“Iheyaspira bathycodon” new species (Vetigastropoda: Trochoidea: Turbinidae: Skeneinae) from the Von Damm Vent Field, Mid-Cayman Rise

Nye, Verity (2012) “Iheyaspira bathycodon” new species (Vetigastropoda: Trochoidea: Turbinidae: Skeneinae) from the Von Damm Vent Field, Mid-Cayman Rise. Prof Paul Tyler Retirement Meeting: Deep-Sea Biodiversity and Life-History Processes, Southampton, United Kingdom. 06 - 07 Jun 2012.

Abstract

Gastropoda are one of the most species-rich macrofaunal taxa from hydrothermal vents, and form a dominant component of assemblages at vent fields in western Pacific back-arc basins and on the Central and Southwest Indian Ridges (e.g., Sasaki et al., 2010; Tao et al., 2012). More than 200 species of gastropods from at least 100 genera and 35 families have been recorded from deep-sea chemosynthetic environments of the world’s oceans (Sasaki et al., 2010). Turbinids endemic to deep-sea chemosynthetic environments currently belong to either the Skeneinae Clarke, 1851 or the Margaritinae Thiele, 1924. The Von Damm Vent Field is an active, high-temperature hydrothermal system, on the Mid- Cayman Rise, situated in a unique off-axis setting on the upper slopes of an oceanic core complex at 2300 m depth (Connelly et al., 2012). It supports an abundant faunal assemblage that is dominated by dense aggregations of the shrimp Rimicaris hybisae Nye, Copley & Plouviez, 2012, and includes numerous small skeneimorph gastropods, defined and named as “Iheyaspira bathycodon” sp. nov. (Nye, Copley, Linse & Plouviez, in press).

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