The evolution of sex peptide: sexual conflict, cooperation, and coevolution

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2022, Volume and Issue: 97(4), P. 1426 - 1448

Published: March 6, 2022

ABSTRACT A central paradigm in evolutionary biology is that the fundamental divergence fitness interests of sexes (‘sexual conflict’) can lead to both evolution sex‐specific traits reduce for individuals opposite sex, and sexually antagonistic coevolution between sexes. However, clear examples evolved this way – where a single trait one sex demonstrably depresses members resulting are rare. The Drosophila seminal protein ‘sex peptide’ (SP) perhaps most widely cited example appears harm females while benefitting males. Transferred ejaculate by males during mating, SP triggers profound wide‐ranging changes female behaviour physiology. Early studies reported transfer enhances male depressing fitness, providing foundations widespread view has manipulate benefit. Here, we argue ( i ) simplification wider body contradictory empirical research, ii narrow with respect theory describing origin maintenance selected traits, iii hard reconcile what know history SP's effects on females. We begin charting thought regarding SP, at proximate (its production, function, mechanism action) ultimate consequences history) levels, reviewing how were development field sexual conflict. describe prevailing evolution: originated continues evolve In contrast view, three grounds weight evidence does not support receipt decreases fitness: results from impact mixed more often neutral or positive, costs emerging only under nutritional extremes; whether appreciable wild‐living populations remains untested; recently described confounds genetic manipulations raise possibility measures benefits have been distorted. Beyond effects, comparative data also difficult square idea suffer SP. Instead, these functional genetics neural circuitry responses suggest an involving dedicated SP‐sensing apparatus reproductive tract likely because it females, rather than harms them. end exploring functioning as signal quality sperm storage (or both). expanded outline recognises context‐dependent fluctuating roles played cooperative selection traits.

Language: Английский

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The life history of Drosophila sperm involves molecular continuity between male and female reproductive tracts

Proceedings of the National Academy of Sciences, Journal Year: 2022, Volume and Issue: 119(11)

Published: March 7, 2022

SignificanceIn species with internal fertilization, sperm spend an important part of their lives within the female. To examine life history during this time, we used semiquantitative proteomics and sex-specific isotopic labeling in fruit flies to determine extent molecular continuity between male female reproductive tracts provide a global catalog sperm-associated proteins. Multiple seminal fluid proteins associate immediately after mating. Few remain long-term storage, whereas female-derived constitute one-fifth postmating proteome by then. Our data reveal "hand-off" from males females, which postulate be component sperm-female interactions.

Language: Английский

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Physiological factors influencing female fertility in birds

Royal Society Open Science, Journal Year: 2021, Volume and Issue: 8(7), P. 202274 - 202274

Published: July 1, 2021

Fertility is fundamental to reproductive success, but not all copulation attempts result in a fertilized embryo. Fertilization failure especially costly for females, we still lack clear understanding of the causes variation female fertility across taxa. Birds make useful model system research, partly because their large eggs are easily studied outside female's body, also wealth data available on productivity commercial birds. Here, review factors contributing infertility birds, providing evidence that traits understudied relative male traits, and avian research has been dominated by studies focused Galliformes captive (relative wild) populations. We then discuss key stages cycle where may be compromised, recommendations future research. particularly emphasize must differentiate between embryo mortality as hatching failure, non-breeding individuals should monitored more routinely possible. This lays groundwork developing clearer infertility, with important consequences multiple fields including science, conservation breeding.

Language: Английский

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The coevolutionary dynamics of cryptic female choice

Evolution Letters, Journal Year: 2023, Volume and Issue: 7(4), P. 191 - 202

Published: June 7, 2023

In contrast to sexual selection on traits that affect interactions between the sexes before mating, little theoretical research has focused coevolution of postmating via cryptic female choice (when females bias fertilization toward specific males). We used simulation models ask (a) whether and, if so, how nondirectional (female-by-male in success) causes deviations from focus exclusively male-mediated processes, and (b) risk sperm competition, strength choice, tradeoffs number interact influence coevolutionary dynamics traits. found incorporating can result males investing much less their ejaculates than predicted by with competition only. also resulted evolution genetic correlations traits, even when was weak, low. This suggests may be important systems low multiple mating. These increased as increased. When high, extreme codivergence preference occurred trait traded off number. male lagged behind traits; this lag decreased increasing competition. Overall, our results suggest deserves more attention theoretically driving ways just beginning explored.

