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28 results on '"Sánchez‐Crespo, Manuel"'

1. ¿Qué cree el juez –de verdad– del interrogatorio de testigos?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

2. ¿Cuándo debo pedir el interrogatorio de la parte contraria y cuándo es mejor no hacerlo?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

3. Presentación

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

4. ¿Qué hacer para conseguir los documentos en poder de la parte contraria en los procedimientos de reclamación de daños derivados de infracciones del derecho de la competencia?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

5. ¿Cuándo debo pedir la prueba testifical y cuándo es mejor no hacerlo? Breve excurso sobre la prueba testifical en el proceso civil

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

6. Estrategias en la prueba documental

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

7. Interrogatorio de parte

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

8. Pertinencia y utilidad de la prueba testifical

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

9. ¿Es admisible la renuncia a la prueba testifical admitida?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

10. Cómo elegir al mejor testigo y prepararlo

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

11. ¿Qué convence a un juez del interrogatorio de la parte y del testigo?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

12. Cómo interrogar a tu testigo y al de la parte adversa

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

13. Modelo Holístico de Evaluación de La Prueba Testifical (HELPT)

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

14. La percepción de la credibilidad del testigo. La perspectiva en la jurisdicción penal

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

15. Examen de un nuevo método de detección judicial de la mentira

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

16. ¿Qué hacer para conseguir los documentos que tiene la parte contraria?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

17. ¿Qué documentos aporto y cuáles no?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

18. ¿Qué espera un juez de un buen dictamen para ser convincente?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

19. Examen experimental de la credibilidad de los dictámenes periciales

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

20. ¿Cuándo un juez deja de creer en un dictamen pericial?

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

21. Índice

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

22. La influencia de la psicología del testimonio en la valoración de la prueba testifical del menor de edad en el proceso civil

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

23. Heurigrama 2.0.

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

24. Portadilla, Portada, Derechos de autor, Autores

Author

Lluch, Abel, Andino López, Xavier, Caral, Juan Antonio, de Miranda Vázquez, Mercè, Estalella del Pino, Carlos, Fernández León, Jordi, Ferreres Comella, Oscar, García López, Alejandro, García Mendaza, Sílvia, Gispert, Jaume, González, Marta, Izquierdo Blanco, José Luis, Lafita Secanilla, Pablo, Manzanero, Itziar, Méndez Tomás, Antonio L., Mercedes, Rosa María, Orellana de Castro, Víctor, Ortiz Rodríguez, Rafael, Pellicer Ortiz, Carmen, Picó i Junoy, Berta, Ribó, Joan, Richard González, Ana, Sánchez Sánchez-Crespo, Manuel, Serrano Fenollosa, Jordi, and Gonzalo Tixis, Berta

Published
2019

25. Reproductive Strategy of a Continental Shelf Lane Snapper Population from the Southern Gulf of Mexico.

Author

Trejo‐Martínez, Jorge, Brulé, Thierry, Morales‐López, Natalia, Colás‐Marrufo, Teresa, and Sánchez‐Crespo, Manuel

Abstract

Reproductive strategy in snapper seems directly related to whether a population or a species occurs over a continental or insular habitat. Since studies on Lane Snapper Lutjanus synagris reproduction have been mostly focused on populations associated with islands, the purpose of this work was to assess the reproductive strategy of a continental shelf population. Specimens (n = 1,165) sampled in the southern Gulf of Mexico along the northern coast of the Yucatan Peninsula between February 2008 and April 2010 were analyzed through histological examination of gonads. A male‐biased overall sex ratio was observed, with females being preponderant in larger size‐classes. As expected, the Yucatan population displayed the typical continental pattern of sexual maturity and reproductive seasonality. Percentage of maximum size at first maturity was less than 41% for both females and males, and the species reproduced in shallow waters (7–26‐m depth) all along the Yucatan coast, mainly between March and July, with spawning peaks observed in May and July. Lane Snapper exhibit asynchronous oocyte recruitment and batch spawning. Results of this study were compared with reproductive data available from both island and continental Lane Snapper populations. It was observed that Lane Snapper populations do not always conform to the pattern of reproductive seasonality and/or size at sexual maturity with regard to habitat type. This study contributes new information concerning the Lane Snapper’s reproductive strategy with regard to habitat type and depth and offers valuable information for the establishment of management strategies designed for Lane Snapper from the southern Gulf of Mexico. [ABSTRACT FROM AUTHOR]

