The cellular origin of bioluminescence in the colonial hydroid Obelia.

1. Obelia geniculata luminescent sites were examined using image intensifier autophotography and fluorescence microscopy techniques.2. Autophotography and superimposed fluorescence showed that luminescence emanates from discrete spots located within the pedicels, uprights and stolons of the colonies. The green fluorescent sites correspond to luminescent sites.3. The size of the spots averages about 10 to 20 µ. They are considered to be cells and are termed photocytes.4. The photocytes are concentrated distally in an upright, are more abundant in pedicels and nodes than in the internodes, and are most abundant in actively growing regions.5. The photocytes are located in the endoderm against the mesoglea, and they have cytoplasmic projections up to 20 µ long; one of these projections usually extends to the coelenteron.

• Publication year

  1974

• Venue

  The Biological Bulletin

• Publication date

  1974-10-01

• Fields of study

  Biology, Medicine

• Identifiers
  DOI 10.2307/1540457PMID 4155320
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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