Apomictic parthenogenesis in a parasitoid wasp Meteorus pulchricornis, uncommon in the haplodiploid order Hymenoptera.
Bull Entomol Res
; 104(3): 307-13, 2014 Jun.
Article
em En
| MEDLINE
| ID: mdl-24521569
ABSTRACT
Although apomixis is the most common form of parthenogenesis in diplodiploid arthropods, it is uncommon in the haplodiploid insect order Hymenoptera. We found a new type of spontaneous apomixis in the Hymenoptera, completely lacking meiosis and the expulsion of polar bodies in egg maturation division, on the thelytokous strain of a parasitoid wasp Meteorus pulchricornis (Wesmael) (Braconidae, Euphorinae) on pest lepidopteran larvae Spodoptera litura (Fabricius) (Noctuidae). The absence of the meiotic process was consistent with a non-segregation pattern in the offspring of heterozygous females, and no positive evidence was obtained for the induction of thelytoky by any bacterial symbionts. We discuss the conditions that enable the occurrence of such rare cases of apomictic thelytoky in the Hymenoptera, suggesting the significance of fixed heterosis caused by hybridization or polyploidization, symbiosis with bacterial agents, and occasional sex. Our finding will encourage further genetic studies on parasitoid wasps to use asexual lines more wisely for biological control.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Partenogênese
/
Simbiose
/
Vespas
/
Fenômenos Fisiológicos Bacterianos
Limite:
Animals
País/Região como assunto:
Asia
Idioma:
En
Revista:
Bull Entomol Res
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Japão