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RISS 인기검색어
- 검색키워드
- 저자 : Nur Faeza Abu Kassim (검색결과 3 건)
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Alhaji Hamisu Maimusa,Abu Hassan AHMAD,Nur Faeza Abu Kassim,Hamdan Ahmad,Hamady Dieng,Junaid RAHIM,Muhammad Ahmad DAHIRU 한국곤충학회 2019 Entomological Research Vol.49 No.2
This study was conducted to isolate and identify lactobacilli from larval and adult midgut of wild Aedes aegypti (Ae. aegypti) to find candidate bacteria for paratransgenic control. Characterization of the bacterial symbionts was done using Gram staining, motility test, catalase test, and biochemical tests, among others, and the morphological features were confirmed using a standard scheme that simplifies the identification of lactic acid bacteria. A total of 174 strains were isolated and identified, 135 strains from larval midgut and 39 strains from adult midgut (mean ± SE, 4.00 ± 0.72; P = 0.00). The isolated species were confirmed to be Lactobacillus fermentum, L. casei, L. acidophilus, L. viridescens, L. brevis and L. gasseri. It can be concluded that Ae. aegypti has the potential of harboring the cultivable bacterial symbionts. In conclusion, the isolated species were nominated for paratransgenic control, particularly L. fermentum, being found in large numbers from both larval and adulxt midgut.
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Hamady Dieng,Ooi Seow Hui,Ahmad Abu Hassan,Fatimah Abang,Idris Abd Ghani,Tomomitsu Satho,Fumio Miake,Hamdan Ahmad,Yuki Fukumitsu,Wan Fatma Zuharah,Abdul Hafiz Ab Majid,Nur Faeza Abu Kassim,Nur Aida Ha 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.3
Themagnitude of dengue transmission depends largely on the level of human–vector contact. Therefore, knowledge regarding the biting periodicity ofmosquitoes is crucial to determine transmission periods' risk, and in planning personal protection measures. Dengue vectors are day-active and endure transitory periods of starvation overnight. However, it is unclear howtheir blood feeding activity pattern is related to body sizewhen temporarily deprived of their main source of energy — sugar. We examined the changes in Aedes albopictus diurnal biting activity, taking into account larval nutritional history and adult starvation. Overall, large body size and nonstarvation conditions were associated with better blood feeding success, but these parameters did not significantly modify the timing of first blood feeding attempt. Females of both sizes showed significant temporal variations in their blood feeding activities. Under conditions of starvation, blood meal uptake was much greater in large females from morning to evening. Similar variations of feeding activity were observed in small females, except in the morning. Under non-starvation conditions, the blood feeding activity of small mosquitoes tended to decrease over time, whereas blood meal uptake activity was high and remained almost constant from morning to evening for larger mosquitoes. Thiswork emphasizes the importance of body size and hunger on the dynamics of vector–host interaction and has important implications for the development of novel strategies for the prevention of disease transmission. Knowingwhen dengue vectors actively bite during the day can help in timing effective personal protective measures.
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Hamady Dieng,Tomomitsu Satho,Fatimah Abang,Erida Wydiamala,Nur Faeza Abu Kassim,Nur Aida Hashim,Wan Fatma Zuharah,Gabriel Tonga Noweg 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.1
Blood feeding and mating are critical behaviors that regulate both mosquito population maintenance and disease transmission. However, our understanding of mosquito mating systems remains incomplete. One of the most critical issues is a lack of understanding regarding how and where males and females encounter one another. This study was performed to investigate changes in key mating behaviors of Ae. aegypti relative to female blood feeding opportunities, taking into account male density. We compared courtship latency and copulation activity between single and pooled males in a range of assays performed in the presence or absence of a blood source and after blood feeding. The time taken by grouped males to initiate courtship in the presence of a host was much shorter than that in single males. There was no significant difference in courtship latency between pooled and single males in the absence of a blood source or after blood feeding. At low male density, the presence of the host and blood meal ingestion provided better conditions for copulation. At high male density, however, copulation activity was decreased after blood feeding, but remained high regardless of the presence or absence of the host. In addition to providing insight into the mating ecology of Aedes aegypti, this study indicated that the presence of a blood source influences how males encounter and copulate with females. The observation that copulation activity decreases after blood feeding when males are numerous provides new avenues for improving mass release programs of sterile mosquitoes.
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