Histopathological baseline levels and confounding factors in common sole (Solea solea) for marine environmental risk assessment

N. Cuevas, I. Zorita, P.M. Costa, J. Larreta, J. Franco

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Liver and gonad histopathology, biometric parameters and hepatic metal bioaccumulation were assessed monthly over a one-year period in common soles from the Basque continental shelf, in order to determine baseline levels and confounding factors within biomonitoring studies. Biometric parameters and hepatic metal bioaccumulation varied according to season and gender. Accordingly, hepatic histopathological traits presented seasonal variations related to the reproductive cycle. However, the hepatic histopathological index showed that seasonality and gender were not significant confounding factors. Conversely, the gonad histopathological index was modulated by season and gender. As for organ comparison, the liver endured more severe histopathological damage than the gonad. In brief, the sampling period and gender may not affect the estimation of hepatic histopathological indices for biomonitoring purposes. Nonetheless, due to different sensitivities to environmental 'noise' variables, the sampling period and gender differentiation should be thoroughly considered for the assessment of gonad histopathology, biometrics and metal bioaccumulation.

Original languageEnglish
Pages (from-to)162-173
Number of pages12
JournalMarine Environmental Research
Volume110
DOIs
Publication statusPublished - 1 Sep 2015

Keywords

  • Basque continental shelf
  • Flatfish
  • Histopathology
  • Metal bioaccumulation
  • Reference values
  • Seasonality

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