Influence of different temperatures and prey species on development larvae of the predator Chrysoperla carnea (Stephen)under laboratory conditions | ||
| Jornal of Al-Muthanna for Agricultural Sciences | ||
| Article 1, Volume 2, Issue 1, November 2014, Pages 1-15 | ||
| Abstract | ||
| The study was conducted to investigate the effect of nymphs of two different prey (the poplar Euphrates aphid Chaitophorus euphraticus Hodjat and mealy bugs Nipaecoccus viridis (Newst.) under different temperatures (20, 25, 30 and35) Centigrade. In development of larval instars and stage for the predator Chrysoperla carnea (Stephen).The temperature and the type of prey and overlap between them showed him effect on the averages in some of the parameters as life of the larvae, where that the results showed maximum averages for period there with the temperatures impact and were as follow (7.37, 7.90, 8.72 and 24.03) days of all previous stages and 20 Centigrade the minimum is (2.21, 2.22, 1.11 and 3.17) to be continued every day at temperature of 35 Centigrade that the effecting of kind of prey and it has reached higher medium of (4.39, 4.82, 4.72 and 12.78) day of all previous for time of third stage of larva growing of all larva and when the predators larva were fed on mealy bugs nymphs and it reached to (3.33, 3.75, 4.15 and 11.16) days of all previous for time, in case of interfering with temperature degree and the kind of prey and the minimum has been reached to (8.49, 9.04, 10.00 and 27.63) day of all previous for time at temperature 20 Centigrade in case of feeding the predators larva on bug nymphs of minimum at third stage of larva on temperature of (0 and 0) days and the kind of prey and to be done on temperature of 35 Centigrade and use wheat bug larva to feed the female predators larva , but some of them are different than of first cycle and second cycle and minimum level is (2and2.1185) to be done on temperature of 35 Centigrade in case of feeding the predators larva on prey larva, and that study has been confirmed that temperature degrees as the same time the dead rates of predator larva is maximum of the third and first to be as (44.5،25،60.25) to be performed on feeding of wheat bug larva but the irregular of predator larva of second in case of effecting the feeding that depend on the temperature. Conclusion: From the results of this work we can conclude those upon the rearing of the predator on the poplar Euphrates aphid as well as we are given perfect in the results of this study. all one at to be done on temperature of 25 Centigrade. | ||
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