324 research outputs found
Doto uva Er. Marcus 1955
No full textDoto uva Er. Marcus, 1955 (Figures 6C, 6D, 7C, 7D) Material examined. Argentina, San Matías gulf: Plataforma, one specimen, 10 m, 21/02/2017 (ESCM-Ma-50); Plataforma, one specimen, 7 m, 03/2017; La Salvadora, three specimens, 11 m, 04/2017 (ESCM-Ma-46); Plataforma, three specimens (two specimens deposited MLP-Ma 14657) 10 m, 08/2017; Plataforma, four specimens, 5 m, 09/2017; Plataforma, three specimens, 8 m, 01/2018 (ESCM-Ma-18). Description. Length up to 8 mm, body elongate and smooth, translucent whitish with darker spots. Smooth rhinophores with blunt apices, surrounded by rhinophore sheaths. Up to six cerata are present on each side of the body, it has 3-5 rings of 3-6 semiglobular tubercles and a tubercle at the top. The tubercles decrease in size towards the peduncle (Figure 6C). Radular formula 75-90 x 0.1.0 (MLP-Ma 14657). The rachidial teeth are arched with up to five lateral denticles on each side of the central cusp (Figures 7C, 7D). Geographic distribution and depth range. Key Largo, Florida (Marcus & Marcus 1960); S„o Paulo, Brazil (Marcus 1957); Gulf of Ancud to Bay of Coliumo, Chile (Schrödl 2003), whereas Fischer & Cervera (2005) considerably extended its known geographical distribution to northern Chilean coast (see Fischer et al. 2006) and Peru (Uribe et al. 2013). Found on rocky bottoms between four and 12 m depth. Biology. Found on hard bottoms associated with hydrozoans. Difficult to find due to its small size. The lightcream colored egg masses are thin, undulating ribbon of about 5 mm length. It is filled with numerous tiny, oval, encapsulated eggs (Figure 6D). Remarks. The genus Doto has three species in the Argentinean Province, Doto caramella Marcus, Er. 1957, Doto pita Marcus, Er. 1955 and Doto uva Marcus, Er. 1955 (García & Bertsch 2009). This species was originally described for S„o Sebasti„o, Brazil (Marcus 1955), later Marcus (1959) recorded it in the Gulf of Ancud, extending its distribution to the southern coast of Chile. Schrödl et al. (2005) recorded it from the southern Chile in the Comau Fjord. Fischer & Cervera (2005), considerably extend the known distribution range to Tongoy and Tocopilla and the Chilean coast. Uribe et al. (2013) extend the distribution north to Ica, Bahia Independencia, Peru. In the present work, the know range of the species is expanded to the Argentine Sea. This wide southern South America distribution should be confirmed with further integrative studies.Published as part of Cetra, Nicolás & Roche, Andrea, 2023, Nudibranchia (Mollusca: Gastropoda) from San Matías Gulf, Northern Argentine Patagonia, pp. 455-473 in Zootaxa 5244 (5) on pages 467-468, DOI: 10.11646/zootaxa.5244.5.3, http://zenodo.org/record/766383
Figure 5 in A new large and colourful species of the genus Doto (Nudibranchia: Dotidae) from South Africa
No full textFigure 5. Living specimens. (A) Doto coronata (Gmelin, 1791). Specimen from Northern Ireland. Photo by Bernard Picton; (B) Doto cf. coronata. Specimen from South Africa, Cape Province, Oudekraal. Photo by T.M. Gosliner; (C) Doto rosea Trinchese, 1881. Specimen from Catalunia, Spain Photo by Antoni López-Arenas; (D) Doto pinnatifida (Montagu, 1804). Specimen from Northern Ireland. Photo by Bernard Picton.Published as part of Pola, Marta & Gosliner, Terrence M., 2015, A new large and colourful species of the genus Doto (Nudibranchia: Dotidae) from South Africa, pp. 2465-2481 in Journal of Natural History 49 (41) on page 2475, DOI: 10.1080/00222933.2015.1034211, http://zenodo.org/record/400075
Sportello osseo peduncolato per la rimozione chirurgica di un impianto dentale dislocato nel seno mascellare: caso clinico = Pedicled bone lid for surgical removal of a dental implant displaced into the maxillary sinus: case report
No full textObiettivi
Illustrare l’utilizzo di uno sportello osseo peduncolato alla membrana di Schneider del seno mascellare come tecnica chirurgica per l’approccio intraorale di rimozione di corpi estranei intrasinusali.
