Costs and benefits of giant sperm and sperm storage organs in Drosophila melanogaster

@article{Zajitschek2019CostsAB,
  title={Costs and benefits of giant sperm and sperm storage organs in Drosophila melanogaster},
  author={Susanne R. K. Zajitschek and Felix Zajitschek and Sarah Josway and Reem Q. Al Shabeeb and Halli S Weiner and Mollie K. Manier},
  journal={bioRxiv},
  year={2019}
}
In the Drosophila lineage, both sperm and the primary female sperm storage organ, the seminal receptacle (SR), may reach extraordinary lengths. In D. melanogaster, long SRs bias fertilization toward long sperm during the displacement stage of sperm competition. This sperm-SR interaction, together with a genetic correlation between the traits, suggests that the coevolution of exaggerated sperm and SR lengths may be driven by Fisherian runaway selection. To further understand the costs and… 

Genetic coordination of sperm morphology and seminal fluid proteins promotes male reproductive success in Drosophila melanogaster

It is found that multiple components of the ejaculate coordinate to promote male reproductive success at different stages of reproduction, but the realized fitness advantages in sperm competition are uncertain.

A novel role for Eip74EF in male reproduction in promoting sperm elongation and male fecundity

A novel function of Eip74EF in spermatogenesis is documented and it is demonstrated that this gene influences both male and female reproductive success, as well as opposing effects on fecundity in males and females.

A putative novel role for Eip74EF in male reproduction in promoting sperm elongation at the cost of male fecundity.

A novel function of Eip74EF in spermatogenesis is suggested and it is demonstrated that this gene influences both male and female reproductive success, as well as speculate on possible roles for E74A in sPermatogenesis and male reproductive success.

Selecting on age of female reproduction affects lifespan in both sexes and age-dependent reproductive effort in female (but not male) Ceratitis cosyra

The results show that the timing of reproduction can evolve independently across the sexes, highlighting the importance of studying both females and males and of considering the trade-off between reproduction and lifespan in both sexes.

References

SHOWING 1-10 OF 100 REFERENCES

Influence of developmental environment on male‐ and female‐mediated sperm precedence in Drosophila melanogaster

There was striking co‐variation in sperm and SR length and the developmental environment of both females and second males, but not first males, significantly contributed to variation in male competitive fertilization success.

Resolving Mechanisms of Competitive Fertilization Success in Drosophila melanogaster

Sperm showed more mobility within the female storage organs than expected, with those from the most recent copulation displacing sperm from previous males; however, sperm viability remained consistent over long-term storage and each male's sperm was equally competitive in fertilizing the female's eggs.

Functional significance of seminal receptacle length in Drosophila melanogaster

Receptacle length did not alter the pattern of sperm precedence, which is consistent with data on the co‐evolution of sperm and female receptacle length, and a pattern of differential male fertilization success being principally determined by the interaction between these male and female traits.

MECHANISMS UNDERLYING THE SPERM QUALITY ADVANTAGE IN DROSOPHILA MELANOGASTER

It is empirically demonstrate for Drosophila melanogaster that both sperm quality and sperm quantity independently contribute to competitive male fertilization success, and exemplify that primary sex cells can bear secondary sexual straits.

Sperm-Female Coevolution in Drosophila

Using populations of Drosophila melanogaster selected for divergent sperm length or female sperm-storage organ length, experimentally show that male fertilization success is determined by an interaction between sperm and female morphology.

RAPID DIVERSIFICATION OF SPERM PRECEDENCE TRAITS AND PROCESSES AMONG THREE SIBLING DROSOPHILA SPECIES

These species differences are evaluated in light of concurrent investigations of within‐population variation in competitive fertilization success and postmating/prezygotic reproductive isolation in hybrid matings between species to forge an understanding of the relationship between microevolutionary processes and macroevolutionARY patterns as pertains to postcopulatory sexual selection in this group.

EVOLUTION OF MULTIPLE KINDS OF FEMALE SPERM‐STORAGE ORGANS IN DROSOPHILA

The macroevolutionary pattern of organ dysfunction and morphological divergence suggests that ancestrally both kinds of organs stored sperm, and data indicate that the seminal receptacle is the primary sperm‐storage organ in Drosophila.

Investment in Testes and the Cost of Making Long Sperm in Drosophila

Results are discussed in terms of the costs of producing longer sperm, the correlated evolution of sperm length and body size, the relationship between breeding system and sperm production patterns, and the nature of differences between vertebrates and invertebrates in sperm production and the size of testes.

Delayed male maturity is a cost of producing large sperm in Drosophila.

Results suggest that delayed male maturity is a cost of producing long sperm, and a possible physiological mechanism to explain the observed relationship is discussed.
...