Larval rearing environment affects several post-copulatory traits in
            <i>Drosophila melanogaster</i>

McGraw, Lisa A.; Fiumera, Anthony C.; Ramakrishnan, Meera; Madhavarapu, Swetha; Clark, Andrew G.; Wolfner, Mariana F.

doi:10.1098/rsbl.2007.0334

Cited by 95 publications

(136 citation statements)

References 13 publications

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“…There are many possible explanations for the difference in findings across studies. First, environmental conditions can have a very large effect on egg laying rates (McGraw et al 2007;Fricke et al 2010), and it is almost certain the conditions of our study differed from those of the earlier study. Second, the experimental design we employed involved egg counts only on the first 2 days after the first mating, whereas the study reported egg counts over a longer period.…”

Section: Discussioncontrasting

confidence: 54%

The Genetic Basis for Male × Female Interactions Underlying Variation in Reproductive Phenotypes of Drosophila

2010

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In Drosophila, where females mate multiply, sperm competition contributes strongly to fitness variability among males. Males transfer ''Acp'' seminal proteins to females during mating, and these proteins influence the outcome of sperm competition. Because Acps function within the female, male proteins can directly interact with female molecules in a manner that affects reproductive fitness. Here we begin to dissect the genetic architecture of male 3 female interactions underlying reproductive phenotypes important to sperm competition. By utilizing chromosome extraction lines, we demonstrate that the third and X chromosomes each have large effects on fertility phenotypes, female remating rate, and the sperm competition parameter, P1. Strikingly, the third and X chromosomes harbor genetic variation that gives rise to strong male 3 female interactions that modulate female remating rate and P1. Encoded on these chromosomes are, respectively, sex peptide (SP) and sex peptide receptor (SPR), the only pair of physically interacting male Acp and female receptor known. We identified several intriguing allelic interactions between SP and SPR. The results of this study begin to elucidate the complex genetic architecture of reproductive and sperm competition phenotypes and have significant implications for the evolution of male and female characters.

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Section: Discussioncontrasting

confidence: 54%

The Genetic Basis for Male × Female Interactions Underlying Variation in Reproductive Phenotypes of Drosophila

2010

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“…Although it seems unlikely that subtle food batch differences or even relatively large variation in larval density are the cause (McGraw et al 2007), these results do point to both a strong genetic and environmental component to sperm competitive ability and highlight the complex nature of these phenotypes.…”

Section: Discussionmentioning

confidence: 77%

A Role for Acp29AB, a Predicted Seminal Fluid Lectin, in Female Sperm Storage inDrosophila melanogaster

et al. 2008

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Females of many animal species store sperm for taxon-specific periods of time, ranging from a few hours to years. Female sperm storage has important reproductive and evolutionary consequences, yet relatively little is known of its molecular basis. Here, we report the isolation of a loss-of-function mutation of the Drosophila melanogaster Acp29AB gene, which encodes a seminal fluid protein that is transferred from males to females during mating. Using this mutant, we show that Acp29AB is required for the normal maintenance of sperm in storage. Consistent with this role, Acp29AB localizes to female sperm storage organs following mating, although it does not appear to associate tightly with sperm. Acp29AB is a predicted lectin, suggesting that sugar-protein interactions may be important for D. melanogaster sperm storage, much as they are in many mammals. Previous association studies have found an effect of Acp29AB genotype on a male's sperm competitive ability; our findings suggest that effects on sperm storage may underlie these differences in sperm competition. Moreover, Acp29AB's effects on sperm storage and sperm competition may explain previously documented evidence for positive selection on the Acp29AB locus.

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“…Empirical studies involving experimental manipulations of condition generally support this prediction, reporting that highcondition males produce larger ejaculates (Gwynne 1990;Delisle & Bouchard 1995;Watanabe & Hirota 1999;Jia et al 2000;Ferkau & Fisher 2006;Lewis & Wedell 2007;Blanco et al 2009; but see Wedell 1993), transfer more sperm (Fedina & Lewis 2006;McGraw et al 2007;Perez-Staples et al 2008), and produce more ejaculate-derived nuptial gifts (Jia et al 2000; but see Wedell 1993).…”

Section: Introductionmentioning

confidence: 72%

Condition-dependent ejaculate size and composition in a ladybird beetle

Perry

Rowe

2010

Proc. R. Soc. B.

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Sexually selected male ejaculate traits are expected to depend on the resource state of males. Theory predicts that males in good condition will produce larger ejaculates, but that ejaculate composition will depend on the relative production costs of ejaculate components and the risk of sperm competition experienced by low-and high-condition males. Under some conditions, when low condition leads to poorer performance in sperm competition, males in low condition may produce ejaculates with higher sperm content relative to their total ejaculate and may even transfer more sperm than high-condition males in an absolute sense. Previous studies in insects have shown that males in good condition transfer larger ejaculates or more sperm, but it has not been clear whether increased sperm content represents a shift in allocation or simply a larger ejaculate, and thus the condition dependence of ejaculate composition has been largely untested. We examined condition dependence in ejaculate by manipulating adult male condition in a ladybird beetle (Adalia bipunctata) in which males transfer three distinct ejaculate components during mating: sperm, non-sperm ejaculate retained within the female reproductive tract, and a spermatophore capsule that females eject and ingest following mating. We found that high condition males indeed transferred larger ejaculates, potentially achieved by an increased rate of ejaculate transfer, and allocated less to sperm compared with low-condition males. Low-condition males transferred ejaculates with absolutely and proportionally more sperm. This study provides the first experimental evidence for a condition-dependent shift in ejaculate composition.

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Larval rearing environment affects several post-copulatory traits in Drosophila melanogaster

Cited by 95 publications

References 13 publications

The Genetic Basis for Male × Female Interactions Underlying Variation in Reproductive Phenotypes of Drosophila

The Genetic Basis for Male × Female Interactions Underlying Variation in Reproductive Phenotypes of Drosophila

A Role for Acp29AB, a Predicted Seminal Fluid Lectin, in Female Sperm Storage inDrosophila melanogaster

Condition-dependent ejaculate size and composition in a ladybird beetle

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