Extra‐pair paternity in birds

Molecular Ecology, Journal Year: 2019, Volume and Issue: 28(22), P. 4864 - 4882

Published: Oct. 6, 2019

Abstract Since the first molecular study providing evidence for mating outside pair bond in birds over 30 years ago, >500 studies have reported rates of extra‐pair paternity (EPP) >300 bird species. Here, we give a detailed overview current literature reporting EPP and highlight sampling biases patterns data set with respect to taxonomy, avian phylogeny global regions, knowledge which will be crucial correct interpretation results future comparative studies. Subsequently, use this comprehensive dataset simultaneously test role several ecological life history variables. We do not find clear that variation across socially monogamous species can explained by latitude, density (coloniality), migration, generation length, genetic structuring (dispersal distance), or climatic variability, after accounting phylogeny. These contrast previous studies, most likely due large heterogeneity within both predictor interest, indicating using averages might unreliable. Despite absence broadscale drivers explaining interspecific EPP, suggest certain behaviours variables facilitate constrain as indicated our finding was negatively associated latitude noncolonial species, suggesting breeding synchrony. Thus, rather than focussing on general explanations all focus should how various aspects ecology driven among groups populations same Hence, argue partly when taking right perspective. This overview, particularly provided herein create foundation further

Language: Английский

---

Why do some animals mate with one partner rather than many? A review of causes and consequences of monogamy

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2018, Volume and Issue: 93(4), P. 1795 - 1812

Published: April 23, 2018

ABSTRACT Why do some animals mate with one partner rather than many? Here, I investigate factors related to ( i ) spatial constraints (habitat limitation, availability), ii time (breeding synchrony, length of breeding season), iii need for parental care, and iv genetic compatibility, see what support can be found in different taxa regarding the importance these explaining occurrence monogamy, whether shown by sex (monogyny or monandry) both sexes (mutual monogamy). Focusing on reproductive social monogamy whenever possible, review empirical literature birds, mammals fishes, occasional examples from other taxa. Each explain mating patterns taxa, but not all. In general, there is mixed how well listed above predict monogamy. The factor that shows greatest across habitat limitation. By contrast, while a care might freshwater fishes clear evidence this case marine mammals. Hence, does appear have single overriding explanation, more taxon specific. Genetic compatibility promising avenue future work likely improve our understanding patterns. also discuss eight important consequences monogamy: parentage, eusociality altruism, infanticide, v effective population size, vi choice before mating, vii sexual selection, viii conflict. Of these, infanticide been subject debate, briefly summarised herein. A common expectation leads little conflict no selection. However, as reviewed here, selection substantial under mutual such Under long‐term quality obviously numbers, which turn affects pre‐mating choice. Overall, conclude that, despite much research patterns, still surprisingly poorly understood further experimental comparative needed. This identifies several areas data proposes new hypotheses test.

Language: Английский

---

Meta-analysis reveals that animal sexual signalling behaviour is honest and resource based

Nature Ecology & Evolution, Journal Year: 2021, Volume and Issue: 5(5), P. 688 - 699

Published: March 15, 2021

Language: Английский

---

Male alternative reproductive tactics and sperm competition: a meta‐analysis

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2022, Volume and Issue: 97(4), P. 1365 - 1388

Published: Feb. 28, 2022

ABSTRACT In many animal species, males may exhibit one of several discrete, alternative ways obtaining fertilisations, known as reproductive tactics (ARTs). Males exhibiting ARTs typically differ in the extent to which they invest traits that improve their mating success, or face sperm competition. This has led widespread prediction associated with a high competition risk, lower investment into competitiveness before mating, should more heavily after such large ejaculates and high‐quality sperm. However, despite studies investigating this question since 1990s, evidence for differences ejaculate between male is mixed, there been no quantitative summary field. Following systematic review literature, we performed meta‐analysis examining how testes size, number either low increase success. We obtained data from 92 67 species across kingdom. Our analyses showed fish facing risk had significantly larger (after controlling body size) than those risk. effect appears be due inappropriate use gonadosomatic index body‐size corrected measure investment, overestimates difference most cases. found significant different ARTs, regardless whether were measured stores following ejaculation. also exception adenosine triphosphate (ATP) content fish. Finally, post‐mating was not influenced by flexible, frequency sneakers population. Overall, our results suggest that, clear theoretical predictions, little substantially species. The incongruence empirical could explained if ( i ) models fail account overall resource levels fundamental trade‐offs traits, ii often do reflect accurately affect fertilisation

