105,295 research outputs found
Diamysis lagunaris Ariani & Wittmann 2000
No full text<i>Diamysis lagunaris</i> Ariani & Wittmann, 2000 <p>Fig. 17 A–J</p> <p> <i>Mysis bahirensis</i> G. O. Sars, 1877 (partim: material from La Spezia): Gourret 1897; Sudry 1910.</p> <p> <i>Diamysis bahirensis</i>: Băcescu 1941; Genovese 1956; Drake <i>et al.</i> 1997; Cunha <i>et al.</i> 2000; San Vicente & Munilla 2000; Goulletquer <i>et al.</i> 2002; Munilla & San Vicente 2005.</p> <p> <i>Diamysis bahirensis</i> ssp.: Ariani 1979 (partim: material from Lake Ganzirri).</p> <p> <i>Diamysis</i> sp. B: Wittmann 1999.</p> <p> <i>Diamysis</i> sp.: Wittmann & Ariani 2000.</p> <p> <i>Diamysis lagunaris</i> Ariani & Wittmann, 2000: 2004, 2005; Ariani 2004; Anderson 2008; Petrescu & Wittmann 2009; Petryashov 2009; Wittmann & Ariani 2009, 2010, 2012a; San Vicente 2010; ITIS 2014; Mees 2014; Wittmann <i>et al.</i> 2014.</p> <p> <b>Material examined.</b> Two samples from marine waters of the eastern Mediterranean, 32 samples from brackish and marine waters of the western Mediterranean, plus 3 from the E-Atlantic (Portugal): see Ariani & Wittmann (2000), Wittmann & Ariani (2012a). Among these 37 positive samples only one from the oligohaline reach (<i>S</i> = 3.4): 1 M subad. 4.7 mm from the Mediterranean coast of France, Canal d'Arles à Fos, 43.4663N 004.8338E; previously unpublished sample: 2 M ad. 5.4–5.6 mm, 1 F ad. 6.7 mm, among ~30,000 <i>Mesopodopsis slabberi</i> and 2 <i>Limnomysis benedeni</i>, Mediterranean coast of France, estuary of the Petit Rhône at Tiki, same sample as indicated above for <i>M. slabberi</i>, NHMW reg. no. 25707.</p> <p> <b>Diagnosis</b> (sensu lato: covering the known population range). Eyes normal, eyestalks dorsally with welldeveloped fenestra paracornealis (Fig. 17 B), although not well visible in poorly pigmented eyestalks. Rostrum forms a wide convex angle with broadly rounded tip (Fig. 17 A, B). Carapace without fringes in both sexes (Fig. 17 A). Palpus of maxilla with distal segment subcircular, armed with 5–25 distinct denticles. Pereiopods of moderate length, eighth endopod extending to the maxillae or at most up to mandibles. All pereiopods with normal carpopropodus and slender, styliform claw (Fig. 17 D). Basal segment of thoracic exopods with outer corner spiniform (Fig. 17 C) or occasionally rounded in some of the posterior exopods, most often rounded in last exopod. Pereiopods poorly to markedly slender, with R6 = 4.8–8.1 (Fig. 17 D). Carpopropodus of thoracic endopods 3–8 with 3–2 (4), 2–3, 2, 2, 2, and 2–3 segments, respectively; tarsus slender, with slender, in part feebly serrated claw; carpopropodus 3 longer than 5 times its maximum width (Fig. 17 D). Exopod of fourth male pleopod 2-segmented with a large modified seta and often an additional minute seta at tip; basal segment with smooth seta and one (0–2) additional, small, barbed seta; endopod with distinct subbasal articulation (Fig. 17 E). Scutellum paracaudale terminally well rounded or biconvex with rounded (rarely acute) apex (Fig. 17 F–H), its lower margin occasionally almost straight. Endopod of uropod with one strong spine below statocyst, statolith composed of vaterite. Telson (Fig. 17 J) subquadrangular to subtriangular, length 1.1–1.5 its maximum width or 0.7–1.0 times length of last abdominal somite; maximum width near basis 2.1–2.7 times that at apex; each lateral margin armed with 6–16 spines. Apical cleft 11–19% telson length, cleft lined by 9–23 laminae, its margins straight to convex.</p> <p> <i>Body length.</i> Adult females 4.1–8.1 mm, males 3.6–6.6 mm.</p> <p> <b>Distribution</b> (Fig. 6). Mainly in the western Mediterranean: along the coasts of the Tyrrhenian, Sardinian and Ligurian Seas, Golfe du Lion, Strait of Messina; rare in the eastern Mediterranean: Island of Crete in the Aegean Sea. The populations at the Atlantic coasts of southern Spain and Portugal may have originated from Mediterranean lagoons by transfer in ballast water (Cunha <i>et al.