Polyembryonic Wasp Research Articles

Oviposition behavior and progeny allocation of the polyembryonic waspCopidosoma floridanum (Hymenoptera: Encyrtidae)

Oviposition behavior was used to determine the primary clutch size and sex ratio of the polyembryonic wasp Copidosoma floridanumAshmead (Hymenoptera: Encyrtidae) parasitizing Pseudoplusia includens(Walker) (Lepidoptera: Noctuidae). The laying of a female egg was associated with a pause in abdominal contractions during oviposition, while the laying of a male egg was associated with uninterrupted abdominal contractions. Although unmated females produced only male broods, they also displayed male and female egg oviposition movements. Wasps always laid a primary clutch of one or two eggs. For mated females if only one egg was laid, the emerging secondary clutch was all male or female, but if two eggs were laid a mixed brood of males and females was almost always produced. The secondary clutch of single sex broods was usually between 1000 and 1200 individuals, but the secondary clutch of mixed broods averaged 1143 females and 49 males. Thus, the primary sex ratio for mixed broods was 0.5 (frequency males), but the secondary sex ratio was 0.042. Manipulation of the sequence of male and female egg oviposition or of the primary clutch did not produce major alterations in the secondary clutch size or sex ratio.

Locating Synthetic Lethals

Previous articleNext article No AccessLetters to the EditorsLocating Synthetic LethalsJ.M. ThodayJ.M. Thoday Search for more articles by this author PDFPDF PLUS Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by The American Naturalist Volume 97, Number 896Sep. - Oct., 1963 Published for The American Society of Naturalists Article DOIhttps://doi.org/10.1086/282285 Views: 5Total views on this site Citations: 32Citations are reported from Crossref PDF download Crossref reports the following articles citing this article:Lutz Fromhage, Hanna Kokko Monogamy and haplodiploidy act in synergy to promote the evolution of eusociality, Nature Communications 2, no.11 (Jul 2011).https://doi.org/10.1038/ncomms1410John S Chuang, Olivier Rivoire, Stanislas Leibler Cooperation and Hamilton's rule in a simple synthetic microbial system, Molecular Systems Biology 6, no.11 (Aug 2010): 398.https://doi.org/10.1038/msb.2010.57P. A. Araúz, F. Mestres, C. Pegueroles, C. Arenas, G. Tzannidakis, C. B. 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