A modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.

In the western United States, pesticides used in agricultural and urban areas are often detected in streams and rivers that support threatened and endangered Pacific salmon. Although concentrations are rarely high enough to cause direct salmon mortality, they can reach levels sufficient to impair ju...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kate H Macneale, Julann A Spromberg, David H Baldwin, Nathaniel L Scholz
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/002864fb437d46a38b8378ff4705910d
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:002864fb437d46a38b8378ff4705910d
record_format	dspace
spelling	oai:doaj.org-article:002864fb437d46a38b8378ff4705910d2021-11-18T08:25:38ZA modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.1932-620310.1371/journal.pone.0092436https://doaj.org/article/002864fb437d46a38b8378ff4705910d2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24686837/?tool=EBIhttps://doaj.org/toc/1932-6203In the western United States, pesticides used in agricultural and urban areas are often detected in streams and rivers that support threatened and endangered Pacific salmon. Although concentrations are rarely high enough to cause direct salmon mortality, they can reach levels sufficient to impair juvenile feeding behavior and limit macroinvertebrate prey abundance. This raises the possibility of direct adverse effects on juvenile salmon health in tandem with indirect effects on salmon growth as a consequence of reduced prey abundance. We modeled the growth of ocean-type Chinook salmon (Oncorhynchus tshawytscha) at the individual and population scales, investigating insecticides that differ in how long they impair salmon feeding behavior and in how toxic they are to salmon compared to macroinvertebrates. The relative importance of these direct vs. indirect effects depends both on how quickly salmon can recover and on the relative toxicity of an insecticide to salmon and their prey. Model simulations indicate that when exposed to a long-acting organophosphate insecticide that is highly toxic to salmon and invertebrates (e.g., chlorpyrifos), the long-lasting effect on salmon feeding behavior drives the reduction in salmon population growth with reductions in prey abundance having little additional impact. When exposed to short-acting carbamate insecticides at concentrations that salmon recover from quickly but are lethal to invertebrates (e.g., carbaryl), the impacts on salmon populations are due primarily to reductions in their prey. For pesticides like carbaryl, prey sensitivity and how quickly the prey community can recover are particularly important in determining the magnitude of impact on their predators. In considering both indirect and direct effects, we develop a better understanding of potential impacts of a chemical stressor on an endangered species and identify data gaps (e.g., prey recovery rates) that contribute uncertainty to these assessments.Kate H MacnealeJulann A SprombergDavid H BaldwinNathaniel L ScholzPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 3, p e92436 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kate H Macneale Julann A Spromberg David H Baldwin Nathaniel L Scholz A modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.
description	In the western United States, pesticides used in agricultural and urban areas are often detected in streams and rivers that support threatened and endangered Pacific salmon. Although concentrations are rarely high enough to cause direct salmon mortality, they can reach levels sufficient to impair juvenile feeding behavior and limit macroinvertebrate prey abundance. This raises the possibility of direct adverse effects on juvenile salmon health in tandem with indirect effects on salmon growth as a consequence of reduced prey abundance. We modeled the growth of ocean-type Chinook salmon (Oncorhynchus tshawytscha) at the individual and population scales, investigating insecticides that differ in how long they impair salmon feeding behavior and in how toxic they are to salmon compared to macroinvertebrates. The relative importance of these direct vs. indirect effects depends both on how quickly salmon can recover and on the relative toxicity of an insecticide to salmon and their prey. Model simulations indicate that when exposed to a long-acting organophosphate insecticide that is highly toxic to salmon and invertebrates (e.g., chlorpyrifos), the long-lasting effect on salmon feeding behavior drives the reduction in salmon population growth with reductions in prey abundance having little additional impact. When exposed to short-acting carbamate insecticides at concentrations that salmon recover from quickly but are lethal to invertebrates (e.g., carbaryl), the impacts on salmon populations are due primarily to reductions in their prey. For pesticides like carbaryl, prey sensitivity and how quickly the prey community can recover are particularly important in determining the magnitude of impact on their predators. In considering both indirect and direct effects, we develop a better understanding of potential impacts of a chemical stressor on an endangered species and identify data gaps (e.g., prey recovery rates) that contribute uncertainty to these assessments.
format	article
author	Kate H Macneale Julann A Spromberg David H Baldwin Nathaniel L Scholz
author_facet	Kate H Macneale Julann A Spromberg David H Baldwin Nathaniel L Scholz
author_sort	Kate H Macneale
title	A modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.
title_short	A modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.
title_full	A modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.
title_fullStr	A modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.
title_full_unstemmed	A modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.
title_sort	modeled comparison of direct and food web-mediated impacts of common pesticides on pacific salmon.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/002864fb437d46a38b8378ff4705910d
work_keys_str_mv	AT katehmacneale amodeledcomparisonofdirectandfoodwebmediatedimpactsofcommonpesticidesonpacificsalmon AT julannaspromberg amodeledcomparisonofdirectandfoodwebmediatedimpactsofcommonpesticidesonpacificsalmon AT davidhbaldwin amodeledcomparisonofdirectandfoodwebmediatedimpactsofcommonpesticidesonpacificsalmon AT nathaniellscholz amodeledcomparisonofdirectandfoodwebmediatedimpactsofcommonpesticidesonpacificsalmon AT katehmacneale modeledcomparisonofdirectandfoodwebmediatedimpactsofcommonpesticidesonpacificsalmon AT julannaspromberg modeledcomparisonofdirectandfoodwebmediatedimpactsofcommonpesticidesonpacificsalmon AT davidhbaldwin modeledcomparisonofdirectandfoodwebmediatedimpactsofcommonpesticidesonpacificsalmon AT nathaniellscholz modeledcomparisonofdirectandfoodwebmediatedimpactsofcommonpesticidesonpacificsalmon
_version_	1718421782063480832

A modeled comparison of direct and food web-mediated impacts of common pesticides on Pacific salmon.

Ejemplares similares