Journal articles: 'Penes'

1

Dytham, C., J. Grahame, and P. J. Mill. "Synchronous Penis Shedding in the Rough Periwinkle, Littorina Arcana." Journal of the Marine Biological Association of the United Kingdom 76, no. 2 (May 1996): 539–42. http://dx.doi.org/10.1017/s0025315400030733.

Full text

Abstract:

Penis size and morphology of an oviparous species of rough winkle Littorina arcana Hannaford Ellis (Gastropoda: Prosobranchia) was studied at Robin Hoods Bay on the English east coast. Monthly collections were made over a two year period from August 1987 to August 1989 and again from May to December 1993. Number of penial glands was recorded and a six point scale was used to quantify penis maturity. Results indicate that male L. arcana shed their penes in summer and regenerate a new one during the following 12–20 weeks. Male L. arcana in captivity shed penes in July but not in November. The significance of penis shedding and the differences in reproductive seasonality between L. arcana and its ovoviviparous sibling species L. saxatilis is discussed.

APA, Harvard, Vancouver, ISO, and other styles

2

Burnett, Arthur L., Biljana Musicki, Hunter C. Champion, and Trinity J. Bivalacqua. "Chronic Phosphodiesterase Type 5 Inhibitor Therapy Reduces Priapic Activity in Transgenic Sickle Cell Mice: Restoring Nitric Oxide/Redox Balance in the Penis." Blood 114, no. 22 (November 20, 2009): 576. http://dx.doi.org/10.1182/blood.v114.22.576.576.

Full text

Abstract:

Abstract Abstract 576 Introduction: Sickle cell disease (SCD)-associated priapism is characterized by aberrant nitric oxide (NO) regulatory pathway signaling and reduced endothelial NO bioavailability resulting in phosphodiesterase type 5 (PDE5) dysregulation in the penis. Our objective was to determine the effect of chronic PDE5 inhibitor therapy on in vivo erectile responses as well as on NO signaling and redox actions in the penis in an animal model of SCD in order to identify mechanisms associated with this therapeutic effect. Our animal model comprised transgenic sickle cell (SS) mice, expressing human sickle hemoglobin. Methods: Five groups of mice were used: 1) wild type (WT), 2) sickle cell heterozygotes (Hemi), 3) sickle cell homozygotes (Sickle), 4) WT + sildenafil (100 mg/kg per day), and 5) Sickle + sildenafil (100 mg/kg per day). All experimental groups underwent cavernous nerve electrical stimulation (CNS; 0.5 - 6 V) to assess erectile function (intracavernous pressure; ICP), and their responses were compared to WT. The frequency of erectile responses (erections/hr) pre- and post-stimulation was also determined. Analyses of penes were: total endothelial NOS (eNOS) and its phosphorylated/activated form (p-eNOS, Ser-1177), and PDE5 expressions; eNOS uncoupling (ratio of active eNOS dimer vs. inactive monomer); reactive oxygen species (ROS) generation; cGMP, NOS and PDE5 activities; and electron microscopy. Results: Erectile responses to CNS were significantly enhanced (P<0.05) in the Sickle when compared to Hemi and WT at all voltage settings. Sickle mice treated with sildenafil had a reduction (P<0.05) in spontaneous erections and reduced erectile responses to CNS, while sildenafil therapy had no effect on erectile responses in WT. EM showed endothelial cell interruption with loss of normal endothelial architecture and increased smooth muscle cell hyperplasia in Sickle mice penes. Sickle mice penes had reduced eNOS activity, p-eNOS expression, cGMP level, and PDE5 activity and increased eNOS uncoupling and ROS generation. Sildenafil therapy restored cGMP, NOS and PDE5 activities, improved p-eNOS expression, prevented eNOS uncoupling, and reduced ROS generation in Sickle mice penes compared to WT. Conclusions: The priapic activity in the Sickle mouse is associated with a reduction in the functions of NOS and PDE5 and an NO/redox imbalance in the penis, and chronic PDE5 inhibitor therapy reverses this phenotype by restoring normal NO-mediated penile vascular homeostasis. These data support the use of PDE5 inhibitors for the treatment of priapism associated with hematologic dyscrasias. Disclosures: Burnett: Pfizer Inc: Research Funding; Lilly LLC: Research Funding. Off Label Use: Sildenafil and tadalafil are FDA approved for treating erectile dysfunction.

APA, Harvard, Vancouver, ISO, and other styles

3

BRAASCH, DIETRICH, and LUKE M. JACOBUS. "Two new species of Afronurus Lestage, 1924, from Hong Kong, China (Ephemeroptera: Heptageniidae)." Zootaxa 3062, no. 1 (October 19, 2011): 64. http://dx.doi.org/10.11646/zootaxa3062.1.7.

Full text

Abstract:

Afronurus alces, sp. nov., and A. otus, sp. nov., are described based on male adult material from Hong Kong, China. Afronurus alces, sp. nov., has penes that are extraordinarily differentiated and laterally expanded. Afronurus otus, sp. nov., has a distinctive bifurcation at the tip of each penis lobe, with sharply pointed prongs that are subequal in size. Discussion is provided about the state of systematics for the tribe Afronurini Webb & McCafferty, 2007, with special reference to the genus Afronurus Lestage, 1924.

APA, Harvard, Vancouver, ISO, and other styles

4

Sekizawa, Ayami, Satoko Seki, Masakazu Tokuzato, Sakiko Shiga, and Yasuhiro Nakashima. "Disposable penis and its replenishment in a simultaneous hermaphrodite." Biology Letters 9, no. 2 (April 23, 2013): 20121150. http://dx.doi.org/10.1098/rsbl.2012.1150.

Full text

Abstract:

Although it is often thought that sexual selection is weaker in simultaneous hermaphrodites than in gonochorists, some simultaneous hermaphrodites exhibit bizarre mating behaviour. In the simultaneously hermaphroditic nudibranch Chromodoris reticulata , we found a peculiar mating behaviour, wherein the nudibranch autotomized its penis after each copulation and was able to copulate again within 24 h. To have sufficient length to be replenished for three copulations, the penis is compressed and spiralled internally. No other animal is known to repeatedly copulate using such ‘disposable penes’. Entangled sperm masses were observed on the outer surface of the autotomized penis, which is equipped with many backward-pointed spines. There is a possibility that the nudibranch removes sperm already stored in a mating partner's sperm storage organ(s).

APA, Harvard, Vancouver, ISO, and other styles

5

Perović, S. "Diphallus - erfolgreiche Vereinigung der Penes." Aktuelle Urologie 21, no. 01 (January 1990): 29–33. http://dx.doi.org/10.1055/s-2008-1060596.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Bivalacqua, Trinity J., Arthur L. Burnett, Wayne J. G. Hellstrom, and Hunter C. Champion. "Overexpression of arginase in the aged mouse penis impairs erectile function and decreases eNOS activity: influence of in vivo gene therapy of anti-arginase." American Journal of Physiology-Heart and Circulatory Physiology 292, no. 3 (March 2007): H1340—H1351. http://dx.doi.org/10.1152/ajpheart.00121.2005.