Language: Английский

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Synthesis and Scope of the Role of Postmating Prezygotic Isolation in Speciation

Cold Spring Harbor Perspectives in Biology, Journal Year: 2023, Volume and Issue: 16(10), P. a041429 - a041429

Published: Dec. 27, 2023

How barriers to gene flow arise and are maintained key questions in evolutionary biology. Speciation research has mainly focused on that occur either before mating or after zygote formation. In comparison, postmating prezygotic (PMPZ) isolation-a barrier acts gamete release but formation-is less frequently investigated may hold a unique role generating biodiversity. Here we discuss the distinctive features of PMPZ isolation, including primary drivers molecular mechanisms underpinning isolation. We then present first comprehensive survey isolation research, revealing it is widespread form across eukaryotes. The also exposes obstacles studying part attributable challenges involved directly measuring uncovering its causal mechanisms. Finally, identify outstanding knowledge gaps provide recommendations for improving future This will allow us better understand nature this often-neglected reproductive contribution speciation.

Language: Английский

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Plastic responses in sperm expenditure to sperm competition risk in black soldier fly (Hermetia illucens, Diptera) males

Journal of Insect Physiology, Journal Year: 2025, Volume and Issue: 161, P. 104751 - 104751

Published: Jan. 30, 2025

Language: Английский

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Warm waters undermine cryptic female choice

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Abstract Reproduction is often more thermally sensitive than survival. Thus, understanding the thermal sensitivity of reproductive interactions crucial given global warming. However, it unknown how temperature influences female control over fertilization after mating ( i.e., cryptic choice). We tested temperatures relevant to current conditions and climate change projections influence choice in a marine fish, Symphodus ocellatus . Under typical conditions, females bias dynamics favor dominant males. find that warmer decrease on sperm velocity reduce expected paternity Our results demonstrate can shift balance between mate male-male competition. may sexual selection, leading evolutionary changes traits.

Language: Английский

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Condition‐dependent interaction between mating success and competitive fertilization success in Drosophila melanogaster*

Evolution, Journal Year: 2021, Volume and Issue: 75(8), P. 2014 - 2026

Published: April 9, 2021

Dietary restriction during development can affect adult body size and condition. In many species, larger (high-condition) males gain higher mating success through male-male competition female choice, condition the extent of both mate choice male investment in courtship or ejaculates. However, few studies have examined joint effects interplay pre- postcopulatory phases sexual selection. We therefore manipulated larval diet Drosophila melanogaster to study how variation sexes biases competitive outcomes at different reproductive stages, from paternity. did not find a difference preference latency between females conditions, nor any interaction conditions. large were more successful gaining matings, but only when direct competition, whereas latencies shorter for low-condition noncompetitive settings. Small also transferred sperm nonvirgin females, displaced proportion resident sperm, achieved paternity shares per than males. agreement with existing theory, we suggest that small might partially compensate their low by strategically investing numbers potentially other, unmeasured ejaculate traits, they do opportunity.

Language: Английский

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Drosophila female reproductive glands contribute to mating plug composition and the timing of sperm ejection

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2022, Volume and Issue: 289(1968)

Published: Feb. 2, 2022

Reproductive traits that influence female remating and competitive fertilization rapidly evolve in response to sexual selection conflict. One such trait, observed across diverse animal taxa, is the formation of a structural plug inside reproductive tract (FRT), either during or shortly after mating. In

Language: Английский

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The centrosome – diverse functions in fertilization and development across species

Journal of Cell Science, Journal Year: 2023, Volume and Issue: 136(23)

Published: Dec. 1, 2023

ABSTRACT The centrosome is a non-membrane-bound organelle that conserved across most animal cells and serves various functions throughout the cell cycle. In dividing cells, known as spindle pole nucleates robust microtubule to separate genetic material equally into two daughter cells. non-dividing mother centriole, substructure of centrosome, matures basal body cilia, which acts signal-transducing antenna. centrosomes their substructures are important for embryonic development have been studied extensively using in vitro mammalian culture or vivo invertebrate models. However, there considerable differences composition during different aspects vertebrate development, these less studied. this Review, we discuss roles played by centrosomes, highlighting divergent features species, particularly fertilization development.

Language: Английский

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