Contributions of natural and sexual selection to the evolution of premating reproductive isolation: a research agenda

Safran, Rebecca J.; Scordato, Elizabeth S. C.; Symes, Laurel B.; Rodrı́guez, Rafael L.; Mendelson, Tamra C.

doi:10.1016/j.tree.2013.08.004

Cited by 173 publications

(194 citation statements)

References 66 publications

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“…Nestling-like traits attract females via a sensory trap to exploit female parental care for nestlings, and thus exploit the sensory bias of females. These traits correspond to the three main mechanisms proposed to explain how mating preferences arise and select for male traits (Candolin 2003; also see Safran et al 2013 for a variant). It should be noted that these three mechanisms are not mutually exclusive.…”

Section: Differences Among the Three Categoriesmentioning

confidence: 75%

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Beauty alone is insufficient: female mate choice in the barn swallow

Hasegawa

2017

Ecological Research

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The barn swallow, Hirundo rustica, is a model species for studying sexual selection, particularly female mate choice. Although there have already been several reviews of female mate choice and its geographic variation in this species, all of them have focused on secondary sexual characteristics. Here, for better understanding of the general pattern of female mate choice and their influence on male phenotype, I review all of the female mate choice criteria ever reported in the barn swallow, emphasizing the importance of relatively inconspicuous male traits. These include resources defended or provided by males, such as territory and paternal investment. In addition, females prefer a nestling-like vocalization, enticement call, which is particularly noteworthy because females prefer immature calls. This pattern contrasts with female choice based on secondary sexual characteristics, in which more mature, elaborate male traits are almost always favored. Nestling-like male traits are widespread, and thus female avoidance of, rather than preference for, mature forms might be common. In addition to selection on the target trait itself, these resources and nestling-like male traits would also matter in understanding the evolution of the overall male phenotype and its geographic variation, due to the interrelationships among male target traits and those among female mate preferences. Female preferences for inconspicuous traits are highly dependent on ecological factors such as nest predation pressure, and thus overall male phenotype including secondary sexual characteristics might be more predictable than previously thought. Future studies should focus on not only conspicuous secondary sexual characteristics but inconspicuous male traits.

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Section: Differences Among the Three Categoriesmentioning

confidence: 75%

“…Still, female preferences, particularly those for direct benefits, depend on environmental conditions (or, ecological factors: Safran et al 2013), and thus a simple testable prediction can be made as follows.…”

Section: Interrelationship Among Female Mate Preferencesmentioning

confidence: 99%

Beauty alone is insufficient: female mate choice in the barn swallow

Hasegawa

2017

Ecological Research

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“…Tight physical linkage between host performance and preference genes, leading to assortative mating through habitat choice, has been first discovered in pea aphids (Hawthorne and Via, 2001;Smadja et al, 2012). Key traits that are associated via linkage and which combine ecological and sexual selection are particularly powerful during phylogenetic divergence (Servedio et al, 2011;Merrill et al, 2012;Safran et al, 2013).…”

Section: Interaction Between Pear Ester and Codling Moth Pheromonementioning

confidence: 99%

A predicted sex pheromone receptor of codling moth Cydia pomonella detects the plant volatile pear ester

et al. 2014

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Plant volatiles mediate host discrimination and host finding in phytophagous insects. Understanding how insects recognize these signals is a current challenge in chemical ecology research. Pear ester, ethyl (E,Z )-2,4-decadienoate, is a powerful, bisexual attractant of codling moth Cydia pomonella (Lepidoptera, Tortricidae) and strongly synergizes the male response to female-produced sex pheromone. We show here that the codling moth odorant receptor (OR) CpomOR3 is dedicated to detecting this plant volatile. Heterologous expression of CpomOR3 in Drosophila T1 trichoid and ab3A basiconic sensilla, followed by a screening with codling moth pheromone compounds and known plant volatile attractants, confirms that CpomOR3 binds to pear ester. Although CpomOR3 does not respond to any of the pheromone components tested, a phylogenetic analysis of lepidopteran chemosensory receptor genes reveals a close relationship of CpomOR3 with pheromone receptors (PRs) in moths. This corroborates the interaction of ecological and social chemosensory cues during premating communication. The finding that a plant volatile compound, pear ester, is a specific ligand for a PR-like lepidopteran receptor adds to our understanding of insect-plant interactions and emphasizes the interaction of natural and sexual selection during the phylogenetic divergence of insect herbivores.

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“…interactions between reproductive tracts and gametes [6,25]). Just as occurs with other traits under the influence of sexual selection, postmating-prezygotic traits can influence female and male fitness in different ways and lead to sexual conflict and coevolution between the sexes [26,27]. For example, ejaculate traits that directly increase male fitness can have deleterious effects on female fitness [28,29] and previous work in Drosophila fruit flies has demonstrated ongoing coevolution between the female reproductive tract and male ejaculate [30,31].…”

Section: Introductionmentioning

confidence: 99%

Correlated evolution of male and female reproductive traits drive a cascading effect of reinforcement inDrosophila yakuba

2016

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Selection against maladaptive hybridization can drive the evolution of reproductive isolation in a process called reinforcement. While the importance of reinforcement in evolution has been historically debated, many examples now exist. Despite these examples, we typically lack a detailed understanding of the mechanisms limiting the spread of reinforced phenotypes throughout a species' range. Here we address this issue in the fruit fly Drosophila yakuba, a species that hybridizes with its sister species D. santomea and is undergoing reinforcement in a well-defined hybrid zone on the island of São Tomé. Within this region, female D. yakuba show increased postmating-prezygotic (gametic) isolation towards D. santomea when compared with females from allopatric populations. We use a combination of natural collections, fertility assays, and experimental evolution to understand why reinforced gametic isolation in D. yakuba is confined to this hybrid zone. We show that, among other traits, D. yakuba males from sympatric populations sire fewer progeny than allopatric males when mated to allopatric D. yakuba females. Our results provide a novel example of reinforcement acting on a postmating-prezygotic trait in males, resulting in a cascade of reproductive isolation among conspecific populations.

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Contributions of natural and sexual selection to the evolution of premating reproductive isolation: a research agenda

Cited by 173 publications

References 66 publications

Beauty alone is insufficient: female mate choice in the barn swallow

Beauty alone is insufficient: female mate choice in the barn swallow

A predicted sex pheromone receptor of codling moth Cydia pomonella detects the plant volatile pear ester

Correlated evolution of male and female reproductive traits drive a cascading effect of reinforcement inDrosophila yakuba

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