Male Genotype Affects Female Longevity in Drosophila Melanogaster

Sawby, Ryan; Hughes, Kimberly A.

doi:10.1554/0014-3820(2001)055[0834:mgafli]2.0.co;2

Cited by 26 publications

(13 citation statements)

References 32 publications

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“…When assaying P2 in D. pseudoobscura, Turner & Anderson (1984) found that first male genotype was a significant factor in determining P2 while second male genotype was not. If stronger selection on P1 than P2 is a more general phenomenon, and if the mechanisms underlying P1 and P2 are at least partially independent, as appears to be the case (Clark et al 1995;Civetta & Clark 2000;Sawby & Hughes 2001), we might expect P1 to be less variable than P2 in the changing environment of an ageing female reproductive tract.…”

Section: Discussionmentioning

confidence: 96%

Female age and sperm competition: last-male precedence declines as female age increases

Mack

Priest

Promislow

2003

Proc. R. Soc. Lond. B

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Until very recently, most studies of sperm competition have focused on variation in male competitive ability. However, we now know that a number of reproductive traits, including oviposition rate, use of stored sperm and receptivity to mating, vary with female condition. Because females can play an active part in the movement of sperm within their reproductive tract, sperm competition may be influenced by female condition. Existing studies of sperm competition in fruitflies ignore the effects of female condition, using females that are 3-4 days old and in their reproductive prime. But condition will decline as a female senesces. Here, we examine the effect of female age on the outcome of sperm competition in three strains of the fruitfly, Drosophila melanogaster. Previous studies have shown that female age influences preference for mates and male ejaculation strategies. In this study, we find that when males are mated to females that are older than 17 days, last-male sperm precedence decreases significantly. These results could lead to a greater understanding of the physiological mechanisms that regulate the outcome of sperm competition.

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Section: Discussionmentioning

confidence: 96%

Female age and sperm competition: last-male precedence declines as female age increases

Mack

Priest

Promislow

2003

Proc. R. Soc. Lond. B

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“…Populations, as simple as laboratory island populations [8], have been found to harbor significant amount of genetic variation with respect to male’s ability to cause such mate-harm [47,48]. A number of previous studies have reported the selection response of mate-harm [22,24,25,28,43].…”

Section: Discussionmentioning

confidence: 99%

Evolution of mate-harm, longevity and behaviour in male fruit flies subjected to different levels of interlocus conflict

et al. 2013

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BackgroundInterlocus conflict predicts (a) evolution of traits, beneficial to males but detrimental to females and (b) evolution of aging and life-span under the influence of the cost of bearing these traits. However, there are very few empirical investigations shedding light on these predictions. Those that do address these issues, mostly reported response of male reproductive traits or the lack of it and do not address the life-history consequence of such evolution. Here, we test both the above mentioned predictions using experimental evolution on replicate populations of Drosophila melanogaster. We present responses observed after >45 generations of altered levels of interlocus conflict (generated by varying the operational sex ratio).ResultsMales from the male biased (high conflict, M-regime) regime evolved higher spontaneous locomotor activity and courtship frequency. Females exposed to these males were found to have higher mortality rate. Males from the female biased regime (low conflict, F-regime) did not evolve altered courtship frequency and activity. However, progeny production of females continuously exposed to F-males was significantly higher than the progeny production of females exposed to M-males indicating that the F-males are relatively benign towards their mates. We found that males from male biased regime lived shorter compared to males from the female biased regime.ConclusionF-males (evolving under lower levels of sexual conflict) evolved decreased mate harming ability indicating the cost of maintenance of the suit of traits that cause mate-harm. The M-males (evolving under higher levels sexual conflict) caused higher female mortality indicating that they had evolved increased mate harming ability, possibly as a by product of increased reproduction related activity. There was a correlated evolution of life-history of the M and F-males. M-regime males lived shorter compared to the males from F-regime, possibly due to the cost of investing more in reproductive traits. In combination, these results suggest that male reproductive traits and life-history traits can evolve in response to the altered levels of interlocus sexual conflict.

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“…3500 adults per generation), wild-type population Ives (hereafter 'IV'), which has been cultured under standardized conditions for hundreds of generations ( [15]; electronic supplementary material). This population harbours considerable genetic variation for many traits, and has been used in a wide range of behavioural ecology and population genetics studies [5,16,21]. The population is cultured on a non-overlapping twoweek schedule, in which they are combined en masse every 14 days and distributed onto fresh media.…”

Section: Methodsmentioning

confidence: 99%

Genetic variation in male-induced harm in Drosophila melanogaster

Filice¹,

Long²

2016

Biol. Lett.

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In Drosophila melanogaster, prolonged exposure to males reduces the longevity and fecundity of females. This harm arises from the effects of male courtship behaviours and the toxic side effects of the accessory gland proteins (Acps) in their seminal fluids. Here, we examine the relationship between male exposure and its harmful effect on the lifetime fitness of his mates, and quantify the genetic basis for this variation. We found significant additive genetic variation in the magnitude of harm that males impose on females by exposing females to males from a variety of hemiclonal backgrounds for either a brief or prolonged period of time and measuring their fecundity, a meaningful fitness index. Furthermore, we discovered a strong negative correlation between the magnitude of harm and the short-term effects of male exposure on female fitness. We discuss the evolutionary significance of these results with regards to potential life-history trade-offs in females, and its relationship to male body size.

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Male Genotype Affects Female Longevity in Drosophila Melanogaster

Cited by 26 publications

References 32 publications

Female age and sperm competition: last-male precedence declines as female age increases

Female age and sperm competition: last-male precedence declines as female age increases

Evolution of mate-harm, longevity and behaviour in male fruit flies subjected to different levels of interlocus conflict

Genetic variation in male-induced harm in Drosophila melanogaster

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