Full text

Abstract:

Since both increased nitric oxide (NO) synthase (NOS) abundance and diminished NO signaling have been reported in the aging penis, the role of NO in the adaptations of aging remains controversial. Here we tested the hypothesis that arginase, an enzyme that competes with NOS for the substrate l-arginine, contributes to erectile dysfunction with advanced age in the B6/129 mouse strain. Arginase protein abundance, mRNA expression, and enzyme activity were elevated in aged compared with young penile endothelial cells. In addition, endothelial NOS (NOS3) protein abundance was greater in aged versus young penile endothelial cells, whereas NOS activity and cGMP levels were reduced. Calcium-dependent l-arginine-to-l-citrulline conversion and cGMP formation increased significantly in aged mouse penes in the presence of the arginase inhibitor 2( S)-amino-6-boronohexanoic acid (ABH). However, there was no effect on l-arginine-to-l-citrulline conversion or cGMP accumulation in the endothelium from young mouse penes. To assess the functional role of arginase in the inhibition of NOS pathway responsiveness in the penis, we evaluated the effects of ABH and an adeno-associated virus encoding an antisense sequence to arginase I (AAVanti-arginase) on erectile function in vivo. ABH and AAVanti-arginase enhanced endothelium-dependent erectile responses in the aged mice without altering endothelium-independent responses. Paralleling our in vitro observations, ABH or AAVanti-arginase did not affect vascular responses in the young mice. Inhibition of the arginase pathway improves endothelial function in the aging penile circulation, suggesting that the arginase pathway may be exploited to improve erectile dysfunction associated with aging.

APA, Harvard, Vancouver, ISO, and other styles

7

MOLINERI, CARLOS, PAULO VILELA CRUZ, and DANIEL EMMERICH. "A new species of Asthenopus (Ephemeroptera: Polymitarcyidae: Asthenopodinae) from Brazil and Colombia." Zootaxa 2750, no. 1 (January 27, 2011): 33. http://dx.doi.org/10.11646/zootaxa.2750.1.3.

Full text

Abstract:

A new species of Asthenopus, A. crenulatus sp. nov. is described from adults of both sexes from Brazil and Colombia. The new species is diagnosed by: male foreleg length 0.7–0.9 times the length of fore wing, marginal intercalary veins on the entire margin of fore and hind wings generally shorter than distance between longitudinal veins, forceps and penes long and slender, penes with many subapical spines. This new species is closely related with A. picteti (Hubbard). A key to the male adults of Asthenopus is included.

APA, Harvard, Vancouver, ISO, and other styles

8

GONÇALVES, INÊS C., ELIDIOMAR R. DA-SILVA, and JORGE L. NESSIMIAN. "Two new species of Tricorythodes Ulmer, 1920 (Insecta, Ephemeroptera) from Southeastern Brazil." Zootaxa 2721, no. 1 (January 22, 2019): 62. http://dx.doi.org/10.11646/zootaxa.2721.1.7.

Full text

Abstract:

Two news species of Tricorythodes are described from both, nymph and male imago: Tricorythodes chalaza sp. nov. and Tricorythodes diasae sp. nov. Imagoes of T. diasae sp. nov. can be characterized as follows: vein CuP of wings absent or incomplete; distal 3/4 of hind legs black; inner margins of styliger plate projected; penes rectangular with lateral margins sclerotized, forming two distal lobes inserted apico-dorsally with rounded margins whereas imagoes of T. chalaza sp. nov. present: vein CuP incomplete or absent; inner margins of styliger plate projected; basal swelling on segment II of forceps shaded with black; penes pyramidal with lateral margins sclerotized, divided apically.

APA, Harvard, Vancouver, ISO, and other styles

9

Adams, John A., and Thomas B. Herman. "A comparison of the male genitalia of three Calopteryx species (Odonata: Calopterygidae)." Canadian Journal of Zoology 69, no. 5 (May 1, 1991): 1164–70. http://dx.doi.org/10.1139/z91-165.

Full text

Abstract:

We compared the morphology of male genitalia in the damselflies Calopteryx maculata (P. de Beauvois), C. aequabilis Say, and C. amata Hagen in Nova Scotia. Differences were most pronounced between C. maculata and the other two species. The number of spines and the arrangement and density of spinulae on the ventrolateral surface of the penis shaft varied among species; the largest species, C. amata, had three times as many spines as did the smallest, C. maculata. Scanning electron micrographs of penes revealed structures in C. aequabilis and C. amata similar to those in C. maculata. Males of both C. amata and C. aequabilis can likely remove sperm from the reproductive storage organs of females, as previously shown in C. maculata and C. dimidiata.

APA, Harvard, Vancouver, ISO, and other styles

10

MOLINERI, CARLOS, and CRISTIAN E. GRANADOS-MARTINEZ. "Two new species of Campsurus Eaton (Ephemeroptera: Polymitarcyidae) from Colombia." Zootaxa 4543, no. 1 (January 4, 2019): 90. http://dx.doi.org/10.11646/zootaxa.4543.1.5.

Full text

Abstract:

Two new species of Campsurus from Colombia are herein described, based on adults of both sexes and eggs. Campsurus vichada sp. nov. from the albifilum group, is separated from the other species in this group by: abdominal terga shaded slightly darker posteriorly, with a pale median band and pale closed markings, and pedestals short and subquadrate, main lobes of penes very long and slender, among other characters. Its sister relation with C. homaulus and C. gracilipenis is hypothesized through a cladistic analysis. A key is presented for the six species in the albifilum group of Campsurus.Campsurus cristales sp. nov. from the segnis group, closely related to C. janae, is diagnosed by: posterior margin of male abdominal sternum IX tri–lobed, pedestal strongly elongated and penes with a strongly expanded dorsal area, among other features.

APA, Harvard, Vancouver, ISO, and other styles

11

Gibbs, P. E. "A Male genital defect in the dog-whelk, Nucella lapillus (Neogastropoda), favouring survival in a TBT-polluted area." Journal of the Marine Biological Association of the United Kingdom 73, no. 3 (August 1993): 667–78. http://dx.doi.org/10.1017/s0025315400033208.

Full text

Abstract:

Tributyltin (TBT) pollution has exterminated populations of the dog-whelk Nucella lapillus along most of the north Kent coast (Thames Estuary) but the species survives as a small enclave around the North Foreland. Males in this enclave exhibit an unusual defect involving the non-development or partial development of the genital system: about 10% lack penes, or have undersized penes, and their gonoducts (vas deferens and prostate) are incompletely developed; in some cases, spermatogenesis appears to be retarded. Laboratory-bred animals display the same characters. This deficiency (‘Dumpton Syndrome’) is manifest also in the atypical development of male sex organs on the females (‘imposex’) induced by exposure to tributyltin (TBT). The evidence points to Dumpton Syndrome being a genetic disorder which has lessened the sterilizing effect of imposex and thereby has permitted the survival of this isolated enclave in an area of high TBT pollution.

APA, Harvard, Vancouver, ISO, and other styles

12

Brinkhurst, R. O. "On the genus Eclipidrilus Eisen, 1881 (Lumbriculidae, Clitellata), including a description of Eclipidrilus ithys sp.nov." Canadian Journal of Zoology 76, no. 4 (April 1, 1998): 644–59. http://dx.doi.org/10.1139/z97-224.

Full text

Abstract:

The genus Eclipidrilus is recongnized from the unique apomorphy of elongate of elongate atria with spiral muscles. The spermathecae are in segment IX, the male pores, in X, and female pores in 10/11;tests are found in IX-X or X and ovaries in XI. The seven North American species, one of which has been recorded from wales, differ in regard to the presence or absence of a proboscis, the median unpaired or lateral paired gonopores, the form of the penes, and the number of spermathecae and (or) atria. The primary characteristics of Eclipidrilus ithys sp.nov. are that it lacks a proboscis, it ha a small penis, and while there may be one or two atria, the atrial pores are ventrolateral (not median), the ejaculatory duct forms an upright structure in X, and the spermathecal and male pores are not enclosed in massive glands.

APA, Harvard, Vancouver, ISO, and other styles

13

Bailey, S. K., and I. M. Davies. "The Effects of Tributyltin on Dogwhelks (Nucella Lapillus) From Scottish Coastal Waters." Journal of the Marine Biological Association of the United Kingdom 69, no. 2 (May 1989): 335–54. http://dx.doi.org/10.1017/s0025315400029453.

