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Survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume

A series of laboratory experiments was conducted to better understand the behavior of grass carp eggs and larvae in moving water in order to develop and implement new strategies for control and prediction of their dispersal and drift at early life stages. Settling velocity and density of a represent...

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Autores principales: Prada, Andres F., George, Amy E., Stahlschmidt, Benjamin H., Chapman, Duane C., Tinoco, Rafael O.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6300213/
https://www.ncbi.nlm.nih.gov/pubmed/30566492
http://dx.doi.org/10.1371/journal.pone.0208326
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author Prada, Andres F.
George, Amy E.
Stahlschmidt, Benjamin H.
Chapman, Duane C.
Tinoco, Rafael O.
author_facet Prada, Andres F.
George, Amy E.
Stahlschmidt, Benjamin H.
Chapman, Duane C.
Tinoco, Rafael O.
author_sort Prada, Andres F.
collection PubMed
description A series of laboratory experiments was conducted to better understand the behavior of grass carp eggs and larvae in moving water in order to develop and implement new strategies for control and prediction of their dispersal and drift at early life stages. Settling velocity and density of a representative sample of eggs were estimated, and three trials of flume experiments with different flow conditions were conducted with live eggs in a temperature-controlled setting with a mobile sediment bed. In these trials, egg and larval stages were continuously analyzed over periods of 80 hours; and eggs and larvae interactions with the flow and sediment bed were monitored and characterized qualitatively and quantitatively. Survival rates were quantified after each trial, highlighting physical causes for increased mortality. Detailed flow analysis was correlated to the observed drifting and swimming behavior of eggs and larvae, to estimate distributions across the water depth, as well as traveling and swimming speeds. Evidence of the influence of mean and turbulent flow in the suspension and transport of eggs are reported, and swimming patterns of larvae at different developmental stages are described. These findings support the development of new strategies for monitoring the spread of grass carp eggs and larvae in rivers, and provide new inputs to predict conditions favorable for spawning and hatching, allowing for mitigation measures at early life stages, which are critical to control their dispersal.
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spelling pubmed-63002132018-12-28 Survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume Prada, Andres F. George, Amy E. Stahlschmidt, Benjamin H. Chapman, Duane C. Tinoco, Rafael O. PLoS One Research Article A series of laboratory experiments was conducted to better understand the behavior of grass carp eggs and larvae in moving water in order to develop and implement new strategies for control and prediction of their dispersal and drift at early life stages. Settling velocity and density of a representative sample of eggs were estimated, and three trials of flume experiments with different flow conditions were conducted with live eggs in a temperature-controlled setting with a mobile sediment bed. In these trials, egg and larval stages were continuously analyzed over periods of 80 hours; and eggs and larvae interactions with the flow and sediment bed were monitored and characterized qualitatively and quantitatively. Survival rates were quantified after each trial, highlighting physical causes for increased mortality. Detailed flow analysis was correlated to the observed drifting and swimming behavior of eggs and larvae, to estimate distributions across the water depth, as well as traveling and swimming speeds. Evidence of the influence of mean and turbulent flow in the suspension and transport of eggs are reported, and swimming patterns of larvae at different developmental stages are described. These findings support the development of new strategies for monitoring the spread of grass carp eggs and larvae in rivers, and provide new inputs to predict conditions favorable for spawning and hatching, allowing for mitigation measures at early life stages, which are critical to control their dispersal. Public Library of Science 2018-12-19 /pmc/articles/PMC6300213/ /pubmed/30566492 http://dx.doi.org/10.1371/journal.pone.0208326 Text en https://creativecommons.org/publicdomain/zero/1.0/ This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 (https://creativecommons.org/publicdomain/zero/1.0/) public domain dedication.
spellingShingle Research Article
Prada, Andres F.
George, Amy E.
Stahlschmidt, Benjamin H.
Chapman, Duane C.
Tinoco, Rafael O.
Survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume
title Survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume
title_full Survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume
title_fullStr Survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume
title_full_unstemmed Survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume
title_short Survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume
title_sort survival and drifting patterns of grass carp eggs and larvae in response to interactions with flow and sediment in a laboratory flume
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6300213/
https://www.ncbi.nlm.nih.gov/pubmed/30566492
http://dx.doi.org/10.1371/journal.pone.0208326
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