Limacia iberica Caballer, Almón & Pérez-Dieste, 2016
Limacia iberica @ Ria de Arousa (A Coruña, Galicia, Spain) per Jacinto Pérez Dieste (GEMM)
Taxonomia | Superdomain | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Gastropoda |
| Subclass | Heterobranchia |
| Infraclass | Euthyneura |
| Subterclass | Ringipleura |
| Superorder | Nudipleura |
| Order | Nudibranchia |
| Suborder | Doridina |
| Infraorder | Doridoidei |
| Superfamily | Polyceroidea |
| Family | Polyceridae |
| Subfamily | Triophinae |
| Genus | Limacia |
| Species | Limacia iberica Caballer, Almón & J. Pérez, 2016 |
| |
| Classificació segons Bouchet et al. (2017) Font taxonòmica: World Register of Marine Species (AphiaID: 866500). |
Descripció
Cos de color blanc amb taques de color vermell-ataronjat al dors i els costats del peu, amb el teixit ple de espícules llargues (de fins a 650 micres) que, en arribar a la superfície i travessar la pell, li donen un aspecte rígid. Té una cua curta i robusta. El dors és llis excepte per la presència de vuit petits tubercles amb els extrems de color taronja, situats en la línia mitjana, entre els rinòfors i la brànquia, així com 50 papil·les llargues i robustes, en forma de maça, amb l’extrem groc i un petit cos esfèric de color blanc a la punta, disposades al llarg de cada vora lateral. Els rinòfors són llargs, amb l’extrem taronja i tenen entre 17 i 19 làmines sensorials, amb beines rinofòriques baixes i de vora llisa a la base. La brànquia es compon de 3 fulles bipinnades de color blanc amb els extrems de color groc.
Limacia iberica és molt semblant morfològicament a Limacia clavigera, amb la qual va ser probablement confosa causa de la pobre descripció de Müller (la va descriure el 1776 amb 6 paraules, literalment, encara que el propi autor va ampliar posteriorment la informació amb més dades i il·lustracions en 1788 i 1806). Es diferencien perquè Limacia clavigera té moltes menys papil·les laterals (20-24) i, a més, són molt més curtes i acaben en una punta taronja (no blanca com a L.iberica). Limacia clavigera té el dors tuberculat i molt menys espiculat, mentre que a L.iberica només hi ha una filera migdorsal de 8 tubercles, mentre que la forma i la mida de les espícules del mantell són tan llargues i abundants que “trenquen” la pell i es veuen a simple vista. La cua de Limacia clavigera és més llarga i estilitzada i amb taques grogues. Els rinòfors són més curts i tenen menys làmines (10-14). Per últim Limacia clavigera no té dent raquídia, mentre que Limacia iberica en té una de rectangular.
Biologia
Els exemplars estudiats es van trobar en una paret de roca a 32 m de profunditat, en una zona sense algues. Limacia ibèrica es troba en aigües profundes i fredes, en zones de roques gairebé sense algues, on apareixen briozous com Schizoporella, dels que podria alimentar-se (Caballer et al., 2015 ).
Etimologia
- Limacia. Del Llatí “limax”, babosa, viscós.
- Iberica. Del Llatí “Iber”, habitant d’Ibèria. De la península Ibèrica.
Distribució
Els únics exemplars identificats fins el moment com a Limacia iberica han estat trobats a Galicia (plataforma “O Sobreiro”), a Cannes (França) i un exemplar amb trets intermitjos entre L.iberica i L.clavigera a la Punta Salines (L’Estartit). Probablement és una espècie més comuna del que sembla.
Abundància
Mediterrània occidental: | ★☆☆☆☆ |
Mediterrània oriental: | ☆☆☆☆☆ |
Oceà Atlàntic: | ★☆☆☆☆ |
MesAquesta gràfica mostra la probabilitat d´observació mensual de Limacia iberica basada en els nostres propis registres.
Altres fotos
Limacia cf. iberica with mixed traits with L.clavigera @ Punta Salines, L’Estartit, 19.09.2019 by Glenn Biscop
Limacia cf. iberica with mixed traits with L.clavigera @ Punta Salines, L’Estartit, 19.09.2019 by Glenn Biscop
Bibliografia
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Limacia iberica
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Ballesteros, M., M. Pontes, and E. Madrenas. 2019. Els nudibranquis del mar català. Brau Edicions, Figueres.
Ballesteros, M., E. Madrenas, and M. Pontes.
2023. OPK - Opistobranquis. (
https://opistobranquis.info/).
Caballer, M., B. Almón, and J. Pérez-Dieste. 2016. The sea slug genus Limacia Müller, 1781 (Mollusca: Gastropoda: Heterobranchia) in Europe. Cahiers de Biologie Marine. 57: 35:42.
Toms, J. A., M. Pola, S. Von der Heyden, and T. M. Gosliner. 2021. Disentangling species of the genus Limacia O.F. Müller, 1781, from southern Africa and Europe using integrative taxonomical methods, with the description of four new species. Marine Biodiversity. 51: 1–31.
WoRMS Editorial Board.
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http://www.marinespecies.org).
Bibliografia basada en els treballs de Steve Long, 2006. Bibliography of Opisthobranchia 1554-2000 i Gary McDonald, 2009. Bibliographia Nudibranchia, amb actualitzacions posteriors procedents d´altres fonts.
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Pontes, Miquel, Manuel Ballesteros, Enric Madrenas (2023) "Limacia iberica" a OPK-Opistobranquis. Publicat: 14/01/2016. Accedit: 22/09/2023. Disponible a (https://opistobranquis.info/ca/?p=21242)
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