1,386 research outputs found
Myxobolus bragantinus n. sp. (Cnidaria: Myxosporea) from the gill filaments of the redeye mullet, Mugil rubrioculus (Mugiliformes: Mugilidae), on the eastern Amazon coast
No full textCardim, Joyce, Silva, Diehgo, Hamoy, Igor, Matos, Edilson, Abrunhosa, Fernando (2018): Myxobolus bragantinus n. sp. (Cnidaria: Myxosporea) from the gill filaments of the redeye mullet, Mugil rubrioculus (Mugiliformes: Mugilidae), on the eastern Amazon coast. Zootaxa 4482 (1): 177-187, DOI: 10.11646/zootaxa.4482.1.
Myxobolus bragantinus Cardim & Silva & Hamoy & Matos & Abrunhosa 2018, n. sp.
No full textMyxobolus bragantinus n. sp. Host: Mugil rubrioculus Harrison et al. 2007. Locality: Municipality of Bragança, northeastern Pará, Brazil. Site of infection: Gill filaments Plasmodial type: Intrafilamental-epithelial (FE) Prevalence: 60% (90/150). Type material: Slides containing cysts with spores in the gill filament, which were processed by embedding in paraffin, and stained with Ziehl-Neelsen (Fig. 2a). These specimens were deposited in the International Protozoan Type Specimen Collection at the Brazilian National Institute of Amazonian Research (INPA) in Manaus, Amazonas, Brazil (catalog number: INPA 34). Etymology: The species name, bragantinus, refers to the collection site, at Bragança, in the Brazilian state of Pará, where the microparasite was discovered and described for the first time. The histological analysis shows cysts lodged internally in the gill filament, located in the intermediate portion, causing hypertrophy, a moderate increase in the size of the filaments, associated with the presence of the parasitic cysts of Myxobolus bragantinus n. sp., and a thickening of the cyst wall (Fig. 2 a–b). Under light microscopy, the ZN-stained slides revealed spores characteristic of Myxobolus (Lom & Dykova 2006), featuring polar capsules (see Fig. 2b). The location of the parasite in the gills, is known as the “intrafilamental-epithelial” (FE) type.Published as part of Cardim, Joyce, Silva, Diehgo, Hamoy, Igor, Matos, Edilson & Abrunhosa, Fernando, 2018, Myxobolus bragantinus n. sp. (Cnidaria: Myxosporea) from the gill filaments of the redeye mullet, Mugil rubrioculus (Mugiliformes: Mugilidae), on the eastern Amazon coast, pp. 177-187 in Zootaxa 4482 (1) on pages 179-181, DOI: 10.11646/zootaxa.4482.1.9, http://zenodo.org/record/144054
Edward Schumacher-Matos Lecture
No full textBorn in Colombia, Schumacher-Matos was in the U.S. illegally from age 14 until age 21, when he went to court, was allowed to declare his citizenship, and joined the Army to serve in Vietnam. He was educated at Vanderbilt University and the Fletcher School of Law and Diplomacy at Tufts University, served as a Fulbright Fellow in Japan, and as a Bi-National Commission Fellow in Spain. He also was executive director of the Spanish Institute in New York, a nonprofit dedicated to U.S.-Spanish political, economic and cultural affairs. The Robert F. Kennedy Professor for Latin American Studies at Harvard University, Schumacher-Matos is also a Shorenstein Fellow on the Press, Politics and Public Policy at Harvard\u27s Kennedy School of Government, where he teaches a graduate seminar on immigration from Latin America into the U.S. and is writing a book on the subject. Schumacher-Matos applies his rich experiences—immigrant, soldier, reporter, editor, publisher, author, ombudsman, professor, academic fellow—to his weekly, syndicated column on national and international affairs. His work has appeared in the influential journal Foreign Affairs, and he has published numerous op-ed articles, which, he says, express the value of human dignity over self-righteousness and realism over wishful thinking. His talk was the keynote address of Susquehanna University\u27s 16th annual Latino Symposium
Kudoa ajurutellus n. sp. (Multivalvulida: Kudoidae), a parasite of the skeletal musculature of the Bressou sea catfish, Aspistor quadriscutis, in northeastern of the State of Pará
No full textNeto, José Pompeu Araújo, Cardim, Joyce, Da Silva, Diehgo T., Hamoy, Igor, Matos, Edilson, Abrunhosa, Fernando (2020): Kudoa ajurutellus n. sp. (Multivalvulida: Kudoidae), a parasite of the skeletal musculature of the Bressou sea catfish, Aspistor quadriscutis, in northeastern of the State of Pará. Zootaxa 4718 (3): 371-380, DOI: https://doi.org/10.11646/zootaxa.4718.3.