Materiali e metodi
Il caso clinico riguarda un paziente di sesso maschile di 47 anni, inviato alla nostra attenzione con un impianto dentale dislocato nel seno mascellare in assenza di sintomatologia. La rimozione del corpo estraneo migrato è stata effettuata mediante l’esecuzione, con strumentazione piezoelettrica, di uno sportello osseo rettangolare sulla parete antero-laterale del seno mascellare, mantenendo un peduncolo di collegamento superiore con la membrana intrasinusale.
Risultati
Il decorso postoperatorio è avvenuto in completa assenza di complicanze.
Conclusioni
Lo sportello osseo peduncolato proposto da Biglioli e Goisis [16] si rivela una tecnica chirurgica affidabile ed efficace per la rimozione di corpi estranei dislocati nei seni mascellari con approccio intraorale.Objectives
The aim of this report is to show the use of a pedicled bone lid attached to the Schneider membrane of the maxillary sinus as a surgical procedure for removing intrasinus foreign bodies.
Materials and methods
This case-report describes a 47-year old male patient, presenting to our attention with dental implant displaced into the maxillary sinus.
Foreign body removal was performed by means of a rectangular bone lid, traced on the anterolateral wall of the maxillary sinus with a piezoelectric device, albeit preserving an upper attachment pedicle to the intrasinus membrane.
Results
No postoperative complications were recorded.
Conclusions
The pedicled bone lid technique, as proposed by Biglioli e Goisis [16], is an effective and reliable surgical procedure for removing foreign bodies from the maxillary sinus with an intraoral approach
Removal of a Dental Implant Displaced into the Maxillary Sinus by Means of the Bone Lid Technique
No full textBackground. Rehabilitation of edentulous jaws with implant-supported prosthesis has become a common practice among oral surgeons in the last three decades. This therapy presents a very low incidence of complications. One of them is the displacement of dental implants into the maxillary sinus. Dental implants, such as any other foreign body into the maxillary sinus, should be removed in order to prevent sinusitis. Methods. In this paper, we report a case of dental implant migrated in the maxillary sinus and removed by means of the bone lid technique. Results and Conclusion. The migration of dental implants into the maxillary sinus is rarely reported. Migrated implants should be considered for removal in order to prevent possible sinusal diseases. The implant has been removed without any complications, confirming the bone lid technique to be safe and reliable
Doto splendida Pola & Gosliner 2015, sp. nov.
No full textDoto splendida sp. nov. (Figures 1–3) Doto sp. I Pola and Gosliner, 2010: 935 Type material Holotype: adult specimen, 5 mm preserved (South Africa, western Cape Province, western False Bay, Miller’ s Point, 34°13.84 ′ S, 18°28.47 ʹ E; intertidal, found feeding on Eudendrium [California Academy of Sciences (CASIZ176124)]. Collected by T. M. Gosliner, 3 January 2008. Paratype: one adult specimen completely dissected and sequenced for molecular studies, 20 mm alive (10 mm preserved), water depth: 3 m (same locality, date and collector as holotype) [CASIZ176123]. Etymology The specific name refers to the beautiful and conspicuous colour of the animal. From the Latin word splendidus, meaning brilliant, magnificent appearance. Distribution Thus far this species is only known from Western Cape Province, South Africa. External morphology (Figure 1) The body is slender and elongate (Figure 1A). Its length reaches 20 mm alive. The head bears a pair of smooth rhinophores with blunt apices, surrounded by rhinophoral sheaths that reach half of the total length of the rhinophores in living specimens (Figure 1A). The sheaths are rather slender, the diameter being double that of the rhinophore itself. Above, the sheaths are undulate, trumpet-shaped with their anterior side ending with a rather long, tongue-like projection at the upper end (Figure 1A). A wide oral veil is present in front of the rhinophores. It is entire, rounded and expanded laterally, without projections. On each side of the body, up to 7 cerata occur, the hindmost usually being smaller than the anterior and middle cerata. The cerata are large, elongate, with rounded tubercles that decrease in size basally towards the body. The base of the cerata is