Objective:The objective was to evaluate the effects of foliar application of Jatropha and neem aqueous extracts compared to a conventional insecticide treatment on the number of whitefly Bemisia tabaci (Gennadius) and bollworm Helicoverpa armigera (Hübner), yield of tomatoes in plots and the potentials of using any of these aqueous extracts to control these insect pests. Methodology and results: the study was conducted in the region of Moronou (Bongouanou, Koffikro, CBC Kangandissou). The insecticides Décis 12 EC® and Cypercal 50 EC®, and neem and jatropha aqueous extract were used for tomato foliar treatment (neem and jatropha seeds 80 and 50g/L, neem leaves 67 g/L). The treatments of tomato plant plots with pesticides Decis® and Cypercal® showed similar yields of biopestcide made of neem and jatropha in Ahorosso (P=0.00), Bongouanou (P=0.07) and CBC Kangandissou (P=0.01) plots. All of these treatments reduced the number of Bemisia tabaci adults, reduced the number of Helicoverpa armigera larvae on tomato plants and increased number of fruits per plant, the fruit weight per plant and the yield. Conclusion and application of findings: Statistical analysis shows that aqueous extract of jatropha and neem seed 80 g/L and 50 g/L, and of neem leaves 67 g/L are as effective as pesticides Décis® and Cypercal® on Bemisia tabaci and Helicoverpa armigera. Consequently, these biopesticides increased the number of fruits per plant and yield. This result should enable use of aqueous extract of neem and jatropha seed and of neem leaves to protect tomato plants against Bemisia tabaci and Helicoverpa armigera at farm.

Termites are becoming economic pests because of their appetite for wood and wood products in human dwellings and building materials. The objective of this study is to assess the impact of these insects on the activities of public services in the city of Korhogo, located in the north of Côte d'Ivoire. Termite attacks was investigated in 3 public services of the city. A survey was conducted to identify the control methods used against these pests. The results showed that termite pests represent a real problem. A total of 7 species of termites responsible for attacks were collected. These species belong to the wood-feeders, fungus-growers and grass-feeders group. The fungus-growers are the most involved in the observed attacks. Pseudacanthotermes militaris, which was involved in 54% of the attacks, was the most dangerous species. Termite attacks and damages were observed on doors, wooden shelves, ceilings, birth and marriage records. Surveys reveal that only chemical control is used in these services to control termites. A total of four pesticides were used to control termites in the three services visited. These were Cypercal 50 EC, K-Othrine® SC25, Actellic® 50 EC and Furadan 3G. Unfortunately, these products appear to be ineffective in some services. It is therefore important to take more effective and environmentally friendly measures to limit the impact of these insects on the activities of the public administrations of the town of Korhogo.

This study was conducted at the ENS vivarium located at the UFHB of Cocody in the city of Abidjan in the south of Ivory Coast, with a temperature of about 28° C and a humidity of about 70%. It aimed to study some biological parameters of the black soldier fly Hermetia illucens. For achieve this goal, it was a question of studying the different stages of development of the black soldier fly and also studying the evolution of its growth parameters. The flies were captured, kept in an aviary and observed from the fly stage to the end of the pupal stage (emergence of the first flies). Data on the duration of the different stages of development and the evolution of larval growth parameters (average weight, length, width, Fulton index, length/width ratio, survival and mortality rate of larvae) have been taken. This study revealed that the life cycle of Hermetia illucens is between 31 and 43 days, with an incubation time of eggs that lasts 2 days, a larval phase of 14 days, a pupation of 10 days and a duration of adult life of 8 days on average. In addition, this study reports a low mortality rate of larvae (3.45%), larvae much longer (19.46 mm), wider (6 mm) and plumper.

Termites play an important ecological role. The objective of this work is to evaluate the diversity of termites in two different ecosystems (primary forest and horticultural forest) of the Partial Dalhia Fleurs Natural Reserve (DFNR) In each ecosystem, three transects were carried out using the standardized rapid termite assessment method. A total of 20 species of termites were sampled. In the primary forest, 18 species were sampled and 16 species in the horticultural forest. These species belong to two families which are the Termitidae with 17 species and the Rhinotermitinae. These termites were Macrotermes subhyalinus, Macrotermes bellicosus, Acanthotermes sp, Odontotermes sp, Ancistrotermes guineensis, Microtermes sp, Microtermes sp2, Procubitermes sp, Protermes sp, Pericapritermes sp, Microcerotermes parvus, Amphidotermes sp, Cubitermes fungifaber, Noditermes sp, Apilitermes sp, Amitermes guineensis and Trinervitermes sp.  The second family was that of Rhinotermitidae with 3 species namely Coptotermes intermedius, Coptotermes sjöstedti and Schedorhinotermes lamanianus. Thus, the Dalhia Fleur Nature Reserve abounds in a significant wealth of termitic fauna. It is therefore important to protect it further.