The timing of the sperm effect on female Drosophila melanogaster receptivity

Scott, David E.

doi:10.1016/s0003-3472(87)80219-1

Cited by 40 publications

(14 citation statements)

References 20 publications

(30 reference statements)

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“…During the first 24 h after mating, there is an initial 'copulation effect' which is believed to be independent of stored sperm and generally inhibits at least two thirds of females from remating in this interval (Fuerst, Pendelbury & Kidwell, 1973). Subsequent inhibition is by a 'sperm effect', which is described as a function of sperm use in the female and generally renders her completely unreceptive to remating for several days (Scott, 1987). Comparisons of females mated to wildtype versus Est6 null males indicate that paternal EST6 contributes to the remating inhibition during the first ('copulation effect') phase, but actually tends to alleviate remating inhibition in the second ('sperm effect') phase (Gilbert, Richmond & Sheehan, 1981;Gilbert & Richmond, 1982;Scott, 1986;1987;.…”

Section: Discussionmentioning

confidence: 99%

“…Subsequent inhibition is by a 'sperm effect', which is described as a function of sperm use in the female and generally renders her completely unreceptive to remating for several days (Scott, 1987). Comparisons of females mated to wildtype versus Est6 null males indicate that paternal EST6 contributes to the remating inhibition during the first ('copulation effect') phase, but actually tends to alleviate remating inhibition in the second ('sperm effect') phase (Gilbert, Richmond & Sheehan, 1981;Gilbert & Richmond, 1982;Scott, 1986;1987;. Our observation that EST6 activity varia-tion within the wild-typerange is negatively associated with remating frequency in the first eleven hours after first mating is thus consistent with the results of the wild-type and null comparisons for the corresponding period.…”

Section: Discussionmentioning

confidence: 99%

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Associations of esterase 6 allozyme and activity variation with reproductive fitness inDrosophila melanogaster

et al. 1994

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Previous studies have shown that the esterase 6 (EST6) enzyme of D. melanogaster is mainly produced in the sperm ejaculatory duct of the adult male and comparisons of wild-type males with laboratory null mutants have suggested that the enzyme plays a role in reproductive fitness. In this study we have compared 18 field-derived lines each isoallelic for Est6 for differences in five components of male reproductive fitness. No consistent fitness differences were found among lines differing in respect of the two major allozyme classes EST6-F and EST6-S, despite other evidence that these two classes are not selectively equivalent in the field. However, differences in reproductive fitness were found among lines differing in the minor mobility variants that segregate within EST6-F and EST6-S. A failure to distinguish among these minor forms may explain the discrepancies in previous studies on the effects of the major EST6 allozymes on reproductive fitness. The most significant associations we have found between EST6 and reproductive fitness were due to variation in EST6 activity levels. Male EST6 activity levels were found to be positively correlated with their time to first mating, negatively correlated with the numbers of eggs laid and progeny produced by their mates, and negatively correlated with the frequency with which their mates remate. We conclude that some EST6 variants differ in components of male reproductive fitness operative in laboratory cultures. However, the evidence for fitness differences is stronger for variants affecting the amount, rather than the structure of the enzyme, and the direction of the differences varies between some of the fitness components tested.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Associations of esterase 6 allozyme and activity variation with reproductive fitness inDrosophila melanogaster

et al. 1994

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“…Preliminary experiments gauged the ability of the irradiated, brooded males to reduce the receptivity of females after mating. The rapid decline in receptivity after mating is apparent for one to two days following mating (Manning 1962;Scott 1987). This effect is mediated, at least in part, by the sex-peptide that is produced in the male accessory glands (Chen et al 1988;Schmidt et al 1993).…”

Section: Spermless Malesmentioning

confidence: 99%

“…Second, males can pass receptivity-inhibiting substances (RISs). In D. melanogaster, the sex-peptide inhibits receptivity for between one day and two days (Scott 1987;Chen et al 1988) and the RIS function of the sex-peptide is thought to share the same target as the FES function (Schmidt et al 1993). Third, males may be able to delay remating by causing more sperm to be stored.…”

Section: Copulation Durationmentioning

confidence: 99%

Why It Is Difficult to Model Sperm Displacement in Drosophila Melanogaster: The Relation Between Sperm Transfer and Copulation Duration

2000

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Abstract. We have investigated the effects of experimental manipulation of copulation duration on sperm displacement in Drosophila melanogaster. Both spermless and normal males were used as second (displacing) males in the experiments. Displacement induced in the absence of sperm, that is, by males that pass accessory gland fluid alone, was a relatively inefficient process and produced much lower levels of displacement than normal males. Therefore, the presence of second-male sperm is necessary (but unlikely sufficient) for the high levels of displacement commonly observed in D. melanogaster. Furthermore, when second matings were interrupted at various times after the initiation of copulation, the distribution of displacement was strongly bimodal. We conclude that sperm transfer is relatively rapid, beginning shortly after the initiation of copulation, and is essentially complete before the midpoint of copulation. Therefore, sperm transfer bears no simple relation to copulation duration. Because it would be difficult to manipulate the numbers of sperm transferred by manipulating copulation duration, methods used to study sperm displacement in other insect species are unlikely to be appropriate for D. melanogaster. We also investigated why males mate for more than twice the duration that appears to be necessary to complete sperm transfer. Experimental interruption of first matings indicated that the extra copulation time serves to delay female remating, rather than to increase that rate at which of offspring are sired before remating.

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“…This effect is generally referred to as sperm dependence of remating. Sperm effects on female receptivity to remating do not appear until about 8-10 h after mating and become maximally inhibitory by about 12 h (Scott, 1987). Stored sperm can remain viable for at least 3 weeks, and the inhibitory effect of stored sperm on remating has been shown to last for 1-2 weeks (Manning, 1962;Hihara, 1981).…”

Section: Introductionmentioning

confidence: 99%

Genetic variation in “first” male effects on egg laying and remating by femaleDrosophila melanogaster

Service¹,

Vossbrink²

1996

Behav Genet

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Male Drosophila melanogaster from lines artificially selected to have divergent life histories were tested to determine if they differed in their effects on female reproductive behavior. During the first 5 days after mating, males from short-generation populations caused females to lay eggs at a faster rate than did males from long-generation populations. This faster oviposition rate resulted in greater numbers of adult progeny produced by short-generation males. During the period 6-21 days after mating, long-generation males fathered more adult progeny. Females that were first mated to short-generation males were more likely to remate than were females first mated to long-generation males. Rematings were interrupted in order to prevent transfer of second-male accessory fluid and sperm. Females that were first mated to long-generation males produced more progeny after interrupted matings than did females that were first mated to short-generation males.

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The timing of the sperm effect on female Drosophila melanogaster receptivity

Cited by 40 publications

References 20 publications

Associations of esterase 6 allozyme and activity variation with reproductive fitness inDrosophila melanogaster

Associations of esterase 6 allozyme and activity variation with reproductive fitness inDrosophila melanogaster

Why It Is Difficult to Model Sperm Displacement in Drosophila Melanogaster: The Relation Between Sperm Transfer and Copulation Duration

Genetic variation in “first” male effects on egg laying and remating by femaleDrosophila melanogaster

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