scholarly journals Injury and Spatial Distribution ofSpodoptera frugiperda(J. E. Smith) (Lepidoptera: Noctuidae) in OnionAllium cepa(Alliaceae) in Alto Paranaíba, Minas Gerais, Brazil

2012 ◽  
Vol 122 (3) ◽  
pp. 257-260 ◽  
Author(s):  
Flávio L. Fernandes ◽  
Juno F. S. Diniz ◽  
Flávia M. Alves ◽  
Luiz O. D. Silva
2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Ricardo J. P. S. Guimarães ◽  
Corina C. Freitas ◽  
Luciano V. Dutra ◽  
Carlos A. Felgueiras ◽  
Sandra C. Drummond ◽  
...  

Geographic Information Systems (GISs) are composed of useful tools to map and to model the spatial distribution of events that have geographic importance as schistosomiasis. This paper is a review of the use the indicator kriging, implemented on the Georeferenced Information Processing System (SPRING) to make inferences about the prevalence of schistosomiasis and the presence of the species ofBiomphalaria, intermediate hosts ofSchistosoma mansoni, in areas without this information, in the Minas Gerais State, Brazil. The results were two maps. The first one was a map ofBiomphalariaspecies, and the second was a new map of estimated prevalence of schistosomiasis. The obtained results showed that the indicator kriging can be used to better allocate resources for study and control of schistosomiasis in areas with transmission or the possibility of disease transmission.


2008 ◽  
Vol 28 (03) ◽  
pp. 126 ◽  
Author(s):  
J.L. Hernández-Mendoza ◽  
E.C. López-Barbosa ◽  
E. Garza-González ◽  
N. Mayek-Pérez

1993 ◽  
Vol 28 (3) ◽  
pp. 241-248
Author(s):  
M. L. Laster ◽  
D. D. Hardee ◽  
J. L. Roberson

Heliothis virescens backcross moths are most effectively released in wide-area release programs from pupae placed in the field prior to moth emergence. A significantly greater moth emergence was obtained in the field from unharvested pupae in rearing trays than was obtained from harvested pupae. Mating, oviposition, and egg viability of emerged female moths were not adversely affected by handling procedures. Moths released from emergence containers were recovered in the most distant trap, 5.5 km, from the release point. However, the greatest number of released moths was captured in pheromone traps within 1.7 km of the release point.


1991 ◽  
Vol 26 (2) ◽  
pp. 261-266
Author(s):  
Curtis A. Laub ◽  
John M. Luna

Armyworm, Pseudaletia unipuncta (Haworth), spatial and diurnal abundance in no-till corn was sampled at six-h intervals (at 0200,0800, 1400, and 2000) during three 24 h periods. During the early growth stages of corn, armyworm density on corn plants was higher during nighttime, and differed significantly between 0200 and 1400 hours. The number of armyworm feeding on leaf edges of the early growth stages of corn was significantly higher at 0200 than during any other time, and the proportion of total larvae on corn plants that were on leaf edges was significantly higher at 0200 than during the daytime. Daytime foliage sampling will underestimate the true populations of armyworm feeding on foliage by 1.8 to 31 fold, depending on the time and thoroughness of the sampling program.


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