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32 results for “accessory glands”
Fig. 5 in Female remating inhibition and fitness of Bactrocera dorsalis (Diptera: Tephritidae) associated with male accessory glands
Fig. 5. Fecundities of Bactrocera dorsalis females of various mating statuses. A. Lifetime mean number (± S.E.) of eggs laid per female, and B. Mean oviposition rates per week of Bactrocera dorsalis females of various mating statuses. G1, virgin females housed alone (n = 30); G2, females mated once (n = 26); G3, females mated twice with different virgin males (n = 32); G4, females mated with males that had mated on the previous day (n = 29); G5, females housed with males at a sex ratio of 1: 1 (n = 23); G6, females housed with males at a sex ratio of 1♀: 23 (n = 24). Different letters indicate significant differences.
Fig. 1 in Female remating inhibition and fitness of Bactrocera dorsalis (Diptera: Tephritidae) associated with male accessory glands
Fig. 1. Male accessory glands of Bactrocera dorsalis. One pair of long tube mesodermal accessory glands (MAG) and 3 pairs of long, convoluted, complex and fragile ectodermal accessory glands (EAG).
Fig. 6 in Female remating inhibition and fitness of Bactrocera dorsalis (Diptera: Tephritidae) associated with male accessory glands
Fig. 6. Fertilities of Bactrocera dorsalis females of various mating statuses. A. Lifetime mean percent hatch of eggs laid by females of G2 – G6 mating statuses, B. Mean percent hatch of eggs laid each week by females of G2 – G6 mating statuses. G2, females mated once (n = 18); G3, females mated twice with virgin males (n= 20); G4, females mated with non-virgin males (n = 18); G5, females housed with males with a sex ratio of 1: 1 (n = 18); G6, females housed with males with a sex ratio of 1♀: 23 (n = 19). Data for the unfertilized eggs laid by virgin females in group G1 and for females that produced fewer than 5 eggs in total were not analyzed. Different letters indicate significant differences.
Fig. 3 in Female remating inhibition and fitness of Bactrocera dorsalis (Diptera: Tephritidae) associated with male accessory glands
Fig. 3. Mean percentage of successful matings among Bactrocera dorsalis of different mating statuses. M1, matings of 8-day old virgin females with of 8-day old virgin males on day 1; M2, matings of 9-day old virgin females with 9-day old virgin males on day 2; M3, matings of 10-day old virgin females with 10-day old males on day 3; M4, matings on day 2 of virgin females with males that had mated on day 1; M5, both first and second matings with virgin males; M6, first mating to non-virgin male and remating to virgin male. Different letters indicate significantly different proportions.
Fig. 6 in Comparative transcriptome analysis of three Bactrocera dorsalis (Diptera: Tephritidae) organs to identify functional genes in the male accessory glands and ejaculatory duct
Fig. 6. Four examples of the tissue expression profiling of unknown distinct unigenes (>500 bp) expressed highly in male accessory glands and ejaculatory duct tissue of Bactrocera dorsalis. Relative expression levels were determined as described in Fig. 5.
Fig. 4 in Comparative transcriptome analysis of three Bactrocera dorsalis (Diptera: Tephritidae) organs to identify functional genes in the male accessory glands and ejaculatory duct
Fig. 4. Kyoto encyclopedia of gene and genomes (KEGG) analysis of unigenes expressed highly in male accessory glands and ejaculatory duct tissue of Bactrocera dorsalis. Each category contains more than 1 unigene sequences.
Fig. 2 in Comparative transcriptome analysis of three Bactrocera dorsalis (Diptera: Tephritidae) organs to identify functional genes in the male accessory glands and ejaculatory duct
Fig. 2. Clusters of orthologous groups (COG) functional classification of unigenes expressed highly and specifically in male accessory glands and ejaculatory duct tissue of Bactrocera dorsalis.
Fig. 1 in Comparative transcriptome analysis of three Bactrocera dorsalis (Diptera: Tephritidae) organs to identify functional genes in the male accessory glands and ejaculatory duct
Fig. 1. Statistics of sequences expressed specifically in each analyzed tissue of Bactrocera dorsalis.
Fig. 5 in Comparative transcriptome analysis of three Bactrocera dorsalis (Diptera: Tephritidae) organs to identify functional genes in the male accessory glands and ejaculatory duct
Fig. 5. Six examples of the tissue expression profiling of predicted distinct unigenes (>500 bp) expressed highly in male accessory glands and ejaculatory duct tissue of Bactrocera dorsalis. Relative expression levels were determined by qRT-PCR in head (HE), thorax (TH), abdomen (AB), midgut (MG), fat body (FB), Malpighian tubules (MT), testes (TE), and male accessory glands and ejaculatory duct (MAG) samples from B. dorsalis males. Relative expression levels were calculated based on the value in head, which was ascribed an arbitrary value of 1. Different letters above the bars indicate significant differences based on Tukey's test (P ≤ 0.05).
