How Female-Female Competition Affects Male-Male Competition: Insights into Postcopulatory Sexual Selection from Socially Polyandrous Species DOI
Sara E. Lipshutz,

Samuel J Torneo,

Kimberly A. Rosvall

et al.

The American Naturalist, Journal Year: 2022, Volume and Issue: 201(3), P. 460 - 471

Published: Oct. 4, 2022

AbstractSexual selection is a major driver of trait variation, and the intensity male competition for mating opportunities has been linked with sperm size across diverse taxa. Mating among females may also shape evolution traits, but effect interplay between female-female male-male on morphology not well understood. We evaluated variation in two species socially polyandrous systems, which compete to mate multiple males. Northern jacanas (Jacana spinosa) wattled (J. jacana) vary their degree social polyandry sexual dimorphism, suggesting differences selection. compared mean variance head, midpiece, tail length breeding stages because these measures have associated competition. found that greater polyandry, northern jacana, longer midpieces tails as marginally lower intraejaculate length. Intraejaculate was significantly copulating males than incubating males, flexibility production cycle stages. Our results indicate stronger more intense by selecting less variable traits. These findings extend frameworks developed monogamous reveal be an important evolutionary force layered atop mates.

Language: Английский

Comparative analysis of mammalian sperm ultrastructure reveals relationships between sperm morphology, mitochondrial functions and motility DOI Creative Commons
Ni-Hao Gu, Wenlong Zhao,

Guishuan Wang

et al.

Reproductive Biology and Endocrinology, Journal Year: 2019, Volume and Issue: 17(1)

Published: Aug. 15, 2019

Sperm morphology mainly refers to the shape of head, length flagellar segments, including midpiece, principal piece and end piece, size accessory structures, axonemes, outer dense fibers (ODFs), mitochondrial sheath (MS) fibrous (FS). Across species, there is considerable diversity in morphology. An established theory posits that sperm flagellum, especially a critical factor influencing metabolism velocity. However, our understanding relationships between ultrastructures incomplete. The morphologies from 10 mammalian human, mouse, rat, dog, rabbit, goat, pig, bull, guinea pig golden hamster, were examined by scanning electron microscopy (SEM) transmission (TEM). According SEM TME images, heads cross-sectional areas structures flagella width measured using Image J software. variation tendencies (referred as slope) along calculated linear regression method. Mitochondrial functions commercial kits. velocities CASA three-dimensional species slopes internal obtained. axoneme tapered slightly base tip axonemes correlated negatively with variability across species. Additionally, ODFs and/or MS positively lengths total well velocities. volumes ATP content swimming Our results not only show relationship physiology but also provide sizes mitochondria new targets which study regulation

Language: Английский

Citations

121
A sex-linked supergene controls sperm morphology and swimming speed in a songbird DOI
Kang-Wook Kim,

Clair Bennison,

Nicola Hemmings

et al.

Nature Ecology & Evolution, Journal Year: 2017, Volume and Issue: 1(8), P. 1168 - 1176

Published: July 12, 2017

Language: Английский

Citations

88
Fertilization mode drives sperm length evolution across the animal tree of life DOI
Ariel F. Kahrl, Rhonda R. Snook, John L. Fitzpatrick

et al.

Nature Ecology & Evolution, Journal Year: 2021, Volume and Issue: 5(8), P. 1153 - 1164

Published: June 21, 2021

Language: Английский

Citations

56
Aromatase reduces sperm motility by down-regulating the expression of proteins related to ATP synthesis in seminal plasma extracellular vesicles DOI Creative Commons

Xuliang Luo,

Yan Guo,

Xuelian Li

et al.

BMC Genomics, Journal Year: 2025, Volume and Issue: 26(1)

Published: March 28, 2025

Aromatase, encoded by Cyp19a1, is the rate limiting enzyme in biosynthesis of estrogens, and excessive aromatase can reduce semen quality roosters. Seminal plasma extracellular vesicles (SPEV) are nanoscale that carry transmit signaling molecules, thereby affecting quality. Currently it still unclear whether SPEV involved process affects chicken. To clarify this issue, lentivirus carrying Cyp19a1 (LV-CYP19A1) for over-expression was constructed injected to testis 35-week-old Semen seminal hormone were measured, also extracted proteome sequencing performed after treatment LV-CYP19A1. The results indicated volume, fertility, sperm motility, testosterone (T) levels significantly decreased, estradiol (E2) increased LV-CYP19A1 group than those control (P < 0.05). Through proteomic analysis SPEV, we identified 966 differentially expressed proteins (DEPs) comparison group. Gene Ontology (GO) Kyoto Encyclopedia Genes Genomes (KEGG) items DEPs mainly enriched ATP synthesis coupled electron transport, flagellated regulation steroid biosynthetic process, PI3K-Akt pathway. Furthermore, 8 including ENO4, APOB, SDHA, SDHB, UQCRC1, VIN, PITGB3 FXN as key involving regulated rooster Our reveal down-regulate protein expression related metabolism, motility reducing

Language: Английский

Citations

1
A sex-chromosome inversion causes strong overdominance for sperm traits that affect siring success DOI
Ulrich Knief, Wolfgang Forstmeier, Yifan Pei

et al.

Nature Ecology & Evolution, Journal Year: 2017, Volume and Issue: 1(8), P. 1177 - 1184

Published: July 12, 2017

Language: Английский

Citations

78
Sperm head morphology is associated with sperm swimming speed: A comparative study of songbirds using electron microscopy DOI
Hanna Nyborg Støstad, Arild Johnsen, Jan T. Lifjeld

et al.

