Manuel A Carrillo - Academia.edu (original) (raw)

Papers by Manuel A Carrillo

The photoperiod entrainment of reproduction in fish is highly divergent with species entraining t... more The photoperiod entrainment of reproduction in fish is highly divergent with species entraining to signals that are most relevant to their surrounding environment. Intensive aquaculture is increasingly reliant on artificial photoperiod manipulation to regulate reproduction. This work thus aimed to better characterise the diversity of circadian organisations and light sensitivities among teleost species. The demonstration of the use of retinas for non visual light perception in tilapia and to a lesser extent cod and sea bass has implications for the definition of the neuroendocrine system used to entrain sexual maturation. These results have significant implications for the design of culture systems to manage reproduction during commercial on-growing, requiring species specific lighting systems to be designed.

Palabras clave: Curvas de absorción; nitrógeno; eficiencia de recuperación; fertilización; increm... more Palabras clave: Curvas de absorción; nitrógeno; eficiencia de recuperación; fertilización; incremento de absorción. ABSTRACT Macronutrient absorption and N uptake efficiency, in maize promising hybrid. Patricia Pilar, Ecuador. When new genetic materials are released to the market, it is necessary to study their nutrient requirements, the dynamics of nutrient absorption and evaluate their profitability; thus, the objective of this research was to determine the efficiency of nitrogen fertilization and the variation in macronutrient uptake due to 4 doses of nitrogen in a promising maize hybrid, during the dry season, in Patricia Pilar, in the province of Los Ríos, Ecuador. Nitrogen doses of 0, 66, 132 and 198 kg.ha-1 were studied in a randomized complete block design with 4 replicates and the means separated by Tukey's test (p<0.05). Plants were sampled every 15 days in order to evaluate total dry matter (DM) production and nutrient concentration. N recovery efficiency was evalu...

This work analyzes the plasma level variations of luteinizing hormone (LH) during the reproductiv... more This work analyzes the plasma level variations of luteinizing hormone (LH) during the reproductive cycle and the percentage of spermiating European sea bass...

Tsafiqui - Revista Científica en Ciencias Sociales

En la finca “El Oasis”, propiedad de la Universidad Tecnológica Equinoccial, ubicada en la vía a ... more En la finca “El Oasis”, propiedad de la Universidad Tecnológica Equinoccial, ubicada en la vía a San Jacinto del Búa, en Santo Domingo de los Tsáchilas, se realizó el estudio que evaluó los efectos de la interacción de densidades de siembra de plantas de maíz con aplicaciones de citocininas y activador metabólico, con el objetivo de conseguir plantas doble propósito (cosechar choclitos y grano de maíz en la misma planta) durante le época seca del 2007 y la interacción de la fertilización con nitrógeno y fósforo sobre la producción de choclitos y maíz independientemente en la época lluviosa del 2008. Se utilizó un diseño de bloques completos al azar bajo parcelas subdivididas, para la época seca y divididas en la época lluviosa, los promedios fueron comparados usando la prueba de Tukey al 95% de probabilidad. Las variables evaluadas fueron días a floración y cosecha, diámetro de tallo, prolificidad y esterilidad de las plantas, rendimiento y se practicó un análisis económico. Como re...

This product is part of the RAND Corporation research brief series. RAND research briefs present ... more This product is part of the RAND Corporation research brief series. RAND research briefs present policy-oriented summaries of individual published, peer-reviewed documents or of a body of published work.

Indian Journal of Science and Technology

Agronomía Costarricense, Nov 14, 2017

Macronutrient absorption and N uptake efficiency, in maize promising hybrid. Patricia Pilar, Ecua... more Macronutrient absorption and N uptake efficiency, in maize promising hybrid. Patricia Pilar, Ecuador. When new genetic materials are released to the market, it is necessary to study their nutrient requirements, the dynamics of nutrient absorption and evaluate their profitability; thus, the objective of this research was to determine the efficiency of nitrogen fertilization and the variation in macronutrient uptake due to 4 doses of nitrogen in a promising maize hybrid, during the dry season, in Patricia Pilar, in the province of Los Ríos, Ecuador. Nitrogen doses of 0, 66, 132 and 198 kg.ha-1 were studied in a randomized complete block design with 4 replicates and the means separated by Tukey's test (p<0.05). Plants were sampled every 15 days in order to evaluate total dry matter (DM) production and nutrient concentration. N recovery efficiency was evaluated at 110 days (physiological maturity) and grain yield at 120 days. Results showed that for the promissory maize hybrid, application of 132 kg of N.ha-1 increased uptake of N, P, K, Mg and S; but not Ca. The rate of absorption varied according

Revista Mexicana de Ciencias Agrícolas, Mar 6, 2018

La efectividad de los hongos micorrízicos arbusculares en cultivos bajo agricultura protegida es ... more La efectividad de los hongos micorrízicos arbusculares en cultivos bajo agricultura protegida es poco conocida. El objetivo del estudio fue conocer la respuesta de tomate (cv. 'El Cid') a la inoculación micorrízica en una estructura casasombra. Las plántulas se trasplantaron en suelo, inoculadas o no con Rhizophagus intraradices. Las plantas inoculadas incrementaron significativamente el contenido de clorofila, altura de planta y la colonización micorrízica, comparado con plantas no inoculadas. Igualmente, se observaron incrementos significativos en el largo, diámetro y peso de fruto, además, aumentó el rendimiento de fruto por corte y el rendimiento acumulado en 30%. El efecto benéfico de R. intraradices como promotor del rendimiento de tomate en agricultura protegida puede representar un manejo eficiente de producción. Palabras clave: colonización micorrízica, características de fruto, rendimiento. En México existen alrededor de 20 000 ha bajo agricultura protegida (AP) de las cuales aproximadamente 12 000 ha son de invernadero y las otras 8 mil ha corresponden a casas sombra y macro túnel principalmente (SAGARPA, 2012). Sin embargo, independientemente del nivel tecnológico de la AP, son múltiples los factores que originados de las

