| Titre : | Sperm length in sand martins Riparia riparia: a comment on Helfenstein et al |
| Auteurs : | Oddmund Kleven, Auteur ; Terje Laskemoen, Auteur ; Jan T. Lifjeld, Auteur |
| Type de document : | Article |
| Dans : | Journal of Avian Biology (40(3) MAY 2009) |
| Article en page(s) : | 241-242 |
| Langues: | Anglais |
| Résumé : | How long is a sand martin Riparia riparia spermatozoon? In a recent study, Helfenstein et al. (2008) presented data on the intraspecific variation in sperm length, swimming speed and longevity in this species and some interesting correlations between these variables. However, the reported sperm lengths are remarkably short for the species, which casts doubts about whether sperm total length has actually been measured and how the observed relationships should be interpreted. |