Published
2021
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26. Major Surgery Affects Memory in Individuals with Cerebral Amyloid-β Pathology.

Author

Lage, Carmen, González-Suárez, Andrea, Alcalde-Hierro, María Puerto, Sampedro-González, María Isabel, Villanueva-Eguaras, María Ángeles, Sánchez-Crespo, Manuel Rubén, Widmann, Catherine, Brosseron, Frederic, Pozueta, Ana, López-García, Sara, García-Martínez, María, Kazimierczak, Martha, Bravo-González, María, Fernández-Rodríguez, Andrea, Drake-Pérez, Marta, Irure-Ventura, Juan, López-Hoyos, Marcos, Rodríguez-Rodríguez, Eloy, Heneka, Michael T., and Sánchez-Juan, Pascual

Subjects
GERIATRIC surgery, EXECUTIVE function, VERBAL memory, NEUROPSYCHOLOGICAL tests, ALZHEIMER'S disease, NEUROBEHAVIORAL disorders, DISEASE progression, BRAIN, RESEARCH, ORTHOPEDIC surgery, RESEARCH methodology, MEDICAL cooperation, EVALUATION research, COMPARATIVE studies, MEMORY disorders, PEPTIDES
Abstract

Background: Major surgery has been associated with perioperative neurocognitive disorders (PND), but the contributing factors and long-term prognosis are uncertain. We hypothesize that preclinical Alzheimer's disease (AD) might predispose to cognitive deterioration after surgery.Objective: To analyze the effect of amyloid-β on the cognitive trajectory after orthopedic surgery in a sample of non-demented subjects.Methods: Non-demented individuals older than 65 years that were on the waiting list for orthopedic surgery with spinal anesthesia underwent a neuropsychological assessment before and after surgery. During surgery, cerebrospinal fluid samples were obtained to determine AD biomarkers.Results: Cumulative incidence of PND was 55.2%during a mean follow-up of nine months. The most affected cognitive domains were executive function and constructional praxis. The presence of abnormal levels of amyloid-β was associated to a postoperative impairment in verbal and visual memory tests. According to their AD biomarker profile, participants were categorized as either Amyloid Positive (A+) or Amyloid Negative (A-). The incidence of PND did not differ between both groups. The A- group showed a tendency similar to the global sample, worsening in executive function tests and improving on memory scales due to practice effects. In contrast, the A + group showed a notable worsening on memory performance.Conclusion: Our findings support the hypothesis that surgery may promote or accelerate memory decline in cognitively asymptomatic subjects with brain amyloid-β deposits. [ABSTRACT FROM AUTHOR]

Published
2021
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27. Is the Queen conch Strombus gigas (Mesogastropoda: Strombidae) a species with Allee effect?

Author

Aldana Aranda, Dalila, Chávez Villegas, Jose Francisco, and Sánchez Crespo, Manuel

Subjects
Allee effect, efecto Allee, lcsh:Biology (General), reproductive behavior, Strombus gigas, efecto Sandy, sandy effect, comportamiento reproductivo, lcsh:QH301-705.5
Abstract

