Recomendaciones para el mantenimiento de equipos en el Laboratorio de Andrología y Embriología. Segunda parte. Equipos auxiliares / Recommendations for the maintenance of equipment in the Andrology and Embryology Laboratory. Second part. Auxiliary equipment

Segundo de la serie de la Comisión de Andrología y Técnicas de Reproducción Asistida elaborada para facilitar el correcto mantenimiento, control y ajuste de los equipos que se utilizan en el Laboratorio de Andrología y Embriología. Se centra en los equipos auxiliares que dan soporte a los diferentes procesos de reproducción asistida. Incluye un programa de control para equipos de seguimiento y medición con frecuencias de revisión y criterios de aceptación

The second in the series of the Committee of Andrology and Techniques of Assisted Reproduction Committee, is prepared in order to carry out the correct maintenance, control and adjustment of the equipment used in the Andrology and Embryology laboratory. It focuses on the auxiliary equipment that supports the different processes of assisted reproduction. It includes a control program for monitoring and measuring equipment with revision frequencies and acceptance criteria

Recomendaciones en el proceso preanalítico del análisis de semen II. Recomendación 2016 / Recommendations on the pre-analytical process of semen analysis II. Recommendation 2016

Las condiciones de obtención y transporte de las muestras tienen influencia en los resultados del análisis de semen en el laboratorio. El diseño y la implementación de un protocolo adecuado para la fase preanalítica es necesario para generar resultados fiables. Este documento trata de proporcionar una serie de recomendaciones en la información que debe ser incluida en las instrucciones a los pacientes. También caracteriza variables y factores de confusión, como el periodo de abstinencia, el lugar de obtención de la muestra, etc. en un listado de verificación

Collection and transport of semen samples can have an influence on the laboratory analysis results. The design and implementation of a protocol suitable for the pre-analytical phase is required in order to offer accurate results. This document is intended to provide a series of recommendations on the information that should be included in the instructions to the patients. Furthermore, it mentions pre-analytical confounders, such as the period of sexual abstinence, the location where the semen sample was obtain, as well as explanatory variables, included in a sample reception checklist

Evaluation of colour temperatures in the cultivation of Dunaliella salina and Nannochloropsis oculata in the production of lipids and carbohydrates.

The production of biofuels from microalgae is a promising and sustainable alternative. Its production is determined by the content of lipids and carbohydrates, which is different for each microalgae species and is affected by environmental factors, being lighting one of the principal determining their biochemical composition. The colour temperature (electromagnetic radiation and light spectrum) is a determining factor for the production of lipids and carbohydrates in microalgae. The aim of this assay was to evaluate the effect of three colour temperatures (6500, 10,000 and 20,000 °K) on the biomass (cel mL-1), biomass production and productivity (g L-1 and g L-1 day-1), lipid and carbohydrate content (%), lipid and carbohydrate production and productivity (mg L-1 and mg L-1 day-1), composition and content of fatty acids (%) in two microalgae species: Dunaliella salina and Nannochloropsis oculata. The highest cell density was observed for N. oculata in stationary phase in the control (83.93 × 106 cel mL-1). However, higher lipid content was obtained in D. salina in stationary phase at 10,000 °K (80%), while N. oculata showed 67% at 6500 °K. The highest carbohydrate content was 25% in stationary phase for D. salina at 20,000 °K. Regarding the production of lipids, D. salina reached a maximum of 523 mg L-1 in exponential phase at 6500 and 10,000 °K. The highest carbohydrate production was 38 mg L-1 for D. salina in exponential phase at 20,000 °K. In both microalgae, 15 different fatty acids were identified; the most abundant was palmitic acid with 35.8% for N. oculata in stationary phase at 10,000 °K, while D. salina showed 67% of polyunsaturated fatty acids in exponential phase at 6500 °K. In conclusion, the ideal colour temperature for microalgae culture to obtain biofuels should be based on the biomolecule of interest, being necessary to individually evaluate for each species.

Complementary description of Ergasilus arthrosis Roberts, 1969 (Copepoda: Poecilostomatoida: Ergasilidae), a new parasite of cichlid teleosts in southeast Mexico.

During a parasitological survey of the ichthyofauna of Lake Catemaco, a freshwater system in the Mexican State of Veracruz, the widespread copepod Ergasilus arthrosis Roberts, 1969 was recovered from two cichlid teleosts, Mayaheros urophthalmus (Günther) and Oreochromis sp. This is the first confirmed record of this copepod species outside of the United States and from Mexico; its finding as a parasite of cichlids represents an expansion of the known host range for this copepod. The local prevalence and intensity of infection of E. arthrosis was highest in M. urophthalmus. The infection prevalence of E. arthrosis on M. urophthalmus (60%) was higher than that known for other ergasilids on cichlids. Ergasilus arthrosis can be distinguished from its closest congener E. lizae Krøyer, 1863 by the morphometry of the antennary segments, the ventral ornamentation of the thoracic sclerites and by details of the antennulary setation, but also by its habitat and host preferences. Taxonomic illustrations and morphological details of the specimens examined are also provided together with comments on the variability of this species.