Multiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.

<h4>Background</h4>Levels of genetic diversity can strongly influence the dynamics and evolutionary changes of natural populations. Survival and disease resistance have been linked to levels of genetic diversity in eusocial insects, yet these relationships remain untested in gregarious i...

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Autores principales:	Michelle T Franklin, Carol E Ritland, Judith H Myers, Jenny S Cory
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9f66be054499478f99eb7c1f373d0b14
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spelling	oai:doaj.org-article:9f66be054499478f99eb7c1f373d0b142021-11-18T07:17:33ZMultiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.1932-620310.1371/journal.pone.0037472https://doaj.org/article/9f66be054499478f99eb7c1f373d0b142012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22655050/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Levels of genetic diversity can strongly influence the dynamics and evolutionary changes of natural populations. Survival and disease resistance have been linked to levels of genetic diversity in eusocial insects, yet these relationships remain untested in gregarious insects where disease transmission can be high and selection for resistance is likely to be strong.<h4>Methodology/principal findings</h4>Here we use 8 microsatellite loci to examine genetic variation in 12 families of western tent caterpillars, Malacosoma californicum pluviale from four different island populations to determine the relationship of genetic variability to survival and disease resistance. In addition these genetic markers were used to elucidate the population structure of western tent caterpillars. Multiple paternity was revealed by microsatellite markers, with the number of sires estimated to range from one to three per family (mean ± SE = 1.92±0.23). Observed heterozygosity (H(O)) of families was not associated to the resistance of families to a nucleopolyhedrovirus (NPV) (r = 0.161, F(1,12) = 0.271, P = 0.614), a major cause of mortality in high-density populations, but was positively associated with larval survival (r = 0.635, F(1,10) = 5.412, P = 0.048). Genetic differentiation among the families was high (F(ST) = 0.269, P<0.0001), and families from the same island were as differentiated as were families from other islands.<h4>Conclusion/significance</h4>We have been able to describe and characterize 8 microsatellite loci, which demonstrate patterns of variation within and between families of western tent caterpillars. We have discovered an association between larval survival and family-level heterozygosity that may be relevant to the population dynamics of this cyclic forest lepidopteran, and this will be the topic of future work.Michelle T FranklinCarol E RitlandJudith H MyersJenny S CoryPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 5, p e37472 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Michelle T Franklin Carol E Ritland Judith H Myers Jenny S Cory Multiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.
description	<h4>Background</h4>Levels of genetic diversity can strongly influence the dynamics and evolutionary changes of natural populations. Survival and disease resistance have been linked to levels of genetic diversity in eusocial insects, yet these relationships remain untested in gregarious insects where disease transmission can be high and selection for resistance is likely to be strong.<h4>Methodology/principal findings</h4>Here we use 8 microsatellite loci to examine genetic variation in 12 families of western tent caterpillars, Malacosoma californicum pluviale from four different island populations to determine the relationship of genetic variability to survival and disease resistance. In addition these genetic markers were used to elucidate the population structure of western tent caterpillars. Multiple paternity was revealed by microsatellite markers, with the number of sires estimated to range from one to three per family (mean ± SE = 1.92±0.23). Observed heterozygosity (H(O)) of families was not associated to the resistance of families to a nucleopolyhedrovirus (NPV) (r = 0.161, F(1,12) = 0.271, P = 0.614), a major cause of mortality in high-density populations, but was positively associated with larval survival (r = 0.635, F(1,10) = 5.412, P = 0.048). Genetic differentiation among the families was high (F(ST) = 0.269, P<0.0001), and families from the same island were as differentiated as were families from other islands.<h4>Conclusion/significance</h4>We have been able to describe and characterize 8 microsatellite loci, which demonstrate patterns of variation within and between families of western tent caterpillars. We have discovered an association between larval survival and family-level heterozygosity that may be relevant to the population dynamics of this cyclic forest lepidopteran, and this will be the topic of future work.
format	article
author	Michelle T Franklin Carol E Ritland Judith H Myers Jenny S Cory
author_facet	Michelle T Franklin Carol E Ritland Judith H Myers Jenny S Cory
author_sort	Michelle T Franklin
title	Multiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.
title_short	Multiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.
title_full	Multiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.
title_fullStr	Multiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.
title_full_unstemmed	Multiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.
title_sort	multiple mating and family structure of the western tent caterpillar, malacosoma californicum pluviale: impact on disease resistance.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/9f66be054499478f99eb7c1f373d0b14
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Multiple mating and family structure of the western tent caterpillar, Malacosoma californicum pluviale: impact on disease resistance.

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