Full text

Abstract:

The common dogwhelk (Nucella lapillus) is a dioecious species. However, on exposure to low concentrations (<1 ng I-1, Gibbs et al., 1987) of tributyltin (TBT) females develop certain male sexual characteristics, notably a penis and vas deferens. This phenomenon, first reported by Blaber (1970) in dogwhelks from the Plymouth area, and later termed 'imposex' (Smith, 1981), is now recognised as the most sensitive and straightforward way to identify contamination of coastal areas by TBT. The degree of imposex may be readily quantified as the relative penis size index (RPSI), which expresses the relative bulk of the penes in females and males from a given sample. It is calculated as (mean cubed female penis length/the mean cubed male penis length) x 100% (Gibbs et al., 1987). Gibbs et al. (1987) have examined the development of imposex in greater detail, and have divided the process into six stages (known as the vas deferens sequence, or VDS) based upon the degree of development of the vas deferens and penis in the female animal. This classification enables an assessment to be made of the reproductive ability of an animal. Stages 1 to 4 show a progressive development of the penis and vas deferens. At a VDS of 5, vas deferens tissue proliferates over the opening of the reproductive tract, blocking it, and subsequently causing sterility due to the inability of the animal to release egg capsules. Aborted egg capsules then gradually accumulate in the capsule gland (stage 6). The vas deferens sequence index, VDSI, is the mean VDS in a given sample of females.

APA, Harvard, Vancouver, ISO, and other styles

14

CAMPOS, ROGÉRIO, and RODOLFO MARIANO. "New species of Thraulodes Ulmer, 1920 (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) from Northeastern Brazil." Zootaxa 4565, no. 2 (March 8, 2019): 213. http://dx.doi.org/10.11646/zootaxa.4565.2.5.

Full text

Abstract:

Two new species of the genus Thraulodes Ulmer are described from the Brazilian Atlantic rainforest and Caatinga biomes from the state of Bahia, northeastern Brazil. Thraulodes catoles sp. nov. is described based on the male imago and can be distinguished from all other congeners by possessing the forewings with three cross veins basal to bullae; a reddish band on the apex of the foreleg femora; styliger plate with digitiform dorsal extension and penes with an apicolateral “ear”, long spines, lapel on inner margin and lateral pouch present. Thraulodes calori sp. nov. is described based on male and female imagos and can be diagnosed by the three weak cross veins basal to bullae on forewings; the apex of styliger plate rounded without medial projection with lateral margins acuminated; and the penes short, wide and without lateral pouch. The key to Thraulodes from Brazil was updated to include the new species described for the genus.

APA, Harvard, Vancouver, ISO, and other styles

15

VELU, CHINAVENMENI S., and NATESAN MUNUSWAMY. "Updated diagnoses for the Indian species of Streptocephalus (Crustacea: Branchiopoda: Anostraca)." Zootaxa 1049, no. 1 (September 13, 2005): 33. http://dx.doi.org/10.11646/zootaxa.1049.1.3.

Full text

Abstract:

The taxonomic status of the Indian Streptocephalus (S. dichotomus, S. echinus, S. longimanus S. spinifer, and S. simplex) is reevaluated and updated with additional information on various features such as penes, cercopods, and cysts. Surface ornamentation of the cysts is species-specific and therefore useful in identification.

APA, Harvard, Vancouver, ISO, and other styles

16

Liu, Wenliang, Chenwei Song, and Zhipeng Zhao. "A new record and mitochondrial identification of Pentias thompsoni Collinge, 1916 (Isopoda, Valvifera, Idoteidae) from the Nanji Islands, China." Crustaceana 93, no. 2 (July 1, 2020): 171–79. http://dx.doi.org/10.1163/15685403-bja10006.

Full text

Abstract:

Abstract Pentias thompsoni Collinge, 1916 is recorded for the first time from China. The male specimen is described firstly, including the micromorphological characters of penes and appendix masculina. The partial sequences of the mitochondrial cytochrome c oxidase subunit I (COI) of the species are also provided for a molecular characterization.

APA, Harvard, Vancouver, ISO, and other styles

17

Glöer, Peter, and Vladimir Pešić. "TWO NEW FRESHWATER MOLLUSK SPECIES OF THE GENUS GRAECOANATOLICA RADOMAN, 1973 FROM TURKEY (GASTROPODA: HYDROBIIDAE)." Ecologica Montenegrina 4 (November 29, 2015): 46–51. http://dx.doi.org/10.37828/em.2015.4.8.

Full text

Abstract:

Two species of the hydrobiid genus Graecoanatolica Radoman, 1973 were described from Turkey as new to science. The new species are characterized by a larger dimension of the shell. A comparative table of shell dimensions and features of penes to the species known for Turkey are provided. The total number of species of genus Graecoanatolica tallies now 12 species.

APA, Harvard, Vancouver, ISO, and other styles

18

Leigh, Matthew. "TACITUS, ANNALS 1.1.1 AND ARISTOTLE." Classical Quarterly 63, no. 1 (April 24, 2013): 452–54. http://dx.doi.org/10.1017/s0009838812000729.

Full text

Abstract:

The first sentence of the Annals reads urbem Romam a principio reges habuere. Commentators observe the echo of Sallust, Catiline 6.1 urbem Romam, sicuti ego accepi, condidere atque habuere initio Troiani, and of Claudius, ILS 212 quondam reges hanc tenuere urbem. In a stimulating recent contribution David Levene also compares the first sentence of Justinus' Epitome of the Histories of Pompeius Trogus: principio rerum gentium nationumque imperium penes reges erat. A fourth potential model may now be taken into consideration: Ἀθηναῖοι τὸ μὲν ἐξ ἀρχῆς ἐχρῶντο βασιλɛίαι.

APA, Harvard, Vancouver, ISO, and other styles

19

PENG, YU, HONGZHU WANG, and YONGDE CUI. "Four species of Tubifex Lamarck (Annelida: Oligochaeta: Naididae) from Tibet, China." Zootaxa 4320, no. 2 (September 15, 2017): 366. http://dx.doi.org/10.11646/zootaxa.4320.2.10.

Full text

Abstract:

Four species of Tubificinae (Oligochaeta: Naididae), Tubifex laxus n. sp., Tubifex gracilentus n. sp., Tubifex conicus He, Wang & Cui, 2012, and Tubifex tubifex (Müller, 1774) are reported from Tibet, China. T. laxus n. sp. is distinguished from allied species by relatively wide atria. T. gracilentus n. sp. differs from congeners in extremely thin and long penial sheaths. T. conicus is redefined as a species that lacks spermathecae. T. tubifex as redescribed here has slightly hirsute hair chaetae, cuticle rings around the penes and spermathecae with empty ampullae.

APA, Harvard, Vancouver, ISO, and other styles

20

Fraser, F. C. "A COMPARATIVE STUDY OF THE PENES OF THE FAMILY GOMPHIDAE (ORDER ODONATA)." Transactions of the Royal Entomological Society of London 90, no. 20 (April 24, 2009): 541–50. http://dx.doi.org/10.1111/j.1365-2311.1940.tb01034.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

BOLDRINI, RAFAEL, HANNA ASHLEY TAVARES PONTES DANTAS, and LUCAS RAMOS COSTA LIMA. "New species and new record of Thraulodes Ulmer, 1920 (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) from Brazil." Zootaxa 4527, no. 2 (December 4, 2018): 277. http://dx.doi.org/10.11646/zootaxa.4527.2.8.

Full text

Abstract:

A new species of the mayfly genus Thraulodes is described based on specimens from the state of Roraima, Brazil. The male imago of Thraulodes rodrigoi sp. nov. is described and the new species can be easily recognized by: forewing with one weakly marked cross veins basal to bullae; femora of forelegs with an apical transversal band brown heavily marked and one submedian macula; styliger plate triangular with a medial rounded projection; and penes short and wide, without lateral pouch. Thraulodes sternimaculatus Lima, Mariano & Pinheiro, 2013 is also reported for the first time in Piauí State.