not pedunculate. Each ceras bears six or seven rings of six–seven simple or more complex semiglobular tubercles and one larger tubercle at the top (Figure 1A, B). At the inner side of a ceras a pseudobranch is situated with 4–5 ramifications of varying lengths. The genital opening is located slightly below and in front of the first ceras on the right side, and protrudes as a cylindrical genital papilla. On this side, between the first and second cerata, the anus and nephroproct together form a prominent papilla. The pericardium starts just behind the first ceras. The posterior end of the foot is long and limaciform (Figure 1A). The posterior end of the foot is narrow and extends slightly from under the mantle. The pericardium forms a swelling on the back, between the first and second cerata. Colouration (Figure 1). The body is transparent, with a faint orange hue covered with occasional small opaque white dots dispersed over the frontal veil, the upper half of the rhinophores, the borders of their sheaths, the posterior end of the foot and the tubercles of the cerata. The yellow digestive gland is clearly visible through the transparent faint orange body wall. The branches of the digestive gland in the cerata are intense pink. The tubercles of the cerata are faint orange, similar to the ground colour with small white dots more or less abundant (Figure 1A, B). The foot is transparent. Internal anatomy (Figures 2, 3) The jaws are very thin with a smooth masticatory process. The uniseriate radula is composed of 85 horseshoe-shaped teeth with three strong lateral denticles on either side of the median cusp (Figure 2A, B). The salivary glands are located just in front of the buccal bulb. They have a globular appearance opening into the oesophagus via a thin duct. Furthermore, above and at the posterior end of the salivary glands, there are three rounded giant cells. The pedal gland lies at the anterior part of the foot and around the oral opening. It is composed of numerous semispherical follicles. The reproductive system is androdiaulic (Figure 3). The hermaphroditic gland is granulate, appearing as a compact mass clearly visible under the mantle. It is connected with the ampulla by a narrow hermaphroditic duct. The ampulla is large, thick and elongate. The rather long, postampullary duct splits into the vas deferens and the oviduct. The vas deferens begins as a large pyriform prostate gland and then tapers into a long and thin vas deferens with several loops and entering into the muscular penial bulb. Within the penial bulb is the elongate, conical and unarmed penis (Figure 2B, C). The oviduct is rather wide and elongated, forming a U-shaped loop before it dilates into the seminal receptacle, a spacious sac similar in length and width to the prostate gland. It continues with the vagina, which is short and slender. The female glands are very well developed and open together with the vagina. Molecular data (Figure 4) As indicated in Table 1, some gene fragments were not available for the analysis; in particular some nuclear fragments of the gene H3 and some 16S fragment for some isolated species of Doto are missing. After alignment 1472 bp were used. We obtained 18 new sequences; 6 for H3, 6 for COI and 6 for 16S. The saturation plots of uncorrected differences against corrected sequence divergence divided by codon indicated no saturation for any gene (not shown). Figure 4 shows the phylogenetic hypothesis based on the combined data set represented by BI. Figure 4 clearly indicates that D. splendida sp. nov. represents a distinct lineage and that it clusters with two eastern Pacific (from the Pacific coast of Mexico and California, respectively) species rather than with any other Atlantic taxa. The available species of Doto constitute a clade with the maximum support (PP = 1; BS = 100). Doto pinnatifida, D. coronata, D. eireana, D. floridicola and D. koenneckeri form a well-supported clade (PP = 0.98; BS = 78) while D. splendida sp. nov. clusters with D. columbiana and Doto sp. H (PP = 0.99; BS = 72). The phylogenetic relationship of this clade with the one including D. antarctica, Doto sp. 2, Doto sp. 7, Doto sp. K and D. ussi (PP = 0.98; BS = 87) is not resolved. DNA sequences for Doto rosea are not available, but the morphological differences highlighted below clearly separate D. rosea of the new species. The sister taxon to the genus Doto is not yet fully resolved. Figure 4 shows that Hancockia californica is closer than Notobryon or Dendronotus, but this relationship is not supported either by the analysis of Bayesian inference nor by maximum-likelihood analysis.Published as part of Pola, Marta & Gosliner, Terrence M., 2015, A new large and colourful species of the genus Doto (Nudibranchia: Dotidae) from South Africa, pp. 2465-2481 in Journal of Natural History 49 (41) on pages 2469-2473, DOI: 10.1080/00222933.2015.1034211, http://zenodo.org/record/400075
