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Stage-Specific Effects of Population Density on the Development and Fertility of the Western Tarnished Plant Bug, Lygus hesperus
The western tarnished plant bug Lygus hesperus Knight (Heteroptera: Miridae), a major pest of cotton and other key economic crops, was tested for its sensitivity to population density during nymph and adult stages. Nymphs reared to adulthood under increasing densities in laboratory conditions exhibi...
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Formato: | Texto |
Lenguaje: | English |
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University of Wisconsin Library
2010
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3014799/ https://www.ncbi.nlm.nih.gov/pubmed/20572784 http://dx.doi.org/10.1673/031.010.4901 |
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author | Brent, Colin S. |
author_facet | Brent, Colin S. |
author_sort | Brent, Colin S. |
collection | PubMed |
description | The western tarnished plant bug Lygus hesperus Knight (Heteroptera: Miridae), a major pest of cotton and other key economic crops, was tested for its sensitivity to population density during nymph and adult stages. Nymphs reared to adulthood under increasing densities in laboratory conditions exhibited incremental delays in maturation, heightened mortality rates, and reductions in body mass and various size parameters. In contrast, gonadal activity in both males and females rose with initial density increases. Supplemental nutrients provided to the nymphs failed to offset the negative effects of high density, suggesting that contact frequency, rather than resource partitioning, may be the primary stress. Unlike nymphs, newly eclosed adults exposed to increasing population densities did not suffer negative physiological effects; body mass, mortality rates and patterns of ovipositional activity were unchanged. Collectively, these results indicate that population density can dramatically influence Lygus development, but the specific effects are stage-dependent. |
format | Text |
id | pubmed-3014799 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | University of Wisconsin Library |
record_format | MEDLINE/PubMed |
spelling | pubmed-30147992012-02-09 Stage-Specific Effects of Population Density on the Development and Fertility of the Western Tarnished Plant Bug, Lygus hesperus Brent, Colin S. J Insect Sci Article The western tarnished plant bug Lygus hesperus Knight (Heteroptera: Miridae), a major pest of cotton and other key economic crops, was tested for its sensitivity to population density during nymph and adult stages. Nymphs reared to adulthood under increasing densities in laboratory conditions exhibited incremental delays in maturation, heightened mortality rates, and reductions in body mass and various size parameters. In contrast, gonadal activity in both males and females rose with initial density increases. Supplemental nutrients provided to the nymphs failed to offset the negative effects of high density, suggesting that contact frequency, rather than resource partitioning, may be the primary stress. Unlike nymphs, newly eclosed adults exposed to increasing population densities did not suffer negative physiological effects; body mass, mortality rates and patterns of ovipositional activity were unchanged. Collectively, these results indicate that population density can dramatically influence Lygus development, but the specific effects are stage-dependent. University of Wisconsin Library 2010-05-17 /pmc/articles/PMC3014799/ /pubmed/20572784 http://dx.doi.org/10.1673/031.010.4901 Text en © 2010 http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Article Brent, Colin S. Stage-Specific Effects of Population Density on the Development and Fertility of the Western Tarnished Plant Bug, Lygus hesperus |
title | Stage-Specific Effects of Population Density on the Development and Fertility of the Western Tarnished Plant Bug, Lygus hesperus
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title_full | Stage-Specific Effects of Population Density on the Development and Fertility of the Western Tarnished Plant Bug, Lygus hesperus
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title_fullStr | Stage-Specific Effects of Population Density on the Development and Fertility of the Western Tarnished Plant Bug, Lygus hesperus
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title_full_unstemmed | Stage-Specific Effects of Population Density on the Development and Fertility of the Western Tarnished Plant Bug, Lygus hesperus
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title_short | Stage-Specific Effects of Population Density on the Development and Fertility of the Western Tarnished Plant Bug, Lygus hesperus
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title_sort | stage-specific effects of population density on the development and fertility of the western tarnished plant bug, lygus hesperus |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3014799/ https://www.ncbi.nlm.nih.gov/pubmed/20572784 http://dx.doi.org/10.1673/031.010.4901 |
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