Life Tables of Bean  Leafminers Liriomyza sativae Wiki (Diptera : Agromyzidae) on Three Cultivars of  Climbing Bean Under Unheated Plastic House Conditions

Zakaria Baker, Safaa; Mohamad Abbas, Liath

	Life Tables of Bean Leafminers Liriomyza sativae Wiki (Diptera : Agromyzidae) on Three Cultivars of Climbing Bean Under Unheated Plastic House Conditions
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 15, Issue 4, 2015, Pages 99-108
Authors
Safaa Zakaria Baker; Liath Mohamad Abbas
Abstract
Field study carried out on three climbing bean varieties under unheated plastic house conditions to determine the biotic and abiotic mortality factors that affected on the population density of bean leafminers Liriomyza sativae and to determine the most responsible factor in changing of its population density ( k – factor) through the construction of the monthly complete life tables. The study showed variations in mortality percentages of the different insect stages during the growing season of bean which were due to factors unviability of eggs, parasitism and predation and unknown causes and adult mortality, photoperiod, adult mortality was the most responsible factor in causing mortality of normal females , the relative contribution to total mortality for normal females (K- value) ranked first and which ranged from 1.1 to 1.3 as compared with the other mortality factors which K values amounted to less than 0.1, the results showed that the highest mortality percentage of adults were in the Derme variety amounted to 95.11%, followed by Mesale variety (93.97 %) while the lowest mortality percentage was in the Yagmur variety (92.13%). Trend Indices were 1.52 and 1.14 in Mesale and Yagmur cultivars respectively ,which indicated to an increase in the density of the insect in January month, while in Derme cultivar was 0.93, which indicated to decline in insect population on it..
Keywords
Life tables; bean leafminers; mortality factors; parasitism; predation

Statistics Article View: 128 PDF Download: 77