Male age and strain affect ejaculate quality in the Mexican fruit fly

Herrera-Cruz, Mariana; Abraham, Solana; Nuñez-Beverido, Nicolas; Flores‐Estévez, Norma; Reyes‐Hernández, Martha; Alvarado, Mayvi; Pérez‐Staples, Diana

doi:10.1111/1744-7917.12446

Cited by 17 publications

(16 citation statements)

References 49 publications

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“…Further, old D. melanogaster males are defective at transferring SFPs despite a higher SFP abundance compared to young males ( Sepil et al, 2020 ). Protein concentration also increases with age in the accessory glands of old D. bipectinata ( Santhosh and Krishna, 2013 ) and Anastrepha ludens males ( Herrera-Cruz et al, 2018 ). However, in A. socius , an SFP that induces egg laying decreases in abundance as males age ( Marshall et al, 2009 ).…”

Section: Introductionmentioning

confidence: 99%

Male Age Influences Re-mating Incidence and Sperm Use in Females of the Dengue Vector Aedes aegypti

2021

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Diseases transmitted by female Aedes aegypti mosquitoes are public health issues in countries in the tropics and sub-tropics. As in other insects, A. aegypti females undergo behavioral and physiological changes upon mating that principally act to facilitate the production of progeny. The primary effectors of A. aegypti female post-mating responses are male-derived seminal proteins that are transferred to females during mating. Increased male age reduces ejaculate function in numerous taxa and alters seminal protein composition in Drosophila melanogaster, but the impacts of male age on female A. aegypti post-mating responses are unknown. Here, we used “old” (21–22 days old) and “young” (4–5 days old) A. aegypti males to assess the influence of male age on oviposition, fertility, and re-mating incidence in their mates. We also examined how age influenced paternity share in females initially mated to young or old males that subsequently re-mated with a transgenic male that transferred RFP-labeled sperm and whose progeny inherited a larval-expressed GFP marker. We found that increased male age had no effect on female fecundity or fertility but significantly impacted their ability to prevent re-mating in their mates—more than half (54.5%) of the females mated to an old male re-mated, compared to 24% of females initially mated to a young male. Polyandrous A. aegypti females displayed first male precedence regardless of the age of their initial mate. However, young males were better able to compete with rival male sperm, siring significantly more progeny (77%) compared to old males (64%). Young males had significantly more sperm in their seminal vesicles than old males at the time of mating, although males of both age groups transferred similar numbers of sperm to their mates. Our results suggest that male senescence differentially impacts the induction of some post-mating changes in A. aegypti females. As the effect of age may be further exacerbated in the field, age-related declines in male ability to induce sexual refractoriness have implications for A. aegypti population control programs that release adults into the environment.

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Section: Introductionmentioning

confidence: 99%

Male Age Influences Re-mating Incidence and Sperm Use in Females of the Dengue Vector Aedes aegypti

2021

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“…A possible explanation is that delayed mating may reduce the quality of male sperm, and thereby reduce egg hatching. Sperm quality can decrease with male age, which can lead to decreased ability to inseminate females [ 32 , 33 ]. We found that males can mate normally at 7 d after emergence.…”

Section: Discussionmentioning

confidence: 99%

Effects of Delayed Mating on Mating Performance and Reproductive Fitness of the Willow Leaf Beetle (Coleoptera: Chrysomelidae) under Laboratory Conditions

Zhao

Liu

Lin

et al. 2021

Insects

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Age at mating is one of the most important factors that affect mating selection, sexual performance, and fecundity. We studied the effects of mating age on the mating performance and reproductive fitness of Plagiodera versicolora Laicharting, a serious pest of poplar and willow, by measuring the time from pairing to successful mating, mating duration, fecundity, hatching probability, and female lifespan. Delayed mating of females and males significantly prolonged the time from pairing to successful mating and the mating duration, but had no effect on the duration of the egg-laying period. Delayed mating of females did not significantly affect fecundity or egg hatching, but significantly prolonged the female lifespan. Although delayed mating of males had a significant negative impact on egg hatching, it had no effect on the lifespan or fecundity of females. These results indicate that delayed mating affects the mating performance of P. versicolora, although it has a limited effect on reproductive fitness. This suggests that delayed mating is unlikely to contribute to the success of mating disruption, when applied to control P. versicolora.

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“…the cricket Allonemobius socius, Marshall et al 2009; the blue-footed booby, Kim et al 2011; the houbara bustard, Preston et al 2015) but this is not universal (for flies e.g. Santhosh & Krishna 2013, Dhole & Pfennig 2014, Herrera-Cruz et al 2018.…”

Section: Senescence Of Male Post-mating Traitsmentioning

confidence: 99%

“…Also often single measures of age-dependent changes in sperm number or morphology are not linked to fertilisation ability (for e.g. by Moller et al 2009, Gasparini et al 2014, Herrera-Cruz et al 2018. It is often implicitly assumed that age-dependent changes would result in a diminished fertilisation success; however, this is not necessarily the case as in some species like D. bipectinata and D. pseudoobscura, older males have higher reproductive success than younger males.…”

Section: Sperm and Testes Ageingmentioning

confidence: 99%

Male reproductive ageing: a tale of the whole ejaculate

Fricke

Koppik

2019

Reproduction

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Ageing is nearly ubiquitous and encompasses all biological functions. We here focus on age-dependent changes in male reproductive capacity across a broad range of animal taxa. While there has been a long-standing focus on mating ability and overall reproductive success, we here highlight the underlying mechanisms that explain loss in fertilisation capacity in ageing males. Fertilisation is mediated by not only the presence of sperm, but also the cocktail of seminal fluid proteins that ensure sperm survival, capacitation and interaction with female physiology. Sperm ageing has received much attention in studies of male reproductive senescence; however, post-mating processes include a number of interlocked steps that together cumulate in successful fertilisation. As such we consider male ability to elicit female post mating responses such as uterine conformational changes, sperm storage and ovulation and the components within the ejaculate that mediate these post-mating processes. For the latter seminal fluid proteins are key and hence we reflect on age-dependent changes in quality of the entire ejaculate and its consequences for male reproductive capacity. While first studies accrue and highlight that changes in the non-sperm fraction can explain substantial variation in senescent male reproductive success and male ability to induce post-mating responses necessary for fertilisation many open questions still remain that warrant further investigations. One being what the potential age-dependent changes in composition are or whether there is a general decline and how this interacts with sperm to affect fertilisation success. Further, the impact females might have to ameliorate these changes will be an area of interest.

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Male age and strain affect ejaculate quality in the Mexican fruit fly

Cited by 17 publications

References 49 publications

Male Age Influences Re-mating Incidence and Sperm Use in Females of the Dengue Vector Aedes aegypti

Male Age Influences Re-mating Incidence and Sperm Use in Females of the Dengue Vector Aedes aegypti

Effects of Delayed Mating on Mating Performance and Reproductive Fitness of the Willow Leaf Beetle (Coleoptera: Chrysomelidae) under Laboratory Conditions

Male reproductive ageing: a tale of the whole ejaculate

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