Measuring Pre- and Post-Copulatory Sexual Selection and Their Interaction in Socially Monogamous Species with Extra-Pair Paternity DOI Creative Commons
Emily R. A. Cramer

Cells, Journal Year: 2021, Volume and Issue: 10(3), P. 620 - 620

Published: March 11, 2021

When females copulate with multiple males, pre- and post-copulatory sexual selection may interact synergistically or in opposition. Studying this interaction wild populations is complex potentially biased, because copulation fertilization success are often inferred from offspring parentage rather than being directly measured. Here, I simulated 15 species of socially monogamous birds varying levels extra-pair paternity, where could independently cause a male secondary trait to improve success, sperm success. By the degree correlation between traits, show that several common statistical approaches, including univariate gradients paired t-tests comparing males within-pair they cuckolded, can give highly biased results for traits. These tests should therefore be avoided traits unless known uncorrelated trait(s) impacting In contrast, multivariate analysis regression proportion brood(s) sired on (including only broods ≥1 offspring) were unbiased, appear likely unbiased under broad range conditions mating system. addition, investigated whether occurrence pre-copulatory impacted strength selection, vice versa. found no evidence an simulated, Instead, direct each was independent other selection. Although independent, two positively correlated across both increased frequency copulations these species.

Language: Английский

Superb fairy-wrens: Making the worst of a good job DOI
Andrew Cockburn, Lyanne Brouwer, Nicolas Margraf

et al.

Cambridge University Press eBooks, Journal Year: 2015, Volume and Issue: unknown, P. 133 - 149

Published: Dec. 18, 2015

A summary is not available for this content so a preview has been provided. Please use the Get access link above information on how to content.

Language: Английский

Citations

21
Directional postcopulatory sexual selection is associated with female sperm storage in Trinidadian guppies DOI
Alessandro Devigili, Andrea Di Nisio, Alessandro Grapputo

et al.

Evolution, Journal Year: 2016, Volume and Issue: 70(8), P. 1829 - 1843

Published: June 27, 2016

Female sperm storage (FSS) is taxonomically widespread and often associated with intense competition, yet its consequences on postcopulatory sexual selection (PCSS) are poorly known. Theory predicts that FSS will reduce the strength of PCSS, because characteristics favored before after may be traded-off, opportunities for nondirectional PCSS should increase. We explored these questions in guppy (Poecilia reticulata), by allowing females to mate multiply comparing paternity pattern two successive broods. Contrary predictions, variance male fertilization success increased FSS, driven a change share across This was positively velocity (measured FSS) but not duration indirectly suggesting faster were better entering female organs, rather than persisting within them. Other traits, such as size orange color, heterozygosity, relatedness female, did influence FSS. These results indicate processes tend reinforce guppies, weaken it. Further work necessary test whether this changes case more prolonged

Language: Английский

Citations

19
Extra-pair paternity, sperm competition and their evolutionary consequences in the Maluridae DOI
Melissah Rowe, Stephen Pruett‐Jones

Emu - Austral Ornithology, Journal Year: 2013, Volume and Issue: 113(3), P. 218 - 231

Published: Aug. 15, 2013

Fairy-wrens (Malurus) are socially monogamous and yet exhibit among the highest rates of extra-pair paternity (EPP) known in passerine birds. Here, we review patterns EPP fairy-wrens their allies (Maluridae), discuss causes evolutionary consequences multiple mating this group. Rates vary widely across species, but correlate strongly with relative testes mass suggesting that can be used as a proxy for comparative studies. With respect to variation EPP, there appear consistent habitat differences between subfamilies Maluridae may contribute observed inter-specific specific requirements some species influence Malurus. Within however, is equivocal evidence role group size influencing EPP. Regardless available suggests female benefit from matings through indirect genetic benefits, such inbreeding avoidance choice high-quality males (i.e. good genes). Using Bayesian modelling, show ancestral state Australian malurids one low sperm competition, that, general, increased levels competition (and hence EPP) derived condition family. Given broad range family relationship suggest model system studies competition.

