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1,150 results for “Genitive”
Figure 4. Male internal reproductive organs. A in The male genital tract and aedeagal components of the Diptera with a discussion of their phylogenetic significance
Figure 4. Male internal reproductive organs. A, Bibio flavihalter (Bibionidae) (dorsal view). B, Bibio flavihalter (Bibionidae) (dorsal view). acc gl cplx, accessory gland complex; ej dt, ejaculatory duct; tes, testis; vas df, vas deferens. Scale bars = 0.1 mm.
Figure 2 in The male genital tract and aedeagal components of the Diptera with a discussion of their phylogenetic significance
Figure 2. Male internal reproductive organs (dorsal view). A, Tipula oleracea L. (Tipulidae) [modified from Keuchenius (1913)]. B, Philorus vividis Kitakami (Blephariceridae) (accessory glands not observed) (scale bar = 0.1 mm). C, Lucilia sp. (Calliphoridae) [modified from Hori (1960)]. D, Trichocera annulata Meigen (Trichoceridae) [modified from Neumann (1958)]. E, Phlebotomus sp. (Psychodidae) [modified from Just (1973) and Perfil'ev (1968)]. F, Sylvicola sp. Anisopodidae [modified from Abul-Nasr (1950) and Dahl (1980)]. acc gl, accessory gland; aed, aedeagus; ej dt, ejaculatory duct; sem ves, seminal vesicle; spm pmp, sperm pump; tes, testis; vas df, vas deferens.
Figure 1 in The male genital tract and aedeagal components of the Diptera with a discussion of their phylogenetic significance
Figure 1. Male internal reproductive organs (dorsal view). A, Panorpa (Mecoptera), left testis removed [modified from Grell (1942)]. B, Nannochorista (Mecoptera), left testis removed, shaded areas mark discoloured regions (scale bar = 0.1 mm). C, Spilopsyllus (Siphonaptera), with ventral surface of accessory gland on right [modified from Mead-Briggs (1962)]. D, Xenos (Strepsiptera) [modified from Carcupino et al. (1995)]. acc gl, accessory gland; acc gl app, accessory gland appendix; ej dt, ejaculatory duct; epid, epididymis; p ej dt, proximal ejaculatory duct; sem ves, seminal vesicle; tes, testis; vas df, vas deferens.
Figures 10–17. Chrysina spp. genital structures. 10–15 in A new species of Chrysina Kirby (Coleoptera: Scarabaeidae: Rutelinae) from the Sierra Madre Occidental of Mexico, with notes on the type locality of Chrysina adelaida (Hope, 1841)
Figures 10–17. Chrysina spp. genital structures. 10–15) Male genital capsule dorsal (d), ventral (v) and lateral (l) habitus. 10–11) C. occidentalis holotype. 10) (d). 11) (v). 12–13) C. adelaida from Veracruz, Mexico. 12) (d). 13) (v). 14) C. occidentalis holotype (l). 15) C. adelaida from Veracruz, Mexico (l). 16–17) Female genital plates. 16) C. occidentalis from Sinaloa, Mexico. 17) C. adelaida from Veracruz, Mexico.
Figs 12–16. Male genital capsule. 12 in New records of cuckoo wasps (Hymenoptera, Chrysididae) from Russia with taxonomic notes
Figs 12–16. Male genital capsule. 12 – Chrysis inaequalis Dahlbom, ♂ (Italy, Aosta Valley); 13 – C. poetica Semenov, ♂ (Karachayevo-Cherkess Rep., Teberda Nat. Res.); 14 – C. mysticalis Linsenmaier (Spain, Girona); 15 – C. placida Mocsáry, ♂ (Orenburg Prov., Semenovka); 16 – C. sapphirina Semenov, ♂ (Tajikistan, Kondara). Scale bar: 1.0 mm.
Figs 1, 2 in A further note on Archachatina churchilliana and a description of the genital anatomy of Archachatina natalensis (Mollusca: Pulmonata: Achatinidae)
Figs 1, 2. Archachatina churchilliana. The same specimen at the age of one year (Fig. 1, length 68.5 mm) and three years (Fig. 2, length 93.5 mm).