</i> 2000: as <i>D. bahirensis</i>), although an indigenous status of the Atlantic populations is not excluded (Wittmann & Ariani 2012a). Type locality is the mixoeuhaline to weakly metahaline lagoon Lago di Caprolace at the Lazio coast, Tyrrhenian Sea. The species is mostly found in mixoeuhaline to metahaline lagoons, also in marine coastal habitats as well as mesohaline to mixoeuhaline reaches of estuaries. Normal salinity range 14–49; so far only two positive samples from the oligohaline reach (<i>S</i> = 2–3), taken at different stations in the Rhône Delta on the Mediterranean coast of France.</p>Published as part of <i>Wittmann, Karl J., Ariani, Antonio P. & Daneliya, Mikhail, 2016, The Mysidae (Crustacea: Peracarida: Mysida) in fresh and oligohaline waters of the Mediterranean. Taxonomy, biogeography, and bioinvasion, pp. 1-70 in Zootaxa 4142 (1)</i> on pages 36-38, DOI: 10.11646/zootaxa.4142.1.1, <a href="http://zenodo.org/record/261102">http://zenodo.org/record/261102</a>
A. Wittmann. Kosmas und Damian
No full textCoquin R.-G. A. Wittmann. Kosmas und Damian. In: Revue de l'histoire des religions, tome 177, n°2, 1970. pp. 223-224
A. Wittmann. Kosmas und Damian
No full textCoquin R.-G. A. Wittmann. Kosmas und Damian. In: Revue de l'histoire des religions, tome 177, n°2, 1970. pp. 223-224
Die Anwendung der linearen Programmierung und der Simulation auf die langfristige Produktions-, Investitions- und Finanzplanung eines Textilunternehmens, Band 3: Die Planung mit Hilfe der Simulation
No full textDie Anwendung der linearen Programmierung und der Simulation auf die langfristige Produktions-, Investitions- und Finanzplanung eines Textilunternehmens. - Augsburg, Univ., Diss. Bd. 1. Die Datenerhebung / von G. Ortlieb u. F. Wittmann. - 1975. - IV, 183 S. Bd. 2. Die Planung mit Hilfe der linearen Programmierung / von G. Ortlieb. - 1975. - II, 193 S. Bd. 3. Die Planung mit Hilfe der Simulation / von F. Wittmann. - 1975. - VII, 346 S
Möglichkeit und Effekt einer vorschulischen leitlinienbasierten Frühdiagnostik der Aufmerksamkeitsdefizit-/ und Hyperaktivitätsstörung (ADHS)
No full textWittmann G. Möglichkeit und Effekt einer vorschulischen leitlinienbasierten Frühdiagnostik der Aufmerksamkeitsdefizit-/ und Hyperaktivitätsstörung (ADHS). Bielefeld: Universität Bielefeld; 2013
Die Anwendung der linearen Programmierung und der Simulation auf die langfristige Produktions-, Investitions- und Finanzplanung eines Textilunternehmens, Band 1: Die Datenerhebung
No full textDie Anwendung der linearen Programmierung und der Simulation auf die langfristige Produktions-, Investitions- und Finanzplanung eines Textilunternehmens. - Augsburg, Univ., Diss. Bd. 1. Die Datenerhebung / von G. Ortlieb u. F. Wittmann. - 1975. - IV, 183 S. Bd. 2. Die Planung mit Hilfe der linearen Programmierung / von G. Ortlieb. - 1975. - II, 192 S. Bd. 3. Die Planung mit Hilfe der Simulation / von F. Wittmann. - 1975. - VII, 346 S
Anticipation of novelty recruits reward system and hippocampus while promoting recollection
No full textThe dopaminergic midbrain, which comprises the substantia nigra and ventral tegmental area (SN/VTA), plays a central role in reward processing. This region is also activated by novel stimuli, raising the possibility that novelty and reward have shared functional properties. It is currently unclear whether functional aspects of reward processing in the SN/VTA, namely, activation by unexpected rewards and cues that predict reward, also characterise novelty processing. To address this question, we conducted an fMRI experiment during which subjects viewed symbolic cues that predicted either novel or familiar images of scenes with 75% validity. We show that SN/VTA was activated by cues predicting novel images as well as by unexpected novel images that followed familiarity-predictive cues, an 'unexpected novelty' response. The hippocampus, a region implicated in detecting and encoding novel stimuli, showed an anticipatory novelty response but differed from the response profile of SN/VTA in responding at outcome to expected and 'unexpected' novelty. In a behavioural extension of the experiment, recollection increased relative to familiarity when comparing delayed recognition memory for anticipated novel stimuli with unexpected novel stimuli. These data reveal commonalities in SN/VTA responses to anticipating reward and anticipating novel stimuli. We suggest that this anticipatory response codes a motivational exploratory novelty signal that, together with anticipatory activation of the hippocampus, leads to enhanced encoding of novel events. In more general terms, the data suggest that dopaminergic processing of novelty might be important in driving exploration of new environments
