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Proyecto LEMGAL Victoriano Urgorri, Oscar García-Álva- FILO Mollusca Rez, Guillermo Díaz-Agras & Marcos P See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/328861937 FILO Mollusca, CLASE Monoplacophora. Chapter · November 2017 CITATIONS READS 0 1,436 4 authors: Victoriano Urgorri Oscar García-Álvarez University of Santiago de Compostela University of Santiago de Compostela 295 PUBLICATIONS 1,070 CITATIONS 103 PUBLICATIONS 1,818 CITATIONS SEE PROFILE SEE PROFILE Guillermo Díaz-Agras Marcos Perez Señarís University of Santiago de Compostela University of Santiago de Compostela 83 PUBLICATIONS 114 CITATIONS 34 PUBLICATIONS 69 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: DIVA ARTABRIA II View project LEMGAL- Check-list of marine species from Galician waters View project All content following this page was uploaded by Victoriano Urgorri on 11 November 2018. The user has requested enhancement of the downloaded file. Inventario de la biodiversidad marina de Galicia Proyecto LEMGAL Victoriano Urgorri, Oscar García-Álva- FILO Mollusca rez, Guillermo Díaz-Agras & Marcos P. Señarís FILO Mollusca CLASE Monoplacophora Victoriano Urgorri, Oscar García-Álvarez, Guillermo Díaz-Agras & Marcos P. Señarís Estación de Bioloxía Mariña da Graña, Universidade de Santiago de Compostela (EBMG-USC), Rúa da Ribeira 1, A Graña, 15590 Ferrol, España. Laevipilina rolani Warén & Bouchet, 1990 Los monoplacóforos son moluscos de pequeño tamaño con el dorso recubierto por una concha bilate- ralmente simétrica de 0,84-37 mm de longitud, 0,76-35 mm de anchura y 0,38-13,9 mm de altura, de aspecto pateliforme, en forma de escudo y con el ápice medial dirigido al borde anterior. En la región ventral se encuentra el pie, casi circular, que está rodeado por una cavidad paleal peripedal donde se sitúan de 3 a 6 pares de ctenidios ordenados serialmente. Antero-ventralmente, delante del pie, se sitúa la cabeza, poco diferenciada, sin ojos ni tentáculos cefálicos; la boca se sitúa en el centro, rodeada por los labios anterior y posterior y flanqueada lateralmente por un pliegue ciliado llamado velo; posterior- mente se sitúan los tentáculos post-orales, cortos, claviformes y dispuestos en dos haces. Son moluscos bentónicos que viven preferentemente en sustratos duros, pero tambien en fondos sedimentarios y en áreas de fuentes hidrotermales. Su rango de distribución batimétrica es amplio, entre 174 m y 6489 m de profundidad (Urgorri et al. 2014). La primera especie viva descubierta fue Laevipilina galathea recolectada a 3590 m de profundidad en fondos fangosos del Pacifico costarricense; antes solamente eran conocidos en el registro fósil. La clase 272 VICTORIANO URGORRI, OSCAR GARCÍA-ÁLVAREZ, GUILLERMO DÍAZ-AGRAS & MARCOS P. SEÑARÍS comprende 30 especies recientes, cuya clasificación está basada en la estructura de la concha, la anatomía y las características radulares (Urgorri et al. 2014). Del océano Atlántico se conocen 9 especies, de las que 7 se encuentran en el Atlántico norte y una en el Mediterráneo. En la península Ibérica se conocen dos especies: Laevipilina cachuchensis en la costa norte y Laevipilina rolani en las costas de Galicia (Urgorri et al. 2014). Laevipilina rolani se ha encontrado en una comunidad de corales de aguas frías a 985-1000 m de profundidad en el Banco de Galicia (Warén & Bouchet 1990) y en fondos de nódulos polimetálicos con abundante fauna sésil, placas calcáreas, escoria de carbón y pequeñas piedras a 843 m de profundidad en el Banco A Quiniela (Urgorri & Troncoso 1994). Bibliografía Urgorri, V. & Troncoso, J.S. (1994) A second record of Laevipilina rolani Warén & Bouchet, 1990 (Mollusca: Monoplacophora) from the Northwest of Spain. Journal of Molluscan Studies, 60, 157–163. Urgorri, V. García-Álvarez, O. & Troncoso, J.S. (2002) Las clases menores de moluscos. In: Galicia. Naturaleza. Tomo XXXVII: Zoología I. Hércules de Ediciones S.A., A Coruña, pp. 392–431. Urgorri, V., García-Álvarez, O. & Troncoso, J.S. (2014) Monoplacophora. In: Mollusca, Solenogastres, Caudofoveata, Monoplacofora. Fauna Ibérica, vol. 38. Ramos, M.A. et al. (Eds.) Museo Nacional de Ciencias Naturales CSIC, Madrid, pp. 221–252. Warén, A. & Bouchet, P. (1990) Laevipilina rolani, a new Monoplacophoran from off Southwestern Europe. Journal of Molluscan Studies, 56, 449–453. FILO MOLLUSCA 273 FILO MOLLUSCA Clase Monoplacophora Orden Tryblidiida F. Neopilinidae Laevipilina rolani Warén & Bouchet, 1990 View publication stats.
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