The genomic response to courtship song stimulation in female<i>Drosophila melanogaster</i>

Immonen, Elina; Ritchie, Michael G.

doi:10.1098/rspb.2011.1644

Cited by 55 publications

(62 citation statements)

References 60 publications

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“…Although D. melanogaster males will readily court D. simulans females, there is prezygotic isolation between them (Coyne & Orr, 1989). Furthermore, gene expression changes in female D. melanogaster , particularly of olfactory and immune‐related genes, are evoked by D. melanogaster but not D. simulans courtship song (Immonen & Ritchie, 2012). We found that after exposure to D. simulans , mating duration of D. melanogaster focal males was intermediate between males kept in isolation or exposed to a conspecific rival.…”

Section: Discussionmentioning

confidence: 99%

The role of species‐specific sensory cues in male responses to mating rivals in Drosophila melanogaster fruitflies

Bretman

Rouse

Westmancoat

et al. 2017

Ecology and Evolution

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Complex sets of cues can be important in recognizing and responding to conspecific mating competitors and avoiding potentially costly heterospecific competitive interactions. Within Drosophila melanogaster, males can detect sensory inputs from conspecifics to assess the level of competition. They respond to rivals by significantly extending mating duration and gain significant fitness benefits from doing so. Here, we tested the idea that the multiple sensory cues used by D. melanogaster males to detect conspecifics also function to minimize “off‐target” responses to heterospecific males that they might encounter (Drosophila simulans, Drosophila yakuba, Drosophila pseudoobscura, or Drosophila virilis). Focal D. melanogaster males exposed to D. simulans or D. pseudoobscura subsequently increased mating duration, but to a lesser extent than following exposure to conspecific rivals. The magnitude of rivals’ responses expressed by D. melanogaster males did not align with genetic distance between species, and none of the sensory manipulations caused D. melanogaster to respond to males of all other species tested. However, when we removed or provided “false” sensory cues, D. melanogaster males became more likely to show increased mating duration responses to heterospecific males. We suggest that benefits of avoiding inaccurate assessment of the competitive environment may shape the evolution of recognition cues.

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Section: Discussionmentioning

confidence: 99%

The role of species‐specific sensory cues in male responses to mating rivals in Drosophila melanogaster fruitflies

Bretman

Rouse

Westmancoat

et al. 2017

Ecology and Evolution

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“…2015) as well as social conditions (Carney 2007; Cummings et al. 2008; Immonen and Ritchie 2012) are major causes of variation in the gene expression patterns. A static genome can track environmental changes by altering the regulation of gene expression, and understanding the transcriptomic basis of phenotypic plasticity can thus provide important insights into how a single genotype can generate different phenotypes (Zhou et al.…”

Section: Introductionmentioning

confidence: 99%

Mating Changes Sexually Dimorphic Gene Expression in the Seed Beetle Callosobruchus maculatus

Immonen

Sayadi

Bayram

et al. 2017

Genome Biology and Evolution

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Sexually dimorphic phenotypes arise largely from sex-specific gene expression, which has mainly been characterized in sexually naïve adults. However, we expect sexual dimorphism in transcription to be dynamic and dependent on factors such as reproductive status. Mating induces many behavioral and physiological changes distinct to each sex and is therefore expected to activate regulatory changes in many sex-biased genes. Here, we first characterized sexual dimorphism in gene expression in Callosobruchus maculatus seed beetles. We then examined how females and males respond to mating and how it affects sex-biased expression, both in sex-limited (abdomen) and sex-shared (head and thorax) tissues. Mating responses were largely sex-specific and, as expected, females showed more genes responding compared with males (∼2,000 vs. ∼300 genes in the abdomen, ∼500 vs. ∼400 in the head and thorax, respectively). Of the sex-biased genes present in virgins, 16% (1,041 genes) in the abdomen and 17% (243 genes) in the head and thorax altered their relative expression between the sexes as a result of mating. Sex-bias status changed in 2% of the genes in the abdomen and 4% in the head and thorax following mating. Mating responses involved de-feminization of females and, to a lesser extent, de-masculinization of males relative to their virgin state: mating decreased rather than increased dimorphic expression of sex-biased genes. The fact that regulatory changes of both types of sex-biased genes occurred in both sexes suggests that male- and female-specific selection is not restricted to male- and female-biased genes, respectively, as is sometimes assumed.

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“…While a territory holder may respond aggressively to a chemical signal perceived as coming from an intruder, that same signal may be attractive to the animal in breeding conditions. The same receiver may display a modified response due to altered gene expression following experience (Immonen & Ritchie 2012), or due to changes in the animal host’s gastrointestinal microbial community shown to influence brain processes linked to mate preferences (Ezenwa et al 2012; Foster & McVey Neufeld 2013). Furthermore, sex differences in physiology can predict both time spent producing chemosensory behavior (Clapham et al 2014) and odor preferences (Dantzer & Jaeger 2007; Whittaker et al 2011, 2013; Baird et al 2015).…”

Section: Introductionmentioning

confidence: 99%

In Space and Time: Territorial Animals are Attracted to Conspecific Chemical Cues

2017

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Territorial animals lay scent marks around their territories to broadcast their presence, but these olfactory signals can both attract and repel con-specifics. Attraction or aversion can have a profound impact in terms of space use and thereby influence an individual’s access to resources and mates. Here, we test the impact of chemical signals on the long-term space use and activity of receivers, comparing the response of males and females, territory holders, and temporary visitors in Sceloporus undulatus lizards in the field. We placed either male femoral gland secretions (chemical) or blank (control) cues on resident male landmarks, repeatedly over 5 d, while monitoring the activity and location of all lizards in the vicinity. We found that resident males and females, but not non-resident males, were active on more days near landmarks treated with chemical cues than landmarks treated with control cues. Non-resident males remained closer to chemical than control cues. These results suggest that territorial scent marks are attractive to conspecifics and impact space use, but that the specific effects depend on receiver sex and residency status. Such subtle or gradual changes in behavior may frequently be overlooked by short-term choice experiments. Future studies investigating the behavioral significance of a communicative signal should consider these finer details of behavior for a more comprehensive assessment.

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The genomic response to courtship song stimulation in femaleDrosophila melanogaster

Cited by 55 publications

References 60 publications

The role of species‐specific sensory cues in male responses to mating rivals in Drosophila melanogaster fruitflies

The role of species‐specific sensory cues in male responses to mating rivals in Drosophila melanogaster fruitflies

Mating Changes Sexually Dimorphic Gene Expression in the Seed Beetle Callosobruchus maculatus

In Space and Time: Territorial Animals are Attracted to Conspecific Chemical Cues

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