scholarly journals Staphylococcus Pasteuri (BCVME2) Resident In Buffalo Cervical Vaginal Mucus (CVM) - A Potential Source of Estrus-Specific Sex Pheromone(s)

2021 ◽  
Author(s):  
Mahalingam Sriniva ◽  
R. L. Rengarajan ◽  
D. Dhanasekaran ◽  
M. A. Akbarsha ◽  
Govindaraju Archunan
Keyword(s):  
Sex Pheromone ◽  
Volatile Compounds ◽  
Sex Pheromones ◽  
Reproductive Tract ◽  
Bacterial Flora ◽  
Oestrous Cycle ◽  
Molecular Characteristics ◽  
Sexual Behaviours ◽  
Potential Source ◽  
Staphylococcus Pasteuri

Abstract There are microbes resident in the reproductive tract, some of which could be pathogenic while a few others would, perhaps, play important roles in protecting the reproductive tract from infections. Volatile compounds are known to play role as sex pheromones that attract the males for coitus during estrus or heat. It is likely that these compounds themselves are secondary metabolites of the bacterial flora resident in the vagina. In order to substantiate this hypothesis, bacteria were isolated from cervico-vaginal mucus (CVM) of buffalo during various phases of the oestrous cycle and identified, based on morphological, biochemical and molecular characteristics, as Bacillus during preestrus as well as diestrus, and Staphylococcus during all phases of the oestrous cycle. But, the populations of Staphylococcus differed between different phases of the oestrous cycle, the predominant forms being S. warneri (BCVMPE1_1) during preestrus, S. pastueri (BCVME2) during oestrus and S. epidermis (BCVMDE3) during diestrus. Mice, when used as sensors, efficiently differentiated the oestrus-specific S. pastueri (BCVME2) from the others. HS-GC-MS analysis showed that S. pastueri (BCVME2) produces key volatile compounds viz., acetic, propanoic, isobutyric, butyric, isovaleric and valeric acids. In addition, it is evidenced that S. pasteuri (BCVME2) volatiles influence the sexual behaviours such as flehmen and mounting of the bull. Thus, the paper reports that S. pasteuri (BCVME2) is the potential source of vaginal pheromone(s) during oestrus in buffalo.

Staphylococcus pasteuri (BCVME2) Resident in Buffalo Cervical Vaginal Mucus: A Potential Source of Estrus-Specific Sex Pheromone(s)

2021 ◽  
Author(s):  
Mahalingam Srinivasan ◽  
Rengasamy Lakshminarayanan Rengarajan ◽  
Dharmadurai Dhanasekaran ◽  
Mohammad Abdulkader Akbarsha ◽  
Govindaraju Archunan
Keyword(s):  
Sex Pheromone ◽  
Potential Source ◽  
Staphylococcus Pasteuri

Sex Pheromones in Nereids: Volatile Compounds of the Coelomic Fluid of Nereis virens

1990 ◽  
Vol 45 (7-8) ◽  
pp. 924-926 ◽  
Author(s):  
E. Zeeck ◽  
J. D. Hardege
Keyword(s):  
Sex Pheromone ◽  
Volatile Compounds ◽  
Sex Pheromones ◽  
Coelomic Fluid ◽  
Nereis Virens ◽  
Platynereis Dumerilii ◽  
Minor Compounds

Abstract Volatile compounds of the pheromone bouquet of Nereis virens have been isolated and identified from the coelomic fluid of ripe sub-heteronereids. One of the minor compounds is the sex pheromone of Platynereis dumerilii, 5-methyl-3-heptanone.

Wnt-7a maintains appropriate uterine patterning during the development of the mouse female reproductive tract

Development ◽  
1998 ◽  
Vol 125 (16) ◽  
pp. 3201-3211 ◽  
Author(s):  
C. Miller ◽  
D.A. Sassoon
Keyword(s):  
Reproductive Tract ◽  
Hox Genes ◽  
Cell Types ◽  
Female Reproductive Tract ◽  
Molecular Characteristics ◽  
Anteroposterior Patterning ◽  
Stratified Epithelium ◽  
Distinct Cell ◽  
Hoxa Gene Expression ◽  
Posterior Shift

