The last stage in the life history of the European conger eel Conger conger: a transformation before death

J Fish Biol. 2020 Feb;96(2):533-538. doi: 10.1111/jfb.14223. Epub 2019 Dec 15.

Abstract

The taxonomic, morphological and meristic features of a dark eel caught by commercial trawling off the Gulf of Patti, southern Tyrrhenian Sea, Mediterranean Sea, February 17, 2017, showed it to be a female Conger conger. Histological analysis of gonads demonstrated that the individual was in a post-spawning phase. X-ray radiographs showed widespread decalcification of skeleton and teeth loss, confirming a strong mobilisation of somatic energy reserves needed for reproductive development.

Keywords: Anguilliformes; Congridae; Mediterranean Sea; morphology; reproduction.

MeSH terms

  • Animals
  • Calcification, Physiologic
  • Eels / physiology*
  • Female
  • Mediterranean Sea
  • Reproduction / physiology