Female Genital System

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Ahmad Wasim - One of the best experts on this subject based on the ideXlab platform.

Ahad Sumaya - One of the best experts on this subject based on the ideXlab platform.

Reyes Penasantiago - One of the best experts on this subject based on the ideXlab platform.

  • description of tylencholaimus discus sp n nematoda dorylaimida tylencholaimidae from iran
    Zootaxa, 2019
    Co-Authors: Behrouz Golhasan, Ramin Heydari, Reyes Penasantiago
    Abstract:

    A new species of the genus Tylencholaimus , collected in natural areas of Iran, is described and illustrated, including SEM observations. Tylencholaimus discus sp. n. is characterized by its 0.65–0.76 mm long body, lip region offset by weak constriction and 7–7.5 µm broad with a conspicuous perioral disc, odontostyle 6–7 µm long, odontophore 9–10.5 µm long and visibly flanged rather than knobbed, neck 230–259 µm long with anterior region weakly muscular and basal expansion 98–125 µm long or occupying 42–49% of total neck length, Female Genital System mono-prodelphic, posterior branch reduced to a uterine sac 2–20 µm long or much shorter (0.1–0.6 times) than body diameter but very occasionally consisting of uterus, sphincter and a small terminal mass all together measuring 35–40 µm long, V = 65–74, tail short and rounded (13–17 µm, c = 41–57, c’ = 0.6–0.8), and male unknown.

  • redescription of three italian species of labronema thorne 1939 dorylaimida dorylaimidae
    Nematology, 2019
    Co-Authors: Reyes Penasantiago, Maria Teresa Vinciguerra
    Abstract:

    This contribution presents a redescription of three Labronema species originally described from Italy: L. angeloi, L. carusoi and L. pulchrum. Their type material is re-examined, described and illustrated with line drawings and micrographs. New information about these species is provided, including morphometrics and relevant morphological features. Morphologically, the three species form a homogeneous group, but can be separated by significant differences in the structure of Female Genital System, cuticle thickness on the tail, and shape and size of the spicules. Labronema pulchrum is regarded as a junior synonym of L. duhouxi.

  • taxonomy of the genus labronema thorne 1939 nematoda dorylaimida dorylaimidae with redescription of its type species l ferox thorne 1939
    Nematology, 2019
    Co-Authors: Reyes Penasantiago
    Abstract:

    Labronema ferox is redescribed on the basis of two Females and four males from the USA. It is characterised by its 2.90-4.45 mm long body, lip region offset by deep constriction, 31-39  μ m broad and slightly sucker-like with distinctly protruding perioral liplets, odontostyle 34-37  μ m long with aperture occupying 37-42% its length, neck 673-883  μ m long, pharyngeal expansion occupying 48-52% of total neck length, Female Genital System didelphic-amphidelphic, uterus long and complex, including an intermediate pars musculosa , vulva longitudinal (V = 51-54), caudal region short and rounded (27-39  μ m, c = 93-135, c′=0.6-0.8), spicules 76-89  μ m long, and 20-25 nearly contiguous ventromedian supplements with an hiatus. Previous information about the species is analysed and discussed in the light of the present redescription. A new name, Labronemella zullinii sp. n., is proposed for the two Females from Nepal described by Zullini in 1973. This new characterisation of L. ferox lays the foundations to study the taxonomy of the genus in more detail.

  • nematodes of the order dorylaimida from romania two interesting species of the subfamily qudsianematinae jairajpuri 1965
    Russian Journal of Nematology, 2010
    Co-Authors: Marcel Ciobanu, Iuliana Popovici, Reyes Penasantiago
    Abstract:

    Two known species of the nematode family Qudsianematidae were studied on the basis of material collected from natural habitats in Romania. Two populations of Labronema carusoi are compared to the original description, with new observations that allow a better characterisation of this taxon, especially those referring the morphology of lip region and Female Genital System. The Female of Labronemella labiata is reported and described for the first time. Descriptions, measurements, illustrations, including LM pictures for both species and SEM pictures for L. carusoi, are provided. Data concerning the occurrence of the species in Romania are also given.

