Journal of Entomology and Zoology Studies
ISSN / EISSN : 2349-6800 / 2320-7078
Published by: AkiNik Publications (10.22271)
Total articles ≅ 462
Latest articles in this journal
Journal of Entomology and Zoology Studies, Volume 10, pp 13-19; https://doi.org/10.22271/j.ento.2022.v10.i2a.8962
Herbivory by Spodoptera litura (F) larvae stimulate the production of induced defense in chili plants as a defense response. The induced defense response of the plant causes change in the secondary metabolites. The present study was conducted hypothesizing the role of pest induced defense in inhibiting the successive invading pathogens (Cross-resistance) in chili plants. Bioassay studies were conducted to test our hypothesis and observed herbivory significantly reduced invasion of the bacterial pathogen, Xanthomonas campestris pv. Vesicatoria. As the phenolic acids in the plants are known to possess antimicrobial properties we presumed the role of S. litura induced phenols in inhibiting the bacterial growth in chili plants as well. An in vitro agar dilution assay was conducted to identify the effective phenolic compound with antimicrobial nature by evaluating the minimum inhibitory concentrations. Overall, syringic acid was found to be effective in inhibiting X. campestris pv. vesicatoria growth, as indicated by low minimum inhibitory concentrations (MICs). The results indicate the cross-resistance role of herbivory induced secondary metabolites.
Journal of Entomology and Zoology Studies, Volume 10, pp 135-138; https://doi.org/10.22271/j.ento.2022.v10.i2b.8981
The present study was carried out to prepare checklist of birds of two water bodies of Belagavi Taluka, Belagavi District, and Karnataka. 35 species belonging to 28 families and 13 orders have been recorded from in and around the water bodies. Out of 13 orders, Passeriformes were recorded as dominant order with 38%. Of the 35 species, insectivorous occupy highest number of 29%. The result indicates moderate yet significant species diversity in the study area.
Journal of Entomology and Zoology Studies, Volume 10, pp 115-117; https://doi.org/10.22271/j.ento.2022.v10.i2b.8976
Two cats were presented to Teaching Veterinary Clinical Complex, Mannuthy with complaint of rectal prolapse from past two days. Presented animals were weak and emaciated. On abdominal palpation a small sausage shaped structure could be palpated and the animal exhibited pain on palpation. Due to the oedema of the prolapsed mass it could not be reduced into normal position. The ultrasonographic examination of the abdomen produced a target sign suggestive that the condition was intussusception. Decided to correct the condition surgically. Opened the abdominal cavity through the Linea alba and exteriorized the affected portion from remaining segments. Manually reduced the affected portion under general anaesthesia. Closed the abdominal cavity and skin incision as per the standard manner. Animals were exhibited successful recovery.
Journal of Entomology and Zoology Studies, Volume 10, pp 110-114; https://doi.org/10.22271/j.ento.2022.v10.i2b.8972
An inventory of species diversity of insects of the Mukundpur Tiger Reserve, Satna (M.P.). Small insects with soft body were collected by hand with the help of a fine camel hair brush and forceps, and then preserved in 70% alcohol by dipping the soft brush in to the medium. Sweeping nets were used to collect the insect from plants. A long stick was used for beating the plants harboring insects. A big size cloth spread over the ground to collect the falling insects. Total recorded aquatic insect sp. distribution was expressed in higher to lower order as Coleoptera (36), Hemiptera (22), Odonata (11), Diptera (6), Ephereoptera (4), and Trichoptera (2). Aquatic insect Order as per the comparative evaluation Coleoptera was found in utmost count compared through Hemiptera, Odonata, Diptera, Ephemeroptera, and Trichoptera. The order Coleoptera consist (45%), Hemiptera (27.16%), Odonata (13.58%), Diptera (7.40%), Ephereoptera (4.90%), and Trichoptera (2.46%) from observed aquatic insect species. MKPTSR is a well-distinguished place intended for the affluence of coleopteran fauna.