Language: Английский

Citations

19
No evidence that sperm morphology predicts paternity success in wild house wrens DOI
Emily R. A. Cramer,

Terje Laskemoen,

Oddmund Kleven

et al.

Behavioral Ecology and Sociobiology, Journal Year: 2013, Volume and Issue: 67(11), P. 1845 - 1853

Published: July 19, 2013

Language: Английский

Citations

18
Sperm morphology, sperm motility and paternity success in the bluethroat (Luscinia svecica) DOI Creative Commons
Camilla Lo Cascio Sætre, Arild Johnsen,

Even Stensrud

et al.

PLoS ONE, Journal Year: 2018, Volume and Issue: 13(3), P. e0192644 - e0192644

Published: March 6, 2018

Postcopulatory sexual selection may select for male primary characteristics like sperm morphology and motility, through competition or cryptic female choice. However, how such influence fertilization success remains poorly understood. In this study, we investigate possible correlations between paternity in the socially monogamous bluethroat (Luscinia svecica svecica), predicting that length swimming speed is positively correlated with success. total, 25% (15/61) of broods contained extra-pair offspring 10% (33/315) were sired by males. Paternity did not correlate significantly any aspects motility. Furthermore, motility morphological characters previously have been shown to be associated Thus, investigated here do appear strong predictors bluethroats.

Language: Английский

Citations

18
Coevolutionary Feedbacks between Female Mating Interval and Male Allocation to Competing Sperm Traits Can Drive Evolution of Costly Polyandry DOI
Greta Bocedi, Jane M. Reid

The American Naturalist, Journal Year: 2016, Volume and Issue: 187(3), P. 334 - 350

Published: Feb. 2, 2016

Complex coevolutionary feedbacks between female mating interval and male sperm traits have been hypothesized to explain the evolution persistence of costly polyandry. Such could potentially arise because polyandry creates competition consequent selection on allocation traits, while emerging create limitation and, hence, impose for increased However, hypothesis that coevolve with dynamics has not tested. We built a genetically explicit individual-based model simulate simultaneous number versus longevity, where these two trade off. show competing under can indeed cause promote further polyandry, particularly when are relative degree limitation. These were stronger, greater evolved, postcopulatory paternity followed loaded rather than fair raffle had realistically low heritability. therefore demonstrate driven by prevent males from overcoming limitation, thereby driving ongoing

Language: Английский

Citations

16
Do the ages of parents or helpers affect offspring fitness in a cooperatively breeding bird? DOI
Eve B. Cooper, Timothée Bonnet,

Helen L. Osmond

et al.

Journal of Evolutionary Biology, Journal Year: 2020, Volume and Issue: 33(12), P. 1735 - 1748

Published: Oct. 12, 2020

Age-related changes in parental phenotypes or genotypes can impact offspring fitness, but separating germline from nongermline transgenerational effects of ageing is difficult for wild populations. Further, cooperatively breeding species, addition to ages, the age 'helpers' attending may also affect juvenile performance. Using a 30-year study cooperative breeder with very high rates extra-pair paternity, superb fairy-wren (Malurus cyaneus), we investigated maternal, paternal and helper ages on three measures performance: nestling weight, survival independence recruitment population. Mothers longer lifespan had higher survival, indicating selective disappearance, effect maternal was similar magnitude negative. For offspring, there no evidence any either genetic sire cuckolded 'social' father. However, within-pair positive which suggest be driven by sexual selection. There were associations between average helpers nest two aspects performance; these stronger than age. In general, multiple fitness adults around them appeared more age-related environmental germline.

Language: Английский

Citations

12
Nonimmunogenetic Viral Capsid Carrier with Cancer Targeting Activity DOI Creative Commons

Bo‐Ram Lee,

Eunji Jo, Hong Yeol Yoon

et al.