  • nematodes of the order dorylaimida from romania the genus enchodelus thorne 1939 1 species with conical tail
    Nematology, 2010
    Co-Authors: Marcel Ciobanu, Pablo Guerrero, Iuliana Popovici, Reyes Penasantiago
    Abstract:

    Six species of the genus Enchodelus, one new and five known, from natural areas in Romania were studied. Enchodelus transsilvanicus sp. n. is distinguished by its 1.28-1.51 mm long body, lip region moderately angular and 12.5-13.5 μm in diam., odontostyle 29-34 μm long or 2.1-2.6 times the lip region diam., odontophore lacking distinct flanges and 41-45 μm long or 1.2-1.6 times the odontostyle, neck length 272-298 μm, pharyngeal expansion 82-113 μm long and occupying 31-39% of total neck length, Female Genital System amphidelphic, uterus bipartite and 3.1-3.5 times body diam. at its level, pars refringens vaginae with two distinct sclerotisations, vulva a transverse slit (V = 45-48), Female tail conical and regularly ventrad curved (42-47 μm, c = 28-36, c′ = 1.3-1.5), spicules 47-50 μm long, and 6-8 spaced, ventromedian supplements. Measurements, illustrations and additional data of the remaining five species are given, namely E. arcuatus, E. brevidentatus, E. geraldi, E. morgensis and E. veletensis. An emended diagnosis of E. arcuatus is provided. Three species, E. brevidentatus, E. morgensis and E. veletensis, are reported from Romania for the first time.

Ahmad W. - One of the best experts on this subject based on the ideXlab platform.

  • Description of a new species of the genus Caveonchus Siddiqi, 1982 (Nematoda: Dorylaimida) with diagnostic compendium and key to its species
    Sciendo, 2017
    Co-Authors: Ahad S., Ahmad W.
    Abstract:

    Caveonchus siddiqii n. sp. is described and illustrated based on specimens collected from both India and Japan. It is characterized by having a medium sized body (L= 0.86 - 1.12 mm); labial disc present; amphideal fovea flask-shaped; lip region cap-like, offset by slight constriction; odontostyle 8 - 9 μm, odontophore 10 - 12 μm; pharynx with slender anterior part which expands abruptly into the saccate basal bulb, occupying about 16 - 21 % of total neck length; Female Genital System mono-opisthodelphic; anterior Genital branch 70 - 100 μm or 1.9 - 2.8 times the midbody diameter long; tail short, rounded, hemispheroid, 0.5 - 0.7 anal body diameter long; spicules 30 - 38 μm long; and three spaced ventromedian supplements. Its relationship with all the known species of the genus is discussed. A diagnostic compendium and a key to identification of the species is also provided

  • New observations on Thornedia opisthodelphis (Jairajpuri, 1968) Siddiqi, 1982 (Dorylaimida, Leptonchidae) from Vietnam, with discussion on the identity of the genus
    Servicio de Publicaciones. Universidad de Jaén, 2012
    Co-Authors: Nguyen D., Ahmad W., Vu T. T., PeÑa-santiago R.
    Abstract:

    Thornedia opisthodelphisfrom a natural forest in northern Vietnam is described and illustrated. It is characterized by its body 0.50-0.57 mm long, lip region almost continuous and 5 μm broad, odontostyle attenuate and 21 μm long or 4.2 times the lip region width, odontophore linear, neck 148-155 μm long, pharyngeal expansion 38-45 μm long or 25-29% of total neck length, Female Genital System mono-opisthodelphic, prevulval sac totally absent, pars refringens vaginae also absent, V = 45-51, tail cylindrical (18-24 μm, c = 23.5-31.7, c = 1.5-2.2), and male unknown. The identity of Thornedia is discussed in depth, including a historical outline, morphological characterization and its taxonomy. Because of the tylencholaimid cuticle and short pharyngeal expansion, it is transferred from Nordiidae to Leptonchidae. An emended diagnosis as well as a compendium of their species are also provided

  • Descriptions of new and known species of the superfamily Tylencholaimoidea (Nematoda: Dorylaimida) from Jammu & Kashmir, India
    Servicio de Publicaciones. Universidad de Jaén, 2010
    Co-Authors: Mushtaq P., Naz T., Ahmad W.
    Abstract:

