Vertical distribution correlates with pressure tolerances of early embryos in the deep-sea asteroid Plutonaster bifrons

C M Young, P A Tyler, John D Gage

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The astropectinid asteroid Plutonaster bifrons (Wyville Thomson) occurs on the continental slope of the north-east Atlantic between 1000 and 2500 m depths. As in most deep-sea animals, the factors limiting bathymetric distribution of this species are unknown. Eggs were fertilized in vitro and incubated through the early embryonic cleavage stages at pressures that correspond to depths from 0 to 3000 m. The highest percentage of normal development occurred near the peak of the species distribution (2000 m), and virtually no normal development occurred at a pressure corresponding to 3000 m depth. Developmental rate was retarded at pressures higher and lower than those found near 2000 m. These experiments indicate that embryonic pressure tolerances could determine both the upper and lower bathymetric limits of distribution for this species.
Original languageEnglish
Pages (from-to)749-757
Number of pages9
JournalJ MAR BIOL ASSOC UK
Volume76
Issue number3
Publication statusPublished - 1996

Keywords

  • ZONATION
  • DEPTH
  • MAINTENANCE
  • Marine & Freshwater Biology

Fingerprint Dive into the research topics of 'Vertical distribution correlates with pressure tolerances of early embryos in the deep-sea asteroid Plutonaster bifrons'. Together they form a unique fingerprint.

  • Cite this