Advanced Science, Journal Year: 2018, Volume and Issue: 5(8)

Published: June 27, 2018

Although protein nanoparticles (PNPs) (e.g., viral capsids) capable of delivering a broad range drug agents have shown distinctive advantages over synthetic nanomaterials, PNPs an intrinsic drawback that hampers their clinical application, is, potential immunogenicity. Here, novel method for resolving the immunogenicity problem PNPs, which is based on genetic presentation albumin-binding peptides (ABPs) surface PNP, reported. ABPs are inserted into capsid (hepatitis B virus capsid/HBVC) while preserving native self-assembly function HBVC. The effectively gather human serum albumins around HBVC and significantly reduce both inflammatory response immunoglobulin titer in live mice compared to ABP-free Furthermore, ABP-conjugated HBVCs remain within tumors longer period than conjugated tumor cell receptor-bindingpeptides, indicating also enhancing tumor-targeting performance. applied proof concept, this approach may provide general platform cancer-targeting problems enables development variety PNP-based delivery carriers with high safety efficacy.

Language: Английский

Citations

12
Small and variable sperm sizes suggest low sperm competition despite multiple paternity in a lekking suboscine bird DOI Open Access

Rebecca J. Sardell,

Emily H. DuVal

Ornithology, Journal Year: 2014, Volume and Issue: 131(4), P. 660 - 671

Published: Sept. 3, 2014

Sperm competition, whereby sperm from multiple males compete to fertilize an egg, selects for adaptations that increase fertilization success. Because success is related number, size, and quality, both interspecific intraspecific variation in these traits are predicted correlate with the level of competition. Specifically, species individuals experience high competition produce more per ejaculate, longer sperm, exert higher quality control, resulting reduced numbers morphologically abnormal size via selection most successful phenotype. However, causes morphological its consequences remain poorly understood, especially within species. We quantified morphology, number Lance-tailed Manakin (Chiroxiphia lanceolata), a Neotropical suboscine passerine cooperative lek mating system. Although alpha-status sire almost all chicks, produced ejaculate by betas, nonterritorial adults, subadult were similar those alphas. counts declined age alphas, which may explain decreased siring older Most ejaculates contained normal helical rounded heads. The proportion was unrelated social status or age. coefficients component length (head, tail, total) between alpha comparable reported passerines low Total shorter than majority avian studied date, cloacal protuberance relative testis small. These results indicate despite evidence paternity, rather morphology be major postcopulatory mediator male reproductive this This work represents first thorough quantification variability passerine.

Language: Английский

Citations

11
Evolutionary Morphology of the Primary Male Reproductive System and Spermatozoa of Goblin Spiders (Oonopidae; Araneae) DOI

Elisabeth Lipke,

Peter Michalik

Bulletin of the American Museum of Natural History, Journal Year: 2015, Volume and Issue: 396, P. 1 - 72

Published: Sept. 24, 2015

Goblin spiders (Oonopidae Simon, 1890) are distributed worldwide and among the most species-rich spider taxa. However, goblin understudied in many aspects their phylogenetic relationships not well resolved. As previously shown for numerous other groups male female reproductive system bears characters of relevance. Moreover, diversity sperm structures within is astonishingly diverse often taxon specific. In present study, we analyzed primary spermatozoa first time. We investigated 18 species 13 genera representing subfamilies Orchestininae Oonopinae by means light transmission electron microscopy. scored 44 from gross morphology as including four new system. All transfer synspermia, a method corroborating with recently proposed "Synspermiata" clade unifying all ecribellate Haplogynae. Furthermore, show far highest spiders. total, recovered 30 unambiguous synapomorphies different oonopid comparison taxa studied to date, identified longest (Neoxyphinus termitophilus) conjugates (Orchestina). Moreover remarkable presence aflagellate Opopaea apicalis, which report loss flagellum tetrapulmonate arachnids. These findings high interest only because implications, but also regard contribution our understanding postcopulatory sexual selection

Language: Английский

Citations

10