Figure |. Hystrignathus splendidus sp. n. female. A Esophageal region, lateral view. B Cephalic end, internal view C Cephalic end, external view D Spines at level of the end of procorpus E Tail, lateral view F Vulva, lateral view G Egg. H Genital tract I Habitus, lateral view. in Two new species of nematode (Oxyurida, Hystrignathidae) parasites of Passalus interstitialis Escholtz, 1829 (Coleoptera, Passalidae) from Cuba and a new locality for Longior similis Morffe, Garcia & Ventosa, 2009
Figure |. Hystrignathus splendidus sp. n. female. A Esophageal region, lateral view. B Cephalic end, internal view C Cephalic end, external view D Spines at level of the end of procorpus E Tail, lateral view F Vulva, lateral view G Egg. H Genital tract I Habitus, lateral view.
Figures 19 in Xeropicta (Gastropoda, Hygromiidae) goes west: the first record of X. krynickii (Krynicki, 1833) for Montenegro, with a description of its shell and genital morphology, and an additional record of X. derbentina (Krynicki, 1836) for Italy
Figures 19. Genitalia of Xeropicta krynickii from Podgorica, Montenegro. 12 whole genitalia, gonad excluded; 3 inner structureof distal genitalia; 4 dart sac complex; 5 section of penial papilla; 6 section of vagina; 7 penial papilla; 8 digitiform glands; 9 inner structure of epiphallus.
Figures 1424 in Xeropicta (Gastropoda, Hygromiidae) goes west: the first record of X. krynickii (Krynicki, 1833) for Montenegro, with a description of its shell and genital morphology, and an additional record of X. derbentina (Krynicki, 1836) for Italy
Figures 1424. Genitalia of Xeropicta krynickii from Livadia (Sterea Ellada, Greece). 14 whole genitalia, gonad excluded; 15 inner structure of distal genitalia; 16 section of penial papilla; 17 section of epiphallus; 18 section of distal stylophore; 19 section of vagina; 20 digitiform glands; 21 mantle edge; 22 first hermaphrodite duct; 23 penial papilla; 24 dart sac complex.
Figures 1013. 1012 in Xeropicta (Gastropoda, Hygromiidae) goes west: the first record of X. krynickii (Krynicki, 1833) for Montenegro, with a description of its shell and genital morphology, and an additional record of X. derbentina (Krynicki, 1836) for Italy
Figures 1013. 1012 genitalia and jaw of Xeropicta krynickii from Podgorica, Montenegro. 10 mantle edge; 11 first hermaphrodite duct; 12 jaw; 13 whole genitalia, gonad excluded, ofXeropicta derbentina from Trieste (Italy).
Figures 2528. 2526 in Xeropicta (Gastropoda, Hygromiidae) goes west: the first record of X. krynickii (Krynicki, 1833) for Montenegro, with a description of its shell and genital morphology, and an additional record of X. derbentina (Krynicki, 1836) for Italy
Figures 2528. 2526 shells of Xeropicta krynickiifrom Podgorica, Montenegro; 27 shell of X. krynickii from Livadia (Beozia, Greece); 28 shell ofX. derbentina from Trieste (Italy).
Interaction of genital microbiota in infertile couples
<p>Bacteria colonise most of the human body and the genital tract is not an exception. While it has been known for decades that a vaginal microbiota exists, other genital sites have traditionally been viewed as sterile environments, with bacterial presence associated only with pathological conditions. However, recent studies identified specific patterns of bacterial colonisation in most genital sites. Shifts in the bacterial colonisation of the female genital tract have been linked to impairment of reproduction and adverse pregnancy outcomes, such as preterm birth.</p> <p>The goal of this project is to understand the association between the genital microbiota of couples seeking assisted procreation aid and the outcome of this treatment. Male and female partners will be studied as a unit (“couple microbiota”) and the interaction between their microbiota will be evaluated.</p> <p>We have characterized microbial samples coming from vaginal and penile swabs, as well as follicular fluid and semen, using next generation sequencing (16S rRNA profiling). The results were linked to clinical data of the patients included in the study and particularly to the results of the fertility treatment process. With this project, we aim to gain a better understanding of how the male genital microbiota could influence the lower (vagina) and upper (follicular fluid) female genital tracts.</p> <p>Github repository link: <a href="https://github.com/dfmemicrobiota/infertile_couples">https://github.com/dfmemicrobiota/infertile_couples</a></p>
FIGS. 61–80. Scopaeus. Mandibles, Genital segments. 61–71. Mandibles, dorsal. 61, 62. S. picipes. 63, 64. S in Generic Revisions Of The Scopaeina And The Sphaeronina (Coleoptera: Staphylinidae: Paederinae: Lathrobiini)
FIGS. 61–80. Scopaeus. Mandibles, Genital segments. 61–71. Mandibles, dorsal. 61, 62. S. picipes. 63, 64. S. chiriquensis sp. grp. (S. sp.). 65, 66. S. nitidus sp. grp. (S. sp.). 67–71. S. opacus sp. grp. (S. spp.). 72–77. Tergites IX, X. 72, 73. S. picipes. 72. Male. 73. Female. 74, 75. S. nitidus sp. grp. (S. sp.). 74. Male. 75. Female. 76–79. S. chiriquensis sp. grp. (S. sp.). 76. Male. 77. Female. 78. Lateral gonocoxal plates. 79. Sternite IX, male. 80. S. picipes, Lateral gonocoxal plates.
