Contrasting life-history traits of two sympatric smooth-hound species: implication for vulnerability

J Fish Biol. 2020 Mar;96(3):853-857. doi: 10.1111/jfb.14262. Epub 2020 Feb 9.

Abstract

In this study, life-history traits (maximum and average size, size at maturity and fecundity) of two congeneric smooth-hounds, Mustelus mustelus and Mustelus punctulatus, which share a geographical distribution and experience a similar fishing exploitation, were estimated and compared between species. The results indicated a lower maximum and average size, a lower size at maturity and a higher fecundity in M. punctulatus compared with those in M. mustelus. Considering that these two species co-occur in the same areas and are caught by the same fishing gears, the results indicate a higher vulnerability to exploitation of M. mustelus compared with that of M. punctulatus.

Keywords: Mustelus mustelus; Mustelus punctulatus; Adriatic Sea; life history; shark; vulnerability.

MeSH terms

  • Animals
  • Body Size
  • Elasmobranchii / anatomy & histology
  • Elasmobranchii / physiology*
  • Fertility
  • Life History Traits*
  • Sympatry / physiology*