    Three new and three known species belonging to the superfamily Tylencholaimoidea are described and illustrated from Jammu & Kashmir State of India. Tylencholaimus pini sp. n. is characterized by having body 0.5-0.6 mm long, offset lip region, odontostyle 7-8 μm long, odontophore with slightly thickened base, expanded part of pharynx with gradual expansion, Female Genital System mono-prodelphic, vulva transverse, vagina with sclerotized walls, and short conoid tail with wrinkled terminus. Promumtazium indicum sp. n. is characterized by its body 0.91-1.14 mm long, lip region offset by constriction and 9.0-9.5 μm wide, stirrup-shaped amphids, odontostyle asymmetrical and 6 μm long, Female Genital System amphidelphic, spicules 37 μm long, two well spaced ventromedian supplements, and short conoid tail with bluntly rounded terminus. Proleptonchus sclerouterinus sp. n. is distinguished by having body 1.21-1.33 mm long, lip region low and offset by constriction, amphids cup-shaped and occupying almost entire corresponding body width, odontostyle 7.0 μm long, Female Genital System pseudo-monodelphic, pars dilatata uteri with distinctly sclerotized central lumen containing refringent apophyses, posterior Genital branch with well developed uterus and sphincter followed by sac-like rudimentary oviduct, and hemispheroid tail with thick cuticle at terminus. Tylencholaimellus striatus Thorne, 1939, T. sayeedi Siddiqi, 1965 and T. eskei Siddiqi & Khan, 1964 are redescribed; male is reported for the fi rst time for T. eskei.En esta contibución se describen e ilustran tres nuevas especies y otras tres ya conocidas pertenecientes a la superfamilia Tylencholaimoidea procedentes del estado de Jammu y Kashmir, India. Tylencholaimus pini sp. n. se caracteriza por tener una longitud corporal de 0.5-0.6 mm, region labial diferenciada, odontostilo de 7-8 μm de longitud, odontoforo con la base algo ensanchada, expansión faríngea gradual, sistema Genital femenino mono-prodélfi co, vulva transversa, vagina con paredes esclerotizadas, y cola corta y conoidea con extremo arrugado. Promumtazium indicum sp. n. se distingue por su tamaño corporal de 0.91-1.14 mm de longitud, region labial diferenciada por constricción y de 9.0- 9.5 μm de anchura, anfi dios en forma de estribo, odontostilo asimétrico y de 6 μm de longitud, sistema Genital femenino anfi délfi co, espículas de 37 μm de longitud, dos suplementos ventromedianos bien espaciados, y cola corta y conoidea con extremo redondeado. Proleptonchus sclerouterinus sp. n. se diferencia por tener una longitud corporal de 1.21-1.33 mm, region labial baja y diferenciada por constricción, anfi dios en forma de copa y que ocupan casi la anchura corporal correspondiente, odontostilo de 7.0 μm de longitud, sistema Genital femenino pseudo-monodélfi co, pars dilatata uteri con lumen central claramente esclerotizado y con apófi sis refringentes, rama Genital posterior posterior con útero bien desarrollado y esfínter seguido de un oviducto rudimentario sacciforme, y cola hemisferoidea con la cutícula engrosada en el extremo. Tylencholaimellus striatus Thorne, 1939, T. sayeedi Siddiqi, 1965 y T. eskei Siddiqi & Khan, 1964 se redescriben; el macho de T. eskei se encuentra por vez primera

  • Scalpelus loofi gen. n., sp. n. (Nematoda : Dorylaimida) from Costa Rica
    Servicio de Publicaciones. Universidad de Jaén, 2009
    Co-Authors: Ahmad W.
    Abstract:

    Scalpelus loofi gen. n., sp. n. is described and illustrated from natural forest in Costa Rica. The new genus is characterized by having continuous lip region with amalgamated lips, outer and inner labial papillae close to each other, wine-glass-shaped amphid, wide asymmetrical scalpel-like odontostyle, rod-like odontophore, S2N well developed and far from base, amphidelphic Female Genital System, and short hemispheroid tail.Se describe e ilustra Scalpelus loofi gen. n., sp. n., recolectado en un bosque natural de Costa Rica. El nuevo género se distingue por tener la región labial con los labios fusionados, papilas labiales externas e internas muy próximas entre sí, anfidio con forma de copa de vino, odontostilo asimétrico y con aspecto de escalpelo, odontoforo en forma de varillas, S2N bien desarrollado y situado lejos de la base de la faringe, sistema Genital femenino didélfico, y cola corta y hemisferoidea

Wasim Ahmad - One of the best experts on this subject based on the ideXlab platform.

  • Figure 6 in Taxonomy of the genus Tantunema Siddiqi, 1982 (Dorylaimida: Tylencholaimidae) with description of one new and two known species
    2016
    Co-Authors: Sumaya Ahad, Wasim Ahmad
    Abstract:

    Figure 6. Tantunema indicum sp. nov. A. B. & C. Anterior region; D & E. Anterior end showing amphid; F. Pharyngeal bulb; G. Pharyngo-intestinal junction; H. Female Genital System; I. Vulval region; J. Female posterior region. A, B, C, D, E, G, I = 10 μm; F, H, J = 20 μm

