Evaluation of Field Dispersal and Survival Capacity of the Genetic Sexing Strain Tapachula-7 of<i>Anastrepha ludens</i>(Diptera: Tephritidae)

Flores, Salvador; Campos, Sergio; Gómez, Enoc; Espinoza, Emigdio; Wilson, Willy; Montoya, Pablo

doi:10.1653/024.098.0136

Cited by 16 publications

(15 citation statements)

References 31 publications

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“…High temperatures and fruit scarcity suggest a negative effect on field distribution of sterile flies (Figure ). This is remarkable given that a similar dispersal pattern with a lower survival of Tap‐7 is reported with respect to the standard bisexual strain in tropical areas (Flores et al., ; Orozco et al., ).Therefore, it seems that further research is required about dispersal, survival capacity, and sexual performance of the Tap‐7 strain in stressful environments in north‐eastern Mexico. Another alternative is the use of strains with higher survival capacity, such as those selected based on their desiccation resistance (Tejeda et al., ).…”

Section: Discussionsupporting

confidence: 69%

“…As of late, there is an increasing interest on performance issues of sterile A. ludens under field conditions and the optimization of economic resources. Examples of this interest is the development of the genetic sexing strain Tapachula 7 (Tap‐7) or the strains selected based on desiccation resistance under stressful environments (Arredondo, Ruiz, Montoya, & Díaz‐Fleischer, ; Flores et al., ; Orozco, Meza, Zepeda, Solís, & Quintero‐Fong, ; Tejeda et al., ).…”

Section: Introductionmentioning

confidence: 99%

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Seasonal variation of the capture and field distribution of sterile Anastrepha ludens in Tamaulipas, Mexico

Vanoye‐Eligio

Vázquez-Sauceda

Chacón-Hernández

et al. 2018

J Applied Entomology

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Anastrepha ludens (Loew) (Diptera: Tephritidae) is one of the most important citrus pest in Mexico. The sterile insect technique (SIT) is used against pest populations of fruit flies for suppression, eradication, containment and prevention to reduce damages in fruit‐growing areas. In this study, we analyzed the seasonal variation of captures and field distribution of sterile A. ludens released in different seasons of the year in north‐eastern Mexico. Chilled releases were conducted by air at constant densities per ha on a citrus area for a period of 32 weeks that included the coldest and warmest seasons that is winter, spring and summer. Multilure traps baited with torula yeast pellets were used to capture sterile flies. Fly capture data were compared over the three seasons and correlated with climate. The lowest number of captures of the sterile insect occurred in the summer and the highest in winter and spring. High and low temperatures were negatively correlated with fly captures. Field distribution was also negatively correlated with high temperatures in summer, but no relationships were observed in winter and spring. No relationships were observed between rainfall with capture and field distribution of sterile flies. These results indicate that summer is a season involving agro‐ecological and environmental constraints for the capture and field distribution of sterile flies. This study may be useful for enhancing release strategies and optimizing economic resources in north‐eastern Mexico. Further research on the behaviour of sterile flies under stressful environments is suggested.

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Section: Discussionsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Seasonal variation of the capture and field distribution of sterile Anastrepha ludens in Tamaulipas, Mexico

Vanoye‐Eligio

Vázquez-Sauceda

Chacón-Hernández

et al. 2018

J Applied Entomology

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“…The large scale and sustained application of SIT has been a key factor to maintain and expand the pest free areas (Liedo, ), and importantly, their also had gathered data of how SIT efficiency could be enhanced. While male life expectancy in the laboratory has been observed between 39 and 130 days (Carey et al., , ; Liedo, Carey, Celedonio, & Guillen, ; Tejeda et al., ), in field evaluations, where variable environmental conditions prevails, life expectancy oscillate around 2–10 days (Flores et al., ; Hernández, Orozco, Breceda, & Domínguez, ; Thomas & Loera‐Gallardo, ; Utgés, Vilardi, Oropeza, Toledo, & Liedo, ). The contrasting male life expectancies between laboratory and field indicate the possibility that sterile males are exposed to stress once released in the field.…”

Section: Introductionmentioning

confidence: 99%

Directional selection to improve the sterile insect technique: Survival and sexual performance of desiccation resistant Anastrepha ludens strains

