The first report of luminescent liver tissue in fishes: Evolution and structure of bioluminescent organs in the deep-sea naked barracudinas (Aulopiformes: Lestidiidae)

Michael J. Ghedotti, Ryan W. Barton, Andrew M Simons, Matthew P. Davis

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Bioluminescent organs that provide ventral camouflage are common among fishes in the meso-bathypelagic zones of the deep sea. However, the anatomical structures that have been modified to produce light vary substantially among different groups of fishes. Although the anatomical structure and evolutionary derivation of some of these organs have been well studied, the light organs of the naked barracudinas have received little scientific attention. This study describes the anatomy and evolution of bioluminescent organs in the Lestidiidae (naked barracudinas) in the context of a new phylogeny of barracudinas and closely related alepisauroid fishes. Gross and histological examination of bioluminescent organs or homologous structures from preserved museum specimens indicate that the ventral light organ is derived from hepatopancreatic tissue and that the antorbital spot in Lestrolepis is, in fact, a second dermal light organ. In the context of the phylogeny generated from DNA-sequence data from eight gene fragments (7 nuclear and 1 mitochondrial), a complex liver with a narrow ventral strand running along the ventral midline evolves first in the Lestidiidae. The ventral hepatopancreatic tissue later evolves into a ventral bioluminescent organ in the ancestor of Lestidium and Lestrolepis with the lineage leading to the genus Lestrolepis evolving a dermal antorbital bioluminescent organ, likely for light-intensity matching. This is the first described hepatopancreatic bioluminescent organ in fishes. J. Morphol. 276:310-318, 2015.

Original languageEnglish (US)
Pages (from-to)310-318
Number of pages9
JournalJournal of Morphology
Volume276
Issue number3
DOIs
StatePublished - Mar 1 2015

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Aulopiformes
Oceans and Seas
Fishes
Light
liver
Liver
fish
Phylogeny
phylogeny
Museums
Skin
light intensity
ancestry
Running
Anatomy
nucleotide sequences
tissues
genes
Genes

Keywords

  • Aulopiformes
  • Bioluminescence
  • Deep sea
  • Hepatopancreas
  • Histology
  • Lestrolepis

Cite this

The first report of luminescent liver tissue in fishes : Evolution and structure of bioluminescent organs in the deep-sea naked barracudinas (Aulopiformes: Lestidiidae). / Ghedotti, Michael J.; Barton, Ryan W.; Simons, Andrew M; Davis, Matthew P.

In: Journal of Morphology, Vol. 276, No. 3, 01.03.2015, p. 310-318.

Research output: Contribution to journalArticle

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