sex pheromone
WordNet
- tell the sex (of young chickens)
- the properties that distinguish organisms on the basis of their reproductive roles; "she didnt want to know the sex of the foetus" (同)gender, sexuality
- all of the feelings resulting from the urge to gratify sexual impulses; "he wanted a better sex life"; "the film contained no sex or violence" (同)sexual urge
- either of the two categories (male or female) into which most organisms are divided; "the war between the sexes"
- a chemical substance secreted externally by some animals (especially insects) that influences the physiology or behavior of other animals of the same species
- having sexual differentiation
- characterized by sexuality; "highly sexed"
PrepTutorEJDIC
- 〈U〉〈C〉『性』,性別 / 《the~》《形容詞を伴い集合的に》『男性』,『女性』 / 〈U〉(男女(雌雄)間の)相違[の意識] / 〈U〉性に関する事柄(情報) / 〈U〉性交 / 〈ひよこなど〉‘の'性別を見分ける
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/10/31 19:02:35」(JST)
wiki en
Sex pheromones are pheromones released by an organism to attract an individual of the opposite sex, encourage them to mate with them, or perform some other function closely related with sexual reproduction. Sex pheromones specifically focus on indicating females for breeding, attracting the opposite sex, and conveying information on their species, age, sex and genotype after emitted by males. Volatile pheromones are characterized as sex pheromones or defensive pheromones and usually form a specific odor and are focused on alarm sensitivity.[1] Non-volatile pheromones, or cuticular contact pheromones, are more closely related to social insects as they are usually detected by direct contact with chemoreceptors on specific parts of insects (i.e. antennae, feet).
Contents
- 1 Introduction
- 2 Species which exhibit sex pheromones
- 2.1 Ciliate protozoan
- 2.2 Green algae
- 2.3 Fungi
- 2.4 Moss
- 2.5 Fruit flies
- 2.6 Moths
- 2.7 Butterflies
- 2.8 Wasps
- 2.9 Spiders
- 2.10 Earthworms
- 2.11 Mealworm beetle
- 2.12 Sea hare
- 2.13 Amphibians
- 2.14 Lizards and snakes
- 2.15 Birds
- 2.16 Mice
- 3 Humans
- 4 Mate choice and sexual selection
- 5 External fertilization and chemical duets
- 6 References
Introduction
Odours might be a kind of male "ornament" selected for by female choice; they meet the criteria Charles Darwin set out in The Descent of Man, and Selection in Relation to Sex. After many years of study the importance of chemical communication in this area is becoming clear.[2]
Sex pheromones have evolved in many species. The many types of pheromones (i.e. alarm, aggregation, defense, sexual attraction) all have a common cause acting as chemical cues to trigger a response. However, sex pheromones are particularly associated with signaling mating behaviors or dominance. The odors released can be seen as a favorable trait selected by either the male or female leading to attraction and copulation. Chemical signaling can even be used to find genetically different mates and avoid inbreeding.[3] Females are often choosy when deciding to mate with a male and chemical communication ensures that they find a high-quality mate that satisfies their reproduction needs.
Species which exhibit sex pheromones
Ciliate protozoan
Blepharisma japonicum is a ciliate protozoan that displays nuclear dimorphism, having a diploid micronucleus and a polyploid macronucleus. B. japonicum produces sexual pheromones that promote conjugation.[4][5] There are two mating types (I and II), each type excreting a specific pheromone (termed gamone 1 and gamone 2, respectively). When sexually mature mating-type I cells are moderately starved, they autonomously produce and secrete gamone I.[4] Gamone 1 specifically acts on mating-type II cells, transforming them so that they can unite with type I cells, and inducing them to secrete gamone 2. Gamone 2 then transforms type I cells so that they can unite with type II cells. Cells that can unite may then undergo conjugation.