Journal of Entomology and Zoology Studies, Volume 10, pp 51-56; https://doi.org/10.22271/j.ento.2022.v10.i2a.8975
Considering the pollution and resistance of chemical insecticides in Anopheles gambiae S.L., alternative control approaches have led to this study. Larvicidal activities of the leaves of Lantana camara, Bougainvillea spectabilis and Tephrosia villosa against the fourth instar larvae of Anopheles gambiae S.L. were evaluated. The susceptibility level and the homogeneity of wild strains were determined according to the method of Sinègre. The highest mortality rates were obtained from 15mg/ml with Lantana camara and Bougainvillea spectabilis. The larvicidal activity of Lantana camara on the wild strains was higher than Bougainvillea spectabilis. These wild strains have the same sensitivity as well as the KISUMU strain towards Bougainvillea spectabilis and Lantana camara. However, the wild population response to aqueous extracts was homogeneous against Bougainvillea spectabilis and heterogeneous against Lantana camara. Lantana camara and Bougainvillea spectabilis leaves were the most active aqueous extract on larvae of Anopheles gambiae S.L.
Journal of Entomology and Zoology Studies, Volume 10, pp 48-50; https://doi.org/10.22271/j.ento.2022.v10.i2a.8974
Betel nut (Areca catechu) is an important cash crop in Bangladesh and several insect pests’ causes severe damage but study related to insect pests of betel nut is scanty in the country. Then the study was carried out scientifically to document the information of insect pests attacking betel nut in southern region of Bangladesh. The productivity of these palms is affected by number of insect pests. Among them a new pest Inflorescence caterpillar or Oil palm bunch moth or Coconut spike moth: Tirathaba rufivena (Lepidoptera: Pyralidae) is first recorded in Bangladesh during 2020 which causes damage to inflorescence and developing nuts resulting considerably yield loss. Inflorescence caterpillar T. rufivena is differentiated from other species based on the front wing color. The front wing color of T. rufivena is grayish other species like T. mundella is greenish. It is also recorded that the seasonal average percent infestation of developing nuts was 19.44-21.45% in southern part of Bangladesh. Therefore more research should be undertaken to assess crop loss by this pest and to develop appropriate management option. This is the first record of Tirathaba rufivena on betel nut in Bangladesh.
Journal of Entomology and Zoology Studies, Volume 10, pp 28-35; https://doi.org/10.22271/j.ento.2022.v10.i2a.8967
This study was carried out in two oases located in the south-west of Tunisia to investigate the efficacy of the oophagous parasitoid Trichogramma cacoeciae against Ectomyelois ceratoniae on date palm trees. The first oasis (Hezoua) is characterized by a cropping system divided into three levels of cultures. In the second oasis (Douz), orchards were based on the monoculture of the Deglet Noor cultivar. Parasitoids were released with three doses 26,000, 36,000 and 46,000 Trichogramma/ha. The impact of Trichogramma releases was evaluated by monitoring the egg parasitism, male catches of E. ceratoniae through pheromone traps, fruit damage during the whole season and fruit infestation at harvest. Trichogramma cacoeciae accomplished higher egg parasitism in Hezoua oasis (19.71 ± 1.02%) as compared to Douz oasis (8.43± 1.03%). Inundative releases of T. cacoeciae in the two oases resulted in varying degrees of pest control and they were not sufficient to limit economic losses.