The murine female reproductive tract differentiates along the anteroposterior axis during postnatal development. This process is marked by the emergence of distinct cell types in the oviduct, uterus, cervix and vagina and is dependent upon specific mesenchymal-epithelial interactions as demonstrated by earlier heterografting experiments. Members of the Wnt family of signaling molecules have been recently identified in this system and an early functional role in reproductive tract development has been demonstrated. Mice were generated using ES-mediated homologous recombination for the Wnt-7a gene (Parr, B. A. and McMahon, A. P. (1995) Nature 374, 350–353). Since Wnt-7a is expressed in the female reproductive tract, we examined the developmental consequences of lack of Wnt-7a in the female reproductive tract. We observe that the oviduct lacks a clear demarcation from the anterior uterus, and acquires several cellular and molecular characteristics of the uterine horn. The uterus acquires cellular and molecular characteristics that represent an intermediate state between normal uterus and vagina. Normal vaginas have stratified epithelium and normal uteri have simple columnar epithelium, however, mutant uteri have stratified epithelium. Additionally, Wnt-7a mutant uteri do not form glands. The changes observed in the oviduct and uterus are accompanied by a postnatal loss of hoxa-10 and hoxa-11 expression, revealing that Wnt-7a is not required for early hoxa gene expression, but is required for maintenance of expression. These clustered hox genes have been shown to play a role in anteroposterior patterning in the female reproductive tract. In addition to this global posterior shift in the female reproductive tract, we note that the uterine smooth muscle is disorganized, indicating development along the radial axis is affected. Changes in the boundaries and levels of other Wnt genes are detectable at birth, prior to changes in morphologies. These results suggest that a mechanism whereby Wnt-7a signaling from the epithelium maintains the molecular and morphological boundaries of distinct cellular populations along the anteroposterior and radial axes of the female reproductive tract.

Sex pheromones of Callosobruchus subinnotatus and C. maculatus (Coleoptera: Bruchidae): congeneric responses and role of air movement

2000 ◽  
Vol 90 (2) ◽  
pp. 147-154 ◽  
Author(s):  
G.N. Mbata ◽  
S. Shu ◽  
S.B. Ramaswamy
Keyword(s):  
Sex Pheromone ◽  
Pest Management ◽  
Sex Pheromones ◽  
Air Flow ◽  
Latency Period ◽  
Air Movement ◽  
Sex Pheromone Components ◽  
Pheromone Components ◽  
Callosobruchus Subinnotatus

Females of Callosobruchus spp. are known to produce sex pheromones that attract males. These sex pheromones cannot be adopted for use in pest management without first investigating the responses of the males in the windless conditions of storage environments. Consequently, behavioural bioassays of Callosobruchus subinnotatus Pic males were conducted in an olfactometer in the absence of air-flow. Under these conditions males were found to be able to follow odour trails to the source. However, the latency period was longer in diffusional bioassays than for insects in a Y-tube olfactometer that provided directional wind cues. The highest percentage of males reached the pheromone source when components of the pheromones, (E)-3-methyl-2-heptenoic acid (E32A) and (Z)-3-methyl-2-heptenoic acid (Z32A), were formulated in a 50:50 or 25:75 ratio. Males of C. maculatus (Fabricius) responded to sex pheromone of C. subinnotatus, but males of C. subinnotatus did not respond to that of C. maculatus. The two sex pheromone components of C. subinnotatus are also constituents of C. maculatus sex pheromone. These two components may be potentially useful in monitoring the populations of both species in stored beans. It is postulated that (Z)-3-methyl-3-heptenoic acid (Z33A), the major component of the sex pheromone of C. maculatus, must have acted as an antagonist inhibiting response of C. subinnotatus to the sex pheromone of C. maculatus.

Enhancement of Attraction to Sex Pheromones of Spodoptera exigua by Volatile Compounds Produced by Host Plants

2004 ◽  
Vol 30 (10) ◽  
pp. 2037-2045 ◽  
Author(s):  
Jian-Yu Deng ◽  
Hong-Yi Wei ◽  
Yong-Ping Huang ◽  
Jia-Wei Du
Keyword(s):  
Volatile Compounds ◽  
Host Plants ◽  
Sex Pheromones ◽  
Spodoptera Exigua

ATTRACTION OF MALE GREEN APPLE BUGS, LYGOCORIS COMMUNIS (HEMIPTERA: MIRIDAE), TO CAGED FEMALES

1982 ◽  
Vol 114 (8) ◽  
pp. 765-766 ◽  
Author(s):  
G. Boivin ◽  
R. K. Stewart
Keyword(s):  
Sex Pheromone ◽  
Sex Pheromones ◽  
Lygus Lineolaris ◽  
Pest Species ◽  
Apple Orchards ◽  
Lygus Hesperus ◽  
Annual Cycles ◽  
Pheromone Emission

In Quebec apple orchards, pheromones are used to monitor a number of pest species (Rivard et al. 1978; Paradis et al. 1979). However, few studies have looked for the presence of sex pheromones in mirids. Scales (1968) detected the presence of sex pheromone in a mirid, Lygus lineolaris (P. de B.), as did Strong et al. (1970) for Lygus hesperus Knight. Subsequently, the daily and annual cycles of pheromone emission in Distantiella theobroma (Dist.) (King 1973) and Helopeltis clavifer (Walker) (Smith 1977) were established.

The aerobic bacterial flora of the reproductive tract of the mare

1971 ◽  
Vol 88 (3) ◽  
pp. 58-61 ◽  
Author(s):  
P. Scott ◽  
P. Daley ◽  
G. Baird ◽  
S. Sturgess ◽  
A. Frost
Keyword(s):  
Reproductive Tract ◽  
Bacterial Flora
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