Browsing by Author "Malaka, S. L. O."
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Item Quality evaluation of some honey samples from Lagos Nigeria(JTB, 2005) Fasasi, K. A.; Malaka, S. L. O.; Amund, Olukayode O.The quality of five samples of honey obtained from research bee farm (University of Lagos) and Tejuoso market, Lagos, was evaluated. 80 % of the samples exhibited proper maturity based on the low moisture content (17.20 + 0.43 %). The ash contents were within the limit allowed for floral honey (0.6%) and indicating the cleanliness of honey samples. Low hydroxymethylfurfural content (8.49 + 2.67 mg kg-l) and high diastase activity (18.62 + 3.83Go) indicated high level of freshness. The total acidity which was below 40 meq kg-l indicated absence of undesirable fermentation, while the pH (3.87 + 0.20) was within the recommended value. The Glucose, fructose and sucrose contents were 26.80 + 3.96 %, 38.88 + 0.83% and 1.59 + 0.63% respectively.Item Studies on the life cycle and morphometrics of honeybees, Apis Mellifera adansonii (Hymenoptera: Apidae) in a Mangrove Area of Lagos, Nigeria(Faculty of Science, Obafemi Awolowo University, 2011) Fasasi, K. A.; Malaka, S. L. O.; Amund, Olukayode O.The life cycle of the honeybee, Apis mellifera adansonii, was studied in mangrove area by monitoring the developmental stages and morphology of the castes. It was observed that the fate of the eggs were predetermined at the onset leading to drones, queens or workers. It was also established that the three different castes (drone, queen and worker) exhibit similar patterns of complete metamorphoses. The mean developmental period of the drone from egg to adult stage was the longest (24.97±1.77 days, n = 60) followed by that of worker (20.22 ± 2.20 days, n = 60) and the queen (15.5 ± 2.08 days, n = 60) in that order. The body length and head capsule width varied within the different castes. The general pattern of the studied life cycle of A.mellifera adansonii in Mangrove area of Lagos is similar to A. mellifera scutellata and Africanized A. mellifera studied in other regions. It was concluded that the knowledge of the life cycle of A. mellifera adansonii by bee farmers in their locality may enhance their apicultural practices for better productivity.Item A study of bacteria from the digestive system of two advanced termites (Isoptera, Termitidae) in Nigeria(1986) Amund, Olukayode O.; Yakubu, O. S.; Malaka, S. L. O.1. The total heterotrophic counts of bacteria present in the digestive system of Macrotermes bellicosus Smeathman and Amitermes evuncifer Silvestri were carried out. 2. The populations of bacteria in the guts of workers were generally higher than in those of soldiers. 3. A total of nineteen bacterial strains belonging to four main genera, namely Cytophaga, Micrococcus, Bacillus and Sarcina were isolated; six of these organisms were capable of producing cellulose-digesting enzymes. 4. The possible role of these cellulolytic bacteria in termite nutrition was discussed.Item A study of Microbial composition and Lignocellulose degradation in the mound soil of Macrotermes bellicosus Smeathman.(1998) Amund, Olukayode O.; Onumonu, M. N.; Onawale, T. A.; Malaka, S. L. O.Mound soil samples of Macrotermes bellicosus Smeathman and the adjacent soils were examined for total heterotrophic bacteria, yeasts, moulds, actinomycetes, nitrogen fixers and cellulose decomposers. There were higher populations of the various microbial groups in the mound soil than in the adjacent soils with the exception of yeasts. In the mound soil were Klebsiella, Micrococcus, Aeromonas, Flavobacterium, and Bacillus. The yeasts were Candida, Rhodororula and Torulopsis, whilst the moulds were capable of utilizing lignin and cellulosic substrates for growth with the production of cellulolytic enzymes. Growth of Aspergillus oryzae and Mycelia sterilia on wood dust resulted in substantial weight loss, carbohydrate and lignin depletion of the wood residues. The significance of fungal delignification in relation to termite nutrition is emphasized and discussed.Item Sugar syrup as substitute for nectar: Effect on production and density of the honey bee Apis mellifera Adansonii (Hymenoptera: Apiidae) in artificial beehive(2007) Fasasi, K. A.; Malaka, S. L. O.; Amund, Olukayode O.The effect of sugar syrup on colonies of Apis mellifera Adansonii (Hymenoptera: Apidae), in an apiary at University of Lagos, was studied and the colonies were monitored between Nov. 2001 and Oct. 2003. During this period, sugar syrup was administered as nectar substitute to Colonies A and B colonies C and D which lacked sugar syrup served as controls. In the 1st dry season (Nov.2001 – Apr. 2002), the production of colonies A and B were 35.0 kg and 30.5 kg and their population densities were 24,610 and 22,727 respectively, while the production of colonies C and D were 37.0 kg and 40.5 kg and the population densities were 27,040 and 29,790 respectively. In the 1st wet season (May 2002–Oct. 2002), colonies A and B weighed 24.5 kg and 22.5 kg, respectively, while their population densities were 25,360 and 23,810 respectively, Colonies C and D weighed 22.5 kg and 24.0 kg and their population densities were 15,846 and 22,500, respectively. Colonies A and B weighed 42.5 kg and 39.0 kg and had population density of 34,770 and 33,240 respectively in the 2nd dry season (Nov. 2002) – Apr. 2003). Colonies C and D had comparatively lower production (29.5 kg and 35.5 kg) and population densities (25,592 and 31,634 respectively). This study showed that administration of sugar syrup to colonies of A. mellifera Adansonii in wet season sustained more population of bees for foraging activities in the 2nd dry season. This significantly increases population and production in colonies A and B in the 2nd dry season.