Research Papers/Topics in Zoology

Insects Associated With Citronella In South-Eastern Ghana, With Particular Reference To ShootborersInsects Associated With Citronella In South-Eastern Ghana, With Particular Reference To Shoo

ABSTRACT Insects associated with citronella were surveyed in the south-eastern part of Ghana for 11 months. Using two different sweep nets, intensive and extensive surveys showed that the foliage of citronella was associated with a diverse insect fauna comprising 10 orders and 102 families as follows: Hymenoptera (29), Diptera (32), Homoptera (8), Hemiptera (12), Coleoptera (10), Dictyoptera (2), Orthoptera (3), Lepidoptera (2), Dermaptera (1), and Neuroptera (3). The shoot of citronel...

Identification and field evaluation of bioactive natural products for use in schistosome host snail traps

ABSTRACT The behavioural responses o f two schistosom e host snails (Bitlinus Iruncattts and Biomphalaria pfeifferi) to tw enty-six naturally occurring (crude and sem i-processed) products weic measured in diffusion olfactom eters. 15 out o f these 26 m aterials (i.e. 57% ) were found to act as statistically significant attractants for adult 13. pfeifferi w hile only 5 (19%) o f the lest materials clicited statistically significant responses from the adults o f B. truncatus. The juv...

Studies On Genetic Mutations In Plasmodium Falciparum Strains Associated With 4- Aminoquinolines (Chloroquine) And Pyrimethamine-sulphadoxine (Fansidar) Resistance In Ghanaian Malaria Patient

The malaria drug policy for Ghana is chloroquine, Fansidar and quinine as the first line, second line and third line drugs respectively. However, the burden o f malaria has been complicated by the emergence of resistance especially to chloroquine, which is a cheap and effective drug. It has therefore become imperative that the levels o f resistance o f Plasmodium falciparum to anti-malarial drugs (chloroquine and Fansidar) in Ghana be established and the information u...

IN VITRO EFFECTS OF NATURAL COCOA EXTRACT ON ERYTHROCYTE MEMBRANE AND ASEXUAL ERYTHROCYTIC STAGE OF PLASMODIUM FALCIPARUM

Malaria remains a life-threatening disease in the tropical and sub-tropical world, affecting mostly children and pregnant women. One of the biggest threats to malaria control is the ability of the causative parasite to develop resistance to anti-malarials and how quickly the resistance spreads. This makes it necessary for further research to discover new anti-malarial drugs. Plant products offer a great promise in this direction. This study tested the anti-plasmodial ...

Biology Of Some Oxycarenus Species (Heteroptera: Lygaeidae) In Southern Ghana

A B S T R A C TThe b io lo g y o f th r e e s p e c ie s o f Oxycarenus found inSouthern Ghana has been s tu d ied . T h e i r h o s t p la n t s arel i s t e d and host p r e fe r en c e s examined. The sea sonal p opula tio n changes o f two s p e c ie s have been fo l low e d . The n a tu ra lenemies and d e fen s iv e mechanisms have been s tu d ie d . Ad e t a i l e d d e s c r ip t io n o f the immature s ta g e s o f the th r e eOxycarenus sp e c ie s has been g iv en f o r th e f i r ...

Distribution Patterns Dispersal And Population Genetics of Anopheline Mosquitoes Along The Kenyan Coast

ABSTRACT Studies on the distribution patterns, dispersal and population genetics of Anopheles gambiae (Diptera: Culicidae) and Anopheles funestus (Diptera: Culicidae) were conducted at two sites, i.e Jaribuni and Mtepeni in Kilifi, along the Kenyan Coast. Longitudinal sampling of mosquito populations was conducted during the period 2002 - 2003. Day resting indoor collections and all night human biting catches revealed the presence of An. funestus, An. gambiae s.s, An. squamosus, An. cou...

Molecular Characteristics And Immuno-Epidemiology of Plasm Odium Falciparum Infections in School Children at Dodowa

AbstractMalaria is a mosquito-borne protozoal disease caused by species o f the genus Plasmodium. It is characterised by acute febrile illness which may be expressed as periodic paroxysms occurring every' 48 or 72 hours with afebrile and relatively asymptomatic intervals and the tendency to recrudesce or relapse over a period of months to many years (Gilles and Warrel. 1993). Other major symptoms of malaria are rigors/chills, vomiting, convulsion, headache, drowsiness and muscleskeletal ...