„Ehrlich währt am längsten“ - Realistische Tätigkeitsvorschau bei Führungsnachwuchskräften
No full textWittmann A, Maier GW, Rappensperger G. „Ehrlich währt am längsten“ - Realistische Tätigkeitsvorschau bei Führungsnachwuchskräften. Mitteilungen des Sonderforschungsbereichs 333. Vol 9. München; 1995
Crystal structure of Rab9 complexed to GDP reveals a dimer with an active conformation of switch II
No full textAbstractThe small GTPase Rab9 is an essential regulator of vesicular transport from the late endosome to the trans-Golgi network, as monitored by the redirection of the mannose-6-phosphate receptors. The crystal structure of Rab9 complexed to GDP, Mg2+, and Sr2+ reveals a unique dimer formed by an intermolecular β-sheet that buries the switch I regions. Surface area and shape complementarity calculations suggest that Rab9 dimers can form an inactive, membrane-bound pool of Rab9·GDP that is independent of GDI. Mg2+-bound Rab9 represents an inactive state, but Sr2+-bound Rab9·GDP displays activated switch region conformations, mimicking those of the GTP state. A hydrophobic tetrad is formed resembling an effector-discriminating epitope found only in GTP-bound Rab proteins
Mysidium (Mysidium) triangulare Wittmann, sp. nov.
No full textMysidium (Mysidium) triangulare Wittmann sp. nov. urn:lsid:zoobank.org:act: B0EB7822-4D13-4D05-8C40-2A7F01297301 Figs 5–8 Etymology The species name is a Latin adjective with neutral ending, referring to the triangular terminal portion of the telson. Type material examined Holotype (by present designation) CURAÇAO • ♂ ad. bl 5.2 mm; sublittoral marine waters of Curaçao, Playa Lagun; 12.3181° N, 69.1511° S. #C8; NHMW 26487. Paratypes (by present designation) CURAÇAO • 57 ♂♂ ad. bl 3.8–5.7 mm, 44 ♀♀ ad. bl 4.8–5.9 mm, 8 subad.; same locality data as for holotype; #C8; MINGA MYS 436, NHMW 26488, ZMH K-55260. Other material examined CURAÇAO • 2 ♀♀ ad. bl 5.3–5.5 mm, 3 ♂♂ ad. bl 4.0– 4.2 mm; #C3; MINGA MYS 430 • 1 ♀ subad. bl 3.5 mm; associated with swarm of M. integrum freely swimming in the entrance area of cave; #C10. Definition All features diagnosed above for genus and subgenus Mysidium Dana, 1852. Cornea globose in lateral view; calotte-shaped in dorsal view, with diameter 1.7–2.5 times as long as terminal segment of antennular trunk. Eyestalks smooth. Rostrum triangular, apically pointed to well rounded, not extending beyond basis of eyestalks. Antero-lateral edges of carapace rounded. Only males with anterior margin of antennular trunk dorsally with rounded, shield-like, mediodistal extension (Fig. 5A–B); longitudinal series of 6–10 setae extending all over this extension plus a short proximal stretch. The largest seta 0.1–0.3 times extension length. Appendix masculina bilobate, densely setose; its length 1.5–2.0 times terminal segment of antennular trunk. Length of antennal scale 5–7 times maximum width, scale reaching far beyond antennular trunk. Median segment of mandibular palp with setae on both margins. Almost evenly rounded hump on outer face of distal segment of maxillula. Carpopropodus two-segmented in thoracic endopods 1–2, 8, or three-segmented in endopods 3–7, except that endopods 6, 7 may be twosegmented in some females. Basal segment occupies 0.4–0.5 times total length of carpopropodus of endopod 3. Pleopod 1 representing a stout, bilobate plate in both sexes. Sympod of male pleopod 4 with endite reduced to a weak medial hump or missing. Exopod with basal segment occupying 56–63% total length. Endopod reduced to lobe with 10–16% sympod length; lobe apically with one