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Related Experiment Videos

Vestimentiferan on a whale fall

R A Feldman1, T M Shank, M B Black

  • 1Center for Theoretical and Applied Genetics, Cook College, Rutgers University, New Brunswick, New Jersey 08903-0231, USA. rfeldman@diversa.com

The Biological Bulletin
|May 30, 1998
PubMed
Summary
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Whale falls may facilitate marine species dispersal. Researchers found a vestimentiferan tubeworm, previously absent from whale falls, suggesting these sites support wider deep-sea ecosystem connections.

Area of Science:

  • Marine Biology
  • Deep-Sea Ecology
  • Chemosymbiosis

Background:

  • Whale falls support chemosynthetic communities, proposing them as dispersal stepping-stones between deep-sea vents and cold seeps.
  • The absence of vestimentiferan tubeworms from whale falls has challenged this hypothesis.
  • Vestimentiferans are key fauna in hydrothermal vent and cold seep ecosystems.

Purpose of the Study:

  • To investigate the presence of vestimentiferan tubeworms at whale falls.
  • To assess the implications for the whale fall stepping-stone hypothesis.
  • To characterize associated microbial endosymbionts.

Main Methods:

  • Morphological identification of tubeworms found on whale remains.
  • DNA sequencing of the mitochondrial cytochrome oxidase C subunit I (COI) gene for species identification.

Related Experiment Videos

  • Analysis of the 16S rRNA gene of bacterial endosymbionts.

    • Main Results:

    • First documented evidence of a vestimentiferan tubeworm (Escarpia spicata) associated with a whale fall.
    • The tubeworm's bacterial endosymbiont showed similarity to those from cold-seep vestimentiferans.
    • This finding addresses a major objection to the whale fall stepping-stone hypothesis.

    Conclusions:

    • Whale falls can host key species like vestimentiferan tubeworms, supporting their role in deep-sea dispersal.
    • The presence of specific endosymbionts suggests functional links between whale fall and seep ecosystems.
    • This discovery strengthens the whale fall hypothesis for connecting disparate chemosynthetic communities.