Histological Alterations in the Body Wall of the Tropical Earthworm Eudrilus eugeniae Exposed to Hexavalent Chromium.
作者： V. K. Fernando , I. C. Perera , C. D. Dangalle , S. Premawansa , M. R. Wijesinghe
DOI: 10.1007/S00128-015-1480-1
关键词: Pyknosis 、 Hexavalent chromium 、 Veterinary medicine 、 Eudrilus eugeniae 、 Toxicity 、 Toxicology 、 Histology 、 Earthworm 、 Sloughing 、 Chemistry 、 Ecotoxicology
摘要: The tropical earthworm Eudrilus eugeniae was chronically exposed to hexavalent chromium (Cr) in its substrate over a concentration range from 0.24 893 mg kg−1. Histological alterations the body wall epithelium included cell fusion, reduction thickness of epithelial layer, marked increase pyknotic nuclei and sloughing. Similar changes were noted circular longitudinal muscles with damage being indicated by prominent inter-muscular spaces disintegration. Many these intensified increasing levels exposure. It is significant that some recorded here evident even at lowest 0.24 mg kg−1, an environmentally relevant concentration. Hence, observed trends could be taken as early warning imminent threats heavy metal pollution epigeic species.
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