Green algae
Volvox is a genus of chlorophytes, a type of green algae. Different species form spherical colonies of up to 50,000 cells. One well-studied species, Volvox carteri (2,000 – 6,000 cells) occupies temporary pools of water that tend to dry out in the heat of late summer. As their environment dries out, asexual V. carteri quickly die. However, they are able to escape death by switching, shortly before drying is complete, to the sexual phase of their life cycle that leads to production of dormant desiccation-resistant zygotes. Sexual development is initiated by a glycoprotein pheromone.[6] This pheromone is one of the most potent known biological effector molecules. It can trigger sexual development at concentrations as low as 10−16 M.[6] Kirk and Kirk showed that sex-inducing pheromone production can be triggered experimentally in somatic cells by heat shock.[7] Thus heat shock may be a condition that ordinarily triggers sex-inducing pheromone in nature.[6]
The Closterium peracerosum-strigosum-littorale (C. psl) complex is a unicellular, isogamous charophycean alga group that is the closest unicellular relative to land plants. Heterothallic strains have two mating types, mt(-) and mt(+). When cells of opposite mating types are mixed in a nitrogen-deficient mating medium, mt(-) and mt(+) cells pair with each other and release protoplasts. This release is then followed by protoplast fusion (conjugation) leading to formation of a diploid zygospore. Sex pheromones termed protoplast-release inducing proteins (glycopolypeptides) produced by mt(-) and mt(+) cells facilitate this process.[8]
Fungi
Among fungi, pheromones promote sexual interaction in numerous species including the aquatic fungus Allomyces macrogynus, the Mucorales fungus Mucor mucedo, Neurospora crassa and the yeasts Saccharomyces cerevisiae, Schizosaccharomyces pombe and Rhodosporidium toruloides.[9][10][11] These fungi use a variety of different molecules in their sexual communication, including small molecules, such as steroids, other lipids, peptides, and derivatives of organic acid, as well as large molecules, such as glycoproteins. Although sex pheromones are ordinarily transmitted through an aqueous medium, they may also be transmitted through the air as occurs in the fungus Mucor mucedo.[12]
Sexual communication and the sexual life cycle have been especially well detailed in S. cerevisiae and S. pombe. In these yeasts mating occurs between two cells of opposite mating type and is controlled by the reciprocal action of pheromones. Cells of each mating type release pheromones that induce mating through promotion of alterations in cells of the opposite mating type. The two cells then conjugate to form a diploid zygote that may undergo meiosis. Meiosis leads to sporulation and release of ascospores that may germinate to form haploid cells, thus completing the sexual cycle. The pheromones produced by these yeasts have been identified as short peptides.[11][13]
Moss
In non-vascular plants, sexual reproduction depends on unicellular free-motile sperm traveling from male to female reproductive structures across the terrestrial landscape. Recent evidence suggests that microarthropods (e.g. springtails and oribatid mites) can disperse sperm in mosses. Tissues of the moss Ceratodon purpureus emit complex volatile scents, similar in diversity to those in pollination mutualisms between flowering plants and insects.[14] The chemical composition of C. purpureus volatiles are sex-specific, and moss dwelling microarthropods are differentially attracted to these sex-specific moss volatile cues. These findings indicate the emergence of a scent-based “plant-pollinator-like” relationship between two of Earth’s most ancient terrestrial lineages, mosses and microarthropods.
Fruit flies
Drosophila melanogaster males are known for their elaborate courtship rituals, where they follow a female, tap on her with his forelegs and “sing” a courtship song through rapid wing clapping sounding much like a vibration sound in an attempt to entice her.[15] He then proceeds to contact her genitalia with his mouth and curve his abdomen to induce copulation.[15] During the early stages of courtship where the male taps the female with his forelegs, males are able to sense the gender and species type of a potential female through the use of non-volatile (i.e. cuticular) pheromones and gustatory receptor neurons (GRNs) located on the males forelegs. This process is known as gustation where non-volatile pheromones are detected by the GRNs and processed later inducing courtship.[15]
Drosophila flies exhibit specific relationships between neurons and behavior. Much of the courtship activity involved in the sexual mating process for this species of flies involves mapping neuronal circuitry. As for the neuronal content of the olfactory cues, in both vertebrates and insects, olfactory sensory neurons (OSNs) extend from the dendrites that are responsible for interacting with odors from the environment and are then recognized by distinct odorant receptor (OR) proteins that are located in the dendritic membrane.[16] Since there are two distinct forms of anatomical connections in the olfactory interneurons of the third order olfactory interneurons of the lateral horn of the drosophila melanogaster, these neurons may be the first elements in the olfactory pathway that respond to sex-specific stimuli.[15] Therefore, it is certain that there is a relationship between pheromones, olfaction and courtship.
