Determination of markers of sperm function, accessory sex gland secretion and silent male genital tractinflammation is of considerable diagnostic value in the evaluation of male infertility. The introduction of bioche...Determination of markers of sperm function, accessory sex gland secretion and silent male genital tractinflammation is of considerable diagnostic value in the evaluation of male infertility. The introduction of biochemicaltests into the analysis of male factor has the advantage that standardized assays with a coefficient of variationcharacteristic of clinical chemistry are performed, in contrast to biological test systems with a large variability.Biochemical parameters may be used in clinical practice to evaluate the sperm fertilizing capacity (acrosin, aniline blue,ROS), to characterize male accessory sex gland secretions (fructose, α-glucosidase, PSA), and to identify men withsilent genital tract inflammation (elastase, C'3 complement component, coeruloplasmin, IgA, IgG, ROS).展开更多
Social parasitic Hymenopterans have evolved morphological, chemical, and behavioral adaptations to overcome the sophisticated recognition and defense systems of their social host to invade host nests and exploit their...Social parasitic Hymenopterans have evolved morphological, chemical, and behavioral adaptations to overcome the sophisticated recognition and defense systems of their social host to invade host nests and exploit their worker force. In bumblebees, so- cial parasitism appeared in at least 3 subgenera independently： in the subgenus Psithyrus consisting entirely of parasitic species, in the subgenus Alpinobombus with Bombus hy- perboreus, and in the subgenus Thoracobombus with B. inexspectatus. Cuckoo bumblebee males utilize species-specific cephalic labial gland secretions for mating purposes that can impact their inquiline strategy. We performed cephalic labial gland secretions in B. hyperboreus, B. inexspectatus and their hosts. Males of both parasitic species exhibited high species specific levels of cephalic gland secretions, including different main com- pounds. Our results showed no chemical mimicry in the cephalic gland secretions between inquilines and their host and we did not identify the repellent compounds already known in other cuckoo bumblebees.展开更多
文摘Determination of markers of sperm function, accessory sex gland secretion and silent male genital tractinflammation is of considerable diagnostic value in the evaluation of male infertility. The introduction of biochemicaltests into the analysis of male factor has the advantage that standardized assays with a coefficient of variationcharacteristic of clinical chemistry are performed, in contrast to biological test systems with a large variability.Biochemical parameters may be used in clinical practice to evaluate the sperm fertilizing capacity (acrosin, aniline blue,ROS), to characterize male accessory sex gland secretions (fructose, α-glucosidase, PSA), and to identify men withsilent genital tract inflammation (elastase, C'3 complement component, coeruloplasmin, IgA, IgG, ROS).
文摘Social parasitic Hymenopterans have evolved morphological, chemical, and behavioral adaptations to overcome the sophisticated recognition and defense systems of their social host to invade host nests and exploit their worker force. In bumblebees, so- cial parasitism appeared in at least 3 subgenera independently： in the subgenus Psithyrus consisting entirely of parasitic species, in the subgenus Alpinobombus with Bombus hy- perboreus, and in the subgenus Thoracobombus with B. inexspectatus. Cuckoo bumblebee males utilize species-specific cephalic labial gland secretions for mating purposes that can impact their inquiline strategy. We performed cephalic labial gland secretions in B. hyperboreus, B. inexspectatus and their hosts. Males of both parasitic species exhibited high species specific levels of cephalic gland secretions, including different main com- pounds. Our results showed no chemical mimicry in the cephalic gland secretions between inquilines and their host and we did not identify the repellent compounds already known in other cuckoo bumblebees.