APA, Harvard, Vancouver, ISO, and other styles

22

DE-SOUZA, MARCIA REGINA, and CARLOS MOLINERI. "The adults and nymphs of Asthenopus angelae new species (Ephemeroptera: Polymitarcyidae) from Argentina, Bolivia, Brazil and Colombia." Zootaxa 3399, no. 1 (July 25, 2012): 45. http://dx.doi.org/10.11646/zootaxa.3399.1.4.

Full text

Abstract:

Asthenopus angelae sp. nov. is described based on male and female imagos and associated nymphs from Argentina,Bolivia, Brazil and Colombia. The new species described is similar to A. curtus (Hagen). The nymphal and adult femalestages are indistinguishable from those of that species. The male adults can be separated from its congeners by thefollowing characters: penes tubular, with well developed median basal protrusion, curved ventro-medially, with apexacutely projected, furrow separating penial lobe from median basal protrusion reduced or absent; forceps relativelyslender; forelegs of male 0.6–0.7 × the length of the forewing; fore tarsal claws slightly widening distally; fore wings with 5–11 marginal intercalary veins relatively short.

APA, Harvard, Vancouver, ISO, and other styles

23

LIMA, LUCAS R. C., FREDERICO F. SALLES, and ULISSES DOS S. PINHEIRO. "New species of Leptohyphidae (Ephemeroptera) from northeastern Brazil." Zootaxa 3050, no. 1 (October 6, 2011): 63. http://dx.doi.org/10.11646/zootaxa.3050.1.4.

Full text

Abstract:

Two new species of Leptohyphidae are described based on nymphs and adults: Traverhyphes (Traverhyphes) frevo sp. nov. and Tricorythopsis spongicola sp. nov. Traverhyphes (T.) frevo can be distinguished from other species, among other characteristics, by the presence of curved penile spines inserted laterally, and posterolateral projections of styliger plate very short and pointed distally in lateral view. Tricorythopsis spongicola can be distinguished from the others species, mainly by the presence of spine-like lateral projections present on apical part of penes in the male imago, and by the tarsal claws with four to five marginal denticles, and two rows of 2 + 3 submarginal denticles with apical setae in the nymphs.

APA, Harvard, Vancouver, ISO, and other styles

24

WEBB, J. M., and W. P. MCCAFFERTY. "Contributions to the larvae of North American Nixe (Ephemeroptera: Heptageniidae), with the description of N. dorothae sp. nov. from southern Indiana." Zootaxa 3065, no. 1 (October 21, 2011): 27. http://dx.doi.org/10.11646/zootaxa.3065.1.3.

Full text

Abstract:

Nixe dorothae n. sp. (Ephemeroptera: Heptageniidae) is described from southern Indiana, USA based on larvae, males, and females. Larvae are easily differentiated from those of the other known North American species by the presence of two rows of denticles on the tarsal claws. Males are differentiated from congeners by the presence of median spines on the apical sclerites of the penes and reddish-brown abdominal terga. The larva of N. rusticalis is described for the first time; it is differentiated from known North American Nixe by having more than 15 comb setae on the maxilla. A preliminary key for the larvae of the known North American Nixe is provided.

APA, Harvard, Vancouver, ISO, and other styles

25

Bradley, R. D., and D. J. Schmidly. "The Glans Penes and Bacula in Latin American Taxa of the Peromyscus boylii Group." Journal of Mammalogy 68, no. 3 (August 28, 1987): 595–616. http://dx.doi.org/10.2307/1381595.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Podlasek, Carol A., Douglas Wood, Yi Tang, Kevin E. McKenna, and Kevin T. McVary. "1047: Rock-II Protein Abundance is Increased in Diabetic and Cavernous Nerve Injured Penes." Journal of Urology 173, no. 4S (April 2005): 284. http://dx.doi.org/10.1016/s0022-5347(18)35203-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

SALLES, F. F., and M. M. LIMA. "New species and new records of Miroculis Edmunds (Ephemeroptera: Leptophlebiidae) from Southeastern Brazil." Zootaxa 2740, no. 1 (January 14, 2011): 53. http://dx.doi.org/10.11646/zootaxa.2740.1.5.

Full text

Abstract:

In the present work, based mainly on material from environmental protection areas in the State of Espírito Santo, we describe a new species of Miroculis (Miroculis). The male imago of M. (M.) caparaoensis, sp. nov. can be distinguished from other members of the subgenus by the following combination of characteristics: 1) dorsal portion of eyes on a short stalk, dorsal upper portion circular with 12–18 large-sized facets in longest row; 2) forewings with membrane translucid, longitudinal and crossveins brown; 3) abdominal color pattern; 4) posteromedian margin of styliger plate with small concavity; 5) penes length approximately 0.70 length of forceps segment 1. Miroculis (Ommaethus) mourei and M. (M.) fittkaui are reported for the first time from the region.

APA, Harvard, Vancouver, ISO, and other styles

28

Astin, Alan E. "Regimen Morum." Journal of Roman Studies 78 (November 1988): 14–34. http://dx.doi.org/10.2307/301448.

Full text

Abstract:

In his account of the year 443 B.C., Livy, reporting the first appointment of censors, introduced the censorship as an institution whichsprang from a small beginning but grew to such an extent that the guidance of Roman mores and discipline was in its hands (‘morum disciplinaeque Romanae penes eam regimen’), the distinction between honourable and dishonourable amongst the senators and the centuries of the equites was under the judgement of that magistracy …This passage, with its mention of a regimen morum, is one of many which either attest explicitly or illustrate by anecdote that the censors concerned themselves with mores. In the eyes of several authors of antiquity it was this aspect which most strongly characterized the censorship, and there can be no doubt that it was a prominent and central feature.

APA, Harvard, Vancouver, ISO, and other styles

29

ZHANG, WEI, NA HAN, MIN ZHANG, YIN-FANG WANG, and CHANG-FA ZHOU. "The imaginal and detailed nymphal characters of Cincticostella fusca (Kang & Yang, 1995) (Ephemeroptera: Ephemerellidae)." Zootaxa 4729, no. 2 (January 29, 2020): 277–85. http://dx.doi.org/10.11646/zootaxa.4729.2.8.

Full text

Abstract:

Among the 17 known species of the genus Cincticostella, only five of them have been reported as both nymphs and imagoes, which does not include the Chinese species C. fusca Kang et Yang (1995). Here the nymphs are redescribed and reared imagoes are reported for the first time, based on material collected from southeastern China. Morphologically, the nymph is unique because of its large body size, expanded genae, pale median stripe on the anterior of the head, and dark tarsi. The male imago can be differentiated from congeners by its large body size, pigmented forewings, and the mesothoracic scutellum having a pair of membranous lamellae. More importantly, its penes are distinct, being fused for most of their length and having complex ventral projections. Adults emerge in early spring (March to April).

APA, Harvard, Vancouver, ISO, and other styles

30

BRUCE, NIEL L. "A new deep-water species of Natatolana (Crustacea: Isopoda: Cirolanidae) from the Chatham Rise, eastern New Zealand." Zootaxa 265, no. 1 (August 11, 2003): 1. http://dx.doi.org/10.11646/zootaxa.265.1.1.

Full text

Abstract:

Natatolana rekohu sp. nov. from the Chatham Rise, off southeastern New Zealand is described and figured. Natatolana rekohu was collected at a depth of 2799 metres, close to the greatest recorded depth for this genus. The species is a scavenger, and was feeding on dead fish in a sediment trap. Natatolana rekohu is characterised by: reduced eyes; strongly indented anterior margin of the head; pentagonal frontal lamina, with weakly convex lateral margins; pleonites 1 and 2 not produced, 3 weakly and pleonite 4 rounded; pereopods 1 and 2 usually with 5 or 6 setae on the propodal palm. In males the large flat and widely separated penes and the strongly curved, wide and terminally toothed appendix masculina are additional diagnostic characters. As in most Natatolana the numbers of robust setae on the margins of the uropodal rami and pleotelson are also important in making a correct identification.

