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The contents of Cd, Cu, Pb and Zn of the white shrimp Litopenaeus vannamei (Boone, 1931) of six coastal lagoons of Sinaloa, NW Mexico
Frías-Espericueta,Martín G; Osuna-López,Isidro; Voltolina,Domenico; Beltrán-Velarde,Marco A; Izaguirre-Fierro,Gildardo; López-López,Gabriel; Muy-Rangel,Maria D; Rubio-Carrasco,Werner;
Revista de biología marina y oceanografía , 2009, DOI: 10.4067/S0718-19572009000100020
Abstract: abstract litopenaeus vannamei is the most important shrimp species in the traditional fishery of the coastal lagoons of the state of sinaloa (nw mexico), and most of the landings are consumed locally. since these lagoons receive important volumes of agricultural, industrial and urban effluents, consumption of this shrimp could pose risks to human health. the mean content of cd, cu, pb and zn determined in the hepatopancreas of shrimp from commercial landings from six lagoons of sinaloa were higher than those of the muscle. there was a weak correlation between the zn content of the two tissues (p≤0.05) and the correlations were not significant for cd, cu and pb (p>0.1). the concentrations found in the shrimp muscle were comparable or lower than those determined in commercial landings of different crustaceans from other geographic areas. according to our results the consumption of local shrimp poses no risks to human health.
Feeding of blue marlin Makaira nigricans off Mazatlan, Sinaloa, Mexico
Abitia-Cárdenas,Leonardo; Arizmendi-Rodríguez,Dana; Gudi?o-González,Napoleón; Galván-Maga?a,Felipe;
Latin american journal of aquatic research , 2010,
Abstract: we analyzed the stomach contents of 52 blue marlins caught between october 2002 and october 2004 by the sport-fishing fleet of mazatlan, sinaloa, in the gulf of california, mexico. blue marlin feed on 15 food items. according to the index of relative importance (iri), the most important prey were the frigate or bullet mackerel auxis spp. (52%) and jumbo squid dosidicus gigas (30%).
Frequency and Clinical Epidemiology of Canine Monocytic Ehrlichiosis in Dogs Infested with Ticks from Sinaloa, Mexico  [PDF]
Carolina Guadalupe Sosa-Gutierrez,Maria Teresa Quintero Martinez,Soila Maribel Gaxiola Camacho,Silvia Cota Guajardo,Maria D. Esteve-Gassent,María-Guadalupe Gordillo-Pérez
Journal of Veterinary Medicine , 2013, DOI: 10.1155/2013/797019
Abstract: Ehrlichia canis is a rickettsial intracellular obligate bacterial pathogen and agent of canine monocytic ehrlichiosis. The prevalence of this disease in veterinary medicine can vary depending on the diagnostic method used and the geographic location. One hundred and fifty-two canine blood samples from six veterinary clinics and two shelters from Sinaloa State (Mexico) were analyzed in this study. All animals were suspected of having Canine Monocytic Ehrlichiosis (CME). The diagnostic methods used were the ELISA (Snap4Dx, IDEXX) together with blood smear and platelet count. From all dogs blood samples analyzed, 74.3% were positive to E. canis by ELISA and 40.1% were positive by blood smear. The sensitivity and specificity observed in the ELISA test were 78.8% and 86.7%. In addition, thrombocytopenia was presented in 87.6% of positive dogs. The predominant clinical manifestations observed were fever, anorexia, depression, lethargy, and petechiae. Consequently, this is the first report in which the morulae were visualized in the blood samples, and E. canis-specific antibodies were detected in dogs from Sinaloa, Northwest of Mexico. 1. Introduction Ehrlichia canis is the causative agent of canine monocytic ehrlichiosis (CME). Moreover, CME is an emerging disease in veterinary medicine, and E. canis has been considered in the last decade as a potential zoonotic pathogen [1, 2]. It is a worldwide disease transmitted by a tick bite. The competent vector for its transmission is the Ixodidae ticks Rhipicephalus sanguineus and Dermacentor variabilis [3]. In dogs, the CME is a multiphase disorder that progresses in three stages: acute, subclinical, and chronic. Each phase is characterized by several clinical and hematologic abnormalities. Thrombocytopenia is a common finding in E. canis infected dogs and many clinicians tend to use it as an indication for antibiotic treatment, and it is observed in 84% of the cases and its severity varies in the different disease phases [4]. During the subclinical stage a moderate thrombocytopenia is observed, while the chronic phase is characterized by severe leukopenia and anemia. In this stage dogs show other complications such as hypocellular marrow, suppressed splenic sequestration, decreased life of platelets, and an increase of circulating migration-factor platelet inhibitor [3, 4]. The relationship between the magnitude of thrombocytopenia and prevalence of E. canis has been established in countries such as Brazil in 2004 where 84.1% of infected dogs showed thrombocytopenia [3]. Taken together, more data is necessary to
The Structural Geographic Components of a Territorial Survey
Romanian Review of Regional Studies , 2006,
Abstract: When using regional geographic approaches, i.e. when applying its concepts to the problems of anthropic communities from a certain territory, is compulsory. In this study we have taken into account the complex and the etymologically adequate meaning of the notion and not the meaning most commonly used at present (i.e. the functional zoning and regionalisation of the territory). Relying on the estimations of territorial surveys, one may give the solutions for the extant malfunctions and for optimising future developments. The geographic components of this parameter (the territorial survey) are: the natural support basis, the population and its settlements, the social and economic development level, the technical equipment of the territory, and the extant risks and malfunctions. Indices from 1 to 10 will be summed in order to give us the big picture, namely the present-day situation and the favourability level of that territory for various anthropic interventions.
