Bangladesh j. entomol. (2008) 18(2), 1-10
EFFECT OF DIFFERENT ARTIFICIAL ADULT DIETS ON EGG PRODUCTION, INGESTION AND LONGEVITY OF THE MELON FLY, BACTROCERA CUCURBITAE (COQUILLETT) (DIPTERA: TEPHRITIDAE)
M. ABDUL ALIM1, MAHFUZA KHAN2*, M. SAIDUL ISLAM2 &
1Dept. of Zoology, National University, Gazipur;
2Insect Biotechnology Division, Institute of Food and Radiation Biology,
Atomic Energy Research Establishment, Savar, Dhaka;
3Dept. of Zoology, Rajshahi University.
Eight different formulations of adult diets were tested to determine their effects on egg production of mass reared female melon fly, Bactrocera cucurbitae (Coq.) under laboratory condition. Efficiency of four selected adult diets were also studied to assess the ingestion and egg production rates and the survival of the fly species. Significantly higher egg production and shorter pre-oviposition period of B. cucurbitae was observed when they were fed on liquid diet, made of brewer’s yeast, agar, citric acid, sugar, sodium benzoate and water. The least egg production and lowest pre-oviposition period was recorded on diet made of honey: mill feed (1:1). Diet based on casein: yeast extract: sugar (1:1:2) appeared to be the most efficient adult diet compared to other three diets tested. Significantly higher survival was also recorded for B. cucurbitae feeding on this diet. Laboratory survival of the fly was lowered when fed on liquid diet.
Bangladesh j. entomol. (2008) 18(2), 11-21
APPLICATIONS OF COPPER, ZINC AND BORON IN BITTER GOURD CROP AND THEIR EFFECTS ON CUCURBIT FRUIT FLY (DIPTERA: TEPHRITIDAE) INFESTATION
M. MOHAIMINUR RAHMAN1, M. MAHMUDUNNABI2*, M. R. U. MIAH3, M. M. RAHMAN3 & A. M. AKANDA4
1Reconciliation Department, Head office, Bangladesh Krishi Bank, Motijheel, Dhaka;
2Entomology Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur;
3&4Department of Entomology & Department of Plant Pathology respectively, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh.
The effects of copper, zinc and boron applications in bitter gourd crop were studied to assess fruit fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) infestation in bitter gourd. The experiment was conducted in the experimental farm of the Department of Entomology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during February to June 2006. Three levels (50%, 100% and 200%) of three micronutrients (Copper, Zinc and Boron) were tested. Zinc applied at13.44 Kg/ha was found to reduce fruit fly infestation significantly of fruits with significant increase in yield. Boron and Copper also decreased infestation and increased the yield. Copper, Zinc and Boron had positive effects in reducing fruit fly infestation and the yield of bitter gourd. On the basis of findings, Zinc-13.44 Kg/ha (Zinc sulphate) might be considered as soil fertilizing component in IPM system for combating fruit fly on bitter gourd.
Bangladesh j. entomol. (2008) 18(2), 23-33
FIELD RESISTANCE OF DIFFERENT VARIETIES OF MUNGBEAN AGAINST INSECT PEST COMPLEX
M. S. ISLAM1, M. A. LATIF2 & M. ALI2
1Bangladesh Sugarcane Research Institute (BSRI), Ishurdi, Pabna, Bangladesh;
2Department of Entomology, Sher-e-Bangla Agricultural University,
An experiment was conducted with seven mungbean varieties viz. Barimung 2, Barimung 3, Barimung 4, Barimung 5, Barimung 6, Binamoog 2 and Binamoog 5 to evaluate their response against insect pests complex during the Kharif-I season from April to June, 2006. Whitefly (Bemisia tabaci Genn.), jassid (Empoasca kerri Pruthi), bean stemfly (Ophiomyia phaseoli Tryon), pod borer (Euchrysops cnejus Fab.) and semilooper (Diachrysia orichalcea Fab.) were found as common insect pests in all the tested varieties. Barimung 6 and Barimung 5 were tolerant to whitefly, jassid and stemfly. Binamoog 5, Barimung 6 and Barimung 5 were the most tolerant to pod borer and semilooper. In general, Barimung 5, Barimung 6 and Binamoog 5 were least susceptible to pest complex. Barimung 5 and 6 appeared to be the best varieties in terms of resistance against insect pests and yield.