Language: Английский

---

Repeated behavioural evolution is associated with convergence of gene expression in cavity-nesting songbirds

Nature Ecology & Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Language: Английский

---

The effect of individual state on the strength of mate choice in females and males

Behavioral Ecology, Journal Year: 2023, Volume and Issue: 34(2), P. 197 - 209

Published: Feb. 23, 2023

Animals are thought to gain significant fitness benefits from choosing high-quality or compatible mates. However, there is large within-species variation in how choosy individuals during mating. This may be because the costs and of being vary according an individual's state. To test this, I systematically searched for published data relating strength animal mate choice both sexes individual age, attractiveness, body size, physical condition, mating status, parasite load. performed a meta-analysis 108 studies 78 species quantify varies In line with predictions sexual selection theory, find that females significantly choosier when they have low load, thus supporting premise expression female dependent on choosy. was not influenced by status. Attractive males were than unattractive males, but male this dataset limited small sample overall correlation between state similar sexes. Nevertheless, explained only amount choice.

Language: Английский

---

Computationally reproducing results from meta-analyses in ecology and evolutionary biology using shared code and data

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(3), P. e0300333 - e0300333

Published: March 13, 2024

Many journals in ecology and evolutionary biology encourage or require authors to make their data code available alongside articles. In this study we investigated how often could be used together, when both were available, computationally reproduce results published We surveyed the sharing practices of 177 meta-analyses between 2015–17: 60% articles shared only, 1% 15% code. each which had ( n = 26), selected a target result attempted it. Using files, successfully reproduced targeted 27–73% 26 articles, depending on stringency criteria applied for successful reproduction. The from sample 2015–17 literature can provide benchmark future meta-research studies gauging computational reproducibility research biology.

Language: Английский

---

A meta-analysis of factors influencing the strength of mate-choice copying in animals

Behavioral Ecology, Journal Year: 2020, Volume and Issue: 31(6), P. 1279 - 1290

Published: June 15, 2020

Abstract Mate-choice copying is a form of social learning in which an individual’s choice mate influenced by the apparent choices other individuals same sex and has been observed more than 20 species across broad taxonomic range. Though fitness benefits have proven difficult to measure, theory suggests that should not be beneficial for all or contexts. However, factors influencing evolution expression resolve. We systematically searched literature studies mate-choice nonhuman animals and, then, performed phylogenetically controlled meta-analysis explore influence species. Across 58 published 23 species, we find strong evidence copy others. The strength was significantly group; however, sample size limitations mean it draw firm conclusions regarding mammals arthropods. also experimental design: stronger when choosers were tested before after witnessing conspecific’s compared with information without. Importantly, did detect any difference between males females relation rate multiple mating. Our search highlights empirical work needed investigate broader range especially those differing mating systems levels reproductive investment.

Language: Английский

---

Three decades of sperm competition in birds

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2020, Volume and Issue: 375(1813), P. 20200208 - 20200208

Published: Oct. 18, 2020

In the three decades, since Birkhead and Møller published Sperm competition in birds (1992, Academic Press) more than 1000 papers have been on this topic, about half of these being empirical studies focused extrapair paternity. Both technological innovations theory moved field forward by facilitating study both mechanisms underlying sperm sexes, ensuing behavioural morphological adaptations. The proliferation has driven partly diversity behaviours morphologies that influenced competition, but also richness developed Geoff Parker over past 50 years. This article is part theme issue ‘Fifty years competition’.

Language: Английский

---

Evolution of mate guarding intensity in crickets as a possible adaptation to sexual conflict over sperm transfer

Journal of Zoology, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Abstract Mate guarding is a common behavioral adaptation in males to ensure mating or hinder current partners from remating with rival males. In the decorated cricket, Gryllodes sigillatus , transfer spermatophore females at mating, comprising sperm‐containing ampulla enveloped large gelatinous mass, spermatophylax, that serves as nuptial food gift for female. Males guard female while she feeds on and sperm are evacuated into her reproductive tract. behavior functions prevent competitors but may also represent counter‐adaptation propensity of cease feeding terminate prematurely. Using an experimental evolution approach, we tested prediction would more vigorously response experimentally intensified sexual conflict. We recorded intensity male mate replicate lines reared 25 generations either elevated reduced conflict by imposing male‐ female‐biased adult sex ratios each generation, respectively. observed higher one four male‐biased selection lines, none lines; previous work has revealed this specific line produce less manipulative gifts, suggesting existence alternative strategies. Additionally, found positive correlation between investment duration ampulla. As such, provides possible mechanism through which intense could increase fitness.

Language: Английский

---