Moths
Sex pheromones are an important factor in finding a mating partner. When a female releases chemicals, the mate search is initiated, and the male moths begin their upwind motion toward their potential partner. Sex pheromones in particular are associated with long-range chemical communication of sex substances used in signaling a mating partner.[1] Mate finding in moths involve sex pheromones that have the ability to propel long-distances and are emitted by the females abdominal glands in most cases.[17] Responsiveness to sounds or behaviors due to pre-exposure to pheromones is common within the moth species. Studies have shown that when sex pheromones are present, male moths have a decreased level of response to predation sounds versus pheromonal cues as seen in Spodoptera littoralis.[18] An increased responsiveness in the antennal lobe when pre-exposed to the sex pheromones shown in studies is considered a long-term effect exhibited post twenty-four hours and serves as an advantage for males where they can alter their performance in advance prior to encountering a female that is reproductively active [19] However, this is also a disadvantage where the moth’s fitness decreases since they require more maintenance associated with their long-term memory neural structures.[19]
Butterflies
Chemoreception of sexual odorants by male insects has been considered to be very effective and sharp.[1] The Bicyclus anynana species is known for their close-range pheromone response as opposed to the moths’ long-range pheromonal response.[20] As for the male butterfly of the subfamily Lycorea, they have a pair of brush like structures on their abdomens named “hair pencils” that produce odors. The odors are given off in their aerial path while trying to find a mate.[1] After finding a potential mate, the male induces the female by brushing the “hair pencils” against her antennae later leading to copulation.[1] Males release close-range pheromones from their hair pencils and folds on their wings.[20]
The androconia gland in butterflies is responsible for emission of scents from pheromones produced during the wing fluttering during courtship when attracting a female (Costanzo & Monteiro, 2007). In the colias species of butterflies, the glands are found on the wing and are released during the ‘wing clapping’ stage of courtship.[21] Males secreting the pheromonal cues not only have glands on their antennae but some Bicyclus species have patches of velvety scales located on the dorsal surface of their forewing where pheromones are released.[20] The released pheromones are received by olfactory receptors on the antennae.
The Pieris napi butterfly uses the release of citral as a male sex pheromone signal produced by males directed to females during courtship.[22] Most of the chemical cues produced by males are associated to a female response involving courtship, mate-choice, species-specific identification and sex-specific signals.[22] The scents are also said to influence male-male competition and forcing males to guard their mating territories. The citral pheromone is also released during male-male competition as pheromones are released during most male flight activity however; there is a less of a response to males as when compared to females. Females have higher antennae sensitivity to the citral pheromones rather than males, triggering a reduced reaction by males.[22]
Wasps
Parasitic wasps are carnivorous insects that feed on other insects. Behavioral studies have shown that males influence females reproductive behavior through chemical signaling, increasing the male’s reproductive success.[23] During ejaculation, males release pheromones along with sperm which induce psychological and behavioral changes in females such as rejection of courting males.[23] The behavioral changes induced during the first copulation later enables the male to father numerous offspring of the same female.[23]
Much insect behavior involves a high male-male competition for a receptive female and the male is usually responsible for releasing sex pheromones in an attempt to attract a female. During male-male competition when racing to a female, the release of pheromone serves as an indication to the male of genetic quality where males are more attracted to a female that releases a large amount of pheromones to attract them.[23]
Spiders
Two types of pheromones emitted by spiders include contact and airborne pheromones. Airborne pheromones are for long-range use and are not successful in determining a female’s location due to aggregation (Gaskett, 2007). Contact pheromones provide specific information on female’s location and qualities which is vital for cannibalistic species allowing a potential mate assess and reject a female prior to entering her web for mating (Gaskett, 2007). Males have chemoreceptors located on their pedipalps and forelegs that are able to detect the strong pheromones emitted by females. The female desert spider, Agenelopsis aperta, is part of the Agenelidae family which use volatile pheromones to attract males (Schulz, 2013). The common spider family, Linyphiidae, is well known for their silk-rich webs. Pheromones are largely produced during web production in large amounts therefore when a male enters the web to begin mating; they cut away the threads of the web and roll them up. The ultimate cause of this behavior is to reduce the evaporation of the attracting pheromone and decrease the chances of interruption by a competing male since courtship is a timely process (Schulz, 2013).