Bangladesh j. entomol. (2008) 18(2), 35-41
PERFORMANCE OF FOUR NATIVE PREDATORS AT DIFFERENT PREDATOR-PREY DENSITIES IN REGULATING RICE BROWN PLANTHOPPER POPULATION
M. T. HAQUE1 & K. S. ISLAM2
1Entomology Division, Bangladesh Institute of Nuclear Agriculture,
2Department of Entomology, BAU, Mymensingh.
A study was made to evaluate the performance of some native predators for the management of brown planthopper (BPH), Nilaparvata lugens (Stål.) (Homoptera : Delphacidae), in Aus rice season during the period of May to August, 2005 at Bangladesh Institute of Nuclear Agriculture (BINA) Farm, Mymensingh. Five treatments were laid out in a RCBD utilizing Wolf spider, (Lycosa pseudoannulata), Mirid bug (Cyrtorhinus lividipennis), Carabid beetle (Ophionea indica), Ladybird beetle, Micraspis discolor and a control. The comparative evaluation indicated that the predatory spiders and insects significantly reduced the BPH population. The wolf spider showed the highest efficiency as compared to the predatory insects. Release of 3-7 wolf spiders at 40 BPH density was found to priduce the highest reduction of BPH in 4 to 5 days time. The results suggest their possible use as component of IPM of brown planthopper.
Bangladesh j. entomol. (2008) 18(2), 43-49
EFFECT OF HOST EGG STORAGE PERIOD ON PARASITISM PREFERENCE OF THREE TRICHOGRAMMA SPP.
F. MONDAL1, K.S. AHMED1, S. N. ALAM2 & M. MAHMUDUNNABI2
1Department of Entomology, Bangladesh Agricultural University,
2Entomology Division, Bangladesh Agricultural Research Institute,
Joydebpur, Gazipur, Bangladesh.
An experiment was undertaken at IPM laboratory, Entomology Division, Bangladesh Agricultural Research Institute (BARI), Gazipur, to evaluate the effect of Sitotroga cerealella stored eggs of different duration on the parasitism of Trichogramma chilonis, T. japonicum and T. evanescens. With the increase of storage period of the host eggs, the parasitism affinity reduced. A negative correlation was observed with the storage period of host eggs and percent egg parasitism and adult emergence of parasitoids from the parasitized eggs. This suggests that fresh eggs are preferred to older egges for parasitism.
Bangladesh j. entomol. (2008) 18(2), 51-60
EFFECT OF RADIATION ON MALE REPRODUCTIVE SYSTEM AND STERILIZATION OF LUCILIA CUPRINA (WIED.) (DIPTERA: CALLIPHORIDAE)
S. BEGUM, R. A. KHAN & M. Z. R. MAZUMDER1
Department of Zoology, University of Dhaka, Dhaka, Bangladesh;
1Institute of Food and Radiation Biology, Atomic Energy Research
Establishment, Savar, Dhaka, Bangladesh.
The male reproductive system of Lucilia cuprina is composed of a pair of testes, a pair of vasa deferentia, a pair of accessory glands, a median ejaculatory duct, a muscular ejaculatory sac and aedeagus. All the components of the male reproductive system showed a trend of gradual increase in size during early adult to late developmental stages. The accessory glands of late adults gradually became deformed and attained a brownish black coloration. The flies were exposed to 3.0, 3.5, 4.0 and 4.5 kr of gamma radiation, either at 2 days or 4 days-old pupal stages. The reproductive system of radiation treated adult males showed maximum deformations in their accessory glands. The hatch percentage was zero at the dose of 4.0 kr and 4.5 kr when treated at 2 days and 4 days old pupae, respectively.
Bangladesh j. entomol. (2008) 18(2), 61-68
SEASONAL ABUNDANCE AND NATURE OF DAMAGE OF CITRUS PESTS ON FIVE VARIETIES OF CITRUS
H. SHIKDAR1, M.P. ALI2, M. ASADUZZAMAN3, A.A. MAMUN4 &
1Department of Entomology, BAU, Mymensingh;
2Entomology Division, BRRI, Gazipur;
3Department of Entomology, Patuakhali Science and Technology University;
4Scientific Officer, Farm Management Division, BRRI, Gazipur
Seasonal abundance and nature of damage of different citrus pests were studied on five cultivars of Citrus namely, Sarbati lebu, Baromasi kagzi, Semi seedless elachi lebu, Seedless elachi lebu, Baromasi seedless kagzi lebu during April to August 2005. The lemon butterfly larvae fed on young leaves throughout the larval period. Citrus leaf miner larvae attacked only new flushes of tender leaves and penetrated through the epidermal layer by making irregular serpentine mine. Aphid sucked cell sap from the young parts of the plant. The adult leaf eating beetle fed on leaf tissues of the newly emerged leaf from leaf lamina to mid rib. When infestation was high, the beetle caused considerable damage to the citrus plant. The population of lemon butterfly was higher in August and lowest in May. The extent of damage was also found higher in August. The population of citrus leaf miner was higher in April and May and was lowest in the month of July. The extent of damage was also found higher in April and May respectively. The population of citrus aphid was higher in May and June and was lowest in the month of August. The population of citrus leaf eating beetle was higher in May and then fluctuated. The extent of damage in respect of leaf infestation was found higher in the month of May.