Рис. 6–11. ГенитаΛьные структуры самцов роΔа Celypha. 6 – C. laminaria sp. n.; 7 – C. capreolana; 8 – C. rurestrana; 9 – C. anatoliana; 10 – C. confictana; 11 – C. striana. 6 – генитаΛии (Λевая ваΛьва не изображена); 7–11 – ваΛьвы. Масштабная Λинейка 1 мм. Figs 6–11. Male genital structure of the genus Celypha. 6 – C. laminaria sp. n.; 7 – C. capreolana; 8 – C. rurestrana; 9 – C. anatoliana; 10 – C. confictana; 11 – C. striana. 6 – genitalia (left valve is not shown); 7–11 – valves. Scale bar 1 mm. in Two new species of leaf-rollers (Lepidoptera: Tortricidae) from the East Caucasus
Рис. 6–11. ГенитаΛьные структуры самцов роΔа Celypha. 6 – C. laminaria sp. n.; 7 – C. capreolana; 8 – C. rurestrana; 9 – C. anatoliana; 10 – C. confictana; 11 – C. striana. 6 – генитаΛии (Λевая ваΛьва не изображена); 7–11 – ваΛьвы. Масштабная Λинейка 1 мм. Figs 6–11. Male genital structure of the genus Celypha. 6 – C. laminaria sp. n.; 7 – C. capreolana; 8 – C. rurestrana; 9 – C. anatoliana; 10 – C. confictana; 11 – C. striana. 6 – genitalia (left valve is not shown); 7–11 – valves. Scale bar 1 mm.
Figure 1 in The first description of male of Raphignathus arcus Akyol (Acari: Raphignathidae) and a variation in the number of genital setae of its a female
Figure 1. Raphignathus arcus Akyol (male): A. Dorsal view of idiosoma, B. Ventral view of idiosoma, C. Leg I, D. Leg II, E. Leg III, F. Leg IV, G. Palp, H. Abnormal genital setae of female of R. arcus.
Interspecific introgression reveals a role of male genital morphology during the evolution of reproductive isolation in Drosophila
Rapid divergence in genital structures among nascent species has been posited to be an early-evolving cause of reproductive isolation, although evidence supporting this idea as a widespread phenomenon remains mixed. Using a collection of interspecific introgression lines between two Drosophila species that diverged ~240,000 years ago, we tested the hypothesis that even modest divergence in genital morphology can result in substantial fitness losses. We studied the reproductive consequences of variation in the male epandrial posterior lobes between Drosophila mauritiana and D. sechellia and found that divergence in posterior lobe morphology has significant fitness costs on several pre-fertilization and post-copulatory reproductive measures. Males with divergent posterior lobe morphology also significantly reduced the life span of their mates. Interestingly, one of the consequences of genital divergence was decreased oviposition and fertilization, which suggests that a sensory bias for posterior lobe morphology could exist in females, and thus posterior lobe morphology may be the target of cryptic female choice in these species. Our results provide evidence that divergence in genitalia can in fact give rise to substantial reproductive isolation early during species divergence, and they also reveal novel reproductive functions of the external male genitalia in Drosophila.
Figures 7–12. - Neohemisphaeriusguangxiensis sp. n. 7 Hind wing 8 Male genitalia, in lateral view 9 Aedeagus, in left view 10 Aedeagus, ventral view 11 Genital style, in profile view 12 Anal tube, in dorsal view.