Nuevos registros de macroalgas marinas para el estado de Sinaloa, México
Aguilar Rosas, Raúl;Ochoa Izaguire, Ma. Julia;Aguilar Rosas, Luis E.;Tovalín Hernández, Omar A.;Páez Osuna, Federico;
Polibotánica , 2009,
Abstract: ishige sinicola (setchell et gardner) chihara, rosenvingea antillarum (p.l. crouan et h.m. crouan) m.j. wynne, sargassum sinicola setchell et gardner, scinaia johnstoniae setchell, gracilaria turgida dawson and lithophyllum margaritae (hariot) heydrich at the coast of sinaloa, mexico were recorded for the first time. each species is presented with data regardin their morphology, reproductive status, habitat and geographic distribution.
Infection status of the estuarine turtles Kinosternon integrum and Trachemys scripta with Gnathostoma binucleatum in Sinaloa, Mexico
Díaz-Camacho, Sylvia Páz;de la Cruz-Otero, María del Carmen;Torres-Montoya, Edith Hilario;Sánchez-Gonzales, Sergio;Delgado-Vargas, Francisco;Nawa, Yukifumi;
Revista mexicana de biodiversidad , 2010,
Abstract: human gnathostomosis, a serious public health issue in mexico, is endemic to sinaloa. the disease is mainly caused by consumption of the raw meat of freshwater or estuarine fishes infected with the advanced third stage larvae (al3) of gnathostoma binucleatum. in the present study, we examined estuarine turtles with a sample consisting of 23 trachemys scripta and 5 kinosternon integrum from sinaloa, mexico for the presence of gnathostoma larvae; such examination was made by the pressing method of skeletal muscles between 2 glass plates. the results showed that both turtles harbored g. binucleatum al3; identification was achieved by morphology and also by pcr/sequencing of the its2 region of ribosomal dna of the larvae. infection prevalence was higher for k. integrum (80%) than for t. scripta (69.6%), but heavy infection (> 10 al3/turtle) was observed in the larger sized individuals of t. scripta. consumption of the raw meat of these turtles represents a risk to acquire the disease.
Feeding of blue marlin Makaira nigricans off Mazatlan, Sinaloa, Mexico Alimentación del marlin azul Makaira nigricans del área de Mazatlán, Sinaloa, México  [cached]
Leonardo Abitia-Cárdenas,Dana Arizmendi-Rodríguez,Napoleón Gudi?o-González,Felipe Galván-Maga?a
Latin american journal of aquatic research , 2010,
Abstract: We analyzed the stomach contents of 52 blue marlins caught between October 2002 and October 2004 by the sport-fishing fleet of Mazatlan, Sinaloa, in the gulf of California, Mexico. Blue marlin feed on 15 food items. According to the index of relative importance (IRI), the most important prey were the frigate or bullet mackerel Auxis spp. (52%) and jumbo squid Dosidicus gigas (30%). Se analiza el contenido estomacal de 52 marlines azules capturados por la flota de pesca deportiva que operó en el área de Mazatlan, Sinaloa, en el golfo de California, México, durante el periodo octubre 2002 a octubre 2004. El marlin azul se alimenta de 15 categorías alimenticias (ítemes), de las cuales las más importantes de acuerdo al índice de importancia relativa (IRI), fueron el pez melva Auxis spp. (52%) y el calamar gigante Dosidicus gigas (30%).
