10.5061/DRYAD.05PR1N8
Hamilton, Phineas T.
University of Victoria
Hodson, Christina N.
University of Victoria
University of Edinburgh
Curtis, Caitlin I.
University of Victoria
Perlman, Steve J.
University of Victoria
Data from: Genetics and genomics of an unusual selfish sex ratio
distortion in an insect
Dryad
dataset
2018
Wolbachia
Paternal genome elimination
Sex determination
Selfish genetic elements
Genetic conflict
Booklice
Lice
Liposcelis sp.
2018-11-16T18:19:11Z
2018-11-16T18:19:11Z
en
https://doi.org/10.1016/j.cub.2018.10.035
149069564 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Diverse selfish genetic elements have evolved the ability to manipulate
reproduction to increase their transmission, and this can result in highly
distorted sex ratios. Indeed, one of the major explanations for why sex
determination systems are so dynamic is because they are shaped by ongoing
coevolutionary arms races between sex ratio distorting elements and the
rest of the genome. Here, we use genetic crosses and genome analysis to
describe an unusual sex ratio distortion with striking consequences on
genome organization in a booklouse species, Liposcelis sp. (Insecta:
Psocodea), in which two types of females coexist. Distorter females never
produce sons but must mate with males (the sons of nondistorting females)
to reproduce. Although they are diploid and express the genes inherited
from their fathers in somatic tissues, distorter females only ever
transmit genes inherited from their mothers. As a result, distorter
females have unusual chimeric genomes, with distorter-restricted
chromosomes diverging from their nondistorting counterparts and exhibiting
features of a giant nonrecombining sex chromosome. The
distorter-restricted genome has also acquired a gene from the bacterium
Wolbachia, a well-known insect reproductive manipulator; we found that
this gene has independently colonized the genomes of two other insect
species with unusual reproductive systems suggesting possible roles in sex
ratio distortion in this remarkable genetic system.
Hamilton_etal_2018_Liposcelis_DataCompiled data from 'Genetics and
genomics of an unusual selfish sex ratio distortion in an insect'.
Contains seven files, including genome and transcriptome assemblies, as
well as read mappings. See included outline for more
details.Hamilton_etal_2018_Liposcelis.zip