Sexual selection after gamete release in broadcast spawning invertebrates DOI Open Access
Jonathan P. Evans, Rowan A. Lymbery

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2020, Volume and Issue: 375(1813), P. 20200069 - 20200069

Published: Oct. 18, 2020

Broadcast spawning invertebrates offer highly tractable models for evaluating sperm competition, gamete-level mate choice and sexual conflict. By displaying the ancestral mating strategy of external fertilization, where selection is constrained to act after gamete release, broadcast spawners also potential evolutionary insights into cascade events that led reproduction in more ‘derived’ groups (including humans). Moreover, dynamic reproductive conditions faced by these animals mean strength direction on both males females can vary considerably. These attributes make invertebrate systems uniquely suited testing, extending, sometimes challenging classic contemporary ideas many which were first captured Parker's seminal papers topic. Here, we provide a synthesis outlining progress fields, highlight burgeoning mechanistic understanding broadly across animal kingdom. This article part theme issue ‘Fifty years competition’.

Language: Английский

Sexual selection in females and the evolution of polyandry DOI Creative Commons
Salomé Fromonteil, Lucas Marie-Orleach, Lennart Winkler

et al.

PLoS Biology, Journal Year: 2023, Volume and Issue: 21(1), P. e3001916 - e3001916

Published: Jan. 10, 2023

Over the last decades, field of sexual selection underwent a paradigm shift from sexual-stereotype thinking “eager” males and “coy” females towards more nuanced perspective acknowledging that not only but also can benefit multiple mating compete for partners. Yet, in is still considered peculiarity, evolution polyandry often viewed to result higher interest males. Here, we present meta-analytic evidence 77 species across broad range animal taxa demonstrate female reproductive success overall positively correlated with success, suggesting typically mating. Importantly, found these fitness gains likely promote polyandry. Our findings offer support idea widespread play key role systems. Thereby, our results extend understanding evolutionary consequences reproduction contribute balanced view how operates females.

Language: Английский

Citations

42
The definition of sexual selection DOI Creative Commons
David M. Shuker, Charlotta Kvarnemo

Behavioral Ecology, Journal Year: 2021, Volume and Issue: 32(5), P. 781 - 794

Published: May 11, 2021

Sexual selection is a key component of evolutionary biology. However, from the very formulation sexual by Darwin, nature and extent have been controversial. Recently, such controversy has led back to fundamental question just what is. This included how we incorporate female-female reproductive competition into or natural selection. In this review, do four things. First, examine want definition do. Second, define selection:

Language: Английский

Citations

83
Sex roles and sex ratios in animals DOI Creative Commons
Peter M. Kappeler, Sarah Benhaiem, Claudia Fichtel

et al.

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2022, Volume and Issue: 98(2), P. 462 - 480

Published: Oct. 28, 2022

ABSTRACT In species with separate sexes, females and males often differ in their morphology, physiology behaviour. Such sex‐specific traits are functionally linked to variation reproductive competition, mate choice parental care, which have all been sex roles. At the 150th anniversary of Darwin's theory on sexual selection, question why patterns roles vary within across remains a key topic behavioural evolutionary ecology. New theoretical, experimental comparative evidence suggests that adult ratio (ASR) is driver Here, we first define discuss historical emergence role concept, including recent criticisms rebuttals. Second, review various ratios focus ASR, explore its theoretical links Third, causes, especially consequences, biased ASRs, focusing results correlational studies effect ASR choice, conflict, care mating systems, social behaviour, hormone fitness. We present animals diverse societies sensitive local even short timescales, propose explanations for conflicting results. conclude an overview open questions this field integrating demography, life history

Language: Английский

Citations

46
The history of sexual selection research provides insights as to why females are still understudied DOI Creative Commons
Malin Ah‐King

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

Published: Nov. 15, 2022

Abstract While it is widely acknowledged that Darwin’s descriptions of females were gender-biased, gender bias in current sexual selection research less recognized. An examination the history shows prevalent male precedence—that starts with male-centered investigations or explanations and thereafter includes female-centered equivalents. In comparison, incidence female precedence low. Furthermore, a comparison between volume publications focusing on males versus former far outnumber latter. This not only historical pattern; theory are still male-centered—due to conspicuous traits, practical obstacles, continued bias. Even way commonly defined contributes this provides an illustrative example by which we can learn recognize biases identify gaps knowledge. I conclude call for scientific community interrogate its own suggest strategies alleviating field beyond.

Language: Английский

Citations

42
The roles of sexual selection and sexual conflict in shaping patterns of genome and transcriptome variation DOI
Nicole M. Tosto, Emily R. Beasley, Bob B. M. Wong

et al.

Nature Ecology & Evolution, Journal Year: 2023, Volume and Issue: 7(7), P. 981 - 993

Published: March 23, 2023

Language: Английский

Citations

35
Multivariate Models of Animal Sex: Breaking Binaries Leads to a Better Understanding of Ecology and Evolution DOI Creative Commons
Jessica F. McLaughlin, Kinsey M. Brock,

Isabella Gates

et al.

