Endocrine and reproductive endpoints of Notothenia rossii and N. coriiceps: A baseline study for ecotoxicological monitoring in Antarctic waters

María Florencia Ferreira, Fabiana Lo Nostro, Renato Honji, Martin Ansaldo, Griselda Genovese*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Pollution threats Antarctica and scientists blame xenobiotics and anthropic activities. Yet little is known about their effect on Antarctic ichthyofauna. Accordingly, we investigated the endocrine system of male fish Notothenia rossii and N. coriiceps (Perciformes, Nototheniidae) collected during Austral summer. For N. rossii, hormone levels of estradiol, testosterone, and 11-ketotestosterone were higher in fish collected during March than those of January; whereas for N. coriiceps estradiol and androgens levels were higher and lower in March, respectively. Histological analysis of the testes showed an unrestricted lobular type with no pathological alterations. However, detection of vitellogenin-like in plasma and skin mucus were seen in 75% of N. coriiceps males and 7% of N. rossii males. This is the first report of mucus vitellogenin-like detection as a non-invasive biomarker of endocrine disruption in notothenioid males and settles a baseline for future studies of reproductive biology and endocrine disruption in Antarctic fishes.

Original languageEnglish
Pages (from-to)418-428
Number of pages11
JournalMarine Pollution Bulletin
Volume145
DOIs
Publication statusPublished - Aug 2019
Externally publishedYes

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

Keywords

  • Antarctica
  • EDCs
  • Lobular testes
  • Mucus
  • Notothenia
  • Sex steroids
  • Vitellogenin-like

Fingerprint

Dive into the research topics of 'Endocrine and reproductive endpoints of Notothenia rossii and N. coriiceps: A baseline study for ecotoxicological monitoring in Antarctic waters'. Together they form a unique fingerprint.

Cite this