Pteropodos tecosomados en el Pacífico sur oriental frente a Caldera, Chile (27° lat. S) (Mollusca, Opistobranchiata: Euthecostomata y Pseudothecostomata)

Guillermo Guzmán Gómez


DOI: https://doi.org/10.3856/vol43-issue1-fulltext-7

Abstract


The thecosomate gastropods collected during the CIMAR 5 – Oceanic Islands Cruise are reported. 18 species were identified in a total of 2.021 specimens, being Clio pyramidata and Styliola subula the most dominant species along the cruise transect and the most frequent ones, represented in 18 of 23 stations. The most abundant species were S. subula (35%), C. pyramidata (28%) y Cavolinia inflexa (13%).

The following species are new reports for the south eastern Pacific: Cavolinia inflexa labiata (d’Orbigny, 1836), Cavolinia uncinata (Rang, 1829), Cavolinia gibosa flava (d’Orbigny, 1836), Cuvierina columnella (Rang, 1827), Clio cuspidata (Bosc, 1802), Clio chaptali (Gray, 1850), Diacria trispinosa  trispinosa (de Blainville, 1821), Diacria quadridentata (de Blainville, 1821), Diacria major (Boas, 1886), Cymbulia sp. and  Peraclis reticulata (d’Orbigny, 1836).

The species presence/absence by stations, their abundances, species richness and diversity showed the existence of a neritic assemblage (71-79ºW), an oceanic assemblage (82-105ºW) and a thalasoepipelagic assemblage associated to the oceanic islands. 

 


Guzmán Gómez G. Pteropodos tecosomados en el Pacífico sur oriental frente a Caldera, Chile (27° lat. S) (Mollusca, Opistobranchiata: Euthecostomata y Pseudothecostomata). Lat. Am. J. Aquat. Res.. 2016;43(1). Available from: doi:10.3856/vol43-issue1-fulltext-7 [Accessed 22 Jan. 2019].
Guzmán Gómez, G. (2016). Pteropodos tecosomados en el Pacífico sur oriental frente a Caldera, Chile (27° lat. S) (Mollusca, Opistobranchiata: Euthecostomata y Pseudothecostomata). Latin American Journal of Aquatic Research, 43(1). doi:http://dx.doi.org/10.3856/vol43-issue1-fulltext-7