Effect of mercury contamination on the hepatopancreas ultrastructure of Armadillo officinalis Duméril, 1816 (Crustacea, Isopoda).

Khemassia HAJER; Raja  JELASSI; C. GHEMARI; M.  RAIMOND; C. SOUTY-GROSSET; K NASRI-AMMAR

doi:10.71754/instm.bulletin.v46.209

Authors

Khemassia HAJER University of Tunis El Manar. Faculty of Sciences of Tunis. Laboratory of Diversity, Management and Conservation of Biological Systems.
Raja JELASSI Université de Tunis El Manar. Faculté des Sciences de Tunis
C. GHEMARI University of Tunis El Manar. Faculty of Sciences of Tunis. Laboratory of Diversity, Management and Conservation of Biological Systems
M. RAIMOND University of Poitiers, Laboratory of Ecology and Biology of Interactions (UMR CNRS 7267 EBI), Team Ecology Evolution Symbiosis, Poitiers
C. SOUTY-GROSSET University of Poitiers, Laboratory of Ecology and Biology of Interactions (UMR CNRS 7267 EBI), Team Ecology Evolution Symbiosis, Poitiers
K NASRI-AMMAR Université de Tunis El Manar. Faculté des Sciences de Tunis

DOI:

https://doi.org/10.71754/instm.bulletin.v46.209

Keywords:

Electron microscopy, Transmission, Hepatopancreas, Crustacean fisheries, Ultrastructure, Mercury, Marine, Armadillo officinalis

Abstract

This study aimed to evaluate the effect of substrate contamination by mercury on the hepatopancreasof the Crustacean species; Armadillo officinalis Duméril, 1816 . Uncontaminated specimens were collected from the banks of Ghar El Melh lagoon then exposed for three weeks to three concentrations of mercury salt solution. After the end of the exposure, the hepatopancreas unexposed and exposed animals were compared to detect histological changes. Transmission Electron Microscopy observations showed that the hepatopancreas of Hg-exposed animals showed morphological and histological changes compared with control animals even at the lowest concentration. the degree of these alterations was found to be dose-dependent. the global predominant features were: microvillus border disruption, condensation of some cytoplasm areas and of chromatin, rough endoplasmic reticulum and mitochondrial alterations, lipid droplets modifications in addition to the increasing number of B-granules in the B and S cells.