An insect growth regulator, pyriproxyfen, has been used for the control of a range of pest insects, including mosquitoes. Pyriproxyfen is effective in inhibiting adult emergence and sterilizing adult females. The Asian tiger mosquito, Aedes albopictus (Skuse), is an important vector of dengue and chikungunya, and is expanding its distribution throughout Europe and the Americas. In the present study, we evaluated the impact of pyriproxyfen-treated bed nets on population growth of Ae. albopictus under semi-field conditions, using 6 small microcosms. We created microcosms containing breeding sites to simulate the natural ecosystem of vector mosquito and installing miniature bed net treated with 350 mg/m2 pyriproxyfen in Experiment I and 35 mg/m2 in Experiment II. For each experiment, we also established microcosms installing untreated polyethylene net (untreated control). The installing nets were provided with artificially torn holes, to simulate damage and allow mosquitoes to penetrate. We released 100 pairs of Ae. albopictus into each microcosm, and allowed them to feed on a mouse under the bed nets at approximately 1-week intervals. In comparison with the untreated control microcosms, the number of eggs laid by the released adults in the pyriproxyfen-treated microcosms was significantly lower in both Experiment I and II. Moreover, egg hatchability was significantly suppressed and pupal mortality was increased. Our results indicate that tarsal contact with pyriproxyfen has been shown to suppress egg production and hatchability in adult females and the auto-dissemination of pyriproxyfen into larval breeding sites by adult mosquitoes, through contact with pyriproxyfen-treated polyethylene bed nets, may suppress the mosquito population density.

Background: Knowledge of adolescent reproductive health is still very low evidenced 83.7% of adolescent reproductive health and the lack of understanding of just 3.6% who know the importance of reproductive health. So also with the limited knowledge of adolescents about reproductive health often leads to premarital sex acts. City teenagers are increasingly daring sexual intercourse before marriage. Objective: To determine the relationship of adolescent dating behavior with adolescent premarital sexual incident in the village of the district Rendeng Kudus. Methods: This study was correlational. The approach used in this study was cross sectional. The population in this study were young in the village Rendeng totaling 140 people. Sample of 58 people. Data analysis using chi square.Results of the research Most teens have not suit the application value -the value of religion as many as 35 people (60.3%) and the appropriate application of value -the value of religion as much as 23 people (39.7%). Most teens have a negative sexual behaviors as many as 36 people (62.15) and was positive in 22 (37.9%). There is a relationship Application values of Islam with Genesis Premarital Sexual Teen in Village Rendeng RW 2-5 Kudus Regency (p value = 0.001).