Tejeda

Arredondo

Orozco‐Dávila

et al. 2017

Evolutionary Applications

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The sterile insect technique (SIT) is an effective, environmentally friendly method for insect control whose success depends on the sexual performance and survival of sterile males. These two parameters are influenced by environmental conditions of target areas, and releasing insects with a higher tolerance to stressful environments can improve SIT efficiency. Directional selection can be used to produce insect strains with higher tolerance to extreme environmental conditions, such as low humidity, for extended periods. We evaluated, under field cage conditions, the sexual competitiveness, sexual compatibility, and survival of strains of Anastrepha ludens (Loew) selected for desiccation resistance to determine the value of directional selection as a possible approach to enhance SIT efficiency. Fly strains (selected and unselected and those mass‐reared) were exposed to stressful conditions of low humidity and food and water deprivation for 24 hr before test. As a control, mild conditions without the stressors were used. No differences in sexual competitiveness and sexual compatibility between selected, nonselected, and mass‐reared strains were observed when previously exposed to mild conditions. Thus, selection for desiccation resistance does not modified negatively the sexual performance. However, when insects were exposed to stressful conditions, males of selected strains sexually outperform mass‐reared males. Additionally, selected strains presented higher survival than mass‐reared flies. The approach to integrate directional selection with other technologies in the SIT as well as the implications of using a desiccation‐selected strain in the current pest management program is discussed.

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“…Besides, issues such as competitiveness and sexual compatibility are addressed in order to improve the field performance of sterile flies regarding wild populations (Orozco‐Dávila, Hernández, Meza, & Domínguez, ; Rull, Brunel, & Mendez, ; Tejeda, Arredondo‐Gordillo, Orozco‐Dávila, Quintero‐Fong, & Díaz‐Fleischer, ). Also, genetic mechanisms have been tested such as the development of Tapachula 7 , a genetic sexing strain of A. ludens targeted to improve the efficiency of sterile flies and reduce costs through the release of males‐only populations (Arredondo, Ruiz, Montoya, & Díaz‐Fleischer, ; Flores et al, ; Orozco, Meza, Zepeda, Solís, & Quintero‐Fong, ).…”

Section: Introductionmentioning

confidence: 99%

“…In Mexico, continuous efforts are conducted to make more efficient the autocidal control for suppressing A. ludens wild populations. For example, the mass rearing of the unisexual strain Tapachula 7 (Tap‐7), the performance of sterile A. ludens under environmental constraints, or the design of more specialized release machines (Flores et al, ; Mubarqui et al, ; Orozco et al, ; Tejeda et al, ). However, the spatial analysis of the distribution of sterile A. ludens further more than a geographical point may provide results with practical implications in an AW‐IPM approach.…”

Section: Introductionmentioning

confidence: 99%

Mapping the spatial variability of the field distribution of sterile Anastrepha ludens over a release area

Vanoye‐Eligio

Vázquez‐Sauceda

Rocandio‐Rodríguez

et al. 2019

J Applied Entomology

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The sterile insect technique (SIT) is an environmental‐friendly method used against Anastrepha ludens Loew (Diptera: Tephritidae) populations. This study aimed to perform an analysis of the spatial variability of the field distribution of sterile A. ludens using a geostatistical approach along with Geographic Information Systems (GIS). Field data on captures of sterile A. ludens during a Valencia orange season over a release area were analysed using spherical, exponential and Gaussian variograms. Such variograms were evaluated by criteria such as the mean absolute error, average standard error, root mean square error and the coefficient of determination. Results revealed a spatially structured distribution of sterile A. ludens across the release area. Interpolated models by Ordinary Kriging technique exhibited continuous surfaces evidencing spatial heterogeneity of the distribution of flies. Such a result evidenced that the spatial dynamics of flies significantly varied despite the planned uniform coverage of the release. The GIS led to integrating spatial information of the spatial dynamics through one single model. The release activity should be improved westward of the studied area, as the final model suggested that the ratio sterile: wild is lower than that in the east. This study provides insights into the spatial analysis of the distribution of sterile flies further than one single geographical point. Moreover, it highlights geostatistical techniques and GIS as useful tools for the assessment of the impact and quality of the release activity over fruit‐growing areas subjected to an area‐wide integrated pest management approach.

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Evaluation of Field Dispersal and Survival Capacity of the Genetic Sexing Strain Tapachula-7 ofAnastrepha ludens(Diptera: Tephritidae)

Cited by 16 publications

References 31 publications

Seasonal variation of the capture and field distribution of sterile Anastrepha ludens in Tamaulipas, Mexico

Seasonal variation of the capture and field distribution of sterile Anastrepha ludens in Tamaulipas, Mexico

Directional selection to improve the sterile insect technique: Survival and sexual performance of desiccation resistant Anastrepha ludens strains

Mapping the spatial variability of the field distribution of sterile Anastrepha ludens over a release area

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