Nomenclature of american cockroach sex pheromones

Persoons, C. J.; Ritter, F. J.; Verwiel, P. E. J.; Hauptmann, Hagen; Mori, Kenji

doi:10.1016/s0040-4039(00)88871-1

Cited by 45 publications

(29 citation statements)

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“…The American cockroach Periplaneta americana is an excellent model organism in which pheromone communication has been studied extensively in both neurobiology and chemical ecology [4]. Periplanone-A (PA) and periplanone-B (PB) have been isolated as major sex-pheromone components [14]. They have similar chemical compositions [14] and both can qualitatively elicit the same courtship behavior in male cockroaches [13,21].…”

Section: Abstract (Within 250 Words)mentioning

confidence: 99%

“…Periplanone-A (PA) and periplanone-B (PB) have been isolated as major sex-pheromone components [14]. They have similar chemical compositions [14] and both can qualitatively elicit the same courtship behavior in male cockroaches [13,21]. Pheromonal components are processed by distinct PA-sensitive and PB-sensitive neurons housed in the same morphologic type of sensilla (type single-walled B), which are especially abundant on the antennae of the adult male [17,19].…”

Section: Abstract (Within 250 Words)mentioning

confidence: 99%

“…Second, the sub-compartments of the MGC, A-and B-glomeruli take different developmental processes (Figs. 2, 3), despite their close proximity and the similar composition of chemicals that they process [14]. In the hawkmoth, glomerulus development depends on the arrival of a subset of sensory axons, and this occurs at different times for different glomeruli during the pupal stage [9].…”

Section: Abstract (Within 250 Words)mentioning

confidence: 99%

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Different growth patterns of two adjacent glomeruli responsible for sex-pheromone processing during postembryonic development of the cockroach Periplaneta americana

Nishino

Yoritsune

Mizunami

2009

Neuroscience Letters

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In many insect species, sex pheromone is processed by specific, enlarged glomeruli in the antennal lobes of males. In the male American cockroach, two closely located glomeruli (A and B) are responsible for processing the major pheromone components (periplanone-A and -B, respectively), and these collectively form the macroglomerular complex. Afferents originating from the dorsal and ventral surfaces of the antenna tend to project to the anterior and posterior regions of the macroglomerular complex via the dorsal and ventral antennal nerves, respectively. This topographic segregation of afferents is seen only in the macroglomerular complex, and not in other glomeruli that process normal environmental odors. Using differential, anterograde dye injection into the two antennal sensory nerves, we show that the macroglomerular complex is not formed by fusion of several glomeruli, as suggested in previous studies. but that the precursors of the A- and B-glomeruli already exist in the first larval instar. The volume of afferents in the macroglomerular complex precursor increases nearly exponentially with molting times. 430-fold from the first instar to the adult. The A- and B-glomeruli both undergo continuous growth during postembryonic development, but peak growth rates occur in different larval stages. The growth rate of the B-glomerulus peaked in the mid-developmental stage then declined, while growth of A-glomerulus was maintained at low level in early- to mid-developmental stages but increased greatly in later stages. These results suggest perception of sex pheromone occurs in early instars, and that PA and PB have distinct roles in different developmental stages

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Section: Abstract (Within 250 Words)mentioning

confidence: 99%

Section: Abstract (Within 250 Words)mentioning

confidence: 99%

Section: Abstract (Within 250 Words)mentioning

confidence: 99%

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Different growth patterns of two adjacent glomeruli responsible for sex-pheromone processing during postembryonic development of the cockroach Periplaneta americana

Nishino

Yoritsune

Mizunami

2009

Neuroscience Letters

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“…Each compartment, called a glomerulus, offers a site where a large number of sensory neurons expressing cognate odorant receptors make synaptic connections with a smaller number of interneurons [6]. Sex pheromone in insects is usually a blend of structurally similar chemicals [14,16], and these chemical compounds are processed by a specific set of glomeruli [2,6].…”

Section: Introductionmentioning

confidence: 99%

“…The male cockroach P. americana possesses a MGC with two compartments, the A and B glomeruli [13], which are responsible for processing two major sex pheromone components, periplanone-A and periplanone-B, respectively [2,14]. Recently we showed that the MGC in the male is not formed by fusion of several glomeruli in late larval stages, as suggested in previous studies [15,22], but that the precursors of the Aand B-glomeruli already exist in the first larval instar [13].…”

Section: Introductionmentioning

confidence: 99%

Postembryonic development of sexually dimorphic glomeruli and related interneurons in the cockroach Periplaneta americana

Nishino

Yoritsune

Mizunami

2010

Neuroscience Letters

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In most insects, sex pheromone is processed by an enlarged glomerular complex (macroglomerular complex, MGC) in the male antennal lobe (first-order olfactory center). The MGC of the American cockroach consists of two closely located A- and B-glomeruli which are responsible for processing the major sex pheromone components, periplanone-A and -B, respectively. Using anterograde dye injection, we investigated sexual dimorphism in sensory afferents and interneuron. The A- and B-glomeruli exist in the first larval instar of both sexes. The female MGC homolog grows at a relatively constant rate (1.2-1.8-fold growth per molt) throughout development, whereas the male MGC shows a period of accelerated growth between the 5th and 9th instars, where volume can be more than double in a single molt. These different growth patterns resulted in a 1:30 ratio in glomerular complex volumes of adult females versus males. In the female MGC-homolog, afferents originating from the dorsal and ventral antennal surfaces were biased toward anterior and posterior regions, and segregation of these afferents was less clear compared to the adult male. The staining of interneurons projecting to the protocerebrum revealed that projection patterns characteristic of sex pheromone processing appear in the late 8th instar in males, while possibly homologous projections in the female were far fewer in number. These results suggest that the glomerular complexes in pre-8th larval males, and probably females, are not differentiated for specific detection of sex pheromone. Male-specific projections for sex pheromone detection may be formed by modification of pre-existing neural circuitry

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The Synthesis of Insect Pheromones, 1979–1989

Mori

1992

Total Synthesis of Natural Products

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Nomenclature of american cockroach sex pheromones

Cited by 45 publications

References 20 publications

Different growth patterns of two adjacent glomeruli responsible for sex-pheromone processing during postembryonic development of the cockroach Periplaneta americana

Different growth patterns of two adjacent glomeruli responsible for sex-pheromone processing during postembryonic development of the cockroach Periplaneta americana

Postembryonic development of sexually dimorphic glomeruli and related interneurons in the cockroach Periplaneta americana

The Synthesis of Insect Pheromones, 1979–1989

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