Elysia gordanae (Thompson & Jaklin, 1988)
Elysia gordanae@L´Escala, Girona by Enric MadrenasTaxonomy
Elysia margaritae Fez, 1962
| ||Classification according to Bouchet et al. (2017)|
Taxonomic source: World Register of Marine Species (AphiaID: 182791).
Ortea et al. (2017) proposed the synonymy between E. gordanae
and E. margaritae
, actually accepted by WoRMS, but it is questionable because of a huge difference in size of these species: E. margaritae
was described on the basis of few specimens 33-44 mm long, while E. gordanae
is much smaller and usually its size is less than 10 mm. On the other hand, there is another taxon, Elysia hetta
Perrone, 1990, that is closely related to E. gordanae
and is also currently accepted as valid by WoRMS. It is very probable that E. hetta
‘s description was based on juveniles of E. gordanae
, so it could be a junior synonym of that species. (text based on Jakov Prkić, pers.comm.). We keep E. gordanae
as valid until further works are published on the subject.
Specimens of this species can grow up to 30 mm in length. The general color is greenish but it is not homogeneous, and there are usually numerous white and pink scores and granulations that lightens the hue of the body. On both sides of the head there are very faintly pigmented iridescent blue areas. The rhinophores are narrow, are rolled and are relatively short; their color is greenish and they are sprayed with white spots. The eyes are very visible right behind the rhinophores base. The parapodia are underdeveloped and use to open in angle in its anterior third. The edge of the parapodia is thickened and edged with a darker green with small whitish bumps. The dorsal vessels are very inconspicuous.
This species usually lives among green algae from the intertidal zone to down to 30 m depth. This species has been found on algae and Bryopsis and Derbesia noted that feeds the algae Cladophora chlorophycean and is able to retain their chloroplasts in his body, with a high turnover rate (Marín & Ros, 1988). The setting is a thick whitish cord wound in a spiral ondulosa (Gofas, Moreno & Salas, 2011).
- 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.
- Gordanae. In honour of Gordana Jaklin (19??-) likely related to one of the authors.
In addition to the type locality on the coast of Slovenia, the species has been cited only in the Iberian Peninsula (Andalusian coast, Levantine and Catalan), Canary Islands, Azores (Cervera et al. 2004) and Balearic Islands (Menorca). In Catalonia, it has been observed in Es Caials, L’Escala and the Medes Islands.
References for the species: Elysia gordanae
Andalucía (Atl.): Cervera and López-González (1996).
Andalucía (Med.): García Raso et al. (1992).
Canarias: Ortea et al. (1998, 2001, 2003, all as E. margaritae), Moro et al. (2003, as E. margaritae), Wirtz and Debelius (2003, as E. margaritae).
Azores: Wirtz and Debelius (2003, as E. margaritae).
Sources: Cervera et al., 2004, Ballesteros, 2007 & 2016, McDonald, 2006 and other sources.
MonthThis chart displays the monthly observation probability for Elysia gordanae based on our own records.
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.
Ballesteros, M. 2007. Lista actualizada de los opistobranquios (Mollusca: Gastropoda: Opisthobranchia) de las costas catalanas. Spira. 2: 163–188.
Ballesteros, M., M. Pontes, and E. Madrenas. 2015. Opisthobranch from Medes Islands (Marine Protected Area, Costa Brava, Catalonia, NE Spain): 40 years of study.
Ballesteros, M., E. Madrenas, and M. Pontes. 2016. Actualización del catálogo de los moluscos opistobranquios (Gastropoda: Heterobranchia) de las costas catalanas. Spira 6(2016): 1-28.
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McDonald, G. 2009
. Bibliographia Nudibranchia. 2nd Online Edition, Annotated. 1072 pp Institute of Marine Sciences, University of California, Santa Cruz. (http://escholarship.org/uc/item/8115h0wz
Ortea, J., L. Moro, and J. Espinosa. 1997b. Nuevos datos sobre el género Elysia Risso, 1818 (Opisthobranchia: Sacoglossa) en el atlántico. Revista de la Academia Canaria de Ciencias 9 (2, 3 and 4): 141-155.
Poursanidis, D., and D. Koutsoubas. 2015. On the occurrence of Elysia gordanae Thompson & Jaklin, 1988 (Mollusca, Opisthobranchia) in East Mediterranean Sea. Marine Biodiversity. 1–2.
Prkić, J., A. Petani, Ð. Iglić, and L. Lanča. 2018. Stražnjoškržnjaci Jadranskoga Mora: Slikovni Atlas i Popis Hrvatskih Vrsta / Opisthobranchs of the Adriatic Sea: Photographic Atlas and List of Croatian Species. Ronilaćki Klub Sveti Roko, Bibinje.
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. Elysia gordanae accessed through: Sea Slug Forum on 2014-12-14. (http://seaslugforum.net/showall/elysgord
Templado, J., and R. Villanueva. 2010. Checklist of Phylum Mollusca. pp. 148-198 In Coll, M., et al., 2010. The biodiversity of the Mediterranean Sea: estimates, patterns, and threats. PLoS ONE 5(8):36pp.
Thompson, T. E., and A. Jaklin. 1988. Eastern Mediterranean Opisthobranchia: Elysiidae (Sacoglossa = Ascoglossa). Journal of Molluscan Studies. 54: 59–69.
Trainito, E., and M. Doneddu. 2014. Nudibranchi del Mediterraneo, 2a. ed. Il Castello.
Wirtz, P., and H. Debelius. 2003. Mediterranean and Atlantic invertebrate guide. ConchBooks, Hackenheim, Germany.
WoRMS Editorial Board
. World Register of Marine Species. WoRMS. (http://www.marinespecies.org
Cite this article as:
Ballesteros, Manuel, Enric Madrenas, Miquel PontesIn order to copy this cite or text fragments you must be a registered user.
(2012-2020) "Elysia gordanae"
, Published: 14/05/2012, Accessed: 01/12/2020 at (https://opistobranquis.info/en/IiP74