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Laboratory efficacy of mycoparasitic fungi(Aspergillus tubingensis and Trichoderma harzianum) against tropical bed bugs(Cimex hemipterus)(Hemiptera:Cimicidae)

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Asian Pacific Journal of Tropical Biomedicine 2017年第4期7卷 288-293页

作者： Zulaikha Zahran Nik Mohd Izham Mohamed Nor Hamady Dieng Tomomitsu satho Abdul Hafiz Ab Majid Household and Structural Urban Entomology Laboratory Vector Control Research UnitSchool of Biological SciencesUniversiti Sains Malaysia Plant Pathology Laboratory School of Biological SciencesUniversiti Sains Malaysia Institute of Biodiversity and Environmental Conservation Universiti Malaysia Sarawak Department of Microbiology Faculty of Pharmaceutical SciencesFukuoka University

Objective: To test the effectiveness of conidial spore formulations [Aspergillus tubingensis(***) and Trichoderma harzianum(***)] against tropical bed bugs, Cimex ***: Spore formulations were made from two fungal strains, *** and *** bed bugs were exposed to the conidial spores placed soaked onto a fabric cloth for 1 h and the mortality counts were recorded daily until 14 ***: Mean survival times based on Kaplan–Meier survival analysis showed no significant differences between all the concentrations in both the fungal isolates:*** and ***, the evaluation of both the isolates in terms of virulence resulted in low lethal hours in all the concentrations except for the high concentration of ***(LT_(50)= 44.629 h) at the conidial exposure of 1 × 10~6 spores/*** mortality of the bed bugs was observed from Day 6 to Day 12, ranging from 13% to 90% in all three concentrations of *** reference to the *** exposure, the concentration of 1 × 10~4 spores/mL displayed a gradual increase in the percentage mortality of 90 on Day ***: Approaches to the bed bugs treatment should be explored in-depth using a natural biological agent like fungus especially *** to reduce this pest population, in order to replace chemical methods.

关键词： Tropical bed bug Mycoparasitic fungi Aspergillus tubingensis Trichoderma harzianum Bio-control

The biology and demographic parameters of Aedes albopictus in northern peninsular Malaysia

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Asian Pacific Journal of Tropical Biomedicine 2011年第6期1卷 472-477页

作者： H Nur Aida Hamady Dieng Abu Hassan Ahmad Tomomitsu satho AT Nurita MR Che Salmah Fumio Miake B Norasmah Medical Entomology Laboratory School of Biological SciencesUniversiti Sains Malaysia Faculty of Pharmaceutical Sciences Fukuoka University

Objective:To generate life table characteristics for the dengue vector Aedes albopictus(A. albopictus) under uncontrolled conditions,incorporating both the aquatic and the adult stages. Methods:Ten females derived from wild pupae were allowed to fully blood-feed on restrained mice.774 eggs were hatched in seasoned water.F1 larvae were followed for development until their F2 counterparts emerged as *** population parameters were monitored(Fl) or estimated(F2).Results:*** exhibited increased fecundity and egg hatch success. Immature development was *** survival was high,with lowest rate in the pupal *** emergence was about 81%and sex ratio was close to 1:*** mortality(K) was about 28%.A high proportion of females completed a reproductive cycle and the obtained parity rate was predicted to lead to higher fecundity in the next ***:It can be concluded that natural *** populations in Penang seem largely determined by quick development in combination with low immature loss and increased oviposition.

关键词： Aedes albopictus Biology Population parameters Life table Life budget

Morphological and molecular characterization of fungus isolated from tropical bed bugs in Northern Peninsular Malaysia, Cimex hemipterus(Hemiptera: Cimicidae)

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Asian Pacific Journal of Tropical Biomedicine 2015年第9期5卷 684-690页

作者： Abdul Hafiz Ab Majid Zulaikha Zahran Abd Hafis Abd Rahim Nor Azliza Ismail Wardah Abdul Rahman Kartiekasari Syahidda Mohammad Zubairi Hamady Dieng Tomomitsu satho Household and Structural Urban Entomology Laboratory School of Biological Sciences Universiti Sains Malaysia Plant Pathology Laboratory School of Biological Sciences Universiti Sains Malaysia Institute of Biodiversity and Environmental Conservation Universiti Malaysia Sarawak Department of Microbiology Faculty of Pharmaceutical Sciences Fukuoka University

Objective:To investigate some morphological and molecular characteristics of fungal parasites isolated from wild tropical bed bug, Cimex ***: A series of culture methods were used to obtain fungal isolates from i eld-collected bed bugs. Characteristics of the isolates such as colony appearance, mycelial texture and pigmentation were studied to explore their morphology. Isolates were also subjected to a PCRbased genotyping ***: There were noticeable dif erences in morphological characteristics among the four isolates. Conidial areas of one isolate were dark green, whereas those of the remaining colonies were olive-green, black or dark brown. Conidia of the dark green isolate were globose, while those of olive-green, black and dark brown isolates were globose to subglobose, globose to spherical and globose to subglobose/i nely roughened, respectively. These morphological specii cities and the molecular analyses showed that the fungal internal transcribed spacer ribosomal region and β-tubulin gene sequences of the isolates shared clade with Trichoderma and Aspergillus ***: Overall, the new discovery of common pathogens in agricultural i eld developed in live bed bugs storage tank may initiate the use of biological agents in later years.

