Effect of temperatures on life expectancy and reproductive parameters of Megaselia halterata (Diptera: Phoridae) on different varieties of button mushroom

Vafaei Shooshtari, Reza; Abbasi, Saeed; Ali Zamani, Abbas; Barzegar, Somayeh

	Effect of temperatures on life expectancy and reproductive parameters of Megaselia halterata (Diptera: Phoridae) on different varieties of button mushroom
Euphrates Journal of Agriculture Science
Article 1, Volume 3, Issue 0, 2011, Pages 147-151
Authors
Reza Vafaei Shooshtari; Saeed Abbasi; Abbas Ali Zamani; Somayeh Barzegar
Abstract
Abstract: Throughout the past decade, edible fungi cultivation has become one of the most important fields of agriculture in Iran. Among edible fungi, white button mushroom, Agaricus bisporus Lange, is the most commonly grown mushroom in the Iran and all of the world and accounting for up to 95% of the total mushroom production. There are many limitations in production of button mushroom in Iran. The phorid fly, Megaselia halterata Wood, is one of the most destructive pests of button mushroom in the entire world. Some biological characteristics of M. halterata including reproduction parameters and life expectancy were investigated on three different varieties of button mushroom (2200, 512 and Delta) and at 20 and 25°C in laboratory condition. According to the results, no significant differences were observed for gross fecundity rates among different varieties of button mushroom and various temperatures. The highest values of gross fertility rate were 42.5 and 50.5 (females/female/generation) on Delta and 512 varieties at 20 and 25°C, respectively. The greatest egg mortality at both 20 and 25°C were occurred on 2200 variety. Temperature showed significant effect on net fecundity rate on 512 variety between 20 and 25°C. Also, net fecundity rate were significantly different among three varieties of button mushroom at 25°C. The maximum mean numbers of fertile eggs were obtained on Delta variety at both examined temperatures. Life expectancy of M. halterata at different conditions increased after the first larval period.

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