Cargando…

The effect of age on sperm stock and egg laying in the parasitoid wasp, Dinarmus basalis

Sperm quantity and quality during storage may be constraints acting on female fecundity and hence fitness. In Hymenoptera, the importance of sperm quality has rarely been considered, despite its central role in reproductive strategies and especially in sex ratio control. In these insects, fertilized...

Descripción completa

Detalles Bibliográficos
Autores principales: Damiens, D., Bressac, C., Chevrier, C.
Formato: Texto
Lenguaje:English
Publicado: University of Arizona Library 2003
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC524661/
https://www.ncbi.nlm.nih.gov/pubmed/15841238
_version_ 1782121916881960960
author Damiens, D.
Bressac, C.
Chevrier, C.
author_facet Damiens, D.
Bressac, C.
Chevrier, C.
author_sort Damiens, D.
collection PubMed
description Sperm quantity and quality during storage may be constraints acting on female fecundity and hence fitness. In Hymenoptera, the importance of sperm quality has rarely been considered, despite its central role in reproductive strategies and especially in sex ratio control. In these insects, fertilized eggs develop into females and unfertilized eggs into males. Experiments were conducted on the female wasp, Dinarmus basalis, in the laboratory with and without egg-laying resources (hosts). The first point was to test if sperm age influenced sperm storage by measuring sperm count and viability using a sperm viability test (SYBR14 : propidium iodide). The second point was the influence of prolonged storage in the female genital tract on the quantity, sex ratio and fitness of offspring produced. Results show that sperm viability in the spermatheca does not change significantly with maternal age, and that the sperm stock is not affected when females are deprived of hosts. Egg-laying is gradually restored after 21 days of host deprivation but remains at a low level after 115 days. The fitness of mated D. basalis females is therefore not constrained by sperm quantity or quality and seems to depend on host availability and female age.
format Text
id pubmed-524661
institution National Center for Biotechnology Information
language English
publishDate 2003
publisher University of Arizona Library
record_format MEDLINE/PubMed
spelling pubmed-5246612005-03-28 The effect of age on sperm stock and egg laying in the parasitoid wasp, Dinarmus basalis Damiens, D. Bressac, C. Chevrier, C. J Insect Sci Articles Sperm quantity and quality during storage may be constraints acting on female fecundity and hence fitness. In Hymenoptera, the importance of sperm quality has rarely been considered, despite its central role in reproductive strategies and especially in sex ratio control. In these insects, fertilized eggs develop into females and unfertilized eggs into males. Experiments were conducted on the female wasp, Dinarmus basalis, in the laboratory with and without egg-laying resources (hosts). The first point was to test if sperm age influenced sperm storage by measuring sperm count and viability using a sperm viability test (SYBR14 : propidium iodide). The second point was the influence of prolonged storage in the female genital tract on the quantity, sex ratio and fitness of offspring produced. Results show that sperm viability in the spermatheca does not change significantly with maternal age, and that the sperm stock is not affected when females are deprived of hosts. Egg-laying is gradually restored after 21 days of host deprivation but remains at a low level after 115 days. The fitness of mated D. basalis females is therefore not constrained by sperm quantity or quality and seems to depend on host availability and female age. University of Arizona Library 2003-07-28 /pmc/articles/PMC524661/ /pubmed/15841238 Text en Copyright © 2003. Open access; copyright is maintained by the authors.
spellingShingle Articles
Damiens, D.
Bressac, C.
Chevrier, C.
The effect of age on sperm stock and egg laying in the parasitoid wasp, Dinarmus basalis
title The effect of age on sperm stock and egg laying in the parasitoid wasp, Dinarmus basalis
title_full The effect of age on sperm stock and egg laying in the parasitoid wasp, Dinarmus basalis
title_fullStr The effect of age on sperm stock and egg laying in the parasitoid wasp, Dinarmus basalis
title_full_unstemmed The effect of age on sperm stock and egg laying in the parasitoid wasp, Dinarmus basalis
title_short The effect of age on sperm stock and egg laying in the parasitoid wasp, Dinarmus basalis
title_sort effect of age on sperm stock and egg laying in the parasitoid wasp, dinarmus basalis
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC524661/
https://www.ncbi.nlm.nih.gov/pubmed/15841238
work_keys_str_mv AT damiensd theeffectofageonspermstockandegglayingintheparasitoidwaspdinarmusbasalis
AT bressacc theeffectofageonspermstockandegglayingintheparasitoidwaspdinarmusbasalis
AT chevrierc theeffectofageonspermstockandegglayingintheparasitoidwaspdinarmusbasalis
AT damiensd effectofageonspermstockandegglayingintheparasitoidwaspdinarmusbasalis
AT bressacc effectofageonspermstockandegglayingintheparasitoidwaspdinarmusbasalis
AT chevrierc effectofageonspermstockandegglayingintheparasitoidwaspdinarmusbasalis