Reproductive consequences of an extra long-term sperm storage organ
Open Access
- 30 November 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in BMC Evolutionary Biology
- Vol. 20 (1), 1-9
- https://doi.org/10.1186/s12862-020-01704-6
Abstract
Sperm storage plays a key role in the reproductive success of many sexually-reproducing organisms, and the capacity of long-term sperm storage varies across species. While there are theoretical explanations for why such variation exists, to date there are no controlled empirical tests of the reproductive consequences of additional long-term sperm storage. While Dipterans ancestrally have three long-term sperm organs, known as the spermathecae, Drosophila contain only two. We identified a candidate gene, which we call spermathreecae (sp3), in which a disruption cause the development of three functional spermathecae rather than the usual two in Drosophila. We used this disruption to test the reproductive consequences of having an additional long-term sperm storage organ. Compared to females with two spermathecae, females with three spermathecae store a greater total number of sperm and can produce offspring a greater length of time. However, they did not produce a greater total number of offspring. Thus, additional long-term sperm storage in insects may increase female fitness through extending the range of conditions where she produces offspring, or through increasing the quality of offspring via enhanced local sperm competition at fertilization.Keywords
This publication has 41 references indexed in Scilit:
- The morphogenesis of spermathecae and spermathecal glands in Drosophila melanogasterArthropod Structure & Development, 2013
- Geneious Basic: An integrated and extendable desktop software platform for the organization and analysis of sequence dataBioinformatics, 2012
- Sperm-Storage Defects and Live Birth in Drosophila Females Lacking Spermathecal Secretory CellsPLoS Biology, 2011
- Male Drosophila melanogaster adjust ejaculate size based on female mating status, fecundity, and ageBehavioral Ecology, 2010
- Resolving Mechanisms of Competitive Fertilization Success in Drosophila melanogasterScience, 2010
- Genetic Dissociation of Ethanol Sensitivity and Memory Formation in Drosophila melanogasterGenetics, 2008
- Expression of transforming growth factor-β isoforms and their receptors in utero-vaginal junction of hen oviduct in presence or absence of resident sperm with reference to sperm storageReproduction, 2006
- Rap‐GEF/Rap signaling restricts the formation of supernumerary spermathecae in Drosophila melanogasterDevelopment, Growth & Differentiation, 2006
- The evagination of the genital imaginal discs ofDrosophila melanogasterWilhelm Roux' Archiv für Entwicklungsmechanik der Organismen, 1983
- The mitochondrial derivative of the spermatozoon of Drosophila before and after fertilizationJournal of Ultrastructure Research, 1973