Genetics of sex pheromone blend differences between <i>Heliothis virescens</i> and <i>Heliothis subflexa</i>: a chromosome mapping approach

Sheck, A. L.; Groot, Astrid T.; Ward, Catherine; Gemeno, César; Wang, J.; Brownie, Cavell; Schal, Coby; Gould, Fred

doi:10.1111/j.1420-9101.2005.00999.x

Cited by 47 publications

(76 citation statements)

References 86 publications

(140 reference statements)

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“…Finally, quantitative variation of the principal CHC, (Z)-11-pentacosene, between a genetically marked strain of D. virilis and D. novamexicana segregated with two of the six chromosomes and one major genetic factor was mapped (Doi et al, 1996; for a review of Drosophila work, see Ferveur, 2005;Gleason et al, 2005). This polygenic basis is also found for female differences in long-range pheromone compounds between H. virescens and H. subflexa (Groot et al, 2004;Sheck et al, 2006).…”

Section: Genetics Of Divergence In Chemical Signalsmentioning

confidence: 91%

On the scent of speciation: the chemosensory system and its role in premating isolation

2008

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Chemosensory speciation is characterized by the evolution of barriers to genetic exchange that involve chemosensory systems and chemical signals. Here, we review some representative studies documenting chemosensory speciation in an attempt to evaluate the importance and the different aspects of the process in nature and to gain insights into the genetic basis and the evolutionary mechanisms of chemosensory trait divergence. Although most studies of chemosensory speciation concern sexual isolation mediated by pheromone divergence, especially in Drosophila and moth species, other chemically based behaviours (habitat choice, pollinator attraction) can also play an important role in speciation and are likely to do so in a wide range of invertebrate and vertebrate species. Adaptive divergence of chemosensory traits in response to factors such as pollinators, hosts and conspecifics commonly drives the evolution of chemical prezygotic barriers. Although the genetic basis of chemosensory speciation remains largely unknown, genomic approaches to chemosensory gene families and to enzymes involved in biosynthetic pathways of signal compounds now provide new opportunities to dissect the genetic basis of these complex traits and of their divergence among taxa.

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Section: Genetics Of Divergence In Chemical Signalsmentioning

confidence: 91%

On the scent of speciation: the chemosensory system and its role in premating isolation

2008

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“…Indeed, case studies indicating an absence of genetic coupling abound. For instance, in several species of moth, including the almond moth (6), adzuki borer moth (7), corn borer moth (8), and heliothine moths (9,10), it is quite clear that the female pheromone signal and male response are under separate genetic control. Similarly, male and female mating behaviors in Drosophila arizonensis and Drosophilia mojavenis have distinct genetic bases (11), as do pheromone production and response in the pine engraver beetle (12).…”

Section: Disentangling Coevolution and Genetic Couplingmentioning

confidence: 99%

On the scent of pleiotropy

Singh

Shaw

2011

Proc. Natl. Acad. Sci. U.S.A.

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“…These two species are not attracted to each other in field locations where they cooccur because of differential response to pheromone blends (28), but they can be mated and backcrossed in the laboratory (28). Our previous quantitative trait locus (QTL) studies with backcross (BC) families demonstrated that genes on at least nine of the 31 Heliothis chromosomes contribute to the differences between the species in the volatile compounds produced by the pheromone gland and indicate that there can be epistatic interactions among the QTL (29,30). In the current experiments, we used a combined QTL/candidate gene approach to determine what classes of genes code for the differences between males of the two species in their response to pheromone blends.…”

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confidence: 99%

“…Heliothis virescens (hereafter referred to as Hv) is a generalist, feeding on plants in over 14 families, whereas Heliothis subflexa (Hs) specializes on plants within the genus Physalis (28,29). These two species are not attracted to each other in field locations where they cooccur because of differential response to pheromone blends (28), but they can be mated and backcrossed in the laboratory (28).…”

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Sexual isolation of male moths explained by a single pheromone response QTL containing four receptor genes

Estock

Hillier

Powell

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

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Long distance sexual communication in moths has fascinated biologists because of the complex, precise female pheromone signals and the extreme sensitivity of males to specific pheromone molecules. Progress has been made in identifying some genes involved in female pheromone production and in male response. However, we have lacked information on the genetic changes involved in evolutionary diversification of these mate-finding mechanisms that is critical to understanding speciation in moths and other taxa. We used a combined quantitative trait locus (QTL) and candidate gene approach to determine the genetic architecture of sexual isolation in males of two congeneric moths, Heliothis subflexa and Heliothis virescens. We report behavioral and neurophysiological evidence that differential male responses to three female-produced chemicals (Z9-14:Ald, Z9-16:Ald, Z11-16:OAc) that maintain sexual isolation of these species are all controlled by a single QTL containing at least four odorant receptor genes. It is not surprising that pheromone receptor differences could control H. subflexa and H. virescens responses to Z9-16:Ald and Z9-14:Ald, respectively. However, central rather than peripheral level control over the positive and negative responses of H. subflexa and H. virescens to Z11-16:OAc had been expected. Tight linkage of these receptor genes indicates that mutations altering male response to complex blends could be maintained in linkage disequilibrium and could affect the speciation process.Other candidate genes such as those coding for pheromone binding proteins did not map to this QTL, but there was some genetic evidence of a QTL for response to Z11-16:OH associated with a sensory neuron membrane protein gene.mating | speciation | AFLP | odorant receptor | Heliothis E volutionary diversification of sexual communication traits remains paradoxical (1, 2) because signal production and signal reception are under independent genetic control, and a mutation causing an alteration in one component of the system is predicted to reduce efficiency of communication and to cause a loss of fitness. The resulting stabilizing selection is expected to promote evolutionary stasis, not diversification (3-5). Systems in which changes in signals and responses are governed by the same genetic alterations (i.e., pleiotropy) should be less evolutionarily constrained in many cases (6), and studies of mating communication have revealed a few systems that appear to have this property (7-9). However, no pleiotropy has been found between signal production and response in moths (e.g., 5, 10). Because female and male moths with divergent signals and responses appear to be selected against (11, 12), we have no simple explanation for the great diversity of moths (∼180,000 species) and moth pheromones (5,13,14).Beyond capturing the attention of evolutionary biologists, the diversity of long distance, pheromone-based sexual communication traits in moths has become a focus of some molecular biologists, biochemists, neurophysiologists, and communi...

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Genetics of sex pheromone blend differences between Heliothis virescens and Heliothis subflexa: a chromosome mapping approach

Cited by 47 publications

References 86 publications

On the scent of speciation: the chemosensory system and its role in premating isolation

On the scent of speciation: the chemosensory system and its role in premating isolation

On the scent of pleiotropy

Sexual isolation of male moths explained by a single pheromone response QTL containing four receptor genes

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