Morphological and Molecular Characteristics of Kudoa viseuensis n. sp. (Myxosporea: Multivalvulida), Found in the Muscle of Batrachoides surinamensis (Teleostei: Batrachoididae) in the Brazilian Amazon Region
No full textMonteiro, Elideth Pacheco, Da Silva, Diehgo Tuloza, Sanches, Osimar, Hamoy, Igor, Matos, Edilson Rodrigues (2019): Morphological and Molecular Characteristics of Kudoa viseuensis n. sp. (Myxosporea: Multivalvulida), Found in the Muscle of Batrachoides surinamensis (Teleostei: Batrachoididae) in the Brazilian Amazon Region. Acta Protozoologica 58 (1): 7-16, DOI: 10.4467/16890027AP.19.002.10833, URL: http://dx.doi.org/10.4467/16890027ap.19.002.1083
A new species of myxozoa in the skeletal striated musculature of Rhamdia quelen (Quoy & Gaimard) (Siluriforme: Pimelodidae) Amazonian fish, Marajó island, Brazil
No full textAbrunhosa, Jacqueline, Sindeaux-Neto, Jose L., Santos, Sidney, Hamoy, Igor, Matos, Edilson (2018): A new species of myxozoa in the skeletal striated musculature of Rhamdia quelen (Quoy & Gaimard) (Siluriforme: Pimelodidae) Amazonian fish, Marajó island, Brazil. Zootaxa 4482 (1): 164-176, DOI: 10.11646/zootaxa.4482.1.
FIGURE 3 in Myxobolus bragantinus n. sp. (Cnidaria: Myxosporea) from the gill filaments of the redeye mullet, Mugil rubrioculus (Mugiliformes: Mugilidae), on the eastern Amazon coast
No full textFIGURE 3. Phylogenetic tree generated by the Bayesian Inference (BI) analysis of the aligned partial SSU rRNA gene sequences of Myxobolus bragantinus n. sp. and related myxosporeans. The GenBank accession numbers are shown adjacent to the species names. The numbers at the nodes are posterior probability values calculated for BI. The new species is shown in bold type.Published as part of Cardim, Joyce, Silva, Diehgo, Hamoy, Igor, Matos, Edilson & Abrunhosa, Fernando, 2018, Myxobolus bragantinus n. sp. (Cnidaria: Myxosporea) from the gill filaments of the redeye mullet, Mugil rubrioculus (Mugiliformes: Mugilidae), on the eastern Amazon coast, pp. 177-187 in Zootaxa 4482 (1) on page 183, DOI: 10.11646/zootaxa.4482.1.9, http://zenodo.org/record/144054
Modeling and analysis of the hydratation of pea grain author: edilson sadayuki omoto
No full textMathematical models for estimating water concentration in pea grains during their hydration were developed from a transient water mass balance, inside a grain of pea, considering a constant volume and spherical geometry. These models are represented by an ordinary first order differential equation and have the following parameters: the mass transfer coefficient (Ks) or mass transfer effective coefficient (K's) and the equilibrium concentration (PAeq). The parameters have been numerically fitted using as criterion, the minimization of the sum-of-squared residuals or for a simple one using the linear correlation. For the model validation experimental data was measured from hydration test where grain peas were immersed in Iiquid water at constant temperature (10, 20, 30, 40, 50 or 60c). Additionally these models had been compared between itself and with literature empirical models. There was not practically temperature's influence on the equilibrium concentration, while Ks e K's, with increase temperature, does not vary iike linear fit.A prática consistiu em deixar grãos de ervilha imersos em água a uma temperatura controlada (20ºC, 30ºC, 40ºC, 50ºC e 60ºC ) em um banho ermostático, ao longo do tempo foram retiradas alíquotas e medidas a sua