long, barbed seta and more proximally with additional 4–6 shorter, barbed setae. Endopod of uropods 0.6–0.8 times as long as exopod. Telson spatulate, length 1.9–2.1 times maximum width near basis; median portion with concave lateral margins, terminal portion triangular with rounded tip. Proximal 52–64% of lateral margins smooth; distal portion of each margin with continuous series of 5–11 acute spines, this series extending up to the corner with the triangular apical portion. Margin of the triangular portion densely furnished with a total of 21–24 strong, apically blunt laminae. Description BODY SIZE. Adult females 4.8–5.9 mm (n = 46), males 3.8–5.7 mm (n = 61). ANTENNAL APPENDAGES (Fig. 5A–B, F–G). Antennular trunk extends 10–50% its length beyond (artificially aligned) eyes. First to third segments occupy 46–57%, 15–18% or 28–36% total trunk length, respectively. Trunk dorsally with forward directed small, setose lobes near terminal margin of each segment: two lobes from basal, one from median, and one from terminal segment (not counting the mediodistal extension of anterior margin in males). Appendix masculina 0.4–0.5 times total trunk length, antennal scale 1.1–1.5 times trunk. Sympod of antenna produced into spiniform extension on outer distal corner. Antennal scale with terminal segment occupying 13–24% total length and bearing five plumose setae. MOUTH PARTS (Figs 5H, J, 6A–C). Mandibular palp without spines; terminal segment with strong, modified, bent seta at apex, and barbed setae along inner and outer margins. Median segment of palp with angular, medially directed dilatation, both its margins setose. Proximal segment normal, with smooth margins. Distal segment of maxillula terminally with strong spines, subterminally with one barbed seta; tip of endite of maxillula with apically modified setae (armed with stiff barbs) plus several shorter setae with normal, fine barbs. Maxilla with well-developed exopod, moderately large, two-segmented palp, and three apically setose endites. Exopod with maximum width in median portions; its outer margin all along with series of plumose setae. Basal segment of palp with three barbed setae. Apical segment about two times as long as basal segment. Length of apical segment 2.0–2.5 times maximum width, densely setose on terminal margin but lined by small hairs along more than basal half of inner margin. Apex of palp with two strong, modified setae bearing strong, spine-like barbs along distal third of their inner margin. FOREGUT (Fig. 8A–F). Essentially as in M. antillarum sp. nov. (Fig. 11A–E). As main differences from that species, M. triangulare sp. nov. shows less strongly serrated, apically pronged, large spines: on each lateral half there are two spines (Fig. 8E) on posterior part of lateralia; and a longer one (Fig. 8F) on dorso-lateral infolding; the latter inserting in more median position than in M. antillarum sp. nov. THORAX OF BOTH SEXES (Figs 5C–D, 6D–G, 7A–C). Carapace (Fig. 5C–E) posteriorly emarginate, with well-rounded latero-terminal lobes; cervical sulcus strong; roughly V-shaped group of 11–14 pores (Fig. 5E) in front of cervical sulcus, transverse linear series of 13–18 pores (Fig. 5D) in cardial position (above heart). Sternites smooth; a plumose seta accompanied by a shorter barbed seta on the joint between each sternite and the corresponding thoracopods (Fig. 6D). Sizes of endopods and exopods increase from thoracopod 1 to 4 or 5 and decrease from 5 to 8. Basal plate of exopods 1–7 with large, well rounded latero-distal expansion (Figs 6D, F, 7A–B). Flagellum 8-segmented in exopod 1 versus 9-segmented in exopods 2–7. First endopod (Fig. 6D) with well developed, setose endites from basis, ischium, merus. First thoracic epipod bilobate, with smooth margins, without seta. Endopods 1–2 with large dactylus and strong claw (Fig. 6D–E). Dactylus of thoracic endopod 2 with 3–6 modified and several smooth setae, no spine-like setae; modified setae each with two dense rows of strong, acute barbs along their median to subterminal portions. Endopods 3–7 with less stout, well developed