关键词： Cimex hemipterus Aspergillus Trichoderma β-tubulin Internal transcribed spacer Morphological characteristics

Unusual developing sites of dengue vectors and potential epidemiological implications

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Asian Pacific Journal of Tropical Biomedicine 2012年第3期2卷 228-232页

作者： Hamady Dieng Rahman GM Saifur Abu Hassan Ahmad MR Che Salmah Al Thbiani Aziz Tomomitsu satho Fumio Miake Zairi Jaal Sazaly Abubakar Ronald Enrique Morales School of Biological Sciences Universiti Sains Malaysia Faculty of Pharmaceutical Sciences Fukuoka University Department of Medical Microbiology University of Malaya Faculty of Tropical Medicine Mahidol University

Objective:To identify the unusual breeding sites of two dengue vectors,*** albopiclus(***) and Aedes aegypti(***).Methods:During the second half of 2010, we performed an occasional survey in rural(Teluk Tempoyak) and urban(Gelugor) areas of Penang Island,Malaysia,to identify cryptic breeding ***:In the rural area,we found heterogeneous immature stages of *** in the water bowl of an encaged *** also observed *** eggs deposited in the flush tank of a toilet in the urban ***: It can be concluded that both breeding patterns can increase contact with hosts(humans and birds) and presumably population densities of *** and ***,thereby potentially boosting the risks for spread and transmission of arboviral diseases.

关键词： Breeding sites Aedes albopictus Bird Aedes aegypti Toilet Epidemiological implications

Seasonal Changes in Mayfly Communities and Abundance in Relation to Water Physicochemistry in Two Rivers at Different Elevations in Northern Peninsular Malaysia

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湿地科学 2011年第3期9卷 240-250页

作者： Suhaila Abdul Hamid Mohd Ravi Che Salmah Hamady Dieng Abu Hassan Ahmad Tomomitsu satho Fumio Miake School of Biological Sciences Universiti Sains Malaysia Faculty of Pharmaceutical Sciences Fukuoka University

A field study was performed at rivers in Gunung Jerai forest reserve(Kedah,Malaysia) to assess seasonal changes in mayfly community structure and abundance in relation to altitude and water *** at lower(Batu Hampar River) and higher(Teroi River) elevations were visited through dry and wet seasons in September 2007 to August *** visits were made to 20 sites on each river,and water and aquatic insects were sampled using D-pond aquatic *** was warmer,more acid,and more turbid in Teroi River during wet *** was the only nutrient exhibiting significant seasonal variations(greater during wet season).Chemical oxygen demand content was higher in Teroi River where biochemical oxygen demand content was low during wet *** richness was higher in Batu Hampar River,but displayed seasonal variations only in Teroi *** the eight families encountered,Baetidae was the *** abundance was usually high during wet season,and those belonging to the dominant genus(Baetis) were more abundant in Teroi *** was the second commonest family;its predominant genus,Thalerospyrus was more abundant in Teroi River during dry ***,Leptophlebiidae and Oligoneuriidae were only found in Batu Hampar River where their abundances peaked during dry season,i.e.,Habrophlebiodes *** Isonychia *** and Teloganodidae occurred only in Teroi River,with the first found only during dry *** were recorded under very distinct physicochemical conditions,illustrating their potential usefulness for assessing water ***,leptophlebids,oligoneurids ephemerellids and teloganodids seem to be particularly sensitive to temperature,acidity,turbidity,chemical oxygen demand and biochemical oxygen demand,parameters that varied with river altitude.

关键词： river ephemeroptera abundance altitude season physicochemistry

Household survey of container-breeding mosquitoes and climatic factors influencing the prevalence of Aedes aegypti(Diptera:Culicidae)in Makkah City,Saudi Arabia

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Asian Pacific Journal of Tropical Biomedicine 2012年第11期2卷 849-857页

作者： Al Thabiany Aziz Hamady Dieng Abu Hassan Ahmad Jazem A Mahyoub Abdulhafis M Turkistani Hatabbi Mesed Salah Koshike Tomomitsu satho MR Che Salmah Hamdan Ahmad Wan Fatma Zuharah Ahmad Saad Ramli Fumio Miake Medical Entomology Laboratory School of Biological SciencesUniversiti Sains Malaysia Department of Biological Science King Abdul-Aziz University Ministry of Health Kingdom of Saudi Arabia Ministry of Municipal Saudi Arabia Faculty of Pharmaceutical Sciences Fukuoka University

Objective:To investigate the prevalence of container breeding mosquitoes with emphasis on the seasonality and larval habitats of Aedes aegypti(***) in Makkah City,adjoining an environmental monitoring and dengue ***:Monthly visits were performed between April 2008 and March 2009 to randomly selected *** each visit,mosquito larvae were collected from indoors and outdoors containers by either dipping or pipetting. Mosquitoes were morphologically *** on temperature,relative humidity,rain/ precipitations during the survey period was retrieved from governmental sources and analyzed. Results:The city was warmer in dry season(DS) than wet season(WS).No rain occurred at all during DS and even precipitations did fall,wetting events were much greaterduring *** survey revealed the co-breeding of Aedes,Culex and Anopheles in a variety of artificial containers in and around homes.32109 larvae representing 1st,2nd,3rd,and 4th stages were collected from 22618 container *** was far the commonest and Aedes genus was as numerous as the Culex *** larval abundance exhibited marked temporal variations,overall, being usually more abundant during *** types of artificial containers were found with developing larvae.70%of these habitats were located indoors.71.42%of indoor containers were permanent and 28.58* was semi-permanent during *** tanks was the only container type permanent during *** larval indices(CI,HI,Bl) recorded were greater during WS. Conclusions:Taken together,these results indicate a high risk of dengue transmission in the holy city.

关键词： Aedes aegypti Larval indices Environmental factors Dengue incidence