In most cases of spider mating, sex pheromones are emitted by the female and received by the male. Female spiders directly release sex pheromones from their body cuticle or web silk. An advantage of not emitting volatile pheromones from a gland allows for spiders to catch prey and attract mating partners (Gaskett, 2007). Male spiders are often choosy and prefer virgin females (Gaskett, 2007). The first mating with a female is important as possible future concerns include: sperm priority and future males may be disinterested in a female that is not a virgin (Gaskett, 2007).
Earthworms
Earthworms are hermaphrodites, that is, they have both male and female sexual organs. Although most earthworm matings occur between two different individuals (outcrossing) some earthworm lineages are mostly parthenogenetic. In Hormogaster samnitica and Hormogaster elisae transcriptomes, DNA libraries were sequenced and two pheromones, Attractin and Temptin, were detected in all tissue samples of both species.[24] These pheromones likely act as attractants that promote outcrossing.
Mealworm beetle
A sex pheromone released by male Tenebrio molitor has been identified[25] T. molitor females are more attracted to pheromonal odors of outbred males than of inbred males.[26] This suggests that inbreeding reduces the attractiveness of male sexual signaling.
Sea hare
Aplysia is a genus of sea hares that is a clade of large sea slugs, marine gastropod mollusks. Aplysia californica is a simultaneous hermaphrodite so that adult organisms have both male and female sexual organs at the same time. Potent water-borne phermones are employed in promoting and maintaining mating between different individuals.[27]
Amphibians
Frogs and salamanders behave similarly through the use of chemical communication as a source of survival (Waldman, 2004). For example, the tree frog Litoria splendida secretes several biologically active peptides (Rajchard, 2005). An aquatic female usually attracts pheromones secreted by the parotid and rostral glands of this particular frog species (Rajchard, 2005). There was no discrimination found between frogs and their own odor along with their surroundings within their home range (Waldman, 2004). As in many animals, frogs adapt to their environment and can sense several odors surrounding them. Frogs remain under rocks and secluded during daylight hours and emerge at night therefore they highly rely on chemical signals to assess their surroundings prior to emerging (Waldman, 2004). By sensing chemical signals such as pheromones, frogs can become aware of potential competitors nearby. Chemosignals serve as a basis of communication to enhance the fitness of the signalers, which serves as an ultimate cause for the frogs daily activity and reactions to their environment (Waldman, 2004).
Salamanders also exhibit sexual roles of pheromones and their interactions with hormones where males of salamanders of the Plethodontidae family deliver pheromones through their chin gland in order to increase the female receptivity and mate choice (Rajchard, 2005). This pheromonal activity is said to be just as effective as the conspecific pheromones associated with moths and their receptivity to the pheromones released. Not only is female receptivity increased but male courtship success is also increased as in terrestrial salamanders where the pheromones are received by the accessory olfactory system, known for detecting pheromones (Rajchard, 2005). Salamanders can also distinguish between chemical cues of their own and of their surroundings therefore they are able to differentiate between mates and creatures within their environment (Waldman, 2004).
