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A MULTIVARIATE ANALYSIS OF Boophilus microplus (ACARI: IXODIDAE): NON-PARASITIC PHASE Rev Salud Anim.
de la Vega,R; Díaz,G; da Fonseca,A.H.
Multivariate statistical methods are relatively new tools for data analysis. They have a lot of applications in biological researches: nevertheless, for several reasons, they have not been widely employed in this subject yet. Recently, present authors published a paper applying multivariate statistics on non-parasitic phase of Anocentor nitens. In the present article Boophilus microplus has received a very similar statistic treatment. In this paper, the influence of different incubation conditions was studied in groups of 12-15 individuals in each of the 24 combinations of six temperatures 24, 27, 30, 32, 34 and 36ºC and four relative humidity values, 100, 80, 75.5 and 70% over the cycle variables of B. microplus. According to the results, the best...
Tipo: Journal article Palavras-chave: Ticks; Ixodidae; Boophilus microplus; Multivariate Analysis; Non-parasitic phase.
Ano: 2010 URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2010000200004
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A MULTIVATIATE ANALYSIS OF Anocentor nitens (IXODOIDEA: IXODIDAE): NON-PARASITIC PHASE/[title] [title language=es]ANÁLISIS MULTIVARIADO DE Anocentor nitens (IXODOIDEA: IXODIDAE): FASE NO PARASITARIA Rev Salud Anim.
de la Vega,R; Díaz,G.
Multivariate statistical methods are useful tools complementary to classic univariate methods. In biology, they are used in several scenarios where data structure, classification and grouping are necessary. Nevertheless, it seems they have not been employed in the study of non-parasitic phase of ticks or any other arthropod. In this paper, the influence of different incubation conditions was studied in groups of 12-15 individuals in each of the 24 combinations of six temperatures 24, 26, 28, 30, 32, and 34ºC and four relative humidities 100, 80, 75.5 and 70% over the cycle variables of Anocentor nitens looking for establishing the most suitable environmental conditions to increase or decrease ticks performance and to apply these knowledges to zoogeography....
Tipo: Journal article Palavras-chave: Ticks; Ixodidae; Multivariate Analysis; Non-parasitic phase.
Ano: 2008 URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2008000200002
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ANATOMY AND HISTOLOGY OF THE FEMALE REPRODUCTIVE SYSTEM OF Boophilus microplus (ACARI: IXODIDAE) Rev Salud Anim.
de la Vega,R; Díaz,G; Galán,M; Fernández,C.
The knowledge of the anatomy and histology of the female genital system in ticks is very important as a basic tool in all species in relation to morphological sciences and evolution, physiological events like ovulation, sexual behavior, maturation and mating, and also to research the interrelation tick-hemoparasite. The anatomy and histology of the female genital system in Boophilus microplus are scarcely studied. In the present paper, the female genital system of this tick has been considered as a whole and morphological and functional interrelations between different structures and also some other related items has been presented. Unfed and partially engorged females were employed in the study. The quality and resolution of images are remarkable because...
Tipo: Journal article Palavras-chave: Ticks; Ixodidae; Boophilus microplus; Anatomy and histology; Female genital system.
Ano: 2012 URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2012000100001
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APPLICATION OF TICK SAMPLING ON ACARICIDAL BATH FREQUENCY IN Rhipicephalus (Boophilus) microplus (ACARI: IXODIDAE) Rev Salud Anim.
de la Vega,R; Díaz,G; Camejo,A; García,I.
In this paper, a tick sampling method developed by authors was employed with the purpose of saving acaricides and decreasing environmental pollution by the use of acaricidal dip control bathing bovines in relation to a critical number of estimated ticks. Twenty-six Jersey cows in production were sampled. The selected sampling regions were: rear leg, udder, perinea and tail. Samplings were done from 7 to 8 am, and female tick standard size pattern was 6 mm or longer. Every two weeks approximately, samplings and acaricidal baths were done (13 samplings in total). Only cows with 10 or more ticks received acaricidal baths. Results showed that the procedure allows saving 50% of acaricides.
Tipo: Journal article Palavras-chave: Rhipicephalus (Boophilus) microplus; Tick; Acaricide; Sampling.
Ano: 2009 URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2009000200005
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La cobertura del cultivo como indicador de la productividad de maíz en un lote con siembra variable Agriscientia (Córdoba)
de la Casa,A; Ovando,G; Bressanini,L; Martínez,J; Miranda,C; Díaz,G.
