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Han Hongxiang - One of the best experts on this subject based on the ideXlab platform.
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Figures 117-120 from: Han H, Jiang N, Xue D (2011) A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species. ZooKeys 139: 45-96. https://doi.org/10.3897/zookeys.139.1308
2011Co-Authors: Jiang Nan, Xue Dayong, Han HongxiangAbstract:Figures 117-120 - Female Genitalia of Biston and enlarged view of signum. 117 Biston marginata 118 Biston thoracicaria 119 Biston betularia parva 120 Biston betularia nepalensis. Scale bar for Female Genitalia = 1 mm. (s = signum
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Figures 121-124 from: Han H, Jiang N, Xue D (2011) A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species. ZooKeys 139: 45-96. https://doi.org/10.3897/zookeys.139.1308
2011Co-Authors: Jiang Nan, Xue Dayong, Han HongxiangAbstract:Figures 121-124 - Female Genitalia of Biston and enlarged view of signum. 121 Biston mediolata sp. n. 122 Biston bengaliaria 123 Biston suppressaria 124 Biston regalis. Scale bar for Female Genitalia = 1 mm. (s = signum
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Figures 125-128 from: Han H, Jiang N, Xue D (2011) A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species. ZooKeys 139: 45-96. https://doi.org/10.3897/zookeys.139.1308
2011Co-Authors: Jiang Nan, Xue Dayong, Han HongxiangAbstract:Figures 125-128 - Female Genitalia of Biston and enlarged view of signum. 125 Biston falcata falcata (Diqing, Yunnan) 126 Biston falcata falcata (Gyirong, Tibet) 127 Biston falcata satura (Zhouqu, Gansu) 128 Biston thibetaria. Scale bar for Female Genitalia = 1 mm. (s = signum
Leigh W. Simmons - One of the best experts on this subject based on the ideXlab platform.
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The coevolution of male and Female Genitalia in a mammal: A quantitative genetic insight
Evolution; international journal of organic evolution, 2020Co-Authors: Gonçalo I. André, Renée C. Firman, Leigh W. SimmonsAbstract:Male Genitalia are among the most phenotypically diverse morphological traits, and sexual selection is widely accepted as being responsible for their evolutionary divergence. Studies of house mice suggest that the shape of the baculum (penis bone) affects male reproductive fitness and experimentally imposed postmating sexual selection has been shown to drive divergence in baculum shape across generations. Much less is known of the morphology of Female Genitalia and its coevolution with male Genitalia. In light of this, we used a paternal half-sibling design to explore patterns of additive genetic variation and covariation underlying baculum shape and Female vaginal tract size in house mice (Mus musculus domesticus). We applied a landmark-based morphometrics approach to measure baculum size and shape in males and the length of the vaginal tract and width of the cervix in Females. Our results reveal significant additive genetic variation in house mouse baculum morphology and cervix width, as well as evidence for genetic covariation between male and Female genital measures. Our data thereby provide novel insight into the potential for the coevolutionary divergence of male and Female genital traits in a mammal.
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The evolution of Female Genitalia
Journal of evolutionary biology, 2019Co-Authors: N. Sloan, Leigh W. SimmonsAbstract:Female Genitalia have been largely neglected in studies of genital evolution, perhaps due to the long‐standing belief that they are relatively invariable and therefore taxonomically and evolutionarily uninformative in comparison with male Genitalia. Contemporary studies of genital evolution have begun to dispute this view, and to demonstrate that Female Genitalia can be highly diverse and covary with the Genitalia of males. Here, we examine evidence for three mechanisms of genital evolution in Females: species isolating ‘lock‐and‐key’ evolution, cryptic Female choice and sexual conflict. Lock‐and‐key genital evolution has been thought to be relatively unimportant; however, we present cases that show how species isolation may well play a role in the evolution of Female Genitalia. Much support for Female genital evolution via sexual conflict comes from studies of both invertebrate and vertebrate species; however, the effects of sexual conflict can be difficult to distinguish from models of cryptic Female choice that focus on putative benefits of choice for Females. We offer potential solutions to alleviate this issue. Finally, we offer directions for future studies in order to expand and refine our knowledge surrounding Female genital evolution.
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Female Genitalia can evolve more rapidly and divergently than male Genitalia.