dactylus bearing a long, needle-like claw (Fig. 6G); endopod 8 with seta-like claw (Fig. 7C). Endopod 8 (when stretched) reaching backwards at most to end of pleonite 3 and forwards to maxillula; its carpopropodus measures 0.4–0.5 times telson length. THORACOPODS OF FEMALES (Figs 7A, 8G). Basal plate of exopod 8 with short to indistinct latero-distal expansion; its flagellum only 8-segmented. Oostegites of thoracopods 7–8 densely fringed with setae, together forming a large brood chamber. Thoracopod 6 (Fig. 7A) with rudimentary oostegite bearing 1–2 long setae at apex. These setae spinulose at least along their apical third. More such setae present in proximal portions of oostegite from thoracopod 7 (Fig. 8G). THORACOPODS OF MALES AND PENIS (Fig. 7B–C). Basal plate of exopod 8 with yet distinct latero-distal expansion; its flagellum 9-segmented. Penes pear-shaped, apically widening; 0.9–1.0 times as long as merus of endopod 8. Penes apically bilobate, with row of 4–5 smooth, bent setae flanking the ejaculatory opening. Two additional, smaller, straight setae subapically on margin opposite to bent setae. PLEON (Figs 7D–M, 8H–L). Pleonites 1–5 are 0.6–0.7, 0.7–0.8, 0.7–0.9, 0.8–0.9 or 0.7–0.9 times as long as pleonite 6, respectively. Scutellum paracaudale (Fig. 8H, J) triangular, apically pointed to narrowly rounded; margins weakly concave to convex. Uropodal endopod (Fig. 8K) 1.0–1.3 times, exopod 1.4– 1.7 times as long as pleonite 6. Length of exopod 7–9 times maximum width. Exopod extends 0.2–0.3 times its length beyond endopod or 0.5–0.6 times beyond telson; endopod 0.3–0.5 times its length beyond telson. Telson (Fig. 8L) 0.5–0.6 times as long as exopod of uropods, 0.7–0.8 times endopod or 0.8–0.9 times pleonite 6. PLEOPODS OF FEMALES (Fig. 7D–G). Pleopods 1–5 subequal in length. Pleopods 1–2 reduced to small bilobate plates, pleopods 3–5 to small, setose rods. Pleopods 1–4 with a ventro-laterally directed fan of plumose setae. Pleopod 1 with clearly the largest setae, although not as large as in males. PLEOPODS OF MALES (Fig. 7H–M). Length increases from pleopod 1 to 4. Pleopod 5 is about the same length as pleopod 1, but less stout. Pleopods 1–3 with a ventro-laterally directed fan of plumose setae; pleopod 1 with the largest setae of that kind. Fourth pleopod reaching to terminal 50–80% of pleonite 6; its subapical seta reaching up to apex of telson. Its four-segmented exopod with basal segment longest, second segment longer than third, third segment longer than fourth. Subterminal segment of exopod with a very long seta bearing dense series of minute bristles along its distal half; short terminal segment with comparatively large but shorter seta at tip, this seta with characteristic set of barbs (Fig. 7L) along its distal half. Endopod with apical seta 2.0–2.8 times endopod length. Sympod with field of scales on its medial widening, or in analogous position upon missing widening. STATOLITHS. Composed of fluorite; shape ellipsoidal to spherical in dorsal view (Fig. 8K); discoidal in lateral view, maximum diameter 89–107 µm, thickness 45–54 µm, measured in 10 adults. Tegmen moderately, though always distinctly convex; fundus weakly concave. Sagittal section very similar to that figured by Wittmann et al. (1993: fig. 6P) for Heteromysis formosa S.I. Smith, 1873. Statolith formula 2 + 3 + 1 + (8–13) = 14–19. NAUPLIOID LARVAE (Fig. 8M–N). Smooth cuticle all around, except for a pair of minute furcal processes and a number of minute setae on the blunt end of the abdomen. Distribution and habitat So far only known from euhaline, sublittoral waters of Curaçao (12° N), where the mysids occur in swarms hovering during daytime around and between corals.Published as part of Wittmann, Karl J. & Wirtz, Peter, 2019, Revision of the amphiamerican genus Mysidium Dana, 1852 (Crustacea: Mysida: Mysidae), with descriptions of two new species and the establishment of two new subgenera, pp. 1-48 in European Journal of Taxonomy 495 on pages 16-23, DOI: 10.5852/ejt.2019.495, http://zenodo.org/record/258486
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