Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis)

Swimming behaviour was investigated in adult egg-carrying northern shrimp (Pandalus borealis) exposed to dilute concentrations of the pesticides Alpha Max® (active ingredient deltamethrin) and Salmosan® (active ingredient azamethiphos) used to control parasitic copepods in salmon aquaculture. These...

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Published in:Aquatic Toxicology
Main Authors: Bamber, Shaw, Rundberget, Thomas, Kringstad, Alfhild, Bechmann, Renée Katrin
Format: Article in Journal/Newspaper
Language:English
Published: 2021
Subjects:
Online Access:https://hdl.handle.net/11250/2799843
https://doi.org/10.1016/j.aquatox.2021.105966
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spelling ftnorce:oai:norceresearch.brage.unit.no:11250/2799843 2023-05-15T17:43:56+02:00 Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis) Bamber, Shaw Rundberget, Thomas Kringstad, Alfhild Bechmann, Renée Katrin 2021 application/pdf https://hdl.handle.net/11250/2799843 https://doi.org/10.1016/j.aquatox.2021.105966 eng eng Norges forskningsråd: 267746 Aquatic Toxicology. 2021, 240 . urn:issn:0166-445X https://hdl.handle.net/11250/2799843 https://doi.org/10.1016/j.aquatox.2021.105966 cristin:1943656 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021, The Authors CC-BY Aquatic Toxicology 240 9 Peer reviewed Journal article 2021 ftnorce https://doi.org/10.1016/j.aquatox.2021.105966 2022-10-13T05:50:15Z Swimming behaviour was investigated in adult egg-carrying northern shrimp (Pandalus borealis) exposed to dilute concentrations of the pesticides Alpha Max® (active ingredient deltamethrin) and Salmosan® (active ingredient azamethiphos) used to control parasitic copepods in salmon aquaculture. These treatments are applied topically within fish nets or well boats. Following a short treatment period, the pesticides are directly discharged to sea, exposing non-target organisms such as P. borealis to diluted concentrations of these chemicals. Locomotor activity was measured continuously in individual shrimp over several days within which they were exposed to treatments of diluted AlphaMax® or Salmosan®. Dilutions were based on modelling and dispersion studies from the literature and were considered environmentally realistic for greater than 1 km from point of discharge. 24 h continuous flow treatments were delivered within a 3.5-day monitoring period to observe the timeline of events following the release of treatment water, addressing questions of temporal responses in locomotor activity, recognising key time points of significant events and assessing the survival capacity of the shrimp. Exposure of shrimp to 1 ng l−1 deltamethrin triggered an immediate increase in swimming activity which reduced in intensity over the following 22 h leaving all shrimp either moribund or dead. A further exposure trial exposing shrimp to 0.2 ng l−1 deltamethrin (nominal) showed an increase in activity at the start of exposure that continued throughout the 24 h delivery, returning to previous levels by the end of the 3.5-day monitoring period. All these shrimps survived for at least four weeks after exposure, putting the threshold concentration of deltamethrin leading to immobility or death in adult P. borealis within this study at greater than 0.2 ng l−1 (nominal) and less than 1 ng l − 1 (measured). Exposure of P. borealis to azamethiphos at 30 ng l−1 induced several periods of significantly increased activity within the first 10 h ... Article in Journal/Newspaper northern shrimp Pandalus borealis Copepods NORCE vitenarkiv (Norwegian Research Centre) Aquatic Toxicology 240 105966
institution Open Polar
collection NORCE vitenarkiv (Norwegian Research Centre)
op_collection_id ftnorce
language English
description Swimming behaviour was investigated in adult egg-carrying northern shrimp (Pandalus borealis) exposed to dilute concentrations of the pesticides Alpha Max® (active ingredient deltamethrin) and Salmosan® (active ingredient azamethiphos) used to control parasitic copepods in salmon aquaculture. These treatments are applied topically within fish nets or well boats. Following a short treatment period, the pesticides are directly discharged to sea, exposing non-target organisms such as P. borealis to diluted concentrations of these chemicals. Locomotor activity was measured continuously in individual shrimp over several days within which they were exposed to treatments of diluted AlphaMax® or Salmosan®. Dilutions were based on modelling and dispersion studies from the literature and were considered environmentally realistic for greater than 1 km from point of discharge. 24 h continuous flow treatments were delivered within a 3.5-day monitoring period to observe the timeline of events following the release of treatment water, addressing questions of temporal responses in locomotor activity, recognising key time points of significant events and assessing the survival capacity of the shrimp. Exposure of shrimp to 1 ng l−1 deltamethrin triggered an immediate increase in swimming activity which reduced in intensity over the following 22 h leaving all shrimp either moribund or dead. A further exposure trial exposing shrimp to 0.2 ng l−1 deltamethrin (nominal) showed an increase in activity at the start of exposure that continued throughout the 24 h delivery, returning to previous levels by the end of the 3.5-day monitoring period. All these shrimps survived for at least four weeks after exposure, putting the threshold concentration of deltamethrin leading to immobility or death in adult P. borealis within this study at greater than 0.2 ng l−1 (nominal) and less than 1 ng l − 1 (measured). Exposure of P. borealis to azamethiphos at 30 ng l−1 induced several periods of significantly increased activity within the first 10 h ...
format Article in Journal/Newspaper
author Bamber, Shaw
Rundberget, Thomas
Kringstad, Alfhild
Bechmann, Renée Katrin
spellingShingle Bamber, Shaw
Rundberget, Thomas
Kringstad, Alfhild
Bechmann, Renée Katrin
Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis)
author_facet Bamber, Shaw
Rundberget, Thomas
Kringstad, Alfhild
Bechmann, Renée Katrin
author_sort Bamber, Shaw
title Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis)
title_short Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis)
title_full Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis)
title_fullStr Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis)
title_full_unstemmed Effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult Northern shrimp (Pandalus borealis)
title_sort effects of simulated environmental discharges of the salmon lice pesticides deltamethrin and azamethiphos on the swimming behaviour and survival of adult northern shrimp (pandalus borealis)
publishDate 2021
url https://hdl.handle.net/11250/2799843
https://doi.org/10.1016/j.aquatox.2021.105966
genre northern shrimp
Pandalus borealis
Copepods
genre_facet northern shrimp
Pandalus borealis
Copepods
op_source Aquatic Toxicology
240
9
op_relation Norges forskningsråd: 267746
Aquatic Toxicology. 2021, 240 .
urn:issn:0166-445X
https://hdl.handle.net/11250/2799843
https://doi.org/10.1016/j.aquatox.2021.105966
cristin:1943656
op_rights Navngivelse 4.0 Internasjonal
http://creativecommons.org/licenses/by/4.0/deed.no
© 2021, The Authors
op_rightsnorm CC-BY
op_doi https://doi.org/10.1016/j.aquatox.2021.105966
container_title Aquatic Toxicology
container_volume 240
container_start_page 105966
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