APA, Harvard, Vancouver, ISO, and other styles

31

TESO, VALERIA, and GUIDO PASTORINO. "A revision of the genus Olivancillaria (Mollusca: Olividae) from the southwestern Atlantic." Zootaxa 2889, no. 1 (May 24, 2011): 1. http://dx.doi.org/10.11646/zootaxa.2889.1.1.

Full text

Abstract:

The genus Olivancillaria is revised and restricted to eight living species: O. deshayesiana, O. carcellesi, O. urceus, O. contortuplicata, O. orbignyi, O. teaguei, O. auricularia and O. vesica. The last two species were previously considered as subspecies. The name O. uretai is a junior synonym of O. orbignyi. The genus Olivancillaria is endemic to the southwestern Atlantic, ranging from Bahia state, Brazil (~12°S) to Chubut province (42°37’S), Argentina, intertidal to 70 m depth. It is a clear representative of the Argentine Malacological province. Redescriptions and re-illustration of types were done for each species. Shell ultrastructure, radulae, penes, siphon papillae and egg capsules are described and illustrated by SEM images. A geometric morphometric analysis was carried out to confirm shell variation on size and shape among species. The geographic distribution of each species is provided based on field observations as well as on museum records.

APA, Harvard, Vancouver, ISO, and other styles

32

PIRES-VANIN, ANA MARIA S. "The discovery of male Potiicoara brasiliensis (Crustacea, Spelaeogriphacea) with notes on biology and distribution." Zootaxa 3421, no. 1 (August 14, 2012): 61. http://dx.doi.org/10.11646/zootaxa.3421.1.3.

Full text

Abstract:

The male of Potiicoara brasiliensis is reported for the first time with evidence of sexual dimorphism. Male diagnosticcharacters are described and compared with the other three species of Spelaeogriphidae. Males present differential mor-phology on both distal podomere articles of the antennula and antenna, an elongate and curved bare endopod on pleopod2, a pair of short round penes on the sternum near the base of pereopod 7, and telson with dorsum almost smooth and apexstraight. Material is sampled for the first time from karstic areas north of the species type-locality, Gruta Ricardo Franconear Corumbá City, and Gruta do Curupira in the Araras Mountains. These new findings expand the distribution of thespecies over seven hundred kilometers. Comparisons between exemplars of both sexes are presented. A hypothesis on the distributional pattern of P. brasiliensis is introduced based on the geological history of Central-West Brazil.

APA, Harvard, Vancouver, ISO, and other styles

33

Ma, Zhenxing, and Changfa Zhou. "The Imaginal Characters of Neoephemera projecta Showing Its Plesiomorphic Position and a New Genus Status in the Family (Ephemeroptera: Neoephemeridae)." Insects 12, no. 8 (August 12, 2021): 723. http://dx.doi.org/10.3390/insects12080723.

Full text

Abstract:

The newly collected imaginal materials of the species Neoephemera projecta Zhou and Zheng, 2001 from Southwestern China, which is linking the other genera of the family Neoephemeridae, are described in detail. Nymphs are also photographed for the first time. The morphology of this species shows some characters of the other genera in Neoephemeridae and several autapomorphies. However, most characters can be seen as plesiomorphies of the family. Specifically, the dorsal-oriented fimbriate gills, projected frons and slim labial palpi in nymphs plus large reddishly pigmented wings, many crossveins, 4-segmented forceps with a relatively long basal segment, fused penes and unforked anal vein show that this species is closer to the taxon Fossoriae rather than to the previously considered Potamanthidae. To reflect its primitive position, a new genus, Pulchephemera Zhou gen. n., is established for this species, Pulchephemera projecta comb. n. Its eggs and observed biology are also described.

APA, Harvard, Vancouver, ISO, and other styles

34

Billakanti, Prakash B., and Ramachandra Bhat K. "PSEUDODIPHALLIA WITH DUPLICATION OF URETHRA. Pseudodifalia con duplicación de uretra." Revista Argentina de Anatomía Clínica 4, no. 1 (March 28, 2016): 14–19. http://dx.doi.org/10.31051/1852.8023.v4.n1.13946.

Full text

Abstract:

Se presenta un caso raro de “Pseudofalia” en un adulto de 50-60 años de edad, cuyo cuerpo fue donado al departamento de la anatomía del Hospital Universitario Kasturba, Manipal. El sujeto presentaba un pene verdadero, de tamaño normal y otro en miniatura junto a la zona ventral de estructura principal cercana al glande. El glande del pene verdadero no estaba cubierto por el prepucio. El pene accesorio estaba plenamente recubierto por piel y en la punta una depresión. La observación cercana mostró dos aberturas que indicaban conexión con la uretra. No había más prolongaciones indicando la presencia de glande en este apéndice. El escroto tenía apariencia normal con los testículos en el lugar. Las arterias y los nervios observados en el pene accesorio eran desviaciones del pene principal. Sin embargo las venas mostraban variaciones. La vena dorsal superficial derecha se originaba en el pene accesorio, mientras que la vena dorsal izquierda estaba formada por la unión de dos venas separadas procedentes del pene principal y el accesorio. Una parte pequeña del órgano accesorio fue para observaciones micros-cópicas, mostrando un cuerpo esponjoso como una extensión del pene verdadero. El corte mostraba dos canales uretrales rodeados por tejido esponjoso con espacios cavernosos. Los nervios y los vasos sanguíneos podían verse entre el tejido esponjoso. El epitelio parecía ser una clase de estratificado escamoso (no queratinado). No se observaron anomalías en el sistema urinario. We present a case of pseudodiphallia in a person whose body was donated to the anatomy department ofKasturbaMedicalCollege, Manipal. The age of the individual was approximately 50-60 years. There was the presence of true penis of normal size and miniature penis attached to the ventral aspect of main structure close to glans. The glans of the true penis was not covered by the prepuce. The accessory penis had full covering of skin and at the tip a depression. Close observation of this showed two openings indicating openings of the urethra. There was no enlargement to indicate the presence of glans in this appendage. The scrotum had normal appearance with the testes in place. Arteries and nerves observed on the accessory penis were derived from the main penis. However veins showed some variations. The superficial dorsal vein on the right side was originating from the accessory penis. Whereas, the left superficial dorsal vein was formed by the union two veins arising separately from the accessory and main penis.A small piece of the accessory organ was processed for microscopic observations, which showed the presence of corpus spongiosum only, as an extension from the true penis. The section showed two urethral channels surrounded by spongy tissue with cavernous spaces. Nerves and blood vessels could be seen among the spongy tissue. The epithelium appeared to be stratified squamous (non-keratinizing) type. No abnormalities were seen in the Urinary system.

APA, Harvard, Vancouver, ISO, and other styles

35

Bradley, R. D., D. J. Schmidly, and R. D. Owen. "Variation in the Glans Penes and Bacula among Latin American Populations of the Peromyscus boylii Species Complex." Journal of Mammalogy 70, no. 4 (November 27, 1989): 712–25. http://dx.doi.org/10.2307/1381706.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Papp-Wallace, Krisztina M., Christopher R. Bethel, Anne M. Distler, Courtney Kasuboski, Magdalena Taracila, and Robert A. Bonomo. "Inhibitor Resistance in the KPC-2 β-Lactamase, a Preeminent Property of This Class A β-Lactamase." Antimicrobial Agents and Chemotherapy 54, no. 2 (December 14, 2009): 890–97. http://dx.doi.org/10.1128/aac.00693-09.

