Sexual Competitiveness of Anastrepha ludens (Diptera: Tephritidae) Males from the Genetic Sexing Strain Tap-7 in the Citrus Region of Montemorelos, Nuevo Leon, Mexico

2019 ◽  
pp. 209-216
Author(s):  
Patricia López ◽  
Juan Heliodoro Luis ◽  
Refugio Hernández ◽  
Pablo Montoya
Keyword(s):  
Anastrepha Ludens ◽  
Genetic Sexing ◽  
Nuevo Leon ◽  
Nuevo León ◽  
Genetic Sexing Strain

Female pupae of the genetic sexing strain “Tap-7” of Anastrepha ludens as hosts of Coptera haywardi

BioControl ◽  
2013 ◽  
Vol 59 (2) ◽  
pp. 149-157 ◽  
Author(s):  
Florida López-Arriaga ◽  
Pablo Montoya ◽  
Jorge Cancino ◽  
Jorge Toledo ◽  
Pablo Liedo
Keyword(s):  
Anastrepha Ludens ◽  
Genetic Sexing ◽  
Genetic Sexing Strain

Pre- and Post-Copulatory Competitiveness of the Genetic Sexing Strain Tapachula-7 of Anastrepha ludens (Diptera: Tephritidae)

2020 ◽  
Vol 113 (5) ◽  
pp. 2163-2170
Author(s):  
Yair Contreras-Navarro ◽  
Diana Pérez-Staples ◽  
Dina Orozco-Dávila ◽  
Francisco Díaz-Fleischer
Keyword(s):  
Sterile Insect Technique ◽  
Copulatory Behavior ◽  
Mass Rearing ◽  
Economic Importance ◽  
Anastrepha Ludens ◽  
Sexual Performance ◽  
Field Cage ◽  
Wild Female ◽  
Genetic Sexing ◽  
Genetic Sexing Strain

Abstract Anastrepha ludens (Loew) (Diptera: Tephritidae) is an endemic pest of Mexico, attacking several fruits of economic importance. The Sterile Insect Technique (SIT), consisting of mass-rearing, irradiation and release of adults, is used to control this pest in affected areas. Currently, a genetic sexing strain (Tapachula 7, Tap-7) consisting only of A. ludens males is being released, yet we lack information on its sexual performance at the early ages when they are released and on its post copulatory behavior in terms of sperm transfer and mating inhibition. Here, sexual competitiveness at young ages and ability to inhibit female re-mating was compared between sterile Tap-7, Standard Bisexual (SB), or wild males both in laboratory and field cage conditions. Sperm stored by females mating with wild, Tap-7, or SB strain males was also compared. Six-day-old sterile Tap-7 males had low mating rates, however, by 7 d of age 80% of males had mated. Tap-7 males were just as likely as wild males to inhibit wild female re-mating. In field cages, sterile Tap-7 males mated faster than wild and sterile males from the SB strain and had comparable mating success to wild males. Females mated to sterile Tap-7 males stored more sperm than those mated to sterile SB males. Females mated to wild males stored more sperm than females mated to any other type of male. Mass-rearing had a greater effect on decreasing sperm stored by females than irradiation. We recommend continuing the release of the GSS strain of A. ludens.

scholarly journals A Novel Genetic Sexing Strain of Anastrepha Ludens for Cost-Effective Sterile Insect Technique Applications: Improved Genetic Stability and Rearing Efficiency

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 499
Author(s):  
Edwin Ramírez-Santos ◽  
Pedro Rendon ◽  
Georgia Gouvi ◽  
Antigone Zacharopoulou ◽  
Kostas Bourtzis ◽  
...  
Keyword(s):  
Genetic Stability ◽  
Sterile Insect Technique ◽  
Production Efficiency ◽  
Small Scale ◽  
Management Approach ◽  
Anastrepha Ludens ◽  
Male Mating ◽  
Pest Species ◽  
Genetic Sexing ◽  
Genetic Sexing Strain

