Puccinia melampodii Diet. and Holow. as a Biological Control Agent of Parthenium hysterophorus

2010 ◽  
Vol 1 (1) ◽  
Author(s):  
DB Kelaniyangoda ◽  
HMRK Ekanayake
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Parthenium Hysterophorus

Biology of Bucculatrix parthenica Bradley sp. n. (Lepidoptera: Bucculatricidae) and its establishment in Australia as a biological control agent for Parthenium hysterophorus (Asteraceae)

1990 ◽  
Vol 80 (4) ◽  
pp. 427-432 ◽  
Author(s):  
A. S. McClay ◽  
R. E. McFadyen ◽  
J. D. Bradley
Keyword(s):  
Biological Control ◽  
Life Cycle ◽  
Host Plant ◽  
Host Specificity ◽  
Biological Control Agent ◽  
Control Agent ◽  
Field Conditions ◽  
Parthenium Hysterophorus ◽  
Leaf Miners

AbstractBucculatrix parthenica Bradley sp. n., a moth native to Mexico, is described. It has been released and established in Queensland, Australia, as a biological control agent for its host plant, Parthenium hysterophorus. The moth oviposits on leaves of its host. First and second instar larvae are leaf miners, and later instars feed externally on the leaves. The life cycle occupies about 25 days under field conditions. B. parthenica was narrowly oligophagous in host-specificity tests. In Mexico the insect is scarce but in Queensland it has become abundant enough to cause extensive defoliation of its host plant at some sites. Its rapid increase in Queensland is attributed to the absence of parasitism.

scholarly journals Diapause behaviour of Zygogramma bicolorata (Coleoptera: Chrysomelidae), a biological control agent for Parthenium hysterophorus (Asteraceae), in Bangalore, India

1993 ◽  
Vol 83 (3) ◽  
pp. 383-388 ◽  
Author(s):  
K. P. Jayanth ◽  
Geetha Bali
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Extended Period ◽  
Control Agent ◽  
Parthenium Hysterophorus ◽  
Continuous Exposure ◽  
Zygogramma Bicolorata ◽  
Before And After ◽  
Summer Temperatures ◽  
Over Time

AbstractZygogramma bicolorata Pallister was introduced for biological control trials against the weed Parthenium hysterophorus (Asteraceae) in India. The insect entered diapause over an extended period of time between July and December in Bangalore. Diapausing adults burrowed into the soil, and emerged in May–June with the commencement of monsoon rains. Percentage diapause increased over time, peaking at 72% during November. Non-diapausing adults were capable of breeding, under laboratory conditions, during the winter. Some adults bred both before and after diapause, during two consecutive years. Soil moisture played an important role in providing the conditions for burrowing or emerging from the diapause chambers. The studies also showed that diapausing adults had to be exposed to the high summer temperatures, for termination of the diapause. It was possible to break diapause by continuous exposure to 30°C, 35°C and 40°C for 22 days, nine days and 10 hours, respectively, during February–March, about three months after its inception. This method can be used to initiate mass multiplication for carrying out releases early in the season.

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