Journal of Entomology and Zoology Studies, Volume 10, pp 36-42; https://doi.org/10.22271/j.ento.2022.v10.i2a.8968
The use of synthetic insecticides to control stored product insects causes various health and Ecological challenges to man. Therefore, there is a need for alternative formulations like plant materials with the least possible side effects for the effective control of cowpea bruchid, Callosobruchus maculatus (Fabricius), a cosmopolitan pest of pulses. This study evaluated the efficacy of insecticidal dust formulations using three botanicals (Piper guineense, Dennettia tripetala and Ocimum gratissimum), three excipients (rice bran, maize husk and cowpea pod husk), admixed at ratios 70:30, 60:40, 50:50, 40:60 and 30:70 botanical to an excipient, for the control of C. maculatus. Four particle sizes (212, 300, 500 and 1000 µm) applied at dosages of 0.1- 0.5 g / 20 g cowpea seeds were assayed and untreated cowpea seeds served as controls. Ten C. maculatus adults (sex ratio 1:1) were used to infest the treated and untreated cowpea seeds separately in Petri dishes. Data were collected on mortality, Oviposition, F1 progeny emergence and damaged cowpea seeds. The data were subjected to analysis of variance and means were separated with Least Significant Difference at a 5% significance level. All dosage ratios of the formulated dusts caused significantly (p˂ 0.05) higher mortality of bruchids, reduced the number of laid eggs, F1 progeny emergence and damaged cowpea seeds due to C. maculatus infestation. Regardless of the assayed botanical, 212 µm particle size was outstanding and the formulation ratio of 70:30 (botanical: excipient) was significantly (p˂ 0.05) better than other formulation ratios. The formulation with P. guineense with any excipient at 0.5 g/ 20 g cowpea seeds using 212 µm was superior to other formulations as cowpea protectant against C. maculatus. Therefore, it is recommended as an alternative to over-dependence on synthetic insecticides.
Journal of Entomology and Zoology Studies, Volume 10, pp 139-143; https://doi.org/10.22271/j.ento.2022.v10.i2b.8982
Bio-efficacy assessment with four insecticides and two fungicides was carried out in Agricultural College farm, Naira during kharif, 2019 against leaf folder, stem borer, brown plant hopper (BPH) and sheath blight of rice. The treatments include four insecticides [Flonicamide 50 WG (0.4 g/l), Pymetrozine 50 WG (0.6 g/l), Chlorantraniliprole 18.5 SC (0.3 g/l), Acephate 75 SP (1.5 g/l)], two fungicides [(Difenoconazole 25 EC (0.5 ml/l), Azoxystrobin 23 EC (0.75 ml/l] and Untreated Control. Results indicated that treatment Chlorantraniliprole 18.5 SC (0.3 g/l) was effective against leaf folder (per cent leaf folder damage: 3.29) and stem borer (% DH: 1.17, % WE: 2.11) which was on par to both of its fungicide combinations viz., Azoxystrobin 23 EC (0.75 ml/l) (per cent leaf folder damage: 3.02, % DH: 1.29, % WE: 2.51) and Difenoconazole 25 EC (0.5 ml/l) (3.85, 1.76, 2.64). Against brown planthopper, treatment Pymetrozine 50 WG + Difenoconazole 25 EC (0.6 g/l + 0.5 ml/l) (reduction over control- 92.95%) was effective and pertinent to sheath blight, treatment chlorantraniliprole + azoxystrobin (PDI: 5.14) along with all the four test insecticide combinations of azoxystrobin proved their best.
Journal of Entomology and Zoology Studies, Volume 10, pp 206-211; https://doi.org/10.22271/j.ento.2022.v10.i2c.8990
A field survey was conducted in the cocoa growing states in Southwest Nigeria in the 2017/2018 year with the objective of assessing the incidence and intensity of diseases and pests affecting cocoa farms in the region. Data were collected by random sampling of 100 trees on three farms in three local government areas of each state. The trees were screened for the presence or absence of insect pests, disease symptoms, parasitic and saprophytic weeds. All the data generated were analyzed using simple descriptive statistics of their various means and reported in percentages. Black pod and the cocoa swollen shoot virus (CSSV) are the primary disease affecting the region with black pod being very severe (51.56%). Major insect pests in the region are cocoa mirid (11.44%), termites (13.16%) and the pod husk borer (7.46%). Mistletoes and moss weed pests were recorded in the region. Management strategies to control the pest and to prevent the transportation of the pest and/or disease material into a state of low incidence should be developed.