Evolution, Journal Year: 2018, Volume and Issue: 72(9), P. 1918 - 1932

Published: July 17, 2018

Sperm exhibit extraordinary levels of morphological diversification across the animal kingdom. In songbirds, sperm have a helically shaped head incorporating distinct acrosomal membrane or "helical keel," form and extent which varies species. The functional significance this helical shape, however, remains unknown. Using scanning electron microscopy, we quantified inter‐ intraspecific variation in morphology 36 songbird species (Passeriformes: Passerida). phylogenetic comparative methods, investigated relationship between both swimming speed frequency extra‐pair young (EPY). We found that whose had relatively more pronounced (i.e., long acrosome, short nucleus, wide membrane, waveform along "core") faster‐swimming sperm. no evidence interspecific EPY, although did find among‐ within‐male traits were negatively correlated with EPY. Applying principles fluid mechanics, discuss how may influence speed, suggest further studies considering aspects beyond length are needed to improve our understanding structure‐function relationships.

Language: Английский

Citations

41
Status of Sperm Functionality Assessment in Wildlife Species: From Fish to Primates DOI Creative Commons
Gerhard van der Horst

Animals, Journal Year: 2021, Volume and Issue: 11(6), P. 1491 - 1491

Published: May 21, 2021

(1) Background: in order to propagate wildlife species (covering the whole spectrum from suitable for aquaculture endangered species), it is important have a good understanding of quality their sperm, oocytes and embryos. While sperm analyses mainly used manual assessment past, such estimations are subjective largely unreliable. Accordingly, quantitative cutting-edge approaches required assess various aspects quality. The purpose this investigation was illustrate latest technology evaluation cut-off points distinguish differential grades fertility potential wide range vertebrate species. (2) Methods: computer-aided analysis (CASA) with an emphasis on motility, 3D tracking flagellar (FAST), as well morphology, vitality, acrosome status, fragmentation many other complimentary technologies. (3) Results: Assessing revealed great deal specificity. For example, freshwater fish like trout, swam typical tight helical pattern, but seawater motility more progressive. In amphibian species, velocity slow, contrast some bird (e.g., ostrich). Meanwhile, African elephant antelope fast progressive evident. most there high percentage morphologically normal generally, low percentages were observed vitality morphology evident monogamous (4) Conclusions: Sperm using methodologies CASA FAST analysis, methodologies, assisted better defining quality—specifically, functionality high-quality sperm. This approach will assist propagation

Language: Английский

Citations

30
Fertilization mode differentially impacts the evolution of vertebrate sperm components DOI Creative Commons
Ariel F. Kahrl, Rhonda R. Snook, John L. Fitzpatrick

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Nov. 10, 2022

Abstract Environmental change frequently drives morphological diversification, including at the cellular level. Transitions in environment where fertilization occurs (i.e., mode) are hypothesized to be a driver of extreme diversity sperm morphology observed animals. Yet how mode impacts evolution components—head, midpiece, and flagellum—each with different functional roles that must act as an integrated unit remains unclear. Here, we test this hypothesis by examining component lengths across 1103 species vertebrates varying (external vs. internal fertilization). Sperm length is explained part vertebrates, but influences varies among components vertebrate clades. We also identify evolutionary responses not influenced mode: midpieces evolve rapidly both external fertilizers. Fertilization thus through complex component- clade-specific responses.

Language: Английский

Citations

20
Sperm mtDNA Copy Number Is Not Associated With Midpiece Size Among Songbirds DOI Creative Commons
Laima Bagdonaitė, Quentin Mauvisseau, Arild Johnsen

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(3)

Published: March 1, 2025

ABSTRACT Tremendous variation in sperm morphology is observed across the animal kingdom. Within avian taxa, songbirds (infraorder Passerides) have largest morphology. Their spermatozoa move by using energy generated midpiece, which formed multiple mitochondria fusing together during spermatogenesis. However, very little known regarding number of required to form songbird midpiece. Based on previous research showing an association midpiece length and mitochondrial DNA (mtDNA) copy zebra finch Taeniopygia guttata , we hypothesize that species with longer midpieces more copies mtDNA. We estimated mtDNA 19 from 10 families within Passerides, covering a broad range sizes. Mitochondrial nuclear abundance were determined droplet digital PCR (ddPCR) ratio between single‐copy genes was used estimate per spermatozoon. found differ their average number, but small not significantly related length. A possible explanation genomes are eliminated spermatids

Language: Английский

Citations

0
Trade-off between carotenoid-based sexual ornamentation and sperm resistance to oxidative challenge DOI Open Access
Oldřich Tomášek, Jana Albrechtová,

Martina Němcová

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2017, Volume and Issue: 284(1847), P. 20162444 - 20162444

Published: Jan. 25, 2017

It has been hypothesized that carotenoid-based sexual ornamentation signals male fertility and sperm competitive ability as both traits may be co-affected by oxidative stress, resulting in positive covariation (the ‘redox-based phenotype-linked hypothesis’; redox-based PLFH). On the other hand, ‘sperm competition theory’ (SCT) predicts a trade-off between precopulatory postcopulatory traits. Here, we manipulate status (using diquat dibromide) carotenoid availability adult zebra finch ( Taeniopygia guttata ) males order to test whether beak signals, or is traded off against, resistance challenge. Initial colouration, but not its change during experiment, was associated with effect of challenge on velocity, such more intense colouration predicted an increase velocity under control conditions decline This suggests long-term ornament expression Shortening midpiece following further redox homeostasis constrain morphometry. Carotenoid supplementation resulted fewer abnormalities had no Overall, our data PLFH, partially support SCT highlight importance carotenoids for normal morphology.

Language: Английский

Citations

26