Lizards and snakes
The chemoreception system is heavily used by lizard and snake species because they produce chemical secretions that are often deposited in urine, feces or substrate scents in order to attract mates (Martín & López, 2012). The chemicals in the scent or trailing marks of lizards and snakes may give information on sex, body size, or age, which can then be used by females to detect areas that are scent marked by preferred potential males (Martín & López, 2012). Many snakes, just as many bird species, rely on their chemosensory abilities to detect mates (Shine & Mason, 2012). Scents are detected in two ways, through olfaction or airborne cues through the nostril or vomerolfaction where substrates are accessed through the forked tongue and vomeronasal system (Mason & Parker, 2010). The vomeronasal system is the driving force in sexual behavior of snakes and olfaction is used to develop underlying information about their prey (Shine & Mason, 2012). Chemical cues of snakes are often incapable of diffusing through air as they are large epidermal lipids therefore they must use tongue-flicking techniques to determine characteristics of potential mates (Shine & Mason, 2012). In both, lizards and snakes, substrate-borne cues are preferred over airborne cues however, if molecules are small enough to diffuse through air, then olfaction is preferred (Shine & Mason, 2012).
Male lizards have a way of “luring” females to their territories through food scent marks as many females are usually interested in the quality of the territory that the male defends rather that the male himself (Martín & López, 2012). This increases male-male competition for territories where males want to occupy favorable areas with many food sources and resources in order to attract females (Martín & López, 2012). Lizards usually use scent marks to determine the quality of the male occupying the territory (i.e. fitness, health, immune response) or the presence of food and resources, meaning the territory is of high quality (Martín & López, 2012). The Carpetan rock lizard, Iberolacerta cyreni, is a polygynandrous species that is known for their discrimination of scent marks based on age (Martín & López, 2013). Studies have shown that females were more attracted to pheromones produced by older males as they are able to produce more pheromones than younger males and females also preferred areas occupied by many males rather than one where there is a higher level of signal (Martín & López, 2013).
In other lizard species, such as the P. hispanicus, body coloration is used along with odor cues (López et al., 2002). Males are often sexual dichromatic, where one sex displays brighter colors than females on their belly (López et al., 2002). Over all, it was seen that most lizards prefer odor cues over color patterns when choosing a mate (López et al., 2002). Tongue-flick explorations are usually followed by reception of chemical cues to confirm a suitable female is in close-range since olfactory cues are more favorable when in close-range rather than color cues, which are preferred in long-range mating (López et al., 2002).
Birds
A chemical communication in vertebrates is not as important as visual and auditory communication and is widely understudied for many species such as birds. For the spotless starling Sturnus unicolor, a study has shown that the starling is able to discriminate the sex within their species using olfactory cues. The hormones secreted by the uropygial gland convey information on sex, age and reproductive status.[28] The uropygial gland is an opening located on most avian species towards the base of the tail. The gland secretes an oily fluid associated with preening, or cleaning of the feathers. The uropygial gland itself is said to be associated with the secretion of specific chemical cues enabling the functioning of the gland as a chemical signal used in mate choice.[28]
Chemical cues are not the only factor when it comes to secretions by the uropygial gland. The sex, age and reproductive status are all factors as the sex is important as males are usually searching for females and vice versa for females; however, they are all attracted to male scents in some way. Age is an important factor as birds with 12-14 day old nestlings are almost fully feathered causing lower levels of the main component in adults (hexadecanol) and greater proportions of methyl ketones compared with adults. This could be accredited to differences in diet or differences in the availability of resources.[28] During the breeding period, adults release an increased level of pheromones also since their uropygial glands are larger while raising their nestlings.[28] Intrasexual aggression is exhibited when males respond to other males pheromones released by the uropygial gland in order to mark their social dominance and their competitor territories.[28] Intrasexual competition accounts for the preference by males for other male scents. Most of the blends of excretions are species-specific therefore many avian species are aware of their own species secretions making them less receptive to the cues released.
Mice
Mice can distinguish close relatives from more distantly related individuals on the basis of scent signals.[29] This allows mice to avoid mating with close relatives and to minimize inbreeding. Jimenez et al.[30] showed that the inbreeding of mice derived from wild populations significantly reduced survival when such mice were reintroduced into a natural habitat.
Humans
While humans are highly dependent upon visual cues, when in close proximity smells also play a role in sociosexual behaviors. An inherent difficulty in studying human pheromones is the need for cleanliness and odorlessness in human participants.[31] Experiments have focused on three classes of putative human pheromones: axillary steroids, vaginal aliphatic acids, and stimulators of the vomeronasal organ.