The marine park of Xel-Há has a population of Strombus gigas which breeds in the area. We determined the relationship between reproductive activity, conch density and environmental parameters. Samples were collected from February to December 2012, using the transect method, at four sites of Marine Park Xel-Ha, Quintana Roo, Mexico. Sediment samples were analyzed and classified using Folk & Ward’s method. Temperature, salinity and dissolved oxygen were also recorded. Density had a small correlation with sediment (Pearson r=0.29 with very coarse and r=0.26 with coarse sand), while mating and spawning had a correlation of r=0.54 and 0.62 with medium sand, respectively. Density was high in the four sites and was not associated with mating and spawning (r=0.08 and 0.03, respectively). For reproduction, S. gigas requires specific substrate conditions (sandy effect) and not just a density of 56 Conch Ha–1 (Allee effect). Rev. Biol. Trop. 62 (Suppl. 3): 207-213. Epub 2014 September 01. El parque marino de Xel -Há tiene una población de Strombus gigas que se cría en la zona. Determinamos la relación entre la actividad reproductiva, la densidad de la concha de S. gigas y los parámetros ambientales. Las muestras fueron recolectadas de febrero a diciembre de 2012, utilizando el método de transecto, en cuatro sitios del Parque Marino de Xel -Ha, Quintana Roo, México. Fueron analizados y clasificados utilizando la metodología de Folk & Ward. También se registraron temperaturas, salinidad y oxígeno disuelto. La densidad de concha mostró una baja correlación en la categoría de sedimentos (r = 0.29 , con muy gruesos y r = 0.26 con arena gruesa ), mientras que el apareamiento y desove con arena media mostraron una correlación de r = 0.54 y 0.62, respectivamente. Las densidades en cuatro sitios fueron altas y no se asociaron con el número de apareamientos y desove (r = 0.08 y 0.03, respectivamente). Para la reproducción, S. gigas requiere condiciones específicas de sustrato (efecto arenoso) y no sólo una densidad de 56 Conch Ha-1 (efecto Allee ).

Published
2014
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28. Red Grouper Reproduction in the Southern Gulf of Mexico.

Author

Brul, Thierry, Déniel, Christian, Colás-Marrufo, Teresa, and Sánchez-Crespo, Manuel

Abstract

The reproductive biology of red grouper Epinephelus morio from the inshore and offshore waters of the Yucatan Peninsula (Campeche Bank) was investigated over a 5-year period (1988-1993). Results confirmed that red grouper is a monandric protogynous hermaphrodite as shown by (1) the absence of primary males in samples, (2) the presence of transitionals in the population (1% of the total offshore catches), (3) the occurrence of a membrane-lined central cavity in the testes of all males and dorsal sinuses in the gonadal wall in most males, (4) the significant difference in size ranges and mean fork lengths of males and females, and (5) a female-biased male : female ratio in size-classes less than 72.0 cm fork length (FL). We found immature females all year round in inshore waters and immature females, mature females, and males, and transitionals in offshore waters. In the southern Gulf of Mexico, the species displayed seasonal reproduction, with single, annual peak spawning occurring in late winter and early spring (January-March). The greatest variations in the mean gonadosomatic index (GSI) of females were recorded between November (0.27%), February (2.14%), and April (0.17%) when they were ripening, ripe-running, or spent. Males were ripening between September and February, ripe-running from December through April, and spent in March. Spawning aggregations of red grouper were not observed. However, during the 1992 spawning period, 20 ripe-running females and 19 ripening and ripe-running males were caught near 20°47′N, 91°40′W on the western Campeche Bank on the second and fourth days after full moon. Sexual maturation in females occurred over a broad size range (38.9-72.0 cm FL). The size at first maturity, defined as length at which 50% of females were sexually mature ( L50), was 50.9 cm FL ± 1.2 (mean ±SE). Sex inversion in females did not occur at a particular size or at a precise time. Size range and median size at which females change sex were 41.0-85.4 cm FL and 59.7 cm FL, respectively. Transitionals were caught during 5 months of the year, including two peak spawning months (January and February). Fishery management implications are presented and discussed. [ABSTRACT FROM AUTHOR]

Published
1999
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