scholarly journals Seasonal variation in natural mortality factors of Tuta absoluta (Lepidoptera: Gelechiidae) in open-field tomato cultivation

2018 ◽  
Vol 143 (1-2) ◽  
pp. 21-33 ◽  
Author(s):  
Leandro Bacci ◽  
Ézio Marques da Silva ◽  
Júlio Cláudio Martins ◽  
Marianne A. Soares ◽  
Mateus Ribeiro de Campos ◽  
...  
2018 ◽  
Vol 75 (3) ◽  
pp. 736-743 ◽  
Author(s):  
Leandro Bacci ◽  
Ézio M Silva ◽  
Gerson A Silva ◽  
Laércio J Silva ◽  
Jander F Rosado ◽  
...  

2018 ◽  
Vol 47 (2) ◽  
pp. 440-447 ◽  
Author(s):  
António Chamuene ◽  
Tamíris Alves Araújo ◽  
Gerson Silva ◽  
Thiago Leandro Costa ◽  
Paulo Geraldo Berger ◽  
...  

2018 ◽  
Vol 174 (2) ◽  
pp. 133-141
Author(s):  
Ézio M. da Silva ◽  
Ricardo S. da Silva ◽  
Laércio J. da Silva ◽  
Pablo da Costa Gontijo ◽  
Tarcísio V. da Silva Galdino ◽  
...  

1959 ◽  
Vol 91 (9) ◽  
pp. 535-542 ◽  
Author(s):  
C. H. Buckner

The relationship between the fate of cocoons of the larch sawfly, Pristiphora erichsonii (Htg.), and distance from small-mammal tunnels was studied during 1958 in the Whiteshell Forest Reserve of eastern Manitoba. The objects were to determine the distance that small mammals can detect cocoons and to observe possible effects of the interactions of small-mammal predation and other natural mortality factors of the insect. Additional analyses of the data provided information on the behaviour of the predators and the ecology of the prey insect.


2015 ◽  
Vol 109 (1) ◽  
pp. 120-131 ◽  
Author(s):  
Liora Shaltiel-Harpaz ◽  
Dan Gerling ◽  
Shaul Graph ◽  
Hendrika Kedoshim ◽  
Lotem Azolay ◽  
...  

2020 ◽  
Vol 49 (3) ◽  
pp. 445-455
Author(s):  
J R S Soares ◽  
J da Silva Paes ◽  
V C R de Araújo ◽  
T A de Araújo ◽  
R S Ramos ◽  
...  

2015 ◽  
Vol 43 (5) ◽  
pp. 713-724 ◽  
Author(s):  
Arturo Cocco ◽  
Salvatore Deliperi ◽  
Andrea Lentini ◽  
Roberto Mannu ◽  
Gavino Delrio

2009 ◽  
Vol 24 ◽  
pp. 9-15
Author(s):  
Gita Thapa ◽  
Daya Ram Bhusal

Diversity of butterfly was studied in Thankot and Syuchatar VDCs of Kathmandu District, during June 2007-March 2008. A total of 43 species of butterflies belonging to 32 genera and 9 families were recorded with Nymphalidae as the most commonly recorded family and Libytheidae and Acreidae are the least represented families. The species were collected in summer and winter seasons. Bushes, cultivated land, open field and forest were selected to study the habitats of butterflies. Bushes were found to be the most preferable habitat. Seasonal variation was also observed in some species. Three species namely Ypthima baldus, Ypthima nareda and Precis iphita showed color variation. Troides aeacus, a CITES listed species was also observed in this region. Key words: Acreidae; Libytheidae; Nymphalidae; Seasonal variation; Troides aeacus.. Journal of Natural History MuseumVol. 24, 2009,Page: 9-15 


1970 ◽  
Vol 102 (9) ◽  
pp. 1102-1111 ◽  
Author(s):  
Peter W. Price

AbstractPleolophus basizonus (Gravenhorst) is a parasitoid from Europe introduced in Canada and liberated between 1939 and 1949 to supplement natural mortality factors of sawfly populations. Three recoveries reported in the literature show that the parasitoid has dispersed 81 km at 4.3 km per year in Ontario, between 109 and 161 km at 4.5 and 5.6 km per year in Quebec, and 172 km at 8.6 km per year in Michigan. Dispersal occurs by walking, possibly by short flights and by water while the parasitoid is within the host cocoon. Female parasitoids do not fly unless disturbed and dispersal by water cannot account for their movement in Quebec. In observation trays, the mean rate of travel on the ground by female parasitoids was 20.9 cm per minute. This speed is sufficient to account for the rates of dispersal recorded in the field. The parasitoid was present in every jack pine stand sampled between 1965 and 1968 in the western part of the St. Maurice River watershed in Quebec. The most abundant host was Neodiprion swainei Middleton. Absolute population estimates indicate that the parasitoid responds positively to host density and that it is an important addition to the native parasitoid complex.


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