Nature communications, 2019Co-Authors: Leigh W. Simmons, John L. FitzpatrickAbstract:Male Genitalia exhibit patterns of divergent evolution driven by sexual selection. In contrast, for many taxonomic groups, Female Genitalia are relatively uniform and their patterns of evolution remain largely unexplored. Here we quantify variation in the shape of Female Genitalia across onthophagine dung beetles, and use new comparative methods to contrast their rates of divergence with those of male Genitalia. As expected, male genital shape has diverged more rapidly than a naturally selected trait, the foretibia. Remarkably, Female genital shape has diverged nearly three times as fast as male genital shape. Our results dispel the notion that Female Genitalia do not show the same patterns of divergent evolution as male Genitalia, and suggest that Female Genitalia are under sexual selection through their role in Female choice.
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micro ct scanning provides insight into the functional morphology of millipede Genitalia
Journal of Zoology, 2012Co-Authors: Janine M Wojcieszek, P Austin, Mark S Harvey, Leigh W. SimmonsAbstract:Few studies investigating genital evolution examine the functional morphology of Genitalia. In this study, we snap-froze copulating pairs of the millipede Antichiropus variabilis and used micro-computed tomography (CT) scanning and traditional light microscopy to investigate the mechanical interactions of male and Female Genitalia during copulation. The male Genitalia of A. variabilis appear to function as lock-and-key structures, used in species mate recognition and species isolation. The Female Genitalia were complex in structure, and different sections of the male gonopods penetrated specific sections of the Female Genitalia. Morphological investigations confirmed a high degree of mechanical correspondence between male and Female Genitalia, as might be expected for a lock-and-key character. We discuss why genital shape is important in fertilization success for A. variabilis and present a novel application of micro-CT scanning that is widely applicable to other studies of genital evolution.
Antonio D Brescovit - One of the best experts on this subject based on the ideXlab platform.
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FIGURE 53. Glenognatha gaujoni. A, Female gonopore. B–E, Female Genitalia. B in Revision and phylogenetic analysis of the orb-weaving spider genus Glenognatha Simon, 1887 (Araneae, Tetragnathidae)
2016Co-Authors: Jimmy Cabra-garcía, Antonio D BrescovitAbstract:FIGURE 53. Glenognatha gaujoni. A, Female gonopore. B–E, Female Genitalia. B, dorsal (arrow, uterus externus distal portion). C, ventral. D, lateral arrow, uterus externus distal portion. E, membranous chamber (arrow, tendons). F–I, Female spinnerets.F, ventral.G, ALS.H, PMS. I, PLS. J–L, Female tracheal system. J, dorsal.K, medianand lateral trunks.L, tracheal spiracle lateral view. Scale bars, 100 µm (A–D, F, J–L), 20 µm (E, G–I). AC: aciniform gland spigots. AG: aggregate gland spigots.CY:cylindrical gland spigot.FL:flagelliform gland spigot.LT:lateral trunk.mAP:minor ampullate gland spigot.MC: membranous chamber.MT:median trunk.PI: piriform gland spigots.TAG:tracheal atrium gland. UE: uterus externus
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FIGURE 103. Glenognatha australis. A–C, Female Genitalia. A in Revision and phylogenetic analysis of the orb-weaving spider genus Glenognatha Simon, 1887 (Araneae, Tetragnathidae)
2016Co-Authors: Jimmy Cabra-garcía, Antonio D BrescovitAbstract:FIGURE 103. Glenognatha australis. A–C, Female Genitalia. A, dorsal (arrow, uterus externus portions). B, ventral.C, lateral. D–E, spermathecae and copulatory duct. F–H, Female tracheal system. F, dorsal. G, median and lateral trunks. H, tracheal spiracle, posterior view. I, ALS. J, PMS. K. PLS. Scale bars, 100 µm (A–C, F–G), 10 µm (D–E, H–K). AC: aciniform gland spigots. AG: aggregate gland spigots. CD: copulatory duct. CY: cylindrical gland spigot. FL: flagelliform gland spigot. LSD: long-stem ducts.LT:lateral trunk.MAP: major ampullate gland spigot.mAP:minor ampullate gland spigot.MC: membranous chamber.MT:median trunk.PI: piriform gland spigots. S: spermathecae.TAG: tracheal atrium gland.UE: uterus externus
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FIGURE 63. Glenognatha globosa. A–D, Female Genitalia. A, dorsal. B, ventral. C, lateral. D, uterus externus distal portion. E–G, Female spinnerets. E, ALS. F, PMS. G, PLS. H–I, Female tracheal system. H, dorsal. I in Revision and phylogenetic analysis of the orb-weaving spider genus Glenognatha Simon, 1887 (Araneae, Tetragnathidae)