umidade. A partir disso, os dados foram avaliados. Foram estimados erros inerentes ao processo, como a perda de sólidos na hidratação e valores de parâmetros imprescindíveis a este trabalho como a densidade do grão de ervilha e a concentração de equilíbrio. Após esta etapa, foram utilizados modelos empíricos para avaliar o comportamento da hidratação ao longo do tempo e em diversas temperaturas, os quais estimaram adequadamente o processo. Depois, foram desenvolvidos modelos de parâmetros concentrados obtidos a partir de um balanço de massa da água num grão de ervilha em egime transiente, considerando-se volume constante e geometria esférica. Estes modelos foram representados por equações diferenciais ordinária de primeira ordem que possui os seguintes parâmetros: o coeficiente de ransferência de massa (Ks) ou coeficiente efetivo de transferência de massa (K s) e a concentração de equilíbrio (Aeq). Os parâmetros foram ajustados numericamente tomando-se como critério a minimização da soma dos resíduos quadráticos ou por uma simples correlação linear. Estes modelos epresentaram adequadamente o processo de hidratação. O mesmo foi feito para os modelos de parâmetros concentrados, considerando a variação do volume ao longo de processo. Estes representaram os dados experimentais com melhor precisão. Por final, foram desenvolvidos dois modelos de parâmetros distribuídos, um dos modelos considerava a resistência da transferência de massa na superfície o outro a condição de equilíbrio. Ambos representaram adequadamente o processo. Foi avaliado qual das duas hipóteses representava melhor o processo.84
FIGURE 9 in Light and ultrastructural analysis of Myxobolus insignis (Myxozoa), infecting the Amazonian Fish Semaprochilodus insignis (Prochilodontidae)
No full textFIGURE 9. Semi-schematic drawing of a valvar view of the spore of Myxobolus insignis, a parasite of the freshwater fish Semaprochilodus insignis from Amazonian fauna showing the morphologic characters, such as the spore shape and size, two equal polar capsules with six oblique polar filament coils, and the binucleated sporoplasm with several sporoplasmosomes. The spore wall is surrounded by a thick layer of electron-dense anastomosed fine microfibrils.Published as part of Azevedo, Carlos, Clemente, Sérgio C. S., Casal, Graça, Matos, Patrícia, Oliveira, Elsa, Al-Guraishy, Saleh & Matos, Edilson, 2012, Light and ultrastructural analysis of Myxobolus insignis (Myxozoa), infecting the Amazonian Fish Semaprochilodus insignis (Prochilodontidae), pp. 51-56 in Zootaxa 3182 (1) on page 54, DOI: 10.11646/zootaxa.3182.1.5, http://zenodo.org/record/524797
Figure 3 in Morphological and Molecular Characteristics of Kudoa viseuensis n. sp. (Myxosporea: Multivalvulida), Found in the Muscle of Batrachoides surinamensis (Teleostei: Batrachoididae) in the Brazilian Amazon Region
No full textFigure 3. Schematic drawing of a spore of Kudoa viseuensis n. sp. in apical view (right) and side view (left). Scale bar = 5 μmPublished as part of Monteiro, Elideth Pacheco, Da Silva, Diehgo Tuloza, Sanches, Osimar, Hamoy, Igor & Matos, Edilson Rodrigues, 2019, Morphological and Molecular Characteristics of Kudoa viseuensis n. sp. (Myxosporea: Multivalvulida), Found in the Muscle of Batrachoides surinamensis (Teleostei: Batrachoididae) in the Brazilian Amazon Region, pp. 7-16 in Acta Protozoologica 58 (1) on page 12, DOI: 10.4467/16890027AP.19.002.10833, http://zenodo.org/record/835694
- …