Comportamiento de la temperatura y el oxígeno disuelto en la presa Picachos, Sinaloa, México Temperate and dissolved oxygen of the Picachos reservoir, Sinaloa, Mexico  [cached]
Rigoberto Beltrán-álvarez,Juan Pedro Ramírez-Lozano,Jesús Sánchez-Palacios
Hidrobiológica , 2012,
Abstract: La presa Picachos se localiza en la región sur de Sinaloa, México, se terminó de construir en 2009 sobre el cauce del río Presidio, a una altura de 75 msnm, e inició su llenado en julio del mismo a o. Entre septiembre de 2009 y agosto de 2010 se registraron, con frecuencia mensual en tres sitios del embalse y en toda la columna de agua, datos de temperatura del agua y oxígeno disuelto. El embalse registró una mezcla completa entre los meses de diciembre a febrero, y una estratificación térmica el resto del a o. La variación de la temperatura del agua indicó que este cuerpo de agua se comporta como un lago cálido monomíctico. La anóxia del hipolimnio coincidió con el periodo de estratificación térmica. The Picachos reservoir was completed in 2009 impounding the Presidio river, in the southern part of the state of Sinaloa, Mexico, and is located at a height of 75 m above msnmm. He began filling in July of the same year. A limnological study performed with monthly visits to the reservoir between September 2009 and August 2010 showed that it behaves like a warm monomíctic lake, with complete mixing between December and February and thermal stratification during the rest of the year, and with an anoxic hipolimnion during thermal stratification.
Change Analysis of Land Use and Urban Growth in the Municipalities of Culiacan and Navolato, Sinaloa, Mexico Using Statistical Techniques and GIS  [PDF]
Geovanna Gpe Hinojoza Castro, Wenseslao Plata Rocha
Journal of Geographic Information System (JGIS) , 2015, DOI: 10.4236/jgis.2015.76050
Abstract: Previous analysis of land use and land cover changes help us to understand the range, importance and effects that this dynamic has in the environment and its relation with the human’s activities. This work consists in analyzing the land use/cover for the Municipalities of Culiacan and Navolato, Mexico, through statistical techniques and Geographic Information Systems. The methodology is allowed to determine the changes, gains, losses and transitions in the different categories in the period studied. The results show significant changes in the denominate categories, agriculture and forest. However, the greatest change is the increase of the urban areas. The knowledge in the studied area and its dynamics are carried out and this work serves as a reference to study, manage and plan for our territory.
Determination of hydraulic conductivity and fines content in soils near an unlined irrigation canal in Guasave, Sinaloa, Mexico
Delgado-Rodríguez,O; Peinado-Guevara,H. J; Green-Ruíz,C. R; Herrera-Barrientos,J; Shevnin,V;
Journal of soil science and plant nutrition , 2011, DOI: 10.4067/S0718-95162011000300002
Abstract: the determination of hydraulic conductivity is essential for the assessment of fluid migration rates in the subsurface. geoelectric methods are often used in hydrogeological studies as quick and inexpensive tools. the relation between saturated soil hydraulic conductivity (k), clay content and soil resistivity allows an estimation of clay content and k from electrical measurements made in the field or laboratory. in this work, a methodology for estimating fines (silt+clay) content and k from electrical measurements in silt-loam soils is presented. a textural analysis was performed in 73 soil samples collected from 21 boreholes located in the municipality of guasave, sinaloa, mexico, to determine the sections with a greater infiltration of water from the valle del fuerte irrigation canal to the local aquifer. the calculated values of texture and k were used to develop a new empirical equation, k = 0.101176 * fines-1.62, which achieved a new relation to properly estimate the k values from the percentage of fines content. electrical measurements were performed in the laboratory for each soil sample to determine the fines content. the k values, which were determined by a new empirical equation, showed an acceptable correlation with the values obtained by traditional techniques for silt and silt loam soils with a clay content < 35%. water resistivity measurements were performed for samples collected from wells and flumes, showing that the water salinity of the canal is significantly lower than the groundwater. due to the location of the valle del fuerte canal and soil k values, the water infiltrated from the flume into the subsoil creates a barrier preventing or slowing down the advance of the saltwater intrusion from the sea of cortez. short electrical resistivity tomography (ert) profiles were carried out to determine the surface stratigraphy. the results achieved by the application of ert and the groundwater salinity values allowed the recalculation of the geoelectric
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