Axillary steroids are produced by the testes, ovaries, apocrine glands and adrenal glands.[32] These chemicals are not biologically active until puberty when sex steroids influence their activity.[33] The activity change during puberty provides evidence for the idea that human beings communicate through odors.[32] Several axillary steroids have been described as human pheromones: androstadienol, androstadienone, androstenone, androstenol, and androsterone.
- Androstenol is the putative female pheromone.[33] In a 1978 study by Kirk-Smith, people wearing surgical masks treated with androstenol or untreated were shown pictures of people, animals and buildings and asked to rate the pictures on attractiveness.[34] Individuals with their masks treated with androstenol rated their photographs as being "warmer" and "more friendly".[34] The best-known case study involves the synchronization of menstrual cycles among women based on unconscious odor cues, the McClintock effect, named after the primary investigator, Martha McClintock, of the University of Chicago.[35][36] A group of women were exposed to a whiff of perspiration from other women. Depending on the time in the month the sweat was collected (before, during, or after ovulation) there was an association with the recipient woman's menstrual cycle to speed up or slow down. The 1971 study proposed two types of pheromone involved: "One, produced prior to ovulation, shortens the ovarian cycle; and the second, produced just at ovulation, lengthens the cycle". However, recent studies and reviews of the methodology have called the validity of her results into question.[37][38]
- Androstenone is postulated to be secreted only by men as an attractant for women and also thought to be a positive effector for their mood.[further explanation needed] It seems to have different effects on women, depending on where a female is in her menstrual cycle, with the highest sensitivity to it during ovulation.[33] In 1983, study participants exposed to androstenone were shown to undergo changes in skin conductance.[39] Androstenone has been found to be perceived as more pleasant to men at a woman’s time of ovulation. It is hypothesized that this may be a way for a male to detect an ovulating female who would be more willing to be involved in sexual interaction.[31]
There have been some authors such as Joseph Stromberg who claim that "we have no evidence human pheromones even exist".[40]
Mate choice and sexual selection
Males usually compete for scarce females, which make adaptive choices based on male traits. The choice can benefit the female directly and/or genetically. An example is female tiger moths (Utetheisa ornatrix) choosing males that produce the most pheromone; an honest signal of the amount of protective alkaloids the male has, as well as an indicator of the size of female offspring (females fertilised by such males lay more eggs).[2] Male cockroaches form dominance hierarchies based on pheromone "badges", while females use the same pheromone for male choice.[41]
In most species the non-limiting sex calls. Some female moths signal, but this is cheap/low risk; it means the male has to fly to her (high risk). This mirrors communication with other sensory modalities, e.g. male frogs croak; male birds are usually colourful. Male long-range pheromone signals may be associated with patchy resources for the female. In some species both sexes signal. Males can sometimes attract other males instead, the sex pheromone acting as an aggregation pheromone.[2]
External fertilization and chemical duets
It is likely that most externally fertilizing species (e.g. marine worms, sea urchins) coordinate their sexual behaviour (release of sperm and eggs) using pheromones. This coordination is very important because sperm are diluted easily, and also die after a short amount of time.[2]
The main selective advantage of outcrossing compared to inbreeding appears to be that outcrossing promotes the masking of deleterious recessive alleles, while inbreeding promotes their harmful expression.[42][43]
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UpToDate Contents
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- 1. 思春期の性 adolescent sexuality
- 2. セクシャルマイノリティの若年者:プライマリケアの概要 sexual minority youth overview of primary care
- 3. 卵巣の性索間質腫瘍の概要 overview of sex cord stromal tumors of the ovary
- 4. ゲイの男性および男性間性交渉者のプライマリケア primary care of gay men and men who have sex with men
- 5. 性行為に伴う一次性頭痛 primary headache associated with sexual activity
English Journal
- Efficient Association between PGF2α and Methyl 4-hydroxybenzoate Sex Pheromone Prior to Electroejaculation in Dogs.
- Santos I, Ramos C, Ramos J, Oliveira R, Cunha I.SourceUniversidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, Rio de Janeiro State, Brazil.
- Reproduction in domestic animals = Zuchthygiene.Reprod Domest Anim.2013 Feb;48(1):160-4. doi: 10.1111/j.1439-0531.2012.02123.x. Epub 2012 Jun 27.