Fig. 3 in Comparative transcriptome analysis of three Bactrocera dorsalis (Diptera: Tephritidae) organs to identify functional genes in the male accessory glands and ejaculatory duct
Fig. 3. Gene ontology (GO) classification of unigenes expressed highly in male accessory glands and ejaculatory duct tissue of Bactrocera dorsalis.
FIGURES 90–98. Noideattella omby new species. 90. Genitalia female, dorsal view. 91. Receptaculum accessory gland ducts, dorsal view. 92. Metatarsus and tarsus I female, retrolateral view. 93. Tibia 1 female, retrolateral view. 94. Chelicerae male, anterior view. 95. Embolus, dorsal view. 96. Embolus, retrolateral view. 97. Embolus, prolateral view. 98 in Indian Ocean goblin spiders (Araneae, Oonopidae): four new species of pelicinoids from Madagascar, with a redescription of the type species Silhouettella curieusei Benoit, 1979
FIGURES 90–98. Noideattella omby new species. 90. Genitalia female, dorsal view. 91. Receptaculum accessory gland ducts, dorsal view. 92. Metatarsus and tarsus I female, retrolateral view. 93. Tibia 1 female, retrolateral view. 94. Chelicerae male, anterior view. 95. Embolus, dorsal view. 96. Embolus, retrolateral view. 97. Embolus, prolateral view. 98. Embolus, ventral view. Scale bars = 50 µm, except emboli and Receptaculum accessory gland ducts = 10 µm.
FIGURES 73–81. Silhouettella perisalma new species. 73. Genitalia female, dorsal view. 74. Receptaculum accessory gland ducts, dorsal view. 75. Tarsal organ female, dorsal view. 76. Chelicerae male, anterior view. 77. Pedicel area male, dorsal view. 78. Embolus, dorsal view. 79. Embolus, prolateral view. 80. Embolus, retrolateral view. 81 in Indian Ocean goblin spiders (Araneae, Oonopidae): four new species of pelicinoids from Madagascar, with a redescription of the type species Silhouettella curieusei Benoit, 1979
FIGURES 73–81. Silhouettella perisalma new species. 73. Genitalia female, dorsal view. 74. Receptaculum accessory gland ducts, dorsal view. 75. Tarsal organ female, dorsal view. 76. Chelicerae male, anterior view. 77. Pedicel area male, dorsal view. 78. Embolus, dorsal view. 79. Embolus, prolateral view. 80. Embolus, retrolateral view. 81. Embolus, ventral view. Scale bars = 50 µm, except emboli = 10 µm, female receptaculum accessory gland and tarsal organ 75 = 2 µm.
Tactic-specific antimicrobial activity suggests a parental care function for accessory glands in a marine toadfish
<p>Males of some species possess extra reproductive organs called accessory glands which are outgrowths of the testes or sperm duct. These organs have a well-established role in reproduction; however, they also appear to have other important functions that are less understood. Here we investigate the function of the highly complex accessory glands of a marine toadfish, <em>Porichthys notatus, </em>a fish with two reproductive male types: large care-providing 'guarder' males and small non-caring 'sneaker' males. While both male types have accessory glands, guarder male accessory glands are much larger relative to their body size. We show that accessory gland fluids strongly inhibit the growth of bacterial genera associated with unhealthy eggs and have no effect on the growth of strains isolated from healthy eggs. This antibacterial effect was particularly pronounced for extracts from guarder males. Furthermore, we demonstrate that both healthy and unhealthy plainfin midshipman eggs have diverse but distinct microbial communities that differ in their composition and abundance. The highly specific inhibitory capacity of accessory gland fluid on bacteria from unhealthy eggs was robust across a wide range of ecologically relevant temperatures and salinities. Collectively, these ecological and molecular observations suggest a care function for the accessory gland, mediated by antimicrobial agents.</p>
FIGURE 7. Penis and accessory gland. A, D in Monograph of the Australian Bithyniidae (Caenogastropoda: Rissooidea)
FIGURE 7. Penis and accessory gland. A, D – Gabbia campicola, A, ventral view, C.332829, D, dorsal view, USNM, 803665; B – Gabbia rotunda, ventral view, AMS, C.400134; C – Gabbia davisi, ventral view, AMS, C.417617; E – Gabbia beecheyi, ventral view, AMS, C.332843; F, G – Gabbia fontana, dorsal view, AMS, C.380863; H – Gabbia spiralis, dorsal view, AMS, C.331849; I, J – Gabbia vertiginosa, dorsal view, AMS, C.203392, I, enlargement of distal end of accessory lobe; K – Gabbia adusta, dorsal view, AMS, C.203394. Scales: 500 m.
