Functional role of neuropeptide leucokininii in growth inhibition of red palm weevil Rhynchophorus ferrugineus
Functional role of neuropeptide leucokininii in growth inhibition of red palm weevil Rhynchophorus ferrugineus
Wednesday, November 18, 2015
Exhibit Hall BC (Convention Center)
Peptides are known to on act to discourage the growth of insects. In this perspective, authors studied the biological and
physiological effects of LeucokininII on the growth of Red Palm Weevil through adult insect feeding of the sugar cane treated with
different concentrations (0.05%, 0.1%, 0.25%, 0.4%) and biological effects on the number of eggs, the percentage of hatching, the
length of the generation and the proportion of deformation. Results showed that there is a significant reduction in the number of eggs
laid by the insects as the average number of eggs/female 75.7, 63.5, 59.4, 55.1 egg for each of the concentrations, respectively,
compared with the average 140.2 egg in the control group, and reduction of percentages of hatching in all treatment as 71.4%, 64.6%,
70% and 71.5% respectively, compared with 79.3% of the control group. The percentage of deformations in egg densities included
44.4%, 15.4%, 22.6%, 27.8% compared to the control group. The results showed that there are a number of large deformations in the
resulting larvae for different treatments. The conclusion is drawn that this study using LeucokininII confirmed inhibition growth and
caused an imbalance in the development stages of different insects due to its effect on the hormones that control molting of insects.
This conclusion is furthermore apparent in the larval stage, as it appeared that LeucokininII prevents the insect from completing its
life cycle. Test results using LeucokininII are encouraging, and its future potential use in reducing Red Palm Weevil deserves broader
studies. If the spread of currently known that this LeucokininII is without prejudice to the work of the hormonal system.
physiological effects of LeucokininII on the growth of Red Palm Weevil through adult insect feeding of the sugar cane treated with
different concentrations (0.05%, 0.1%, 0.25%, 0.4%) and biological effects on the number of eggs, the percentage of hatching, the
length of the generation and the proportion of deformation. Results showed that there is a significant reduction in the number of eggs
laid by the insects as the average number of eggs/female 75.7, 63.5, 59.4, 55.1 egg for each of the concentrations, respectively,
compared with the average 140.2 egg in the control group, and reduction of percentages of hatching in all treatment as 71.4%, 64.6%,
70% and 71.5% respectively, compared with 79.3% of the control group. The percentage of deformations in egg densities included
44.4%, 15.4%, 22.6%, 27.8% compared to the control group. The results showed that there are a number of large deformations in the
resulting larvae for different treatments. The conclusion is drawn that this study using LeucokininII confirmed inhibition growth and
caused an imbalance in the development stages of different insects due to its effect on the hormones that control molting of insects.
This conclusion is furthermore apparent in the larval stage, as it appeared that LeucokininII prevents the insect from completing its
life cycle. Test results using LeucokininII are encouraging, and its future potential use in reducing Red Palm Weevil deserves broader
studies. If the spread of currently known that this LeucokininII is without prejudice to the work of the hormonal system.