- Electroejaculation is a technique that can be used to collect semen from canines, but its use with this group of animals is restricted by low success rate and low semen quality. Here, we evaluated whether pharmacological and sexual sensory stimuli, which may affect ejaculation, can increase electroe
- PMID 22734461
- Pheromonal bile acid 3-ketopetromyzonol sulfate primes the neuroendocrine system in sea lamprey.
- Chung-Davidson YW, Wang H, Siefkes MJ, Bryan MB, Wu H, Johnson NS, Li W.AbstractABSTRACT: BACKGROUND: Vertebrate pheromones are known to prime the endocrine system, especially the hypothalamic-pituitary-gonadal (HPG) axis. However, no known pheromone molecule has been shown to modulate directly the synthesis or release of gonadotropin releasing hormone (GnRH), the main regulator of the HPG axis. We selected sea lamprey (Petromyzon marinus) as a model system to determine whether a single pheromone component alters the output of GnRH.Sea lamprey male sex pheromones contain a main component, 7alpha, 12alpha, 24-trihydroxy-5alpha-cholan-3-one 24-sulfate (3 keto-petromyzonol sulfate or 3kPZS), which has been shown to modulate behaviors of mature females. Through a series of experiments, we tested the hypothesis that 3kPZS modulates both synthesis and release of GnRH, and subsequently, HPG output in immature sea lamprey.
- BMC neuroscience.BMC Neurosci.2013 Jan 20;14(1):11. [Epub ahead of print]
- ABSTRACT: BACKGROUND: Vertebrate pheromones are known to prime the endocrine system, especially the hypothalamic-pituitary-gonadal (HPG) axis. However, no known pheromone molecule has been shown to modulate directly the synthesis or release of gonadotropin releasing hormone (GnRH), the main regulato
- PMID 23331321
- De Novo Biosynthesis of Sexual Pheromone in the Labial Gland of Bumblebee Males.
- Záček P, Prchalová-Horňáková D, Tykva R, Kindl J, Vogel H, Svatoš A, Pichová I, Valterová I.SourceInstitute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6 (Czech Republic); Faculty of Science, Charles University, Albertov 8, 128 40 Prague 2 (Czech Republic).
- Chembiochem : a European journal of chemical biology.Chembiochem.2013 Jan 16. doi: 10.1002/cbic.201200684. [Epub ahead of print]
- De novo biosynthesis of male sex pheromone from two bumblebee species (Bombus terrestris and Bombus lucorum) was studied by using in vitro incubations of labial glands (LGs) with radioactive [1,2-(14) C]acetate and deuterated [D(3) ]acetate. The labeled substrate was incorporated into several types
- PMID 23325667
Japanese Journal
- 野菜害虫発生予察用フェロモントラップに特異的に混入する非標的種
- 河野 勝行
- 植物防疫 69(9), 573-577,図巻頭1p, 2015-09
- NAID 40020576602
- Enantioselective synthesis of the sex pheromone of the grey pineapple mealybug, Dysmicoccus neobrevipes (Hemiptera: Pseudococcidae), for determination of the absolute configuration
- Tabata Jun,Ohno Suguru
- Applied entomology and zoology 50(3), 341-346, 2015-08
- NAID 40020571095
- ヨトウガの性フェロモンに対する触角電位応答
- 小林 充,片岡 崇,青沼 仁志 [他]
- 農業食料工学会誌 = Journal of the Japanese Society of Agricultural Machinery and Food Engineers 77(3), 179-185, 2015-05
- NAID 40020473644
Related Links
- With a name like Pure Sex Pheromone Spray, there hardly seems much need for any further explanation. It simply mixes science with the art of seduction, with pheromones that make you irresistible to the opposite sex. Put the ...
★リンクテーブル★
リンク元 | 「性フェロモン」「sex attractant」 |
関連記事 | 「sex」「pheromone」 |
「性フェロモン」
- 英
- sex pheromone
- 関
- 性的誘引物質
「sex attractant」
「sex」
- n.
「pheromone」