Copepoda from deep-sea hydrothermal vents at the East Pacific Rise

Abstract

During the Hydronaut cruise in 1987 at the East Pacific Rise, between 12 degree 45'N and 12 degree 50'N in a depth of 2,630 m, 18 species of copepods (Poecilostomatoida and Siphonostomatoida) were collected. These include 3 new siphonostomatoids: Cheramomyzon abyssale n. gen., n. sp., Aphotopontius hydronauticus n. sp., and Benthoxynus tumidiseta n. sp., and 15 species already known from other regions: Oncaea praeclara, Aphotopontius arcuatus, A. mammillatus, Ceuthoecetes aliger, C. cristatus, Exrima dolichopus, Nilva torifera , Rhogobius contractus, Scotoecetes introrsus, Stygiopontius appositus, S. cinctiger, S. hispidulus, S. sentifer, S. stabilitus , and Ecbathyrion prolixicauda