Sperm limitation drosophila

Johnston SJ, Heed WB Dispersal of desert-adapted Drosophila: Export a RIS file For EndNote, ProCite, Reference Manager, Zotero…. Taxonomy Taxonomy Taxonomy Browser Taxonomy Common Tree All Taxonomy Resources Effect of mating history on sperm production rate in Drosophila bifurca. Selection might similarly be expected to favour modulation of the rate at which sperm are produced. Males in the frequent mating treatment were estimated to produce

In this case, its role in female pronuclear migration would be indirect, perhaps by allowing the normal function of the sperm aster. Hosken CB Dis Experimental lobe amputation by micro-surgery and laser-ablation of lobe bristles led to aberrant coupling of genitalia and variable mating positions, in which the male was tilted towards the right side of the female. This instead suggests that Ya establishes, in a more subtle manner, a nuclear architecture compatible with the unique streamlined nuclear cycles of early Drosophila embryos [ ]. The exocytic reaction also exposes the inner acrosomal membrane, which eventually fuses with the egg plasma membrane to release the sperm nucleus into the egg cytoplasm [ 42 , 43 ].

Finally, we tested whether polyandry enhances egg-to-adult survival over that achieved via monogamy when monogamous females received ejaculates on more than 1 d i. However, as predicted, the OSR of populations, at least in one season, tended to be female-biased, with an average of 2. The response to infection can involve up to 2, genes, or Author links open overlay panel Nina Wedell a Matthew J.

Sexual selection and mating advantages in the giant sperm species, Drosophila bifurca. Export a Text file For BibTex. Add to My Bibliography. A new section, "Methods", considers submissions dealing with statistical procedures and their problems, as well as with problems related to measurement techniques. Dewsbury DA Ejaculate cost and male choice. It follows that males might also be predicted to adaptively modulate the rate at which sperm are produced. The demonstration protocol was the same as in the With information treatment of Experiment 1 except that we only used Mated and Unmated males.