Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua
Microplastics (MPs) have become a global issue as they are omnipresent in the ocean. Fish ingesting MPs through feed could be affected in their physiological function, e.g., disrupted enzyme production and function, reduction of feeding and reproductive failure. This study assessed the effects of fe...
Published in: | Environmental Pollution |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://pure.au.dk/portal/en/publications/b1623dcd-9f26-47fd-bb7b-a5384601f2c4 https://doi.org/10.1016/j.envpol.2023.121053 http://www.scopus.com/inward/record.url?scp=85146176801&partnerID=8YFLogxK |
id |
ftuniaarhuspubl:oai:pure.atira.dk:publications/b1623dcd-9f26-47fd-bb7b-a5384601f2c4 |
---|---|
record_format |
openpolar |
spelling |
ftuniaarhuspubl:oai:pure.atira.dk:publications/b1623dcd-9f26-47fd-bb7b-a5384601f2c4 2024-02-11T10:01:56+01:00 Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua Fernández-Míguez, M. Puvanendran, V. Burgerhout, E. Presa, P. Tveiten, H. Vorkamp, K. Hansen, J. Johansson, G. S. Bogevik, A. S. 2023-03 https://pure.au.dk/portal/en/publications/b1623dcd-9f26-47fd-bb7b-a5384601f2c4 https://doi.org/10.1016/j.envpol.2023.121053 http://www.scopus.com/inward/record.url?scp=85146176801&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/en/publications/b1623dcd-9f26-47fd-bb7b-a5384601f2c4 info:eu-repo/semantics/openAccess Fernández-Míguez , M , Puvanendran , V , Burgerhout , E , Presa , P , Tveiten , H , Vorkamp , K , Hansen , J , Johansson , G S & Bogevik , A S 2023 , ' Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua ' , Environmental Pollution , vol. 320 , 121053 . https://doi.org/10.1016/j.envpol.2023.121053 Atlantic cod Egg quality Gadus morhua Gene expression Microplastics qPCR article 2023 ftuniaarhuspubl https://doi.org/10.1016/j.envpol.2023.121053 2024-01-25T00:00:21Z Microplastics (MPs) have become a global issue as they are omnipresent in the ocean. Fish ingesting MPs through feed could be affected in their physiological function, e.g., disrupted enzyme production and function, reduction of feeding and reproductive failure. This study assessed the effects of feed containing naturally weathered MPs from the Oslofjord (Norway) on the reproductive physiology of Atlantic cod (Gadus morhua). Farmed cod broodstock were fed either control (C-diet) or feeds containing 1% microplastic (MP-diet) starting nine months prior to spawning, from June until May. No major differences were found between diet groups in overall biometrics or gonad histology. Sex steroid levels (testosterone, 11-ketotestosterone and 17β-estradiol) resulted in expected profiles increasing over time without any significant differences between treatments. Gene expression levels of the steroidogenic enzyme 20β-hydroxysteroid dehydrogenase (20β-hsd) and vitellogenin1 (vtg1) showed significant differences between dietary treatments with lower expression in the control group. This can be a direct effect of MPs, but endocrine disrupting effects of potentially leachable plastic additives cannot be completely ruled out. Thus, these enzymes could be indicators of exposure to contaminants that disrupt sexual maturation by affecting the production of primarily maturation-inducing steroid. Although the concentration of MPs employed in this study may not be high enough to elicit any observable short-term biological effects, the observed gene expression suggests that long-term consequences should be considered caused by an expected increase of MPs in marine environments. Article in Journal/Newspaper atlantic cod Gadus morhua Aarhus University: Research Norway Environmental Pollution 320 121053 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Atlantic cod Egg quality Gadus morhua Gene expression Microplastics qPCR |
spellingShingle |
Atlantic cod Egg quality Gadus morhua Gene expression Microplastics qPCR Fernández-Míguez, M. Puvanendran, V. Burgerhout, E. Presa, P. Tveiten, H. Vorkamp, K. Hansen, J. Johansson, G. S. Bogevik, A. S. Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua |
topic_facet |
Atlantic cod Egg quality Gadus morhua Gene expression Microplastics qPCR |
description |
Microplastics (MPs) have become a global issue as they are omnipresent in the ocean. Fish ingesting MPs through feed could be affected in their physiological function, e.g., disrupted enzyme production and function, reduction of feeding and reproductive failure. This study assessed the effects of feed containing naturally weathered MPs from the Oslofjord (Norway) on the reproductive physiology of Atlantic cod (Gadus morhua). Farmed cod broodstock were fed either control (C-diet) or feeds containing 1% microplastic (MP-diet) starting nine months prior to spawning, from June until May. No major differences were found between diet groups in overall biometrics or gonad histology. Sex steroid levels (testosterone, 11-ketotestosterone and 17β-estradiol) resulted in expected profiles increasing over time without any significant differences between treatments. Gene expression levels of the steroidogenic enzyme 20β-hydroxysteroid dehydrogenase (20β-hsd) and vitellogenin1 (vtg1) showed significant differences between dietary treatments with lower expression in the control group. This can be a direct effect of MPs, but endocrine disrupting effects of potentially leachable plastic additives cannot be completely ruled out. Thus, these enzymes could be indicators of exposure to contaminants that disrupt sexual maturation by affecting the production of primarily maturation-inducing steroid. Although the concentration of MPs employed in this study may not be high enough to elicit any observable short-term biological effects, the observed gene expression suggests that long-term consequences should be considered caused by an expected increase of MPs in marine environments. |
format |
Article in Journal/Newspaper |
author |
Fernández-Míguez, M. Puvanendran, V. Burgerhout, E. Presa, P. Tveiten, H. Vorkamp, K. Hansen, J. Johansson, G. S. Bogevik, A. S. |
author_facet |
Fernández-Míguez, M. Puvanendran, V. Burgerhout, E. Presa, P. Tveiten, H. Vorkamp, K. Hansen, J. Johansson, G. S. Bogevik, A. S. |
author_sort |
Fernández-Míguez, M. |
title |
Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua |
title_short |
Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua |
title_full |
Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua |
title_fullStr |
Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua |
title_full_unstemmed |
Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua |
title_sort |
effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock atlantic cod gadus morhua |
publishDate |
2023 |
url |
https://pure.au.dk/portal/en/publications/b1623dcd-9f26-47fd-bb7b-a5384601f2c4 https://doi.org/10.1016/j.envpol.2023.121053 http://www.scopus.com/inward/record.url?scp=85146176801&partnerID=8YFLogxK |
geographic |
Norway |
geographic_facet |
Norway |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Fernández-Míguez , M , Puvanendran , V , Burgerhout , E , Presa , P , Tveiten , H , Vorkamp , K , Hansen , J , Johansson , G S & Bogevik , A S 2023 , ' Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua ' , Environmental Pollution , vol. 320 , 121053 . https://doi.org/10.1016/j.envpol.2023.121053 |
op_relation |
https://pure.au.dk/portal/en/publications/b1623dcd-9f26-47fd-bb7b-a5384601f2c4 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.envpol.2023.121053 |
container_title |
Environmental Pollution |
container_volume |
320 |
container_start_page |
121053 |
_version_ |
1790597829936283648 |