Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?

Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?

Natural enemies may go through genetic bottlenecks during the process of biological control introductions. Such bottlenecks are expected to be particularly detrimental in parasitoid Hymenoptera that exhibit complementary sex determination (CSD). CSD is associated with a severe form of inbreeding dep...

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Main Authors: Boer, Jetske G, Kuijper, Bram, Heimpel, George E, Beukeboom, Leo W
Format: Online
Language:English
Published: Blackwell Publishing Ltd 2012
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3407863/
id pubmed-3407863
recordtype oai_dc
spelling pubmed-34078632012-07-30 Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula? Boer, Jetske G Kuijper, Bram Heimpel, George E Beukeboom, Leo W Original Articles Natural enemies may go through genetic bottlenecks during the process of biological control introductions. Such bottlenecks are expected to be particularly detrimental in parasitoid Hymenoptera that exhibit complementary sex determination (CSD). CSD is associated with a severe form of inbreeding depression because homozygosity at one or multiple sex loci leads to the production of diploid males that are typically unviable or sterile. We observed that diploid males occur at a relatively high rate (8–13% of diploid adults) in a field population of Cotesia rubecula in Minnesota, USA, where this parasitoid was introduced for biological control of the cabbage white Pieris rapae. However, our laboratory crosses suggest two-locus CSD in a native Dutch population of C. rubecula and moderately high diploid males survival (approximately 70%), a scenario expected to produce low proportions of diploid males. We also show that courtship behavior of diploid males is similar to that of haploid males, but females mated to diploid males produce only very few daughters that are triploid. We use our laboratory data to estimate sex allele diversity in the field population of C. rubecula and discuss the possibility of a sex determination meltdown from two-locus CSD to effective single-locus CSD during or after introduction. Blackwell Publishing Ltd 2012-07 2012-06-07 /pmc/articles/PMC3407863/ /pubmed/22949920 http://dx.doi.org/10.1111/j.1752-4571.2012.00270.x Text en Journal compilation © 2012 Blackwell Publishing Ltd
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Boer, Jetske G
Kuijper, Bram
Heimpel, George E
Beukeboom, Leo W
spellingShingle Boer, Jetske G
Kuijper, Bram
Heimpel, George E
Beukeboom, Leo W
Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?
author_facet Boer, Jetske G
Kuijper, Bram
Heimpel, George E
Beukeboom, Leo W
author_sort Boer, Jetske G
title Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?
title_short Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?
title_full Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?
title_fullStr Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?
title_full_unstemmed Sex determination meltdown upon biological control introduction of the parasitoid Cotesia rubecula?
title_sort sex determination meltdown upon biological control introduction of the parasitoid cotesia rubecula?
description Natural enemies may go through genetic bottlenecks during the process of biological control introductions. Such bottlenecks are expected to be particularly detrimental in parasitoid Hymenoptera that exhibit complementary sex determination (CSD). CSD is associated with a severe form of inbreeding depression because homozygosity at one or multiple sex loci leads to the production of diploid males that are typically unviable or sterile. We observed that diploid males occur at a relatively high rate (8–13% of diploid adults) in a field population of Cotesia rubecula in Minnesota, USA, where this parasitoid was introduced for biological control of the cabbage white Pieris rapae. However, our laboratory crosses suggest two-locus CSD in a native Dutch population of C. rubecula and moderately high diploid males survival (approximately 70%), a scenario expected to produce low proportions of diploid males. We also show that courtship behavior of diploid males is similar to that of haploid males, but females mated to diploid males produce only very few daughters that are triploid. We use our laboratory data to estimate sex allele diversity in the field population of C. rubecula and discuss the possibility of a sex determination meltdown from two-locus CSD to effective single-locus CSD during or after introduction.
publisher Blackwell Publishing Ltd
publishDate 2012
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3407863/
_version_ 1611546373704908800

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