106 resultados para Mysteria darwini
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Cicognara,
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INTRODUCTION: Chagas disease is caused by Trypanosoma cruzi. Wild and perianthropic mammals maintain the infection/transmission cycle, both in their natural habitat and in the peridomestic area. The aim of this paper was to present the results from a study on wild rodents in the central and northern regions of San Luis province, Argentina, in order to evaluate the prevalence of this infection. METHODS: Sherman traps were set up in capture areas located between latitudes 32º and 33º S, and longitudes 65º and 66º W. The captured rodents were taxonomically identified and hemoflagellates were isolated. Morphological, biometric and molecular studies and in vitro cultures were performed. Infection of laboratory animals and histological examination of the cardiac muscle and inoculation area were also carried out. Parasites were detected in circulating blood in Calomys musculinus, Graomys griseoflavus, Phyllotis darwini and Akodon molinae. The parasites were identified using biological criteria. Molecular PCR studies were performed on some isolates, which confirmed the characterization of these hemoflagellates as Trypanosoma cruzi. RESULTS AND CONCLUSIONS: Forty-four percent of the 25 isolates were identified as Trypanosoma cruzi, and the remaining 56% as Trypanosoma cruzi-like. These findings provide evidence that wild rats infected with Trypanosoma cruzi and Trypanosoma cruzi-like organisms are important in areas of low endemicity.
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The author studied, the horizontal and vertical distribution of most common part of the flora and fauna of the bay of Guanabara at Rio de Janeiro. In this paper the eulittoral, poly, meso and oligohaline regions were localised and studied; and the first chart of its distribution was presented (fig. 2). The salinity of superficial waters was established through determinations based on 30 trips inside the buy for collecting biological materials. Some often 409 determinations which were previous reported together with the present ones served for the eleboration of a salinity map of the bay of Guanabara (fig. 1). This map of fig. 2 shows the geographic locations of the water regions. EULITTORAL WATER REGIME Fig. 3 shows the diagram scheme of fauna and flora of this regime. Sea water salinity 34/1.000, density mean 1.027, transparent greenish waters, sea coast with moderate bursting waves. Limpid sea shore with white sand, gneiss with the big barnacle Tetraclita squamosa var. stalactifera (Lam. Pilsbry. Vertical distributions: barna¬cles layers with a green region in which are present the oyster Ostrea pa-rasitica L., the barnacles Tetraclita, Chthamalus, Balanus tintinnabulum var. tintinnabulum (L.) e var. antillensis Pilsbry in connection with several mollusca and the sea beatle Isopoda Lygia sp. Covered by water and exposed to air by the tidal ritms, there is a stratum of brown animals that is the layer of mussels Mytilus perna L., with others brown and chestnut animals : the Crustacea Pachygrapsus, the little crab Porcellana sp., the stone crab Me-nippe nodifrons Stimpson, the sea stars Echinaster brasiliensis (Mull. & Tr.), Astropecten sp. and the sea anemones Actinia sp. Underneath and never visible there is a subtidal region with green tubular algae of genus Codium and amidst its bunches the sea urchin Lycthchinus variegatus (Agass.) walks and more deeply there are numerous sand-dollars Encope emarginata (Leske). The microplancton of this regime is Ceratiumplancton. POLYHALINE WATER REGIMB Water almost sea water, but directly influenced by continental lands, with rock salts dissolved and in suspension. Salinity: 33 to 32/1.000. This waters endure the actions of the popular nicknamed «water of the hill» (as the waters of mesohaline and oligohaline regimes), becoming suddenly reddish during several hours. That pheno¬menon returns several times in the year and come with great mortality of fishes. In these waters, according to Dr. J. G. FARIA there are species of Protozoa : Peridinea, the Glenoidinium trochoideum St., followed by its satellites which he thinks that they are able to secret toxical substances which can slaughter some species of fishes. In these «waters of the