  • a new and three known species of the genus tylencholaimellus cobb in m v cobb 1915 nematoda dorylaimida from changbai mountain china
    Zootaxa, 2012
    Co-Authors: Min Zhang, Sumaya Ahad, M Baniyamuddin, Wenju Liang, Wasim Ahmad
    Abstract:

    A new and three known species of the genus Tylencholaimellus Cobb in M.V. Cobb, 1915 are described from ChangbaiMountain, Northeast China. Tylencholaimellus sinensis n. sp. species is characterized by having a medium sized body (L=1.1–1.3 mm); outer cuticle with fine transverse striations; inner layer distinctly striated; radial refractive elementsabundant; labial disc absent; lip region offset by constriction; lips rounded and amalgamated; odontostyle 18–19 µm,odontophore 7–8 µm, combined length 25–27μm; anterior uterine sac 0.8–1.6 mid body diameters long; mono-opisthodelphic Female Genital System with small anterior uterine sac; transverse vulva and short conoid tail. Tylencholaimellus striatus Thorne, 1939, T. montanus Thorne, 1939 and T. cinctus Orr & Dickerson, 1965 are described for the first time from this region of the world.

  • new and known species of dorylaimoidea nematoda dorylaimida from singapore
    Nematology, 2007
    Co-Authors: Wasim Ahmad
    Abstract:

    A new genus and three new and nine known species of Dorylaimoidea are recorded for the first time from Singapore. Rafflesius singaporensis gen. n., sp. n. is characterised by having a continuous lip region with amalgamated lips; labial papillae not protruding above labial contour; slender, dorylaimoid odontostyle with aperture one third its length; abrupt pharyngeal expansion; DO and DN far posterior to beginning of expansion; both pair of subventrals in the posterior third of expanded part; monoopisthodelphic Female Genital System, and long filiform tail. Oriverutus nusi sp. n. is characterised by having 0.81-0.89 mm long, slender body; offset lip region with distinct lips and labial papillae; 19-20 μm long, attenuated odontostyle; amphidelphic Female Genital System and elongate conoid tail with slightly dorsally bent tip. Saevadorella microstyla sp. n. is characterised by having 0.33-0.37 mm long body; offset lip region; 10.5-11.5 μm long, attenuated odontostyle; rod-like odontophore; amphidelphic Female Genital System and short, conoid, ventrally arcuate tail. Saevadorella parva sp. n. is characterised by having 0.37-0.54 mm long body; distinctly offset lip region; 21.5-22.5 μm long attenuated odontostyle; amphidelphic Genital System and short conoid, ventrally arcuate tail. Mesodorylaimus flagellatus, M. pusillus, Amphidorylaimus infecundus, Discolaimium clavatum, Labronema nepalense, Oriverutus sundarus, O. microdorus, O. parvus and O. asaccatus are recorded for the first time from Singapore.

  • descriptions of new and known species of the superfamily tylencholaimoidea nematoda dorylaimida from jammu kashmir india
    Journal of nematode morphology and systematics, 2007
    Co-Authors: P Mushtaq, T Naz, Wasim Ahmad
    Abstract:

    Three new and three known species belonging to the superfamily Tylencholaimoidea are described and illustrated from Jammu & Kashmir State of India. Tylencholaimus pini sp. n. is characterized by having body 0.5-0.6 mm long, offset lip region, odontostyle 7-8 μm long, odontophore with slightly thickened base, expanded part of pharynx with gradual expansion, Female Genital System mono-prodelphic, vulva transverse, vagina with sclerotized walls, and short conoid tail with wrinkled terminus. Promumtazium indicum sp. n. is characterized by its body 0.91-1.14 mm long, lip region offset by constriction and 9.0-9.5 μm wide, stirrup-shaped amphids, odontostyle asymmetrical and 6 μm long, Female Genital System amphidelphic, spicules 37 μm long, two well spaced ventromedian supplements, and short conoid tail with bluntly rounded terminus. Proleptonchus sclerouterinus sp. n. is distinguished by having body 1.21-1.33 mm long, lip region low and offset by constriction, amphids cup-shaped and occupying almost entire corresponding body width, odontostyle 7.0 μm long, Female Genital System pseudo-monodelphic, pars dilatata uteri with distinctly sclerotized central lumen containing refringent apophyses, posterior Genital branch with well developed uterus and sphincter followed by sac-like rudimentary oviduct, and hemispheroid tail with thick cuticle at terminus. Tylencholaimellus striatus Thorne, 1939, T. sayeedi Siddiqi, 1965 and T. eskei Siddiqi & Khan, 1964 are redescribed; male is reported for the fi rst time for T. eskei.

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