Melanization of the alimentary tract in lizardfishes (Teleostei, Aulopiformes, Synodontidae)

Lev Fishelson*, Daniel Golani, Barry Russell, Bella Galil, Menachem Goren

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Investigating the alimentary tract in several species of lizardfishes (Synodontidae, Teleostei) of the genera Saurida, Synodus and Trachinocephalus, from various sites of their distribution, revealed melanization of the tract wall. This phenomenon was observed in several species of the genus Saurida, but not in the other two genera. This melanization is caused by layers of melanosomes rich in melanin granules and deposited within the connective tissue of the submucosa, between the muscular wall and the muscularis submucosa. From this site this black submucosa extends into the folds of the mucosa. In S. tumbil and S. filamentosa, the entire alimentary tract is black, whereas in S. macrolepis only the stomach is partially or entirely black. This phenomenon and its possible importance are discussed.

Original languageEnglish
Pages (from-to)195-200
Number of pages6
JournalEnvironmental Biology of Fishes
Volume95
Issue number2
DOIs
StatePublished - Sep 2012

Keywords

  • Alimentary tract
  • Lizardfishes
  • Saurida
  • Submucosal melanization

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