A Review of the Nilothauma pictipenne Group And a Description of Four New Afrotropical Species of Nilothauma Kieffer, 1921 (Diptera: Chironomidae: Chironominae)

ABSTRACT A revised generic diagnosis of the genus Nilothauma Kieffer, 1921a, is given. Four new Afrotropical species, N. loba sp. n., N. tricaudata sp. n., N. flabella sp. n., and N. insolita sp. n., are described as male imagines. N. pictipenne Kieffer, 1921a is redescribed as male and female imagines. Two Neotropical species (N. aleta Roback,1960 and N. Buena Roback, 1960) are regarded as nominal dubia and placed in Paratendipes. A key to male imagines of the Nilothauma pictipenne gr...

Biology Of Cowpea Flower Thrips And Host Plant Resistance

ABSTRACTBiology of cowpea flower thrips Megalurothrips sjostedti, wasstudied under field conditions.Population studies showed that the trend of thrips populationswas closely tied with the flowering cycle of the cowpea crop.Peak thrips populations coincided with peak flowering of the crop.The seasonal abundance of thrips was mainly governed by weatherfactors. Thrips were found to oviposit mainly in the calyx ofthe cowpea flower.Evaluation of different sampling methods for thrips oncowpea indic...

Transmission Of Human And Animal Onchocerciasis And Molecular Diagnosis Of Onchocerca Species In Some Ghanaian Communities

ABSTRACT Control of onchocerciasis over the past 3 decades has brought great relief to millions of people living in endemic communities, by substantially reducing blindness and other dermatological lesions. However, there are still areas where infections in human populations are high and vector transmission is ongoing, requiring a further understanding into the transmission dynamics of the disease in such communities. Furthermore the status of animal onchocerciasis is still unknown ...

Evaluating The Prevalence And Transmission Of Lymphatic Filariasis In Two Rural Communities In The Western Region After Ten Rounds Of Mass Drug Administration

ABSTRACTControl of lymphatic filariasis (LF) in Ghana is based on annual mass drug administration (MDA) with a combination of ivermectin and albendazole, in order to halt transmission. It is expected that 5-6 rounds of MDA should result in the interruption of transmission. This research present findings from a study in two endemic rural communities in Western Ghana, after ten rounds of MDA. The study was conducted in Agona Princess and Akonu in the Ahanta West District and Nzema East Municipa...

Toxicities And Sedative Effects Of Toloache, Datura Innoxia Miller, On The African Catfish Clarias Gariepinus Burchell, Fingerlings

ABSTRACTStudies on toxicological and sedative effects of Datura innoxia plant parts (leaf, seed, stem, pod and root) on Clarias gariepinus fingerlings were conducted under laboratory conditions using the static bioassays and continuous aeration. The aim was to develop an effective anaesthetic from an indigenous plant material that will be available at low cost to aquaculturists and which would be non-toxic to the fish and consumers. The active ingredients and their compositions in the plant p...

Characterization of Onchocerca Volvulus Response to Ivermectin Treatment And Identification of Single Nucleotide Polymorphisms Associated With These Responses in Some Onchocerciasis Endemic R

ABSTRACT In Ghana, onchocerciasis control with mass ivermectin treatment began in 1987. Despite over two decades of interventions, the disease remains persistent with reports of sub-optimal/poor parasite responses to the drug. Some treated patients are observed with higher microfilarial repopulation rates in skin than expected, an indication of sub-optimal response. Although ivermectin is still effective in reducing microfilaridermias, it is uncertain if its embryostatic effect has been...

Parasitological Responses of Onchocerca Volvulus to Ivermectin Treatment And Genetic Analysis of Beta Tubulin Gene

ABSTRACT            Ivermectin (IVM) still remains the only safe drug for the mass control of onchocerciasis, and the continued success of the control programmes depends on its efficacy. However, recent reports show that there are populations of adult Onchocerca volvulus responding suboptimally to IVM. This requires assessment of parasitological response profile of O. volvulus to IVM and genetic analysis of Beta-tubulin gene known to be associated with IVM se...

Prevalence of Avian Malaria in Some Protected Areas in Ghana

ABSTRACT Differences in habitat types affect host-parasite interactions and can increase the risk of epizootic outbreaks in wild populations. It is thought that parasitism is a necessary factor in conservation biology and is important in understanding ecological parasitology and vertebrate conservation management. The aim of this study was to estimate the prevalence of avian malaria in forest and savanna birds. A total of 132 birds of 39 species belonging to 20 families were trapped in ...


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