Revista Mexicana de Ciencias Agrícolas

La actividad simbiótica que presentan los hongos formadores de micorrizas puede constituir un co... more La actividad simbiótica que presentan los hongos formadores de micorrizas puede constituir un componente biotecnológico importante para el incremento de la productividad hortícola. Dentro de los beneficios que aporta la simbiosis HMA-planta hospedante, se encuentra la promoción del crecimiento y mayor nutrición mineral de la planta. La producción hortícola en invernadero ha tenido una creciente expansión en México, debido a que tiene ventajas no solo en las demandas de los consumidores, sino por la alta productividad generada. No obstante, son múltiples los factores que procedidos de diferentes prácticas agronómicas del cultivo se manifiestan en la calidad de la producción. Por lo que se evaluó la nutrición y la calidad de fruto de pimiento (cv. ‘Valeria’), por efecto de la inoculación con el hongo micorrízico arbuscular (HMA) Rhizofagus intraradices, en invernadero. El cultivo fue manejado con sistema de fertiriego y la inoculación del HMA fue en el trasplante. La...

The RAND Corporation is a nonprofit research organization providing objective analysis and effect... more The RAND Corporation is a nonprofit research organization providing objective analysis and effective solutions that address the challenges facing the public and private sectors around the world. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors. R ® is a registered trademark.

Cirugía y Cirujanos (English Edition)

Background: Intravenous fluid therapy is essential in the management of hospitalized patients, es... more Background: Intravenous fluid therapy is essential in the management of hospitalized patients, especially in those with acute or critical illness. It has been proposed four premises, four indications, four questions, and four phases for guidance of this fluid therapy. Objective: The objective of this manuscript is to review these new concepts of intravenous fluid therapy. Conclusion: These phases of intravenous fluid resuscitation coexist continuously and with a variability observed on fluid balance, is meant as a dynamic process, not as a temporary fixed pattern or a time scale and which must be individualized to the clinical context of patient.

Ciencias Marinas

La lubina europea (Dicentrarchus labrax L.) es una de las especies más importantes en la acuicult... more La lubina europea (Dicentrarchus labrax L.) es una de las especies más importantes en la acuicultura europea y también una especie modelo en el estudio de la endocrinología de peces. La lubina se reproduce espontáneamente en cautiverio, pero su reproducción todavía presenta serios problemas, tales como la desincronización de los reproductores y la reducida

PeerJ, 2017

The True's beaked whale (Mesoplodon mirus, True 1913) is a poorly known member of the Ziphiid... more The True's beaked whale (Mesoplodon mirus, True 1913) is a poorly known member of the Ziphiidae family. Its distribution in the northern hemisphere is thought to be restricted to the temperate or warm temperate waters of the North Atlantic, while a few stranding records from the southern hemisphere suggest a wider and antitropical distribution, extending to waters from the Atlantic coast of Brazil to South Africa, Mozambique, Australia and the Tasman Sea coast of New Zealand. This paper (i) reports the first molecular confirmation of the occurrence of the True's beaked whale at the southern limit of its distribution recorded in the northeast Atlantic: the Azores and Canary Islands (macaronesian ecoregion); (ii) describes a new colouration for this species using evidence from a whale with molecular species confirmation; and (iii) contributes to the sparse worldwide database of live sightings, including the first underwater video recording of this species and close images of a...

Acta Gastroenterol Latinoam, Jun 1, 2006

Ponencia presentada en el XIII Congreso Nacional de Acuicultura celebrado en Barcelona del 21 al ... more Ponencia presentada en el XIII Congreso Nacional de Acuicultura celebrado en Barcelona del 21 al 24 de noviembre de 2011

Abstract : The Department of Defense in recent years has shifted from a focus on sizing and shapi... more Abstract : The Department of Defense in recent years has shifted from a focus on sizing and shaping its forces to meet specific war plans to policies based on capabilities that can be directed toward a spectrum of missions. Concurrently, the Air Force has developed new policies governing deployments. Under these policies, Air Force personnel and materiel are organized into Air and Space Expeditionary Forces (AEFs). The AEF policies specify which personnel are expected to deploy if they are needed at some time, how long those personnel will remain deployed, and when they will be expected to deploy again. This shift to capabilities-based planning and AEF deployments has dramatically changed the manner in which the Air Force organizes and deploys its forces. Given these changes, the need has arisen for new methods to assess Air Force deployment capabilities. This monograph describes a method for assessing deployment capabilities in light of the new AEF policies. This analytical approach can be used to evaluate a range of policy issues, which are described here, including expressing the deployment capabilities of the Air Force in terms of AEF policies, comparing alternative AEF policies with the current set of policies, sizing and balancing manpower positions among the combat support functional areas to meet specific deployment scenarios, and examining the impact of basing structures on the burden of deployment for Air Force personnel in certain support positions. Research for this report was completed in October 2004.

Cercles Revista D Historia Cultural, 2003