2016Co-Authors: Jimmy Cabra-garcía, Antonio D BrescovitAbstract:FIGURE 63. Glenognatha globosa. A–D, Female Genitalia. A, dorsal. B, ventral. C, lateral. D, uterus externus distal portion. E–G, Female spinnerets. E, ALS. F, PMS. G, PLS. H–I, Female tracheal system. H, dorsal. I, median and lateral trunks. Scale bars, 100 µm (A–C, H–I), 10 µm (D–G). AC: aciniform gland spigots. AG: aggregate gland spigots. FL: flagelliform gland spigot.LT:lateral trunk. MAP:major ampullate gland spigot.mAP: minor ampullate gland spigot. MC: membranouschamber. MT: median trunk. PI: piriform gland spigots.UE:uterus externus
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exaggerated Female Genitalia in two new spider species araneae pholcidae with comments on genital evolution by Female choice versus antagonistic coevolution
Insect Systematics & Evolution, 2005Co-Authors: Bernhard A Huber, Antonio D Brescovit, Cristina A RheimsAbstract:Two new species are described that are remarkable in having exaggerated Female Genitalia: Mesabolivar samatiaguassu sp. n. and M. cuarassu sp. n.. Comparative evidence as well as size measurements of male and Female structures suggest that the exaggerated Female external Genitalia correlate functionally with elongated male cheliceral apophyses. These morphological findings are discussed in the light of competing models of genital evolution. Luring mating acts, Female cooperative behaviour and morphology, as well as the probable costs associated with the Female structures argue against the antagonistic coevolution model and favour sexual selection by cryptic Female choice.
Cleber Galvão - One of the best experts on this subject based on the ideXlab platform.
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study of the external Female Genitalia of 14 rhodnius species hemiptera reduviidae triatominae using scanning electron microscopy
Parasites & Vectors, 2014Co-Authors: Vagner Jose Mendonca, Juliana Damieli Nascimento, Sueli Gardim, M Cilense, Jader De Oliveira, Danila Blanco De Carvalho, Heloisa Pinotti, Mara Cristina Pinto, Cleber GalvãoAbstract:Background: Among the vectors of Chagas disease (Hemiptera: Reduviidae:Triatominae), there are eighteen Rhodnius species described and some are difficult to identify. The aim of this article is to contribute to the specific identification of fourteen Rhodnius spp. through morphological characters of the external Female Genitalia. Methods: Female abdomens were cut transversely. The specimens were then prepared for examination by using scanning electron microscopy. Results: The careful examination of the dorsal, posterior and ventral sides revealed characteristics that allowed the identification of each of the fourteen species. Conclusion: The use of external Female Genitalia as characteristics are proposed as a tool for specifically identifying Rhodnius species, and an identification key for these species is presented.
Jiang Nan - One of the best experts on this subject based on the ideXlab platform.
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Figures 117-120 from: Han H, Jiang N, Xue D (2011) A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species. ZooKeys 139: 45-96. https://doi.org/10.3897/zookeys.139.1308
2011Co-Authors: Jiang Nan, Xue Dayong, Han HongxiangAbstract:Figures 117-120 - Female Genitalia of Biston and enlarged view of signum. 117 Biston marginata 118 Biston thoracicaria 119 Biston betularia parva 120 Biston betularia nepalensis. Scale bar for Female Genitalia = 1 mm. (s = signum
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Figures 121-124 from: Han H, Jiang N, Xue D (2011) A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species. ZooKeys 139: 45-96. https://doi.org/10.3897/zookeys.139.1308
2011Co-Authors: Jiang Nan, Xue Dayong, Han HongxiangAbstract:Figures 121-124 - Female Genitalia of Biston and enlarged view of signum. 121 Biston mediolata sp. n. 122 Biston bengaliaria 123 Biston suppressaria 124 Biston regalis. Scale bar for Female Genitalia = 1 mm. (s = signum
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Figures 125-128 from: Han H, Jiang N, Xue D (2011) A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species. ZooKeys 139: 45-96. https://doi.org/10.3897/zookeys.139.1308
2011Co-Authors: Jiang Nan, Xue Dayong, Han HongxiangAbstract:Figures 125-128 - Female Genitalia of Biston and enlarged view of signum. 125 Biston falcata falcata (Diqing, Yunnan) 126 Biston falcata falcata (Gyirong, Tibet) 127 Biston falcata satura (Zhouqu, Gansu) 128 Biston thibetaria. Scale bar for Female Genitalia = 1 mm. (s = signum