Integrative and Comparative Biology, Journal Year: 2023, Volume and Issue: 63(4), P. 891 - 906

Published: May 8, 2023

"Sex" is often used to describe a suite of phenotypic and genotypic traits an organism related reproduction. However, these traits-gamete type, chromosomal inheritance, physiology, morphology, behavior, etc.-are not necessarily coupled, the rhetorical collapse variation into single term elides much complexity inherent in sexual phenotypes. We argue that consideration "sex" as constructed category operating at multiple biological levels opens up new avenues for inquiry our study variation. apply this framework three case studies illustrate diversity sex variation, from decoupling phenotypes evolutionary ecological consequences intrasexual polymorphisms. instead assuming binary systems, some may be better categorized multivariate nonbinary. Finally, we conduct meta-analysis terms scientific literature highlight how model can clarify, rather than cloud, within across species. such expanded equips us understand processes, biologists, it incumbent upon push back against misunderstandings biology enact harm on marginalized communities.

Language: Английский

Citations

30
How research on female vertebrates contributes to an expanded challenge hypothesis DOI Creative Commons
Kimberly A. Rosvall, Alexandra B. Bentz, Elizabeth George

et al.

Hormones and Behavior, Journal Year: 2019, Volume and Issue: 123, P. 104565 - 104565

Published: Sept. 10, 2019

Language: Английский

Citations

61
The evolution and physiology of male pregnancy in syngnathid fishes DOI
Camilla M. Whittington, Christopher R. Friesen

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2020, Volume and Issue: 95(5), P. 1252 - 1272

Published: May 5, 2020

ABSTRACT The seahorses, pipefishes and seadragons (Syngnathidae) are among the few vertebrates in which pregnant males incubate developing embryos. Syngnathids popular studies of sexual selection, sex‐role reversal, reproductive trade‐offs, now emerging as valuable comparative models for study biology evolution complexity. These fish offer opportunity to examine physiology, behavioural implications, evolutionary origins embryo incubation, independent female tract hormonal milieu. Such allow us flexibility regulatory systems, by determining whether pathways underpinning pregnancy also co‐opted incubating males, or novel have evolved response common challenges imposed embryos releasing live young. Syngnathidae ideal complexity, because they exhibit multiple parallel complex phenotypes. Here we assay taxonomic distribution syngnathid parity mode, selective pressures that may led emergence male pregnancy, describe reproduction, highlight pressing areas future research. Experimental tests a range hypotheses, including many generated with genomic tools, required inform overarching theories about fitness implications pregnancy. information will be widely applicable our understanding fundamental processes animals.

Language: Английский

Citations

56
Avian vocalisations: the female perspective DOI
Victoria I. Austin, Anastasia H. Dalziell, Naomi E. Langmore

et al.

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2021, Volume and Issue: 96(4), P. 1484 - 1503

Published: April 1, 2021

ABSTRACT Research on avian vocalisations has traditionally focused male song produced by oscine passerines. However, accumulating evidence indicates that complex can readily evolve outside the traditional contexts of mate attraction and territory defence birds, yet previous bias towards shaped – continues to shape our understanding communication as a whole. Accordingly, in this review we seek address imbalance synthesising studies female from across signalling throughout Aves, discuss implications recent empirical advances for both sexes. This reveals great structural functional diversity among highlights important roles play mediating female‐specific behaviours. fundamental gaps remain. While there are now several case identify function vocalisations, few quantify associated fitness benefits. Additionally, very little is known about role vocal learning development vocalisations. Thus, remains pressing need examine all forms birds. In light what know functions mechanisms suggest conventional male‐biased definitions songs calls inadequate furthering more generally. Therefore, propose two simple alternatives, emancipated sex singer. The first distinguishes functionally sexually selected signal, whilst second them mechanistically terms their underlying neurological processes. It clear investigations needed into ultimate proximate causes vocalisations; however, these essential if develop holistic epistemology sexes, ecological taxonomic divides.

Language: Английский

Citations

41
Biological sex is binary, even though there is a rainbow of sex roles DOI Creative Commons
Wolfgang Goymann, Henrik Brumm, Peter M. Kappeler

et al.

BioEssays, Journal Year: 2022, Volume and Issue: 45(2)

Published: Dec. 21, 2022

Biomedical and social scientists are increasingly calling the biological sex into question, arguing that is a graded spectrum rather than binary trait. Leading science journals have been adopting this relativist view, thereby opposing fundamental facts. While we fully endorse efforts to create more inclusive environment for gender-diverse people, does not require denying sex. On contrary, rejection of seems be based on lack knowledge about evolution it champions species chauvinism, inasmuch as imposes human identity notions millions other species. We argue definition sexes remains central recognising diversity life. Humans with their unique combination gender different from non-human animals plants in respect. Denying concept sex, whatever cause, ultimately erodes scientific progress may open flood gates "alternative truths."

Language: Английский

Citations

33