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Michishita S, Gibble C, Tubbs C, Felton R, Gjeltema J, Lang J, Finkelstein M. Microplastic in northern anchovies (Engraulis mordax) and common murres (Uria aalge) from the Monterey Bay, California USA - Insights into prevalence, composition, and estrogenic activity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120548. [PMID: 36336179 DOI: 10.1016/j.envpol.2022.120548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 10/08/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Microplastic (particle size <5 mm) is considered an emerging threat to the marine environment, yet data are limited for coastal ecosystems. To provide information related to microplastic in a coastal system, we used alkaline tissue digestion and Raman spectroscopy to quantify the prevalence and composition (e.g. fiber, fragment, foam, etc.) of anthropogenic microparticles in the digestive tracts of northern anchovies (Engraulis mordax, anchovy, n = 24), and common murres (Uria aalge, murre, n = 19) from the Monterey Bay, California USA. We also determined microplastic prevalence and composition in seawater (n = 12 17-h sampling periods representing ∼46,000 L sampled) from two Monterey Bay intake systems (Moss Landing, CA and Santa Cruz, CA USA). Microparticles recovered from murre digestive tracts were assessed for estrogenic activity using an in-vitro estrogen receptor activation assay. Suspected anthropogenic microparticles based on visual characteristics were recovered from all sample types with ∼2 particles per 1000 L from the seawater sampling periods, 58% prevalence in anchovies, and 100% prevalence in murres. Across samples of seawater, anchovies, and murres, the most abundant microparticle type found were fibers (78%), followed by fragments (13%), foam (6%), film (2%), and beads (1%). Raman spectroscopy identified 57% of microparticles (excluding dye-prominent and unknown) as plastic (synthetic, semi-synthetic, or blends). Almost one quarter (23%) of the murre digestive tracts contained microparticles that exhibited estrogenic activity. Our study describes the widespread occurrence, composition, and potential estrogenic activity of microplastic in the Monterey Bay and provides important information to aid in the understanding of microplastic contamination in coastal systems.
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Affiliation(s)
- Sami Michishita
- Department of Microbiology and Environmental Toxicology, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA, 95064, USA
| | - Corinne Gibble
- California Department of Fish and Wildlife, Office of Spill Prevention and Response, Marine Wildlife Veterinary Care and Research Center, 151 McAllister Way, Santa Cruz, CA, 95060, USA
| | - Christopher Tubbs
- Conservation Science Wildlife Health, San Diego Zoo Wildlife Alliance, 15600 San Pasqual Valley Road, Escondido, CA, 92027, USA
| | - Rachel Felton
- Conservation Science Wildlife Health, San Diego Zoo Wildlife Alliance, 15600 San Pasqual Valley Road, Escondido, CA, 92027, USA
| | - Jenessa Gjeltema
- Department of Medicine and Epidemiology and the Karen C. Drayer Wildlife Health Center, University of California Davis School of Veterinary Medicine, One Shields Drive, Davis, CA, 95616, USA
| | - Jackelyn Lang
- Department of Medicine and Epidemiology and the Karen C. Drayer Wildlife Health Center, University of California Davis School of Veterinary Medicine, One Shields Drive, Davis, CA, 95616, USA
| | - Myra Finkelstein
- Department of Microbiology and Environmental Toxicology, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA, 95064, USA.
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Bisesi JH, Martyniuk CJ. Virtual Special Issue of the Fifth Biennial Meeting of the North American Society for Comparative Endocrinology (Sociedad Norteamericana de Endocrinología Comparada; Societé Nord-Americaine d'Endocrinologie Comparée). Gen Comp Endocrinol 2021; 308:113770. [PMID: 33819475 DOI: 10.1016/j.ygcen.2021.113770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Joseph H Bisesi
- Department of Environmental and Global Health, University of Florida, Gainesville, FL, USA; Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, USA
| | - Christopher J Martyniuk
- Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, USA; Department of Physiological Sciences, University of Florida, Gainesville, FL, USA.
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