La variabilidad del rendimiento de un lote se puede monitorear por diversos medios remotos. El objetivo del trabajo fue determinar la cobertura del cultivo (CC) de maíz (Zea mays L.) a partir de datos de NDVI, para evaluar las diferencias productivas en un lote de 45 ha bajo riego ubicado al sur de la ciudad de Córdoba, Argentina, durante el ciclo 2013-2014. En el lote se establecieron seis sectores de muestreo donde periódicamente fueron adquiridas fotografías con una cámara digital que produce datos de NDVI. A los efectos de determinar CC, las imágenes de NDVI se clasificaron aplicando distintos umbrales para discriminar entre píxeles con vegetación y suelo. Cualquiera de los umbrales utilizados permitió establecer diferencias de CC entre sectores que se...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultura de precisión; NDVI; Biomasa; Agua del suelo.
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2017000100001
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NIVELES DE AFLATOXINA M1 EN QUESOS FRESCOS PRODUCIDOS EN DIFERENTES ZONAS DE MÉXICO Rev Salud Anim.
Urbán,G; Pérez,J; Martínez,F; Salas,J; Díaz,G; Ramírez,M.L; Castro,G; Vega,S; Gutiérrez,R; Escobar,A.
El objetivo de este estudio fue evaluar el contenido de aflatoxina M1 (AFM1) en quesos frescos tipo panela producidos en varias zonas de México. Las muestras se tomaron durante el periodo de agosto del 2007 a abril del 2008 en supermercados de la ciudad de México, donde se ofertan quesos provenientes de diversas industrias y zonas de México. Las muestras se procesaron y aalizaron por cromatografía de líquidos de alta resolución (HPLC) bajo las directrices de métodos propuestos por la AOAC. Los resultados evidenciaron que todas las industrias queseras presentaron incidencia de AFM1. El 27 % de las muestras positivas estuvieron por encima del nivel de tolerancia establecido por algunos países (0.25 µg/Kg) como Austria, Honduras, Suiza y Turquía.
Tipo: Journal article Palavras-chave: Aflatoxina M1; Queso; México.
Ano: 2009 URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2009000200007
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OCURRENCIA DE AFLATOXINA M1 EN LECHES CRUDA, ULTRAPASTEURIZADA Y ORGÁNICA PRODUCIDAS Y COMERCIALIZADAS EN EL ALTIPLANO MEXICANO Rev Salud Anim.
Pérez,J; Gutiérrez,R; Vega,S; Díaz,G; Urbán,G; Coronado,M; Escobar,A.
Muestras de leche procedentes del Altiplano Mexicano (9 cruda, 20 ultrapasteurizada y 15 orgánica) fueron analizadas para determinar la presencia de aflatoxina M1 empleando columna de extracción de fase sólida (C18), prederivatización con ácido trifluoracético y cromatografía líquida acoplada a un detector fluorescente. Los resultados mostraron que el 59% de las muestras presentaron niveles de aflatoxina M1 y todos los casos se encontraron por encima del límite máximo de residuo de 0.05 µg/Kg propuesto por la Unión Europea. Las medianas de aflatoxina M1 encontradas en muestras de leche cruda, ultrapasteurizada y orgánica fueron 16.21; 16.1 y 23.1 µg/Kg respectivamente. El porcentaje de muestras por encima del límite máximo de residuo fue menor en leche de...
Tipo: Journal article Palavras-chave: Aflatoxina M; Leche orgánica; México.
Ano: 2008 URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2008000200006
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WEIGHT DIFFERENCES BETWEEN Boophilus microplus (IXODOIDEA: IXODIDAE) FROM BRAZIL AND FROM CUBA Rev Salud Anim.
de la Vega,R; Díaz,G; Camejo,A; Fonseca,A.H; Passos Rangel,C.
Weights of engorged females and recently molted adults Boophilus microplus (both females and males) from Cuba and Brazil were compared by means of t-Student tests. It was observed that Brazilian ticks were always significantly heavier than those from Cuba. Some comments about the possible causes, significance of observation and further researches to be performed are offered.
Tipo: Journal article Palavras-chave: Garrapatas; Peso; Boophilus; Ixodoidea; Ixodidae.
Ano: 2007 URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2007000100006
Registros recuperados: 8
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