Temporal Baseline of Essesntial and Non-essential Elements Recorded in Baleen of Western Arctic Bowhead Whale (Balaena mysticetus).

Autor: Shore SL; Department of Marine and Environmental Sciences, Halmos College of Arts and Sciences, Environmental Conservation through Leading-Edge Research (SECLER), Nova Southeastern University, 8000 North Ocean Drive, Dania Beach, FL, 33004, USA., Giarikos DG; Department of Chemistry and Physics, Halmos College of Arts and Sciences, Nova Southeastern University, 3301 College Avenue, Fort Lauderdale, FL, 33314, USA., Duffy LK; Department of Chemistry & Biochemistry, University of Alaska Fairbanks, 1930 Yukon Drive Rm. 194, Fairbanks, AK, 99775, USA., Edwards MR; Department of Marine and Environmental Sciences, Halmos College of Arts and Sciences, Environmental Conservation through Leading-Edge Research (SECLER), Nova Southeastern University, 8000 North Ocean Drive, Dania Beach, FL, 33004, USA., Hirons AC; Department of Marine and Environmental Sciences, Halmos College of Arts and Sciences, Environmental Conservation through Leading-Edge Research (SECLER), Nova Southeastern University, 8000 North Ocean Drive, Dania Beach, FL, 33004, USA. hirons@nova.edu.
Jazyk: angličtina
Zdroj: Bulletin of environmental contamination and toxicology [Bull Environ Contam Toxicol] 2022 Apr; Vol. 108 (4), pp. 641-645. Date of Electronic Publication: 2021 Nov 12.
DOI: 10.1007/s00128-021-03394-2
Abstrakt: This study established the first baseline of changing elemental concentrations in bowhead whale baleen over time (1958-1999). From previously published stable isotope data, year, season (summer or winter), and location (Beaufort or Bering/Chukchi seas) were attributed to each sample. Thirteen elements (Al, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, V, Zn) in baleen from nine subsistence-harvested bowhead whales (n = 138) were detected. Al, Cu, and Fe were the highest concentrations while Cd and V were among the lowest. Our data supports absorption as the main route of exposure to environmental elements rather than biomagnification due to bowhead whales' low trophic position. A linear mixed-effects model confirmed most elements' concentrations increased with time, while location and sex were insignificant explanatory factors. These temporal fluctuations were most likely a product of environmental changes due to a warming climate and human activities.
(© 2021. The Author(s).)
Databáze: MEDLINE
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