Full text

Abstract:

ABSTRACT As resistance determinants, KPC β-lactamases demonstrate a wide substrate spectrum that includes carbapenems, oxyimino-cephalosporins, and cephamycins. In addition, clinical strains harboring KPC-type β-lactamases are often identified as resistant to standard β-lactam-β-lactamase inhibitor combinations in susceptibility testing. The KPC-2 carbapenemase presents a significant clinical challenge, as the mechanistic bases for KPC-2-associated phenotypes remain elusive. Here, we demonstrate resistance by KPC-2 to β-lactamase inhibitors by determining that clavulanic acid, sulbactam, and tazobactam are hydrolyzed by KPC-2 with partition ratios (k cat/k inact ratios, where k inact is the rate constant of enzyme inactivation) of 2,500, 1,000, and 500, respectively. Methylidene penems that contain an sp 2-hybridized C3 carboxylate and a bicyclic R1 side chain (dihydropyrazolo[1,5-c][1,3]thiazole [penem 1] and dihydropyrazolo[5,1-c][1,4]thiazine [penem 2]) are potent inhibitors: Km of penem 1, 0.06 ± 0.01 μM, and Km of penem 2, 0.006 ± 0.001 μM. We also demonstrate that penems 1 and 2 are mechanism-based inactivators, having partition ratios (k cat/k inact ratios) of 250 and 50, respectively. To understand the mechanism of inhibition by these penems, we generated molecular representations of both inhibitors in the active site of KPC-2. These models (i) suggest that penem 1 and penem 2 interact differently with active site residues, with the carbonyl of penem 2 being positioned outside the oxyanion hole and in a less favorable position for hydrolysis than that of penem 1, and (ii) support the kinetic observations that penem 2 is the better inhibitor (k inact/Km = 6.5 ± 0.6 μM−1 s−1). We conclude that KPC-2 is unique among class A β-lactamases in being able to readily hydrolyze clavulanic acid, sulbactam, and tazobactam. In contrast, penem-type β-lactamase inhibitors, by exhibiting unique active site chemistry, may serve as an important scaffold for future development and offer an attractive alternative to our current β-lactamase inhibitors.

APA, Harvard, Vancouver, ISO, and other styles

37

Ferragud, Carmel. "Bartomeu de Tresbens, físic i astròleg del Rei Pere el Ceremoniós i l’infant Joan: entre el servei a la corona i al municipi." Asclepio 70, no. 2 (December 20, 2018): 227. http://dx.doi.org/10.3989/asclepio.2018.11.

Full text

Abstract:

[ca] Bartomeu de Tresbens fou un metge, astròleg i filòsof al servei de dos reis de la Corona d’Aragó, Pere IV el Cerimoniós i el seu fill, el duc Joan, futur Joan I el Caçador, entre els anys 1360 i 1375, aproximadament. La seua important obra de contingut astrològic a penes ha estat estudiada, si n’exceptuem el Llibre de les nativitats. De la mateixa manera, la major part de la seua biografia ens és desconeguda. Conservem documents, correspondència fonamentalment, de la seua relació amb la monarquia, però també altres registres que el relacionen amb els municipis de Barcelona i Cervera. Molt particularment, en aquest segon cas, Tresbens va estar temptat per les autoritats municipals per fer de metge i possiblement de mestre. Aquest estudi fa un repàs a la seua biografia però se centra particularment en les negociacions del metge amb Cervera. Una estratègia amb la qual Tresbens sembla que volia assegurar un lloc on passar la resta dels seus dies i amb un sou desmesurat.

APA, Harvard, Vancouver, ISO, and other styles

38

SALLES, F. F., C. N. FRANCISCHETTI, and E. D. G. SOARES. "The presence of Homoeoneuria s.s. (Ephemeroptera: Oligoneuriidae) in South America with the description of a new species." Zootaxa 2146, no. 1 (July 1, 2009): 53–60. http://dx.doi.org/10.11646/zootaxa.2146.1.4.

Full text

Abstract:

In the present work a new species of Homoeoneuria is described based on nymphs and adults from Southeastern Brazil. Based on cladistics, the new species belongs to the subgenus Homoeoneuria.s.s. Homoeoneuria (H). watu sp. n., besides being the second species of the genus reported from South America, is the first representative of the subgenus from the region. The new species can be distinguished from the other described species of the genus by the following combination of characters: In the adult stage, (1) pronotum with prominent posteromedian pale yellow spot almost reaching anterior margin; (2) abdominal color pattern; (3) shape of penes. In the nymph, (1) head heavily washed with brownish-orange between compound eyes and ocelli; (2) antennal pedicels with short, thick setae; (3) small paired tubercles present on vertex and anterior margin of pronotum; (4) galea-lacinia of maxillae with submarginal row of 20–21 long, spinous setae; (5) abdominal color pattern. Comments on the biology of the new species are also provided.

APA, Harvard, Vancouver, ISO, and other styles

39

Yusa, Y., S. Yamato, M. Kawamura, and S. Kubota. "Dwarf males in the barnacle Alepas pacifica Pilsbry, 1907 (Thoracica, Lepadidae), a symbiont of jellyfish." Crustaceana 88, no. 3 (2015): 273–82. http://dx.doi.org/10.1163/15685403-00003414.

Full text

Abstract:

In the pedunculate barnacle Alepas pacifica Pilsbry, 1907, a symbiont of jellyfish, several small individuals were found attached to conspecifics rather than directly to the host. We investigated whether these individuals act as dwarf males, as is known in some other species of barnacles. The conspecific-attached individuals had longer penes than juvenile hermaphrodites of similar sizes attached directly to the jellyfish, although there was no other morphological difference between these two types of individuals. Only the largest conspecific-attached individual was ovigerous. We conclude that the conspecific-attached individuals are dwarf males, which develop the male function at a smaller size than hermaphrodites do, with a small possibility of becoming hermaphroditic. This is the first report of dwarf males, and hence of the coexistence of males and hermaphrodites (androdioecy), in the family Lepadidae. In addition, the record of A. pacifica attached to Nemopilema nomurai Kishinouye, 1922, is reported herein as new to science.

APA, Harvard, Vancouver, ISO, and other styles

40

Bethel, Christopher R., Anne M. Distler, Mark W. Ruszczycky, Marianne P. Carey, Paul R. Carey, Andrea M. Hujer, Magda Taracila, et al. "Inhibition of OXA-1 β-Lactamase by Penems." Antimicrobial Agents and Chemotherapy 52, no. 9 (June 16, 2008): 3135–43. http://dx.doi.org/10.1128/aac.01677-07.

Full text

Abstract:

ABSTRACT The partnering of a β-lactam with a β-lactamase inhibitor is a highly effective strategy that can be used to combat bacterial resistance to β-lactam antibiotics mediated by serine β-lactamases (EC 3.2.5.6). To this end, we tested two novel penem inhibitors against OXA-1, a class D β-lactamase that is resistant to inactivation by tazobactam. The Ki of each penem inhibitor for OXA-1 was in the nM range (Ki of penem 1, 45 ± 8 nM; Ki of penem 2, 12 ± 2 nM). The first-order rate constant for enzyme and inhibitor complex inactivation of penems 1 and 2 for OXA-1 β-lactamase were 0.13 ± 0.01 s−1 and 0.11 ± 0.01 s−1, respectively. By using an inhibitor-to-enzyme ratio of 1:1, 100% inactivation was achieved in ≤900 s and the recovery of OXA-1 β-lactamase activity was not detected at 24 h. Covalent adducts of penems 1 and 2 (changes in molecular masses, +306 ± 3 and +321 ± 3 Da, respectively) were identified by electrospray ionization mass spectrometry (ESI-MS). After tryptic digestion of OXA-1 inactivated by penems 1 and 2, ESI-MS and matrix-assisted laser desorption ionization-time-of-flight MS identified the adducts of 306 ± 3 and 321 ± 3 Da attached to the peptide containing the active-site Ser67. The base hydrolysis of penem 2, monitored by serial 1H nuclear magnetic resonance analysis, suggested that penem 2 formed a linear imine species that underwent 7-endo-trig cyclization to ultimately form a cyclic enamine, the 1,4-thiazepine derivative. Susceptibility testing demonstrated that the penem inhibitors at 4 mg/liter effectively restored susceptibility to piperacillin. Penem β-lactamase inhibitors which demonstrate high affinities and which form long-lived acyl intermediates may prove to be extremely useful against the broad range of inhibitor-resistant serine β-lactamases present in gram-negative bacteria.