Figures 7–12. - Neohemisphaeriusguangxiensis sp. n. 7 Hind wing 8 Male genitalia, in lateral view 9 Aedeagus, in left view 10 Aedeagus, ventral view 11 Genital style, in profile view 12 Anal tube, in dorsal view.
Rapid divergent evolution of internal female genitalia and the coevolution of male genital morphology revealed by micro-computed tomography
<p>Animal genitalia are thought to evolve rapidly and divergently in response to sexual selection. Studies of genital evolution have focused largely on male genitalia, with our understanding of female genital evolution relatively limited. The paucity of work on female genital morphology is likely due to problems faced in quantifying shape variation, due to their composition and accessibility. Here we use a combination of micro-computed tomography, landmark-free shape quantification, and phylogenetic analysis to quantify the rate of female genital shape evolution among 29 species of Antichiropus millipedes, and the coevolution of male genitalia. We found significant variation in female and male genital shape among species. While male genital shape showed significant phylogenetic signal, female genital shape did not. Male genital shape was found to be evolving 1.2 times faster than female genital shape. Female and male genital shapes exhibited strongly correlated evolution, indicating that genital shape changes in one sex are associated with corresponding changes in the genital shape of the other sex. This study adds novel insight into our growing understanding of how female genitalia can evolve rapidly and divergently and highlights the advantages of three-dimensional techniques and multivariate analyses in studies of female genital evolution.</p>
The condition-dependence of male genital size and shape
<p>The male genitals of internal fertilizers evolve rapidly and divergently, and sexual selection is generally responsible for this. Many sexually selected traits are condition-dependent - with their expression dependent upon the resources available to be allocated to them - as revealed by genetic or environmental manipulations of the condition. However, it is not clear whether male genitals are also condition-dependent. Here we manipulate the condition in two ways (via inbreeding and diet) to test the condition-dependence of the genital arch of <em>Drosophila simulans</em>. We found that genital size but not genital shape suffered from inbreeding depression, whereas genital size and shape were affected by dietary manipulation of the condition. The differential effects of these treatments likely reflect the underlying genetic architecture that has been shaped by past selection: inbreeding depression is only expected when traits have a history of directional selection, while diet impacts traits regardless of historical selection. Nonetheless, our results suggest genitals can be condition-dependent like other sexually selected traits.</p>
The genitive alternation in German (dataset)
<p>An annotated dataset, documentation and an R script for reproducing the analysis reported in <a href="https://doi.org/10.1515/cllt-2024-0017">Kopf, Kristin & Felix Bildhauer. 2024. The genitive alternation in German. Corpus Linguistics and Linguistic Theory. Published online November 13, 2024.</a></p> <h2>Contents</h2> <p><code>genitive_alternation_cllt.tsv</code>: a dataset containing 14,684 instances of nouns with either a genitive modifier or a <em>von</em>-modifier (one per line, with several layers of annotation in individual columns). It was used for analyzing the genitive alternation in German, as reported in <a href="https://doi.org/10.1515/cllt-2024-0017">Kopf & Bildhauer (2024)</a>. Tab-separated values, utf-8.</p> <p><code>cllt.standalone.R</code>: an R script that reproduces the analysis from Kopf & Bildhauer (2024)</p> <p><code>documentation.markdown</code>: dataset documentation</p> <h2>License</h2> <p>The dataset includes data from two different sources, as indicated in the column "License", to which different licences apply:</p> <p>Data from the German Reference Corpus DeReKo are subject to the <a href="https://www2.ids-mannheim.de/cosmas2/projekt/register/license_agreement.html">End User Agreement for the Use of the German Reference Corpus DeReKo</a> (version of 2018-05-24). In particular, commercial use is excluded. Furthermore, this data may not be passed on to third parties or published without the written consent of the Leibniz Institute for the German Language. This does not apply to quotations and excerpts.</p> <p>Data from the DECOW16 web corpus are subject to the <a href="https://www.webcorpora.org/license.php">COW TERMS OF USE</a> (version 2.1, 2014-12-16). In particular, commercial use is excluded.</p> <p>The column "Licence" states the applicable licence for each data point.</p> <p>By downloading the dataset, the user agrees to use the data in accordance with the applicable license.</p>
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