Effect of Graminex on Infertility Related to Male Accessory Glands Inflammation
ClinicalTrials.gov study NCT06974175. IPD Sharing: Not stated. Countries: 1. Publications: 12.
Tactic-specific antimicrobial activity suggests a parental care function for accessory glands in a marine toadfish
Open the record for dataset details and reuse information.
Data from: Gene expression changes in male accessory glands during ageing are accompanied by reproductive decline in Drosophila melanogaster
Senescence is accompanied by loss of reproductive functions. Here we studied reproductive ageing in Drosophila melanogaster males and asked whether the expected decline in male reproductive success is due to diminished functionality of the male accessory gland. The male accessory gland produces the majority of seminal fluid proteins (SFPs) transferred to the female at mating. SFPs induce female post-mating changes and are key to male reproductive success. We measured age-dependent gene expression changes for five representative SFP genes in males from four different age groups ranging from one to six weeks after eclosion. Simultaneously, we also measured male reproductive success in post-mating traits mediated by transfer of these five SFPs. We found a decrease in male SFP gene expression with advancing age and an accompanying decline in male post-mating success. Hence, male reproductive senescence is associated with a decline in functionality of the male accessory gland. While overall individual SFP genes decrease in expression our results point towards the idea that the composition of an ejaculate might change with male age as the rate of change was variable for those five genes.
Data from: Early reproductive success in Drosophila males is dependent on maturity of the accessory gland
In a number of insect taxa, male sexual maturity is not always directly attained at adult eclosion. Sexual maturity is often defined behaviorally as mating success, or physiologically as the point when gametes are produced. Here, we show that the sexual maturation process in males is more complex than previously described and that a measure of maturity also needs to include post-mating traits. In many species mating success is tightly linked with size of the accessory gland (AG). The AG is the production site of a complex cocktail of proteins that are transferred to the female along with the sperm, and which impact on important functions for male reproductive success. Using Drosophila melanogaster we conducted comprehensive behavioral assays of several aspects of male reproductive fitness and demonstrated that the AG has to attain full maturity for males to reach full reproductive competence. We tested males from shortly after, and up to 6 days, post adult eclosion, and considered both pre- and post-copulatory traits. Young males are less likely to gain a mating and show significantly less courtship behavior. Young males that managed to obtain a mating however were inferior in many post-copulatory traits like sperm competitiveness and effectiveness in suppressing female remating. We monitored male AG development over the first 6 days after eclosion and found it to significantly increase in size over the entire period.
Data from: Hidden female physiological resistance to male accessory gland substances in a simultaneous hermaphrodite
To increase fertilization chances compared to rivals, males are favoured to transfer accessory gland proteins to females during mating. These substances, by influencing female physiology, cause alteration of her sperm usage and remating rate. Simultaneously hermaphroditic land snails with love-darts are a case in point. During courtship, a love-dart is pierced through the partner's body wall, thereby introducing accessory mucous gland products. This mucus physiologically increases paternity by inhibiting the digestion of donated sperm. The sperm, which are packaged in a spermatophore, are exchanged and received in an organ called the diverticulum. Because of its length, this organ was previously proposed to be a female anatomical adaptation that may limit the dart interference with the recipient's sperm usage. For reproductive success of the donor, an anatomically long spermatophore, relative to the partner's diverticulum, is beneficial since sperm can avoid digestion by exiting through the spermatophore's tail safely. However, the snail Eobania vermiculata possesses a diverticulum that is three times longer than the spermatophore it receives. Here we report that the love-dart mucus of this species contains a contraction-inducing substance that shortens the diverticulum, an effect that is only properly revealed when the mucus is applied to another helicid species, Cornu aspersum. This latter finding suggests that E. vermiculata may have evolved a physiological resistance to the manipulative substance received via the love-dart by becoming insensitive to it. This provides useful insight into evolution of female resistance to male manipulations, indicating that it can remain hidden if tested on a single-species.
Fig. 7 in Female remating inhibition and fitness of Bactrocera dorsalis (Diptera: Tephritidae) associated with male accessory glands
Fig. 7. Lifetime mean numbers (± S.E.) of offspring produced by Bactrocera dorsalis females of various mating statuses. G2, females mated once (n = 18); G3, females mated twice with different virgin males (n = 20); G4, females mated with non-virgin males (n = 18); G5, females housed with males with a sex ratio of 1: 1 (n = 18); G6, females housed with males with a sex ratio of 1♀: 23 (n = 19). Data for the unfertilized eggs laid by virgin females in group G1 and for females that produced fewer than 30 eggs and/or five offspring in total were not analyzed. Different letters indicate significant differences.
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