APA, Harvard, Vancouver, ISO, and other styles

41

JACOBUS, LUKE M., W. P. McCAFFERTY, and ROBERT W. SITES. "A new species and first stage associations in Crinitella (Ephemeroptera: Ephemerellidae: Ephemerellinae)." Zootaxa 1611, no. 1 (October 10, 2007): 45–53. http://dx.doi.org/10.11646/zootaxa.1611.1.3.

Full text

Abstract:

The alates of Crinitella coheri (Allen and Edmunds) are described for the first time, and morphological variability of the species is discussed. Male adults have penes with dorsal projections at the base of the gonopores and forceps with a relatively straight lateral profile. Crinitella coheri female alates and associated eggs have been misidentified as those of a Hyrtanella species. Crinitella coheri is reported from Vietnam for the first time. We describe C. lacuna, new species, based on male and female subimagoes and larvae, and the species is included in Crinitella on the basis of genitalia morphology. Alates of C. lacuna are distinguished from C. coheri by the presence of a prominent dorsal longitudinal stripe, and larvae are distinguished by having paired median spines on abdominal terga, mouthparts that are not greatly reduced, and gills 3 that are relatively larger than those of C. coheri. Crinitella lacuna is reported from India, Thailand and Vietnam. The structures of Crinitella and Hyrtanella gill cavities are different and do not represent a synapomorphy for the two genera.

APA, Harvard, Vancouver, ISO, and other styles

42

PETERS, J. G., R. W. FLOWERS, M. D. HUBBARD, E. DOMINGUEZ, and H. M. SAVAGE. "New records and combinations for Neotropical Leptophlebiidae (Ephemeroptera)." Zootaxa 1054, no. 1 (September 27, 2005): 51. http://dx.doi.org/10.11646/zootaxa.1054.1.6.

Full text

Abstract:

Several species of Leptophlebiidae (Atalophlebiinae) from South and Central America are given new generic combinations based on improved knowledge of the Leptophlebiidae of the region. These are: Tikuna bilineata (Needham & Murphy, 1924, Choroterpes) comb. n.; Terpides vinculum (Traver, 1947, Choroterpes) comb. n.; Hermanella costalis (Navás, 1934, Thraulus) comb. n.; Ulmeritoides haarupi (Esben-Petersen, 1912, Thraulus) comb. n. (synonyms Deleatidium vittatum, Thew, 1960 syn. n. and Ulmeritoides fidalgoi Domínguez, 1995 syn. n.). In addition, we give new distribution records for Tikuna bilineata, report Choroterpes from Colombia, and describe Hagenulus marshalli sp. n. from Ecuador based on two male imagos. Hagenulus marshalli sp. n can be distinguished from other members of the genus by the asymmetrical fork of MP (small cross vein present) and the short, slightly twisted penes without apical spines. These are the first confirmed records for Choroterpes, Tikuna and Hagenulus from continental South America, extending Hagenulus from the Greater Antilles into Ecuador, Choroterpes from Central America into Colombia, and Tikuna from Costa Rica into Brazil, Colombia, Ecuador, Surinam and Venezuela.

APA, Harvard, Vancouver, ISO, and other styles

43

OLIVEIRA, IAN, ROGÉRIO CAMPOS, and ADOLFO R. CALOR. "New species of Miroculis Edmunds, 1963 (Ephemeroptera: Leptophlebiidae) based on nymphs and imagos from Chapada Diamantina’s Complex, Northeast Brazil." Zootaxa 4742, no. 3 (February 21, 2020): 543–54. http://dx.doi.org/10.11646/zootaxa.4742.3.8.

Full text

Abstract:

Miroculis Edmunds represents one of the most species-rich genera amongst Neotropical leptophlebiids comprising 25 valid species, with 18 of them reported from Brazil. Although several species have been described throughout the years, the taxonomy of Miroculis has focused mainly on male imagos, with other semaphoronts often unknown. Here, Miroculis (Miroculis) niltoi sp. nov. is described based on nymphs and imagos from Chapada Diamantina’s Complex, Northeast Brazil. Male imagos of M. (M.) niltoi sp. nov. can be distinguished by the styliger plate being medially cleft with a well-sclerotized ventrally-directed process at the posteromedial margin, while female imagos can be distinguished by the egg guide being well-developed, reaching sternum IX, and sternum IX about as long as wide, with a shallow apical cleft. Together with Miroculis (Miroculis) samba Costa, Almeida & Salles and Miroculis (Miroculis) wolverine Costa, Almeida & Salles, M. (M.) niltoi sp. nov. represents species within Miroculis with male imago exhibiting both extremely long penes and styliger plate. Now, Miroculis comprises 26 valid species, with 19 of them reported from Brazil.

APA, Harvard, Vancouver, ISO, and other styles

44

Arcila, Juan Fernando Uribe. "Ligadura de fuga venosa dorsal profunda en pene: Revisión de la literatura y técnica quirúrgica paso a paso." Revista Urología Colombiana / Colombian Urology Journal 29, no. 01 (December 9, 2019): 048–57. http://dx.doi.org/10.1055/s-0039-1698815.

Full text

Abstract:

ResumenLa disfunción venoclusiva peneana (VOD), está siendo reconocida como una causa importante de disfunción eréctil en especial en pacientes jóvenes. Recientemente se han sugerido fisiopatologías novedosas y se han mejorado notablemente los métodos diagnósticos, lo que genera un campo en redescubrimiento con nuevos enfoques de tratamiento disponibles. La ligadura de fuga venosa dorsal ha tenido dificultades a través de la historia para ser estandarizada. El artículo enfatiza que el diagnóstico adecuado es la base del éxito en esa patología, para cuya resolución presentamos una técnica quirúrgica asequible, aún en sitios con limitaciones tecnológicas, reproducible y con buenos resultados a corto y mediano plazo. Cuando se sospecha de una fuga venosa dorsal profunda que cause alteraciones hemodinámicas con un cierto tipo de disfunción eréctil, con penes que en erección alternan en estados de duro-blando, se configura un síndrome especial, con hallazgos clínicos y ecográficos típicos. Aunque existen algunas opciones médicas de tratamiento, se propone la corrección quirúrgica de la fuga venosa como el método ideal de tratamiento definitivo.

APA, Harvard, Vancouver, ISO, and other styles

45

EMMERICH, DANIEL, and CARLOS MOLINERI. "A new species of Campsurus (Ephemeroptera: Polymitarcyidae: Campsurinae) from Argentina and Uruguay and redescription of C. evanidus and C. jorgenseni with new synonymies." Zootaxa 2965, no. 1 (July 13, 2011): 51. http://dx.doi.org/10.11646/zootaxa.2965.1.4.

Full text

Abstract:

The subfamily Campsurinae (Ephemeroptera: Polymitarcyidae) includes one of the most specious genera of Ephemeroptera, Campsurus (with 40 known species), with a Pan-American distribution and its greatest diversity in South America. The following new synonymies are proposed: C. evanidus Needham & Murphy, 1924 (=C. juradinus Navás, 1930) and C. jorgenseni Esben-Petersen, 1912 (=C. scutellaris Needham & Murphy, 1924). Redescriptions, drawings and photographs are provided for both species. C. vulturorum sp. nov. from Argentina and Uruguay is described and illustrated for all life stages. It is characterized, in the adult stage, by: very large size (male fore wings 15.9–20.5 mm, female fore wings 21.0–28.0 mm), posterior margin of male abdominal sternum IX convex and rounded, pedestals subrectangular with a short projection on outer-posterior margin; penes widely separated distally, each arm formed by two lobes; and in mature nymphs by: mandibular tusks robust with a large submedian tubercle and six subapical rounded and small tubercles, maxilla with a short flat and triangular membranous gill on cardo.

