Sperm length in drosophilidae (Diptera): Estimation by testis and receptacle lengths |
| |
| Affiliation: | 1. Grup de Geologia Aplicada i Ambiental (GAiA), Department of Environmental Sciences, University of Girona, Faculty of Sciences, Campus de Montilivi, 17071 Girona, Spain;2. Grup de Recerca en Ecosistemes Continentals (GRECO), Institute of Aquatic Ecology, University of Girona, Faculty of Sciences, Campus de Montilivi, 17071 Girona, Spain |
| |
| Abstract: | Drosophilidae (Diptera) are well known for tremendous variability in sperm length as great as that found among vertebrates and invertebrates together. Paradoxically, the great length (> 1 mm) of Drosophila sperm creates difficulties for measuring them. Evidence is provided that the length of giant sperm can be indirectly, albeit reliably, estimated using the regression lines between sperm and testis or receptacle lengths, established from 26 species with short- and mid-length sperm. Using this method, the sperm length in Drosophila hydei was estimated to be about 17 mm, which would be the longest in the animal kingdom. The phylogenetic relationships between species are discussed. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