Anastrepha ludens (Loew) is one of the most destructive insect pests damaging several fruits of economic importance. The sterile insect technique (SIT) is used under an area-wide integrated pest management approach, to suppress these pest populations. Mass rearing facilities were initially established to produce sterile males of bi-sexual strains in support of SIT. The first genetic sexing strain (GSS) for A. ludens, Tapachula-7, based on pupal color dimorphism, was a key development since the release of males-only significantly increases the SIT efficiency. In this study, we document the development of a novel pupal color-based GSS. Twelve radiation-induced translocation lines were assessed as potential GSS in terms of recombination rates and rearing efficiency at a small scale. The best one, GUA10, was cytogenetically characterized: it was shown to carry a single translocation between the Y chromosome and chromosome 2, which is known to carry the black pupae marker. This GSS was further evaluated at medium and large scales regarding its genetic stability, productivity and quality versus Tapachula-7. GUA10 presented better genetic stability, fecundity, fertility, production efficiency, flying ability, and male mating, clear indicators that GUA10 GSS can significantly improve the efficacy and cost-effectiveness of SIT applications against this pest species.

Packing and Postirradiation Handling of the Anastrepha ludens (Diptera: Tephritidae) Tapachula-7 Genetic Sexing Strain: Combined Effects of Hypoxia, Pupal Size, and Temperature on Adult Quality

2018 ◽  
Vol 111 (2) ◽  
pp. 570-574 ◽  
Author(s):  
José Arredondo ◽  
Lia Ruiz ◽  
Pablo Montoya ◽  
Francisco Díaz-Fleischer
Keyword(s):  
Anastrepha Ludens ◽  
Combined Effects ◽  
Genetic Sexing ◽  
Pupal Size ◽  
Genetic Sexing Strain

Performance of the Tap-7 Genetic Sexing Strain Used to Control Anastrepha ludens Populations in the Citrus Region of Tamaulipas, Mexico

2019 ◽  
pp. 177-189
Author(s):  
Salvador Flores ◽  
Sergio Campos ◽  
Enoc Gómez ◽  
Rubén Leal Mubarqui ◽  
Jorge Luis Morales-Marin ◽  
...  
Keyword(s):  
Anastrepha Ludens ◽  
Genetic Sexing ◽  
Genetic Sexing Strain

Demography of a genetic sexing strain of Anastrepha ludens (Diptera: Tephritidae): effects of selection based on mating performance

2017 ◽  
Vol 20 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Luis Quintero-Fong ◽  
Jorge Toledo ◽  
Lorena Ruiz-Montoya ◽  
Pedro Rendón ◽  
Dina Orozco-Dávila ◽  
...  
Keyword(s):  
Anastrepha Ludens ◽  
Genetic Sexing ◽  
Genetic Sexing Strain ◽  
Mating Performance

Selection by mating competitiveness improves the performance of Anastrepha ludens males of the genetic sexing strain Tapachula-7

2016 ◽  
Vol 106 (5) ◽  
pp. 624-632 ◽  
Author(s):  
L. Quintero-Fong ◽  
J. Toledo ◽  
L. Ruiz ◽  
P. Rendón ◽  
D. Orozco-Dávila ◽  
...  
Keyword(s):  
Development Time ◽  
Mass Rearing ◽  
Quality Parameters ◽  
Anastrepha Ludens ◽  
Sexual Performance ◽  
Genetic Sexing ◽  
Mating Competitiveness ◽  
Colony Management ◽  
Management Method ◽  
Genetic Sexing Strain

AbstractThe sexual performance of Anastrepha ludens males of the Tapachula-7 genetic sexing strain, produced via selection based on mating success, was compared with that of males produced without selection in competition with wild males. Mating competition, development time, survival, mass-rearing quality parameters and pheromone production were compared. The results showed that selection based on mating competitiveness significantly improved the sexual performance of offspring. Development time, survival of larvae, pupae and adults, and weights of larvae and pupae increased with each selection cycle. Differences in the relative quantity of the pheromone compounds (Z)-3-nonenol and anastrephin were observed when comparing the parental males with the F4 and wild males. The implications of this colony management method on the sterile insect technique are discussed.

