Do some deep‐sea, sediment‐dwelling species of harpacticoid copepods have 1000‐km‐scale range sizes?

Authors

Erin E. Easton, The University of Texas Rio Grande ValleyFollow
David Thistle

Document Type

Article

Publication Date

6-30-2016

Abstract

The range sizes of sediment‐dwelling deep‐sea species are largely unknown. Such knowledge is important because a deep sea composed in large part of species with 100‐km‐scale ranges would be very different from one composed predominantly of species with 1000‐km‐scale ranges. For example, the total species richness would be much greater in the first case than in the second. As a step towards the determination of the distribution of species’ range sizes in the deep sea, we asked whether harpacticoid copepods (Crustacea) on the continental rise in the northeastern Pacific had 1000‐km‐scale range sizes. We chose harpacticoids because they occur widely in deep‐sea sediments and thus are a typical deep‐sea taxon. In addition, they have no pelagic stage in their life history, so they allow a conservative test of hypotheses about species’ range sizes. We used morphology and gene‐sequence data to assign individuals to species. At least 13.3% of the species we studied had 1000‐km‐scale ranges, raising the question of how these species maintain genetic continuity.

Comments

© 2016 John Wiley & Sons Ltd. Original published version available at https://doi.org/10.1111/mec.13744

Recommended Citation

Easton, E. E., Thistle, D. 2016. Do some deep-sea, sediment-dwelling species of harpacticoid copepods have 1,000-km-scale range sizes? Molecular Ecology 25, 4301-4318. https://doi.org/10.1111/mec.13744

Publication Title

Molecular Ecology

DOI

10.1111/mec.13744