hill» was found a species of Copepoda the Charlesia darwini. In August 1946 the west shore of the Guanabara was plenty of killed fishes occupying a area of 8 feet large by 3 nautical miles of lenght. The enclosure for catching fishes in the rivers mouthes presents in these periods mass dead fishes. The phenomenon of «waters of the hill» appears with the first rains after a period of long dryness. MESOHALINE WATER REGIME Fig. 4 shows the the diagramm scheme. Salt or brackish water from 30 to 17/1.000 salinity, sometimes until 10/1.000. Turbid waters with mud in suspension, chestnut, claveyous waters; shore dirty black mud without waving bursting; the waters are warmer and shorner than those of the polihaline regime. Mangrove shore with the mangrove trees : Rhizophora mangle L., Avicennia sp., Laguncularia sp., and the »cotton tree of sea» Hibiscus sp. Fauna: the great land crab «guaimú» Cardisoma guanhumi Latr., ashore in dry firm land. There is the real land crab Ucides cordatus (L.) in wetting mud and in neigh¬ bourhood of the burrows of the fiddler-crabs of genus Uca. On stones and in the roots of the Rhizophora inhabits the brightly colored mangrove-tree-crab («aratu» Portuguese nickname) Goniopsis cruentata (Latreille) and the sparingly the big oyster Ostrea rhizophorae Guild. Lower is the region of barnacles Balanus amphitrite var. communis Darwin and var. niveus Darwin; Balanus tintinnabulum var. tintinnabulum (L.) doesn't grow in this brackish water; lower is the region of Pelecipoda with prepollency of Venus and Cytherea shell-fishes and the Panopeus mud crab; there are the sea lettuce Ulva and the Gastreropod Cerithium. The Paguridae Clibanarius which lives in the empty shells of Gasteropod molluscs, and the sessile ascidians Tethium plicatum (Lesuer) appears in some seasons. In the bottom there is a black argillous mud where the «one landed shrimps» Alpheus sp. is hidden. OLIGOHALINE WATER REGIME The salinity is lower than 10/1.000. average 8/1.000. There are no barnacles and no sea-beetles Isopods of genus Lygia; on the hay of the shore there are several graminea. This brackish water pervades by mouthes of rivers and penetrates until about 3 kilometers river above. While there is some salt dissolved in water, there are some mud crabs of the genus Uca, Sesarma, Metasesarma and Chasmagnatus. The presence of floating green plants coming from the rivers in the waters of a region indicated the oligohaline waters, with low salt content because when the average of NaCl increases above 8/1.000 these plants die and become rusty colored.
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Revision of the genus Mecocephala Dallas, 1851 (Heteroptera, Pentatomidae). The genus Mecocephala Dallas, 1851 is revised, and some taxonomic and geographical distribution data are evaluated. The following species are considered to belong to this genus: M. acuminata Dallas, 1851 = M. holmbergi Pirán, 1969 syn. nov., M. curculionoides Pirán, 1959, M. bonariensis sp. nov., M. magna sp. nov., M. maldonadensis sp. nov., and M. zikani sp. nov.; their distribution is restricted to southern Neotropical Region. Other species, formerly placed in Mecocephala, are considered, respectively: M. rubripes Berg, 1894 incertae sedis, M. darwini Kirkaldy, 1909 incertae sedis, M. atra Bergroth, 1914 incertae sedis, Paramecocephala uruguayensis (Pirán, 1970) comb. nov., Paramecocephala fusca (Haglund, 1868) comb. nov. A key to the species is presented.
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Palpibracus Rondani é um gênero de Muscidae que aloca 16 espécies, incluindo Palpibracus darwini sp. nov., descrita com base em espécimens macho de Concepción, Chile. Foi realizada uma análise cladística baseada em 31 caracteres morfológicos de adultos e utilizando 12 espécies como grupos externos. A análise mostrou que Palpibracus é um gênero monofilético cujo grupo-irmão é o gênero Brachygasterina. O relacionamento entre as espécies foi: (P. veneris ((P. albuquerquei (P. peruvianus, P. trivittatus)) (P. fasciculatus, P. nigriventris)) ((P. spicatus, P. uvivittatus) (P. lancifer (P. darwini sp. nov. (P. chilensis, P. confusus (P. pilosus ( P. similis (P. separatus, P. carvalhoi)))))))). Palpibracus apicalis Malloch foi alocada tentativamente em Psilochaeta Stein. É apresentada também uma chave para as espécies de Palpibracus.
