Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here


No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

The insemination capability of males of the parasitoid wasp, Cotesia glomerata L. (Hymenoptera: Braconidae) was investigated under laboratory conditions. When single males were kept with five or ten virgin females, most males were able to inseminate almost all females within 1 day. However, when kept with 20 females, no males were able to inseminate all accompanying females within one day. The mean number of inseminations per male was 14, and the number of inseminations was not affected by male weight nor by the sex ratio of the cluster from which the male emerged. When newly emerged adults were kept with cocoon clusters from which they had emerged, on average nearly 75% of females were inseminated within 1 day; in some clusters, all females were successfully inseminated. Within a cluster, the number of inseminated females per male was not influenced by male weight nor by the sex ratio of the cluster. Therefore, each male of C. glomerata was considered to be equally capable of inseminating females, regardless of his origin. When males were offered ten virgin females daily, the number of inseminations per day began to decrease within a few days. No males lived more than 2 weeks, and for many males the total number of inseminations during their lifetime exceeded 30. A male's capability to inseminate females highly exceeded the common sex ratios of cocoon clusters and was considered to reflect the mating structure of this species.


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Netherlands Journal of Zoology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation