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Abstract
Reproductive biology of two hydrothermal vent Cocculinidae species (Mollusca: Gastropoda) from the Arctic and Southern Ocean
Highlights
The deep ocean is a vast biome without sunlight which includes chemosynthetic habitats such as hydrothermal vents and cold seeps (Ramirez-Llodra et al 2010)
There was a significant difference in length between C. enigmadonta and C. aurora (Two sample Kolmogorov-Sample test, Z = 8.646, N1 = 153, N2 = 148, p < 0.05)
This study describes the reproductive biology of the first cocculinid species sampled from hydrothermal vents, Cocculina enigmadonta from vents in the Southern Ocean and Cocculina aurora collected from vents under permanent ice cover in the Arctic
Summary
The deep ocean is a vast biome without sunlight which includes chemosynthetic habitats such as hydrothermal vents and cold seeps (Ramirez-Llodra et al 2010). These habitats host high in situ microbial primary productivity via chemosynthesis (Tyler and Young 1999; Van Dover 2000), which in turn supports a high faunal biomass compared with. Hydrothermal vents are dynamic chemosynthetic environments, with temperature and chemical gradients that fluctuate over short time-scales and spatialscales (Bayer et al 2011). Individual vent fields represent insular habitats, separated by tens to hundreds of kilometres (Matabos and Thiebaut 2010; Bayer et al 2011; Marticorena et al 2020), that are ephemeral over timescales of decades to millennia in hydrothermal activity that supports local chemosynthesis (Kelly and Metaxas 2007)
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