Total mercury concentrations in Steller sea lion bone: Variability among locations and elements.

Cortical bone Direct mercury analysis Mercury Steller sea lion Trabecular bone

Journal

Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231

Informations de publication

Date de publication:
15 May 2024
Historique:
received: 28 03 2024
revised: 03 05 2024
accepted: 04 05 2024
medline: 17 5 2024
pubmed: 17 5 2024
entrez: 16 5 2024
Statut: aheadofprint

Résumé

Mercury is a global contaminant that bioaccumulates in a tissue-specific manner in long-lived predators such as Steller sea lions (SSL). Bone is a well-preserved material amenable for studying millennial scale trends; however, little is known about the distribution and variability of total mercury concentrations ([THg]) within individual bones and among bone elements in SSL. We assessed SSL bone [THg] variability with respect to physiologic age, bone type, longitudinally within a bone, and among bone elements. Pup bones (mean ± SD; 31.4 ± 13.58 ppb) had greater [THg] than adults (7.9 ± 1.91 ppb). There were greater and more variable [THg] within individual long bones near epiphyses compared to mid-diaphysis. Pup spongy bone in ribs (62.7 ± 44.79 ppb) had greater [THg] than long bones (23.5 ± 8.83 ppb) and phalanges (19.6 ± 10.78 ppb). These differences are likely due to variability in bone composition, growth, and turnover rate. This study informs standardized sampling procedures for [THg] in bone to improve interpretations of mercury variability over time and space.

Identifiants

DOI: 10.1016/j.marpolbul.2024.116471 PMID: 38754323
pubmed: 38754323
pii: S0025-326X(24)00448-X
doi: 10.1016/j.marpolbul.2024.116471
pii:
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

116471

Informations de copyright

Copyright © 2024 Elsevier Ltd. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of competing interest Julie Avery reports financial support was provided by the National Science Foundation. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Auteurs

Mary Keenan (M)

Water and Environmental Research Center, Institute of Northern Engineering, University of Alaska, 1764 Tanana Loop, PO Box 75 5910, Fairbanks, AK 99775, USA; College of Fisheries and Ocean Sciences, University of Alaska, 2150 Koyukuk Drive, PO Box 757220, Fairbanks, AK 99775, USA. Electronic address: mpkeenan54@gmail.com.

Nicole Misarti (N)

Water and Environmental Research Center, Institute of Northern Engineering, University of Alaska, 1764 Tanana Loop, PO Box 75 5910, Fairbanks, AK 99775, USA.

Lara Horstmann (L)

College of Fisheries and Ocean Sciences, University of Alaska, 2150 Koyukuk Drive, PO Box 757220, Fairbanks, AK 99775, USA.

Stephanie G Crawford (SG)

Water and Environmental Research Center, Institute of Northern Engineering, University of Alaska, 1764 Tanana Loop, PO Box 75 5910, Fairbanks, AK 99775, USA.

Todd O'Hara (T)

Veterinary Integrative Biosciences, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, 402 Raymond Stotzer Pkwy, College Station, TX 77843, USA.

Lorrie D Rea (LD)

Water and Environmental Research Center, Institute of Northern Engineering, University of Alaska, 1764 Tanana Loop, PO Box 75 5910, Fairbanks, AK 99775, USA.

Julie P Avery (JP)

Water and Environmental Research Center, Institute of Northern Engineering, University of Alaska, 1764 Tanana Loop, PO Box 75 5910, Fairbanks, AK 99775, USA.

Classifications MeSH