Histology of Sculpin spp. in East Greenland. II. Histopathology and trace element concentrations
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Histology of Sculpin spp. in East Greenland. II. Histopathology and trace element concentrations. / Kaarsholm, Henrik M.; Verland, Ninna; Nørregaard, Rasmus D.; Bach, Lis; Søndergaard, Jens; Rigét, Frank F.; Dietz, Rune; Hansen, Martin; Eulaers, Igor; Desforges, Jean Pierre; Leifsson, Pall S.; Dang, Mai; Nowak, Barbara; Sonne, Christian.
I: Toxicological and Environmental Chemistry, Bind 100, Nr. 8-10, 2019, s. 769–784.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Histology of Sculpin spp. in East Greenland. II. Histopathology and trace element concentrations
AU - Kaarsholm, Henrik M.
AU - Verland, Ninna
AU - Nørregaard, Rasmus D.
AU - Bach, Lis
AU - Søndergaard, Jens
AU - Rigét, Frank F.
AU - Dietz, Rune
AU - Hansen, Martin
AU - Eulaers, Igor
AU - Desforges, Jean Pierre
AU - Leifsson, Pall S.
AU - Dang, Mai
AU - Nowak, Barbara
AU - Sonne, Christian
PY - 2019
Y1 - 2019
N2 - For many years, the sculpin has been utilized as a sentinel monitoring species for anthropogenic impacts on the marine environment. To further develop its potential as a screening model body burden of several trace elements, including cadmium (Cd), copper (Cu), mercury (Hg), lead (Pb) and selenium (Se), were investigated. In addition, histopathology in shorthorn sculpins (Myoxocephalus scorpius; n = 20) and fourhorn sculpins (Myoxocephalus quadricornis; n = 10) were examined at three sites around the Scoresby Sound settlement in Central East Greenland. Fourhorn sculpins caught at the most distant site from the settlement, contained significantly higher hepatic Cu and Cd concentrations as well as significantly elevated gill Pb levels compared to the shorthorn sculpins collected at two other sites closer to the settlement. Histological examinations showed that fish with significantly higher concentrations of hepatic Cd and Se exhibited greater nuclear alterations, interstitial hyperplasia/hypertrophy, interstitial mononuclear infiltrations and granulomas. Further, fish with higher Cd and Cu gill tissue levels displayed a significantly higher number of cytoplasmic alterations and lamellar epithelium lifting, hypertrophic and hyperplastic epithelium along with mucus cell hyperplasia. While the presence of liver lesions were not species or sex-specific, the presence of gill lesions decreased in the order female fourhorn sculpins > female shorthorn sculpins > male fourhorn sculpins > male shorthorn sculpins. Hepatic Hg concentrations exceeded known lowest observable effect doses (LOED) for fish (0.1–0.5 μg g −1 ww) in 27% of fish, while liver Cd residues in 80% exceeded LOED (0.42–1.8 μg g −1 ww). Based upon these results, data suggest that using the sculpin as a valuable sentinel fish species histopathology may serve as a reliable tool for assessing marine ecosystem exposure to trace metals. However, confounding physiological and ecological factors also need to be considered.
AB - For many years, the sculpin has been utilized as a sentinel monitoring species for anthropogenic impacts on the marine environment. To further develop its potential as a screening model body burden of several trace elements, including cadmium (Cd), copper (Cu), mercury (Hg), lead (Pb) and selenium (Se), were investigated. In addition, histopathology in shorthorn sculpins (Myoxocephalus scorpius; n = 20) and fourhorn sculpins (Myoxocephalus quadricornis; n = 10) were examined at three sites around the Scoresby Sound settlement in Central East Greenland. Fourhorn sculpins caught at the most distant site from the settlement, contained significantly higher hepatic Cu and Cd concentrations as well as significantly elevated gill Pb levels compared to the shorthorn sculpins collected at two other sites closer to the settlement. Histological examinations showed that fish with significantly higher concentrations of hepatic Cd and Se exhibited greater nuclear alterations, interstitial hyperplasia/hypertrophy, interstitial mononuclear infiltrations and granulomas. Further, fish with higher Cd and Cu gill tissue levels displayed a significantly higher number of cytoplasmic alterations and lamellar epithelium lifting, hypertrophic and hyperplastic epithelium along with mucus cell hyperplasia. While the presence of liver lesions were not species or sex-specific, the presence of gill lesions decreased in the order female fourhorn sculpins > female shorthorn sculpins > male fourhorn sculpins > male shorthorn sculpins. Hepatic Hg concentrations exceeded known lowest observable effect doses (LOED) for fish (0.1–0.5 μg g −1 ww) in 27% of fish, while liver Cd residues in 80% exceeded LOED (0.42–1.8 μg g −1 ww). Based upon these results, data suggest that using the sculpin as a valuable sentinel fish species histopathology may serve as a reliable tool for assessing marine ecosystem exposure to trace metals. However, confounding physiological and ecological factors also need to be considered.
KW - Arctic
KW - Environmental monitoring
KW - gills
KW - liver
KW - metals
KW - selenium
U2 - 10.1080/02772248.2019.1579992
DO - 10.1080/02772248.2019.1579992
M3 - Journal article
AN - SCOPUS:85062514432
VL - 100
SP - 769
EP - 784
JO - Toxicological and Environmental Chemistry
JF - Toxicological and Environmental Chemistry
SN - 0277-2248
IS - 8-10
ER -
ID: 217112227