Spatial heterogeneity of Anastrepha ludens populations over a large citrus region including a sterile insect release area in northeastern Mexico

2016 ◽  
Vol 18 (5) ◽  
pp. 843-858 ◽  
Author(s):  
V. Vanoye-Eligio ◽  
Ludivina Barrientos-Lozano ◽  
A. Mora-Olivo ◽  
G. Sánchez-Ramos ◽  
J. C. Chacón-Hernández
2019 ◽  
Vol 144 (3) ◽  
pp. 170-180 ◽  
Author(s):  
Venancio Vanoye‐Eligio ◽  
María de la Luz Vázquez‐Sauceda ◽  
Mario Rocandio‐Rodríguez ◽  
Julio César Chacón‐Hernández ◽  
Edilia Rosa‐Manzano

1993 ◽  
Vol 28 (4) ◽  
pp. 350-362 ◽  
Author(s):  
Donald B. Thomas

Pupae of the Mexican fruit fly, Anastrepha ludens (Loew) (=mexfly), were placed outdoors at two localities in northeastern Mexico in order to measure mortality rates during this phase of the life cycle. Replicates were placed monthly in citrus orchards and in a montane canyon where native host plants supported wild mexfly populations. Replicates were placed in sheltered sites under trees and in exposed sites between trees. Adult flies emerged from 38% of these pupae. Deermice, Peromyscus leucopus (Rafinesque) and P. boylii (Baird), were found to destroy 34% of the total pupae. There was no difference in predation rates or adult eclosion between the orange grove and the montane canyon. There were significant (P = 0.05) differences in predation rates among months and in pupal survival between sheltered and exposed sites, with greatest survival of pupae in the sheltered sites during the summer months. Only weak correlations were found between monthly mortality rates and temperature and moisture extremes. The effects of weather variables were probably masked by the pattern of predation. In the native habitat variable predation rates seemed to result from natural cycles in the abundance of mice or from temporal shifts in their food supply. In the citrus orchard cultural practices such as irrigation and weed control displaced or reduced the rodent populations resulting in lower predation rates during some months.


2019 ◽  
Vol 167 (6) ◽  
pp. 517-525 ◽  
Author(s):  
Venancio Vanoye‐Eligio ◽  
María Vázquez‐Sauceda ◽  
Madaí Rosas‐Mejía ◽  
Alicia Vera ◽  
Dora Elia Cortés‐Hernández ◽  
...  

2015 ◽  
Vol 2 (1) ◽  
pp. 50-59
Author(s):  
V. Medvedev

Aim. To consider soil continuality and discreteness as features of heterogeneity manifestation in a soil cover, important for construction of agriculture systems. Methods. Geostatistical research of soil spatial heterogeneity, revealing the contours of a fi eld with various parameters of fertility. Results. The use of principles of precise agriculture and inspection of indicative properties of fi eld soils using a regular grid allowed to divide a fi eld into contours with three levels of fertility: the fi rst one is characterized by optimal or close to optimum properties which allows refusing from (or reducing substantially) tillage, introduction of fertilizers or chemical ameliorates; the second one has average parameters of fertility corresponding to zonal soils and demands the application of zonal technologies; the third one (with the worst parameters of fertility) presupposes regular use of the improved technologies. Conclusions. The introduction of precise agriculture will allow replacing a traditional zonal system with thenew which is soil-protecting and resource-saving one.


2017 ◽  
Vol 24 (5) ◽  
pp. 1091
Author(s):  
Jia WO ◽  
Binduo XU ◽  
Ying XUE ◽  
Yiping REN ◽  
Chongliang ZHANG

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