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The size of larval rearing container modulates the effects of diet amount and larval density on larval development in Aedes aegypti

Mass-rearing of mosquitoes under laboratory conditions is an important part of several new control techniques that rely on the release of males to control mosquito populations. While previous work has investigated the effect of larval density and diet amount on colony productivity, the role of the s...

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Autores principales: Qureshi, Alima, Keen, Elizabeth, Brown, George, Cator, Lauren
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9876358/
https://www.ncbi.nlm.nih.gov/pubmed/36696416
http://dx.doi.org/10.1371/journal.pone.0280736
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author Qureshi, Alima
Keen, Elizabeth
Brown, George
Cator, Lauren
author_facet Qureshi, Alima
Keen, Elizabeth
Brown, George
Cator, Lauren
author_sort Qureshi, Alima
collection PubMed
description Mass-rearing of mosquitoes under laboratory conditions is an important part of several new control techniques that rely on the release of males to control mosquito populations. While previous work has investigated the effect of larval density and diet amount on colony productivity, the role of the size of the container in which larval development takes place has been relatively ignored. We investigated the role of container size in shaping life history and how this varied with density and food availability in Aedes aegypti, an important disease vector and target of mass-rearing operations. For each treatment combination, immature development time and survival and adult body size and fecundity were measured, and then combined into a measure of productivity. We additionally investigated how larval aggregation behaviour varied with container size. Container size had important effects on life history traits and overall productivity. In particular, increasing container size intensified density and diet effects on immature development time. Productivity was also impacted by container size when larvae were reared at high densities (1.4 larva/ml). In these treatments, the productivity metric of large containers was estimated to be significantly lower than medium or small containers. Regardless of container size, larvae were more likely to be observed at the outer edges of containers, even when this led to extremely high localized densities. We discuss how container size and larval aggregation responses may alter the balance of energy input and output to shape development and productivity.
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spelling pubmed-98763582023-01-26 The size of larval rearing container modulates the effects of diet amount and larval density on larval development in Aedes aegypti Qureshi, Alima Keen, Elizabeth Brown, George Cator, Lauren PLoS One Research Article Mass-rearing of mosquitoes under laboratory conditions is an important part of several new control techniques that rely on the release of males to control mosquito populations. While previous work has investigated the effect of larval density and diet amount on colony productivity, the role of the size of the container in which larval development takes place has been relatively ignored. We investigated the role of container size in shaping life history and how this varied with density and food availability in Aedes aegypti, an important disease vector and target of mass-rearing operations. For each treatment combination, immature development time and survival and adult body size and fecundity were measured, and then combined into a measure of productivity. We additionally investigated how larval aggregation behaviour varied with container size. Container size had important effects on life history traits and overall productivity. In particular, increasing container size intensified density and diet effects on immature development time. Productivity was also impacted by container size when larvae were reared at high densities (1.4 larva/ml). In these treatments, the productivity metric of large containers was estimated to be significantly lower than medium or small containers. Regardless of container size, larvae were more likely to be observed at the outer edges of containers, even when this led to extremely high localized densities. We discuss how container size and larval aggregation responses may alter the balance of energy input and output to shape development and productivity. Public Library of Science 2023-01-25 /pmc/articles/PMC9876358/ /pubmed/36696416 http://dx.doi.org/10.1371/journal.pone.0280736 Text en © 2023 Qureshi et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Qureshi, Alima
Keen, Elizabeth
Brown, George
Cator, Lauren
The size of larval rearing container modulates the effects of diet amount and larval density on larval development in Aedes aegypti
title The size of larval rearing container modulates the effects of diet amount and larval density on larval development in Aedes aegypti
title_full The size of larval rearing container modulates the effects of diet amount and larval density on larval development in Aedes aegypti
title_fullStr The size of larval rearing container modulates the effects of diet amount and larval density on larval development in Aedes aegypti
title_full_unstemmed The size of larval rearing container modulates the effects of diet amount and larval density on larval development in Aedes aegypti
title_short The size of larval rearing container modulates the effects of diet amount and larval density on larval development in Aedes aegypti
title_sort size of larval rearing container modulates the effects of diet amount and larval density on larval development in aedes aegypti
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9876358/
https://www.ncbi.nlm.nih.gov/pubmed/36696416
http://dx.doi.org/10.1371/journal.pone.0280736
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