APA, Harvard, Vancouver, ISO, and other styles

46

Poore, GCB, and HM Lew Ton. "The Holognathidae (Crustaea : Isopoda : Valvifera) expanded and redefined on the basis of body-plan." Invertebrate Systematics 4, no. 1 (1990): 55. http://dx.doi.org/10.1071/it9900055.

Full text

Abstract:

The Holognathidae are redefined on the basis of: semi-cylindrical body-plan, without laterally splayed coxal plates; parallel-sided and usually apically rounded pleotelson; and pereopod 4 much shorter than others, with spinose ischium-propodus. These features enable some species at least to have a tubicolous way of life. Four pleonites are defined laterally (and variously articulated or defined dorsally), the penes are separate, pleopods 1 and 2 have long apical setae, and maxillipedal palp articles 2 and 3 may be separated by a suture but never articulate. The family now includes 21 species in four genera: Cleantioides Kensley & Kaufman (junior synonym Miratidotea Kensley), Cleantis Dana (junior synonym Zenobiana Stebbing), Holognathus Thomson, and Zenobianopsis Hale. A key to genera is presented and the species are listed, several in new combinations. One of the two species of Holognathus, H. stewarti (Filhol) is the only valviferan with a mandibular palp, an attribute treated as an autapomorphy of the species. Three new speices, Cleantioides albaniensis from southern Australia, C. striata from New South Wales, and Holognathus karamea from New Zealand, are described. Other Australian species are redescribed where necessary.

APA, Harvard, Vancouver, ISO, and other styles

47

CASTELLÓ, JOSÉ. "New and little-known species of isopods (Crustacea, Isopoda) from the eastern Mediterranean." Zootaxa 4311, no. 2 (August 23, 2017): 151. http://dx.doi.org/10.11646/zootaxa.4311.2.1.

Full text

Abstract:

New species of Anthuridae and Cirolanidae (Crustacea, Isopoda) are described from the coasts of Cyprus and Lebanon, Mediterranean. Mesanthura pacoi sp. nov. is the first species of the genus found in the Mediterranean; its pale color, usually without dorsal spots, and the setation of the apical segment of the maxillipedal palp, are unique in this genus. Atarbolana beirutensis sp. nov. differs from the rest of species of this genus due to its uropodal exopod shaped like an elongated spoon, rather than a cylinder. This is the first record of the genus Atarbolana in the Mediterranean. The two species of Cirolana described have flat penes, absent in C. cranchi and C. manorae, the other two species found in this study; C. bitari sp. nov. has a depressed body and articles of antennal flagellum with one tuft of simple setae on the anterodistal angle, while in C. zibrowiusi sp. nov. the body is cylindrical, slightly depressed, and the articles of the antennal flagellum have two tufts of simple setae. In addition, one female specimen of Pseudocerceis, identified as P. cf. seleneides is described; it is the first record of this genus in the Mediterranean.

APA, Harvard, Vancouver, ISO, and other styles

48

Okamoto, Kiyomi, Naomasa Gotoh, and Takeshi Nishino. "Pseudomonas aeruginosa Reveals High Intrinsic Resistance to Penem Antibiotics: Penem Resistance Mechanisms and Their Interplay." Antimicrobial Agents and Chemotherapy 45, no. 7 (July 1, 2001): 1964–71. http://dx.doi.org/10.1128/aac.45.7.1964-1971.2001.

Full text

Abstract:

ABSTRACT Pseudomonas aeruginosa exhibits high intrinsic resistance to penem antibiotics such as faropenem, ritipenem, AMA3176, sulopenem, Sch29482, and Sch34343. To investigate the mechanisms contributing to penem resistance, we used the laboratory strain PAO1 to construct a series of isogenic mutants with an impaired multidrug efflux system MexAB-OprM and/or impaired chromosomal AmpC β-lactamase. The outer membrane barrier of PAO1 was partially eliminated by inducing the expression of the plasmid-encodedEscherichia coli major porin OmpF. Susceptibility tests using the mutants and the OmpF expression plasmid showed that MexAB-OprM and the outer membrane barrier, but not AmpC β-lactamase, are the main mechanisms involved in the high intrinsic penem resistance of PAO1. However, reducing the high intrinsic penem resistance of PAO1 to the same level as that of penem-susceptible gram-negative bacteria such as E. coli required the loss of either both MexAB-OprM and AmpC β-lactamase or both MexAB-OprM and the outer membrane barrier. Competition experiments for penicillin-binding proteins (PBPs) revealed that the affinity of PBP 1b and PBP 2 for faropenem were about 1.8- and 1.5-fold lower, than the respective affinity for imipenem. Loss of the outer membrane barrier, MexAB, and AmpC β-lactamase increased the susceptibility of PAO1 to almost all penems tested compared to the susceptibility of the AmpC-deficient PAO1 mutants to imipenem. Thus, it is suggested that the high intrinsic penem resistance of P. aeruginosa is generated from the interplay among the outer membrane barrier, the active efflux system, and AmpC β-lactamase but not from the lower affinity of PBPs for penems.

APA, Harvard, Vancouver, ISO, and other styles

49

Okamoto, Kiyomi, Naomasa Gotoh, and Takeshi Nishino. "Extrusion of Penem Antibiotics by Multicomponent Efflux Systems MexAB-OprM, MexCD-OprJ, and MexXY-OprM of Pseudomonas aeruginosa." Antimicrobial Agents and Chemotherapy 46, no. 8 (August 2002): 2696–99. http://dx.doi.org/10.1128/aac.46.8.2696-2699.2002.

Full text

Abstract:

ABSTRACT The high intrinsic penem resistance of Pseudomonas aeruginosa is due to the interplay among the outer membrane barrier, the active efflux system MexAB-OprM, and AmpC β-lactamase. We studied the roles of two other efflux systems, MexCD-OprJ and MexXY-OprM, in penem resistance by overexpressing each system in an AmpC- and MexAB-OprM-deficient background and found that MexAB-OprM is the most important among the three efflux systems for extrusion of penems from the cell interior.

APA, Harvard, Vancouver, ISO, and other styles

50

DE ASSIS SILVA, VINÍCIUS, FREDERICO FALCÃO SALLES, and ÂNGELO PARISE PINTO. "Thraulodes marianoi sp. nov., a remarkable new species of mayfly (Ephemeroptera: Leptophlebiidae) with dark wings from the southern Brazilian Atlantic Forest." Zootaxa 4860, no. 1 (October 9, 2020): 92–100. http://dx.doi.org/10.11646/zootaxa.4860.1.4.

Full text

Abstract:

Thraulodes marianoi sp. nov. is described, illustrated and diagnosed based on a single male imago from a subtropical forest at Pico do Marumbi State Park, in the protected area of Mananciais da Serra, state of Paraná, Brazil. Based on the dark coloration of legs and the large dark spot at base of forewing, T. marianoi sp. nov. is similar to species of the niger-group (Peruvian Amazonia) and to T. basimaculatus Giordano & Domínguez, 2005, a species endemic to Bolivia. The new species can be distinguished from all other species in the genus Thraulodes Ulmer, by the combination of following characteristics: (1) four cross-veins basal to bulla in forewing; (2) brown area covering about of proximal half of the forewing; (3) pleura violet; (4) middle and posterior femora yellowish washed with dark brown; (5) terga and sterna I–IV white washed with dark brown on posterior and lateral margin terga and sterna V–X dark brown; (6) penes short and wide with distolateral area, “ear-like” and poorly developed lateral pouch; (7) styliger plate triangular, median projection short and rounded on the apex. This new species represents the first record of the genus from the state of Paraná, Brazil.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Penes'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles