Molluscan Studies, 80: 482-498.
    Edmunds, M. 2015. Opisthobranchiate Mollusca from Ghana, Aeolidiidae, with consideration of several caribbean species. Journal of Conchology Vol. 42(2): 125-161.
    Galià-Camps, C., L. Carmona, A. Cabrito, and M. Ballesteros. 2020. Double trouble. A cryptic first record of Berghia marinae Carmona, Pola, Gosliner & Cervera 2014 in the Mediterranean Sea. Mediterranean Marine Science. 21: 191–200.

    Bibliography based on the works by Steve Long, 2006. Bibliography of Opisthobranchia 1554-2000 and Gary McDonald, 2009. Bibliographia Nudibranchia, with later updates from other resources.

Further reading

Cite this article as:

Pontes, Miquel, Manuel Ballesteros, Enric Madrenas (2021) "Berghia marinae" in OPK-Opistobranquis. Published: 06/12/2020. Accessed: 27/01/2021. Available at (https://opistobranquis.info/en/IZWR0)

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