Doto ussi Ortea 1982
No full textDoto ussi Ortea, 1982 (Figure 27 J) Material examined. Three specimens. MB28-005041, NHR, 0 4 Aug. 2016, 5m, 18mm; ZMBN105080, VIRW, 14 May 2015 m 7m, 8mm; ZMBN105145, VIPP, 19 May 2015, 7m, 6mm. Habitats. Tropical coral reefs. Occurrences. Nuarro and Vamizi Island. Geographic distribution. Indo-west Pacific. Papua New Guinea, Australia, Philippines, Indonesia (Gosliner et al. 2008), Comoros Islands (Ortea 1982), Madagascar (Gosliner et al. 2008) and Mozambique.Published as part of Tibiriçá, Yara, Pola, Marta & Cervera, Juan Lucas, 2017, Astonishing diversity revealed: an annotated and illustrated inventory of Nudipleura (Gastropoda: Heterobranchia) from Mozambique, pp. 1-133 in Zootaxa 4359 (1) on page 86, DOI: 10.11646/zootaxa.4359.1.1, http://zenodo.org/record/106916
Doto pygmaea Bergh 1871
No full textDoto pygmaea Bergh, 1871 (Figure 3 (h)) Material examined Cala d’Aiguablava, Begur (Spain), 41°56 ʹ 13.4”N, 3°13 ʹ 08.6”E, 22 June 2018, 0 m depth, 6 spcs, juveniles and adults, L = 2–5 mm; Cala Maset caves, Sant Feliu de Guíxols (Spain), 41°47 ʹ 10.5”N, 3°2 ʹ 44.6”E, 11 February 2020, 0.1 m depth, 7 spcs, adults and egg masses, L = 5–10 mm. External morphology Body elongate, narrow, background colour white with black patches to completely black. Rhinophores elongate, transluscent white. Cerata displayed in a sinuous ‘S’ fashion with white tubercles only on the external part, the inner part being almost smooth. Ecology Specimens found on floating debris. The specimens from Aiguablava were living on plastic debris eating hydrozoan colonies, probably of the genus Obelia. The specimens of Cala Maset were living on floating wood. Slugs mated and laid egg masses while eating hydrozoans of the genus Tubularia. Egg masses are shaped like a winding cord forming an ‘S’; egg colour is yellowish. Distribution Italy (Schmekel and Portmann 1982); Spain: Canary Islands (Cervera et al. 2004), Spanish Levantine coast (Cervera et al. 2004), Catalonia (this study). Remarks This species can be differentiated from other Doto species by having a black body with very elongated rhinophores, a smooth edge on the rhinophoral sheath, and ‘S’-shaped cerata, the inner part being almost smooth and the external with tubercles aligned longitudinally (Ortea et al. 1997). Family PHYLLIROEIDAE Genus Phylliroe Péron and Lesueur, 1810Published as part of Salvador, Xavier, Fernández-Vilert, Robert & Moles, Juan, 2022, Sea slug night fever: 39 new records of elusive heterobranchs in the western Mediterranean (Mollusca: Gastropoda), pp. 265-310 in Journal of Natural History 56 (5 - 8) on pages 280-282, DOI: 10.1080/00222933.2022.2040630, http://zenodo.org/record/675843
Doto cervicenigra Ortea and Bouchet 1989
No full textDoto cervicenigra Ortea and Bouchet, 1989 (Figure 3 (f)) Material examined Cala Maset caves, Sant Feliu de Guíxols (Spain), 41°47 ʹ 10.5”N, 3°2 ʹ 44.6”E, 13 April 2016, 0.3 m depth, 1 spc., L = 5 mm; 31 December 2017, 1.2 m depth, 3 spcs, juveniles and adults, L = 15 mm; 13 January 2018, 0.4 m depth, 2 spcs, L = 3–7 mm; 31 December 2017, 1.2 m depth, 3 spcs, juveniles and adults, L = 15 mm; Le Ponton, Étang de Thau, Sète (France), 43°25 ʹ 28.5”N, 3°42 ʹ E, 13 April 2018, 0.2 m depth, 4 spcs, adults, L = 7–10 mm; 21 May 2018, 0.2 m depth, 12 spcs, adults and egg masses, L = 7–10 mm; la Farge, Étang de Thau, Sète (France), 43°25 ʹ 48”N, 3°42 ʹ 14”E, 21 May 2018, 0.2 m depth, 17 spcs, adults and egg masses, L = 7–10 mm; Port de Sant Feliu (Spain), 41°46 ʹ 42.2”N, 3°02 ʹ 16.4”E, 29 January 2020, 0.2 m depth, 11 spcs, adults, juveniles and egg masses, L = 2–12 mm; Arenys de Mar port (Spain), 41°34 ʹ 38.8”N, 2°33 ʹ 23.5”E, 15 February 2020, 0.2 m depth, 2 spcs, adults, L = 10 mm; Port de Blanes (Spain), 41°40 ʹ 25.5”N, 2°47 ʹ 48.6”E, 2 March 2020, 0.2 m depth, 2 spcs, adults, L = 6–10 mm; Mar Menor, Cartagena (Spain), 37°38 ʹ 6”N, 0°44 ʹ 10.3”W, 27 September 2020, 0.3 m depth, 7 spcs, juveniles, adults and egg masses, L = 2–6 mm. External morphology Body elongate, narrow, background colour white with black marks all along but most concentrated in the head area. Rhinophores black with white tips. Cerata with tubercles, apical part black. Ecology Specimens were found at shallow depths where there was an influx of fresh water, on rocks and hydrozoans, possibly Obelia spp., feeding and laying large, short, linear, white egg masses (very different from the characteristic egg masses of the genus Doto, with an ‘S’ shape) at the bottom of the colony. Found to be more active at night. Distribution Corsica (Ortea and Bouchet 1989); Italy (Chiarore et al. 2019); Spain: Spanish Levantine coast (this study), Mallorca (GROC 2009–2021), Catalonia (this study); France (this study). Remarks This species is easily distinguished from Doto conspecifics by the presence of black rhinophores and small tubercles with a black dot in the cerata (Ortea and Bouchet 1989).Published as part of Salvador, Xavier, Fernández-Vilert, Robert & Moles, Juan, 2022, Sea slug night fever: 39 new records of elusive heterobranchs in the western Mediterranean (Mollusca: Gastropoda), pp. 265-310 in Journal of Natural History 56 (5 - 8) on pages 279-280, DOI: 10.1080/00222933.2022.2040630, http://zenodo.org/record/675843
Doto fragilis
No full textDoto fragilis (Forbes, 1838) (Figure 3 (g)) Material examined Punta del Romaní, L’Escala (Spain), 42°6 ʹ 54”N, 3°10 ʹ 9”E, 6 March 2021, 9 m depth, 1 spc., juvenile, L = 10 mm. External morphology Body elongate, cream to brown, with numerous white spots in oral veil. Rhinophoral sheath and back with numerous white spots in juveniles; rhinophoral sheath completely white in adults. Cerata beige to ochre, darker than body. Rhinophores homogeneously ochre. Ecology This species frequents cold waters, feeding on colonies of hydrozoans, especially of the genus Nemertesia Lamouroux, 1812, on which it lays egg masses in the form of a pink ribbon. Distribution Widely recorded in the north-eastern Atlantic to the Galician coast (Ortea et al, 1978); Mediterranean Sea: Catalonian coast (this study). Remarks Often found feeding on Nemertesia antenninna (Linnaeus, 1758). This is the first record in the Mediterranean Sea, wherein it was observed inside a cave feeding on Kirchenpaueria pinnata (Linnaeus, 1758); after two weeks the specimen and its prey were not found anymore.Published as part of Salvador, Xavier, Fernández-Vilert, Robert & Moles, Juan, 2022, Sea slug night fever: 39 new records of elusive heterobranchs in the western Mediterranean (Mollusca: Gastropoda), pp. 265-310 in Journal of Natural History 56 (5 - 8) on page 280, DOI: 10.1080/00222933.2022.2040630, http://zenodo.org/record/675843
Membrane association and polar localization of the Legionella pneumophila T4SS DotO ATPase mediated by two nonredundant receptors
No full textThe Legionella pneumophila Dot/Icm type IVB secretion system (T4BSS) is a large, multisubunit complex that exports a vast array of substrates into eukaryotic host cells. DotO, a distant homolog of the T4ASS ATPase VirB4, associates with the bacterial inner membrane despite lacking hydrophobic transmembrane domains. Employing a genetic approach, we found DotO's membrane association is mediated by three inner-membrane Dot/Icm components, IcmT, and a combined DotJ-DotI complex (referred to as DotJI). Although deletion of icmT or dotJI individually does not affect DotO's membrane association, the simultaneous inactivation of all three genes results in increased amounts of soluble DotO. Nevertheless, deleting each receptor separately profoundly affects positioning of DotO, disrupting its link with the Dot/Icm complex at the bacterial poles, rendering the receptors nonredundant. Furthermore, a collection of dotO point mutants that we isolated established that DotO's N-terminal domain interacts with the membrane receptors and is involved in dimerization, whereas DotO's C-terminal ATPase domain primarily contributes to the protein's formation of oligomers. Modeling data revealed the complex interaction between DotO and its receptors is responsible for formation of DotO's unique "hexamer of dimers" configuration, which is a defining characteristic of VirB4 family members
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