El estilo de aprendizaje y su relación con el desempeño académico en estudiantes de arquitectura de la Universidad Autónoma de Nuevo León

2003 ◽  
Vol 3 (2) ◽  
pp. 123-134
Author(s):  
Irma Cantú
Keyword(s):  
Nuevo Leon ◽  
Nuevo León

El estudio tuvo el propósito de conocer la relación que existe entre el estilo de aprendizaje predominante del alumno de arquitectura —así como las subcategorías presentadas por Alonso, Gallegos y Honey (estilo activo, estilo reflexivo, estilo teórico y estilo pragmático)— y su desempeño académico, en función de la importancia que, desde el punto de vista pedagógico, sus resultados podrían tener para redefinir los enfoques didácticos en áreas del conocimiento con las características teórico-prácticas como las de la arquitectura y el diseño. Se trata de un estudio cuantitativo, descriptivo y correlacional, que utiliza una muestra probabilística estratificada de 288 sujetos. El instrumento utilizado fue el Inventario de Estilos de Aprendizaje, de Honey-Alonso. Se utilizó la prueba de dependencia P2 (Ji cuadrado), para estudiar la relación entre el estilo de aprendizaje predominante del alumno y su desempeño académico y el coeficiente de correlación r de Pearson para el estudio de cada una de las subcategorías de los estilos de aprendizaje del alumno y su relación con su desempeño académico. Los resultados obtenidos demostraron que el desempeño académico de los estudiantes expresado por el rendimiento, es influido, para algunos positivamente y para otros negativamente, por el estilo de aprendizaje; se concluye en términos generales que existe una correlación significativa entre el desempeño académico y el estilo de aprendizaje institucional.

Implementación de estrategias de mejora continua en el Bachillerato de Educación a Distancia

2018 ◽  
Vol 10 (20) ◽  
pp. 37
Author(s):  
Elisa María Lankenau Caballero ◽  
Anny Frid Ramos
Keyword(s):  
Ad Hoc ◽  
Nuevo Leon ◽  
Educación A Distancia ◽  
Nuevo León

<p>Desde 2013, la Preparatoria No. 2 de la Universidad Autónoma de Nuevo León (UANL), por medio del Bachillerato a Distancia, atiende a una población de educativa de carácter nacional. Esto se da a través de una metodología en bloques, congruente con las características particulares de la población estudiantil, entre los que se encuentran adultos con actividades laborales, familiares, educativas y sociales. Esta metodología comprende una serie de acciones estratégicas que permitieron cristalizar el egreso de 98 estudiantes con perfiles competentes <em>ad hoc </em>para su progreso en el campo laboral, o bien, su inserción al Nivel Superior. Asimismo, bajo el compromiso de elevar tanto la calidad educativa del Bachillerato a Distancia como el porcentaje de eficiencia terminal de los estudiantes con estas características, se considera la implementación de nuevas estrategias que permitirían continuar con la mejora del programa.</p>

El impacto de las estrategias del Departamento de Orientación en la modalidad mixta

2016 ◽  
Vol 8 (16) ◽  
pp. 89
Author(s):  
Blanca Elizabeth Garza Garza ◽  
Jorge Rodríguez Cavazos
Keyword(s):  
Nuevo Leon ◽  
Nuevo León

La reprobación y deserción ha sido una problemática constante en la modalidad mixta de la Escuela Preparatoria número 8 de la Universidad Autónoma de Nuevo León (UANL). La población considerada para este estudio fue de treinta y tres alumnos, quienes en los semestres anteriores no llevaban un seguimiento de orientación psicopedagógica. Con la apertura del Departamento de Orientación se definieron las áreas de apoyo en la Orientación Psicológica e Información Profesional y Laboral, dado que son las materias del área de Desarrollo Humano donde se interviene de manera individual, grupal, masiva, en línea, especializada, por pares y mixta. Los ejes de acción son tres: prevención, formación e intervención. Los resultados de la investigación exploratoria han permitido identificar a los alumnos en riesgo de reprobación y aquellos propensos a abandonar la escuela. Con estas acciones ha sido incrementada la eficiencia terminal.

Sign in / Sign up

Export Citation Format

Share Document