The cytogenetics of thelytoky in a predominantly asexual parasitoid wasp with covert sex.

Abstract:

:Asexual lineages in the parasitoid wasp Lysiphlebus fabarum (Hymenoptera: Braconidae: Aphidiinae) have previously been shown to have occasionally undergone sexual reproduction and recombination with males from related sexual populations. In the present study, the cytogenetic system of asexual females in this species is shown by 4',6-diamidino-2-phenylindole dihydrochloride (DAPI) staining to be central fusion automixis. This system has the potential to allow occasional sex and recombination without leading to an elevation of ploidy and with the maintenance of at least some heterozygosity. No evidence of the bacterial symbiont Wolbachia was found, and the observed system was compared with that in parasitoid wasps where asexuality is the result of Wolbachia infection.

journal_name

Genome

journal_title

Genome

authors

Belshaw R,Quicke DL

doi

10.1139/g02-112

subject

Has Abstract

pub_date

2003-02-01 00:00:00

pages

170-3

issue

1

eissn

0831-2796

issn

1480-3321

pii

g02-112

journal_volume

46

pub_type

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