Effects ofBacillus thuringiensisvar. kurstakiand Spinosad on three larval stages 1st, 2nd and 3rd of tomato borer,Tuta absoluta(Meyrick) (Lepidoptera: Gelechiidae) in laboratory conditions

2014 ◽  
Vol 48 (5) ◽  
pp. 377-384 ◽  
Author(s):  
Azra Hashemitassuji ◽  
Mohammad Hassan Safaralizadeh ◽  
Shahram Aramideh ◽  
Zahra Hashemitassuji
2019 ◽  
Vol 20 (3) ◽  
pp. 352-362
Author(s):  
Abdelkader harizia ◽  
◽  
Abdelkader Benguerai ◽  
Yahia Boukhari ◽  
◽  
...  

A commercial formulation of Bacillus thurengiensis var Kurstaki (BTK) (IAB Bt) has been shown to be effective in controlling Tutaabsoluta Zeller larvae under laboratory conditions. Five concentrations are tested ((200, .350;500;650et800ppm)by ingestion, on the various larval stages (L1, L2, L3, L4 and L5). The larval mortality caused by BTK swelledwith increasing concentrations. The high concentrations of 650 and 800 ppm give 100% mortality rates for the early stages L1, L2, L3 and L4. Theacute toxicity (LC50) of BTK calculated for all larvae is 517 ppm. The lethal efficacy of BTK is noted 02 days, after the ingestion treatment, for the young stages (L1 and L2) and 04 at 6 days for the older larvae (L3 and L4) with a LT50, all larval stages combined equal to 2.6 days.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Orlando Campolo ◽  
Asma Cherif ◽  
Michele Ricupero ◽  
Gaetano Siscaro ◽  
Kaouthar Grissa-Lebdi ◽  
...  

BioControl ◽  
2011 ◽  
Vol 56 (6) ◽  
pp. 883-891 ◽  
Author(s):  
Oscar Mollá ◽  
Joel González-Cabrera ◽  
Alberto Urbaneja

Zootaxa ◽  
2009 ◽  
Vol 2206 (1) ◽  
pp. 45-61 ◽  
Author(s):  
JOSÉ MARÍA LANDEIRA ◽  
FERNANDO LOZANO-SOLDEVILLA ◽  
JUAN IGNACIO GONZÁLEZ-GORDILLO

The first five zoeal stages of Plesionika narval were obtained from 15 days of laboratory culture. All larval stages are described and illustrated in detail. Zoeal characters are compared with the previous described larvae of Plesionika acanthonotus and Plesionika edwardsii and with undetermined zoeas of Pandalidae from plankton samples.


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