Repetition of Bateman challenges the paradigm

Tang‐Martínez, Zuleyma

doi:10.1073/pnas.1209394109

Cited by 14 publications

(11 citation statements)

References 20 publications

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“…It should be noted that future work should incorporate both sexes equally in theoretical considerations, as there appears to exist a sex bias not only in empirical (see below), but also in theoretical work (e.g. [23,24]). …”

Section: (A) Sexual Selection and Its Application To Timing Processesmentioning

confidence: 99%

Timing as a sexually selected trait: the right mate at the right moment

Hau

Dominoni

Casagrande

et al. 2017

Phil. Trans. R. Soc. B

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One contribution of 12 to a theme issue 'Wild clocks: integrating chronobiology and ecology to understand timekeeping in free-living animals'. Sexual selection favours the expression of traits in one sex that attract members of the opposite sex for mating. The nature of sexually selected traits such as vocalization, colour and ornamentation, their fitness benefits as well as their costs have received ample attention in field and laboratory studies. However, sexually selected traits may not always be expressed: coloration and ornaments often follow a seasonal pattern and behaviours may be displayed only at specific times of the day. Despite the widely recognized differences in the daily and seasonal timing of traits and their consequences for reproductive success, the actions of sexual selection on the temporal organization of traits has received only scant attention. Drawing on selected examples from bird and mammal studies, here we summarize the current evidence for the daily and seasonal timing of traits. We highlight that molecular advances in chronobiology have opened exciting new opportunities for identifying the genetic targets that sexual selection may act on to shape the timing of trait expression. Furthermore, known genetic links between daily and seasonal timing mechanisms lead to the hypothesis that selection on one timescale may simultaneously also affect the other. We emphasize that studies on the timing of sexual displays of both males and females from wild populations will be invaluable for understanding the nature of sexual selection and its potential to act on differences within and between the sexes in timing. Molecular approaches will be important for pinpointing genetic components of biological rhythms that are targeted by sexual selection, and to clarify whether these represent core or peripheral components of endogenous clocks. Finally, we call for a renewed integration of the fields of evolution, behavioural ecology and chronobiology to tackle the exciting question of how sexual selection contributes to the evolution of biological clocks.This article is part of the themed issue 'Wild clocks: integrating chronobiology and ecology to understand timekeeping in free-living animals'.

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Section: (A) Sexual Selection and Its Application To Timing Processesmentioning

confidence: 99%

Timing as a sexually selected trait: the right mate at the right moment

Hau

Dominoni

Casagrande

et al. 2017

Phil. Trans. R. Soc. B

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“…Yet in the company of other challenges to the competitive male and discriminating female paradigm, the repetition gives pause, 33 particularly in light of the “problems with paradigms.” 7 “…paradigms act as a “ lingua franca” that facilitates communication among scientists. On the negative side, paradigms can lead to simplification, can blind us to phenomena that do not fit the accepted world-view, can guide us to accept hypotheses that are unfounded, and can prevent us from considering alternative hypotheses and explanations.…”

Section: Why Does the Repetition Challenge “The Paradigm”?mentioning

confidence: 99%

Mendel’s law reveals fatal flaws in Bateman’s 1948 study of mating and fitness

Gowaty¹,

Kim²,

Anderson³

2013

Fly

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Bateman’s experimental study of Drosophila melanogaster produced conclusions that are now part of the bedrock premises of modern sexual selection. Today it is the most cited experimental study in sexual selection, and famous as the first experimental demonstration of sex differences in the relationship between number of mates and relative reproductive success. We repeated the experimental methodology of the original to evaluate its reliability. The results indicate that Bateman’s methodology of visible mutations to assign parentage and reproductive success to subject adults is significantly biased. When combined in offspring, the mutations decrease offspring survival, so that counts of mate number and reproductive success are mismeasured. Bateman’s method overestimates the number of subjects with no mates and underestimates the number with one or more mates for both sexes. Here we discuss why Bateman’s paper is important and present additional analyses of data from our monogamy trials. Monogamy trials can inform inferences about the force of sexual selection in populations because in monogamy trials male–male competition and female choice are absent. Monogamy trials also would have provided Bateman with an a priori test of the fit of his data to Mendel’s laws, an unstated, but vital assumption of his methodology for assigning parentage from which he inferred the number of mates per individual subject and their reproductive success. Even under enforced monogamous mating, offspring frequencies of double mutant, single mutant and no mutant offspring were significantly different from Mendelian expectations proving that Bateman’s method was inappropriate for answering the questions he posed. Double mutant offspring (those with a mutation from each parent) suffered significant inviability as did single mutant offspring whenever they inherited their mother’s marker but the wild-type allele at their father’s marker locus. These inviability effects produced two important inaccuracies in Bateman’s results and conclusions. (1) Some matings that actually occurred were invisible and (2) reproductive success of some mothers was under-estimated. Both observations show that Bateman’s conclusions about sex differences in number of mates and reproductive success were unwarranted, based on biased observations. We speculate about why Bateman’s classic study remained without replication for so long, and we discuss why repetition almost 60 years after the original is still timely, necessary and critical to the scientific enterprise. We highlight overlooked alternative hypotheses to urge that modern tests of Bateman’s conclusions go beyond confirmatory studies to test alternative hypotheses to explain the relationship between mate number and reproductive success.

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“…However, envisaging sex roles as being qualitatively different is overly simplistic (see Altmann 1997) and recent research (Gowaty et al 2012; Tang-Martinez 2012) suggests that pronounced mutual mate choice and active courtship by both sexes may be more common than formerly appreciated.…”

Section: Introductionmentioning

confidence: 99%

“…A frequently acknowledged trend among animals (Bateman 1948;Trivers 1972;Andersson 1994), including salticids (Jackson & Pollard 1997), is that one sex, usually the female, tends to express matechoice behaviour more strongly, whereas the other sex, usually the male, tends to be more active in courtship and tends to be less discriminating. However, envisaging sex roles as being qualitatively different is overly simplistic (see Altmann 1997) and recent research (Gowaty et al 2012;Tang-Martinez 2012) suggests that pronounced mutual mate choice and active courtship by both sexes may be more common than formerly appreciated.…”

Section: Introductionmentioning

confidence: 99%

Cross‐Modality Effects of Prey Odour During the Intraspecific Interactions of a Mosquito‐Specialist Predator

Cross

Jackson

2014

Ethology

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One of the predictions from evolutionary game theory is that individuals will increase their willingness (i.e., become primed) to escalate aggression when they detect the presence of a limiting resource. Here we test this prediction in the context of prey odour priming escalation decisions during vision-based encounters by Evarcha culicivora. This East African jumping spider (Salticidae) feeds indirectly on vertebrate blood by actively choosing blood-carrying female mosquitoes as preferred prey. Unlike many salticid species, it also expresses pronounced mutual mate choice. As predicted, we show here that, in the presence of odour from their preferred prey, both sexes of E. culicivora escalate during vision-based same-sex encounters. This is further evidence that the odour of blood-carrying mosquitoes is salient to this salticid. For both sexes of E. culicivora, this particular prey may be a resource that matters in the context of intrasexual selection.

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Repetition of Bateman challenges the paradigm

Cited by 14 publications

References 20 publications

Timing as a sexually selected trait: the right mate at the right moment

Timing as a sexually selected trait: the right mate at the right moment

Mendel’s law reveals fatal flaws in Bateman’s 1948 study of mating and fitness

Cross‐Modality Effects of Prey Odour During the Intraspecific Interactions of a Mosquito‐Specialist Predator

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