Listar Revistas Científicas y Artículos por fecha de publicación

Crabs infected with Paragonimus metacercariae from Condebamba Valley (Cajamarca).

Tantaleán-Vidaurre, M.V.; Huiza, A.F.; Delgado, E. (Universidad Nacional Mayor de San Marcos, Fac. Of Biological., 1974)

In Condebamba Valley (Cajamarca) between February and July 1973; 69 crabs Pseudothelphusa chilensis were collected, of them (34 males and 35 females) 22 (64.7%) males and 29 (28.85%) females were infected with metacercariae, ...

Three new species of Muhlenbergia and Uniola (Poaceae) from Northern Peru.

Laegaard, S.; Sánchez, I. (Elsevier Ltd., 1990)

Three new grass species, Muhlenbergia coxamarcensis, M. maxima and Uniola peruviana are described from Northern Peru. Their affinities and geographical distribution are briefly discussed.

Haematological parameters in Brown Swiss and Holstein cattle at high altitude.

Claxton, J.R.; Ortiz-Oblitas, P. (Springer Netherlands., 1996)

Standard haematological values have been calculated for female Holstein and Brown Swiss cattle kept at high altitudes in the Andean Sierra. Overall mean values were 5·9 × 1012 l−1 for the red cell count, 0·321l−1 for the ...

Fasciola infection in guinea-pigs in the Peruvian highlands.

Gamarra-Ramírez, R. (Springer Netherlands., 1996)

No abstract available.

The epidemiology of fasciolosis in the inter-Andean valley of Cajamarca, Peru.

Claxton, J.R.; Zambrano, H.; Ortiz-Oblitas, P.; Amorós, C.; Delgado, E.; Escurra, E.; Clarkson, M.J. (Elsevier Ireland Ltd., 1997)

Fasciolosis is recognised as a major problem in dairy cattle in parts of Peru. A longitudinal study of dairy cattle in Cajamarca, Peru was used to determine the annual pattern of infection with Fasciola hepatica. After a ...

Photoperiod, temperature, gibberellin, and an anti-gibberellin affect tuberization of potato stem segments in vitro.

Escalante-Zumaeta, B.S.; Langille, A.R. (American Society for Horticultural Science., 1998)

Katahdin' potato plants were grown under conditions that did not induce tuberization (noninducing conditions) and the foliage was sprayed with either a growth retardant (BAS-111) at 1000 mg·L ⁻¹ or distilled water. Other ...

Strategic control of fasciolosis in the inter-Andean valley of Cajamarca, Peru.

Claxton, J.R.; Zambrano, H.; Ortiz-Oblitas, P.; Delgado, E.; Escurra, E.; Clarkson, M.J. (British Veterinary Association., 1998)

Fasciolosis is recognised as a major problem in dairy cattle in Cajamarca, Peru. The infection has an annual cycle, with the major period of infection from January to March. A control programme, involving two doses of the ...

Weed communities in Andean cropping systems of Northern Peru.

Becker, B.; Terrones, F.; Horchler, P. (Elsevier Ltd., 1998)

Weeds can have both positive and negative effects on agricultural environments. However, despite the growing interest in the ecology of weed communities in agricultural areas, a few studies have been carried out in the ...

Characterisation of woody Medicago (sect. Dendrotelis) species, on the basis of seed and seedling morphometry.

González-Andrés, F.; Chávez, J.; Montáñez, G.; Ceresuela, J.-L. (Elsevier Ltd., 1999)

The three species belonging to the sect. Dendrotelis of the genus Medicago: M. arborea L., M. citrina (Font Quer) Greuter, and M. strasseri Greuter, Matthäs & Risse, were characterized using 12 morphometrical characters ...

The effect of cyclic temperatures on the growth of Fasciola hepatica and Lymnaea viatrix.

Claxton, J.R.; Sutherst, J.; Ortiz-Oblitas, P.; Clarkson, M.J. (Bailliere Tindall Ltd., 1999)

The experiment aimed to measure the effect of constant and variable temperatures on the growth of Lymnaea viatrix snails, on the development of a Peruvian isolate of Fasciola hepatica eggs and on the development of F. ...

Efecto de la suplementación con selenio sobre la actividad sanguínea de glutation peroxidasa (GSH-Px) y ganancia de peso en bovinos selenio deficientes mantenidos a pastoreo.

Oblitas, F.; Contreras, P.A.; Böhmwald, H.; Wittwer, F. (Elsevier Ltd., 2000)

An experiment was designed to study the effects of a selenium (Se) supplementation with sodium selenite on the blood activity of glutathione peroxidase (GSH-Px; EC 1.11.1.9) and live weight gain of selenium deficient grazing ...

Anemia e deficiência de ferro em gestantes adolescentes.

Fujimori, E.; Laurenti, D.; Núñez de Cassana, L.M.; De-Oliveira, I.M.V.; Szarfarc, S.C. (Revista de Nutricao revistas., 2000)

Por meio de dosagem de ferritina sérica, transferrina sérica, hemoglobina e hematócrito, caracterizou-se o estado nutricional de ferro de 79 gestantes adolescentes de primeira consulta pré-natal (<FONT FACE=Symbol>£ </FONT>20 ...

The specificity of antibody responses in cattle naturally exposed to Fasciola hepatica.

Ortiz-Oblitas, P.; Claxton, J.R.; Clarkson, M.J.; McGarry, J.W.; Williams, D.J.L. (Elsevier Ltd., 2000)

Fasciola hepatica causes significant morbidity and mortality in dairy cattle in the Andean region of Cajamarca, Peru, where prevalence of infection of up to 78% has been reported. ELISA and Western blot analyses were used ...

Gender, rural households, and biodiversity in native Mexico.

Cabrera, I.R.; Zapata-Martelo, E.Z.; Vázquez-García, V.V. (Springer Netherlands., 2001)

Knowledge about maize varieties is the key to rural households' survival in native Mexico. Native peoples relate to nature in particular ways and they play a crucial role in maintaining biodiversity. This paper discusses ...

Development of an antibody-detection ELISA for Fasciola hepatica and its evaluation against a commercially available test.

Salimi-Bejestani, M.R.; McGarry, J.W.; Felstead, S.; Ortiz-Oblitas, P.; Akça, A.; Williams, D.J.L. (Elsevier Ltd., 2005)

An ELISA was developed for the detection of Fasciola hepatica antibody in serum of cattle. The assay was applied to sera from 258 naturally infected cattle, 256 non-infected cattle and six calves experimentally infected ...