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Sur le feuillet de garde A, cette note autographe de Mabillon : « Hic codex optimae notae scriptus est ante annos circiter octingentos. Multa scitu digna continet, maxime in triduo ante Pascha. In litaniis sabbati sancti fit supplicatio pro congregatione S. Petri, quem patronum habet Pictavensis ecclesia. Invocantur etiam in iisdem sanctus Hilarius et sancta Radegundis, qui praecipue ad ecclesiam Pictavensem pertinent ; sed nulla mentio de aliis sanctis ejusdem dioecesis. Haec scripsi XI kal. decembris an. 1695. — F. J. M. » Fol. 1 : « Benedictio episcoporum. — Consecratio ». Fol. 2 : « Oratio ad ordinandum praesbiterum. — Consecratio. ». Fol. 3 : « Oratio ad ordinandum diaconum. — Consecratio. » Fol. 4 : « Ordo qualiter in Romana ecclesia praesbiteri, diaconi, subdiaconi ordinandi sunt. » Fol. 5 : « Ordinatio subdiaconi ». Fol. 5v° : « Ordinatio ostiarii. » Fol. 6 : « Ordinatio lectoris ». Fol. 6v° : « Ordinatio exorcistae ». Fol. 7 : « Ordinatio acoliti ». Fol. 7v° : « Incipit ordo qualiter publice vel specialiter agitur modus paenitentiae secundum censuram ecclesiasticam, quod quarta feria quinquagesime inchoatur ». Fol. 8v° : « Confessio pura coram Deo et angelis et coram omnibus sanctis » : — de superbia (fol. 12) ; de inani gloria (fol. 13) ; de invidia (fol. 13 vo) ; de ira (fol. 14 vo) ; de tristitia (fol. 15) ; de avaricia (fol. 16) ; de ventris ingluvie (fol. 20) ; de luxuria (fol. 23). Fol. 40v° : « Missa pro paenitentibus et confitentibus, sive unus sive plures fuerint ». Fol. 43 : « Denunciatio scrutinii quod tertia ebdomada in quadragesima secunda feria iniciatur ». Fol. 43v° : « Oratio super electos ad catecuminum faciendum ». Fol. 44 : « Benedictio salis dandi caticuminis. » — Prières et exhortations aux catéchumènes. Explication des évangiles. Fol. 54-56 : Le Credo, en grec avec traduction latine au-dessus. La traduction est faite de mot à mot. Pour l'article grec, le traducteur s'est contenté de mettre au-dessus, dans le texte latin, ces lettres ar. (articulus). Fol. 58v° : Explication du Pater. Fol. 60v° : « Incipit missa primi scrutinii ». Fol. : 63 : « Alia missa de secundo scrutinio ». Fol. 66v° : « Missa de tertio scrutinio ». Fol. 70 : « Sabbato ante diem Palmarum ». Fol. 72 : « Dominica indulgentiae quae est dies Palmarum ». Fol. 73 : Les 36 premiers vers de la pièce Gloria, laus de Théodulfe, évêque d'Orléans (Henry Martin signale l'éd. qu'en a fait Duemmler dans les Poetae latini aevi carolini, t. I, p. 558 : « Gloria, laus et honor tibi sit, Christe redemptor, Cui puerile decus promsit osanna pium. Israhel es tu rex Davidis et inclita proles, Nomine qui in Domini, rex benedicte, venis... » Fol. 95 :« Feria II post Palmas ». Fol. 98v° : « Feria tertia ». Fol. 130 : « Feria V, quae est cena Domini ». Fol. 141v° : « Alia missa eodem die, si plures ad reconciliandum venerint ». Fol. 154 : « Missa chrismalis ». Fol. 160 : Litanies. A noter : SS. Denys, Quentin, Julien, Géréon, Hilaire, Martin, Aignan, Benoît, Cloud [Clodoald], Ste Geneviève. Fol. 170v° : « Benedictio chrismatis principalis ». Fol. 171 : « Exorcismus olei ad baptizandos ». Fol. 173v° : In cena Domini de Flavius, évêque: « Versus Flavii episcopi ad mandatum in cena Domini ». « Tellus a cethra jubilent in magni cena principis, Que protoplasti pectora vite purgavit ferculo ; Hac nocte factor omnium potenti sat mysterio Carnem suam cum sanguine in escam transfert anime. — Tellus. » Fol. 174 : « Item versus Bedae » (Bède). « Fuit Domini dilectus languens a Bethania Lazarus beatus sacris olim cum sororibus quas Jhesus eternus Amor diligebat plurimum Martham simul et Mariam, felices per secula. » Fol. 174v° : « Feria VI quae est Parasceve ». Fol. 192v° : « Pange lingua gloriosi Proelium certaminis ». Fol. 193 : « Incipit de sabbato sancto. — Ordo baptisterii ». Fol. 200v° : Litanies. A noter : SS. Quentin, Cucuphat, Julien, Lucien, Hilaire, Martin, Benoît, Germain, Columban, Samson ; SStes Geneviève, Brigitte, Colombe, Radegonde, Aldegonde. — A noter aussi (fol. 201 vo) : « Ut exercitum Francorum conservare digneris. — Ut illum abbatem et cunctam congregationem sancti illius in tuo apto servitio conservare digneris... » Fol. 202 : « Benedictio cerei. — Exultet jam angelica turba coelorum. Exultent divina mysteria... », avec neumes. Fol. 208 : Litanies. A noter : SS. Hilaire, Martin, Ambroise, Maur, Maurille, Lezin, évêque d'Angers ; SStes Blandine, Nathalie. Fol. 210 : « Inde canitur hic versus : »« Urbs beata Hierusalem, dicta pacis visio, que construitur in celis vivis ex lapidibus... » Fol. 210v° : « Benedictio fontis ». Fol. 213 : vers « Tibi laus perennis auctor baptismatis... » Fol. 213v° : Litanies. A noter : SS. Martin, Brice, Médard, Vaast, Germain, Marcel, Hilaire ; SStes Reine, Julienne, Gertrude, Colombe, Geneviève, Afre, Radegonde, Aldegonde, Darie, Brigitte, Paule. — A noter (fol. 215) : « Ut exercitum Francorum conservare digneris. — Ut congregationem sancti Petri in tuo apto servitio conservare digneris ». Fol. 223 : « Finit ordo baptisterii ». Fol. 227 : Le jour de Pâques. Fol. 230v° : « Feria II ». Fol. 241 : « Feria quinta ». Fol. 245v° : « Feria VI ». Fol. 248 : « Sabbato ». Fol. 252v° : « In octavis Paschae ». Fol. 256v° : « Missa in octavis Paschae pro baptizatis ». Fol. 257v° : « Missa pro parroechias in diebus paschalibus... ». Fol. 258v° : « Fides catholica continens credulitatem... » Fol. 269 : « Missa pro conjugibus sterilitate infecundis in procreatione prolis ». Fol. 273v° : « Orationes ad benedicendam aquam aspergendam in domo. — Exorcismus salis ». Fol. 274 : « Benedictio salis. — Exorcismus aque. — Benedictio aque ». Fol. 274v° : « Benedictio salis et aquae... » etc. Fol. 275 : « Exorcismus salis et aquae contra fulgura ». Fol. 276 : « Benedictio salis ad pecora. — Orationes ad clericum faciendum ». Fol. 276v° : « Benedictio putei ». Fol. 277 : « Benedictio frugum novarum ». Fol. 277v° : « Benedictio panis. — Oratio ad capillarum (sic). — Alia ad tonsorandum puerum ». Fol. 278 : « Oratio post tonsionem. — Oratio ad barbas tondendas ». Fol. 278 : « lncipit actio pontificalis ad... » . Le verso du feuillet 279 est tout à fait effacé. Neumes français, du IXe s., aux f. 202-204 (l'Exultet) ; addition du Xe s. au f. 203 v° (Bernard).
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Several competing hypotheses attempt to explain how environmental conditions affect mass-independent basal metabolic rate (BMR) in mammals. One of the most inclusive and yet debatable hypotheses is the one that associates BMR with food habits, including habitat productivity. These effects have been widely investigated at the interspecific level under the assumption that for any given species all traits are fixed. Consequently, the variation among individuals is largely ignored. Intraspecific analysis of physiological traits has the potential to compensate for many of the pitfalls associated with interspecific analyses and, thus, to be a useful approach for evaluating hypotheses regarding metabolic adaptation. In this study, we investigated the effects of food quality, availability, and predictability on the BMR of the leaf-eared mouse Phyllotis darwini. BMR was measured on freshly caught animals from the field, since they experience natural seasonal variations in environmental factors ( and, hence, variations in habitat productivity) and diet quality. BMR was significantly correlated with the proportion of dietary plants and seeds. In addition, BMR was significantly correlated with monthly habitat productivity. Path analysis indicated that, in our study, habitat productivity was responsible for the observed changes in BMR, while diet per se had no effect on this variable.
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Succession was already studied over decades. The present thesis investigated the succession on hard substrate at two different study sites within the fjord Comau, Chile. Nine plates were installed at both sites (mouth of fjord and inner fjord) and photographed over three years. Additionally the natural community was recorded and a ground truthing was carried out to verify the analyzed species. Respectively at both sites over 50 different species were identified. Abundance data decreased with only one exception continuously, whereas the percentage cover increased. But the communities on the recruitment plates do still not reach the community structure of the natural environment. The present data showed that the hard-bottom succession in the fjord Comau is best described by the TOLERANCE MODEL (Connell & Slatyer, 1977). An important species of the natural community is the stony coral Desmophyllum dianthus, which normally (outside the fjord) grows beneath 1000 m water depth. The results of this work indicate that the mature community is not reached after 36 months.