Bangladesh j. entomol. (2008) 18(2), 69-79
BANGLADESH FARMERS’ PERCEPTION OF THE STRESSES
ON RICE AND PRACTICES THEY FOLLOW FOR
STEM BORER CONTROL
MOHIBUL HASAN1, ZAHIRUL ISLAM2, MD. ZINNATUL ALAM3 & SHAHIDA SARKER PARUL4
1Entomology Division, Bangladesh Rice Research Institute, Gazipur;
261 Coleman Avenue, Toronto, Ontario M4C 1P8, Canada;
3Department of Entomology, BSMRAU, Salna, Gazipur;
4Training Division, Bangladesh Rice Research Institute, Gazipur.
In a survey carried out in Bangladesh, farmers recognized that biotic stresses were more important than abiotic. About 62.8% and 22.2% of the respondents reported that insect pests affected their aman (monsoon rice) and boro (dry season) rice yields, respectively. About 90% and 45% of the respondents said that stem borers were responsible for yield reduction in aman and boro seasons, respectively. Farmers reported fewer insect pest problems in the boro season, but more farmers applied insecticides than in the aman season. Among the insecticide users more than half used granular and less than half used foliar formulations. Carbofuran granules were used by about 79.0 % and 51.8 % foliar users applied phosphamidon. About 60.0 % banned products. Most insecticide applications made were prophylactic in nature and none of the respondents had any idea of economic thresholds. Insecticide application frequency averaged at 0.77 and 1.41 in aman and boro seasons. Pesticide dealers, extension agents and neighbours were major information sources of insecticide application. Apart from insecticides, about 45% and 31% farmers provided perches for predatory birds e.g black drongo.
Bangladesh j. entomol. (2008) 18(2), 81-89
MANAGEMENT OF THE SUBTERRANEAN TERMITE, ODONTOTERMES PROFORMOSANUS AHMED USING CARBOFURAN 5G AND ITS EFFECT ON SOIL COMPONENTS
S. BEGUM1, M. S. ISLAM1, M. MONIRUZZAMAN2, R. A. KHAN1 & P. NOOR2
1Department of Zoology, University of Dhaka, Dhaka, Bangladesh;
2BCSIR Laboratories Dhaka, Bangladesh.
The effectiveness of Carbofuran 5G in the soil for suppressing subterranean termite, Odontotermes proformosanus Ahmed and its effect on different soil components were observed using the doses of 0.01%, 0.025% , 0.25%, 0.5% and 1.0%. Hundred percent (100%) mortality was observed with the doses of 0.25%, 0.5% and 1.0%. It was found that 0.25% was an acceptable dose for suppressing O. proformosanus. There was no substantial change of pH of the soil due to the use of the pesticide. It was found that the content of organic matters (N, P, K and S) of treated termite mound soils increased with the increase of the doses and decreased with the decrease of the doses.
Bangladesh j. entomol. (2008) 18(2), 91-95
POPULATION DENSITY AND SEASONAL ABUNDANCE OF TETRANYCHUS URTICAE KOCH (ACARI: TETRANYCHIDAE) ON VEGETABLES IN RAJSHAHI, BANGLADESH
G. C. BISWAS, M. M. HAQUE1 & W. ISLAM*
Institute of Biological Sciences, University of Rajshahi, Rajshahi, Bangladesh;
1Department of Zoology, University of Rajshahi, Rajshahi, Bangladesh.
An experiment was conducted to study the population density and seasonal abundance of Tetranychus urticae Koch on five vegetable plants – Benincasa hispida, Cucurbita pepo, Cucumis melo, Luffa acutangula and Lycopersicon esculentum. The population of this spider mite was abundant but higher in the months of April– June. The density of mites correlated directly with temperature but rainfall and relative humidity exerted no significant effect. The average number of T. urticae differed significantly among the types of leaves.