Skip to Main Content
Spermatodesmata of the Sawflies (Hymenoptera: Symphyta): Evidence for Multiple Increases in Sperm Bundle SizeAuthor(s): Nathan Schiff; Anthony J. Flemming; Donald L.J. Quicke
Source: J. Hym. Res. Vol. 10(2), 2001, pp. 119-125
Publication Series: Miscellaneous Publication
PDF: View PDF (559 KB)
DescriptionWe present the first survey of spermatodesmata (bundles of spermatozoa connected at the head by an extracellular 'gelatinous' matrix) across the sawfly superfamilies. Spermatodesmata occur in all examined taxa within the sawfly grade (Xyelidae-Orussidae inclusive), but are not found in the Apocrita. Using DAPI staining, the numbers of individual sperm per spermatodesm were calculated and the values obtained are mapped on to the current phylogenetic hypothesis. The plesiomorphic spermatodesm in the Hymenoptera, based on that observed in the putatively basal family Xyelidae, contains relatively few sperm, approximately 16. However, in the Tenthredinoidea and in the Siricidae, far larger numbers are found, reaching up to 256 in the Cimbicidae.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationSchiff, Nathan; Flemming, Anthony J.; Quicke, Donald L.J. 2001. Spermatodesmata of the Sawflies (Hymenoptera: Symphyta): Evidence for Multiple Increases in Sperm Bundle Size. J. Hym. Res. Vol. 10(2), 2001, pp. 119-125
- Parasitism of the wheat stem sawfly (Hymenoptera: Cephidae) by Bracon cephi and B. liflogaster (Hymenoptera: Braconidae) in wheat fields bordering tilled and untilled fallow in Montana
- Assessing phenological synchrony between the Chinese sawfly, Cephus fumipennis, its egg-larval parasitoid, Collyria catoptron, and the North American sawfly, Cephus cinctus: Implications for biological control
- Larch sawfly, Pristiphora ericltsortii (Hymenoptera: Tenthredinidae) and its parasitoids from Alaska
XML: View XML