Publications

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insecticide susceptibility and resistance in populations of anopheles gambiae, culex fatigans and aedes aegypti in southern nigeria. 19664380414
studies of the anopheles gambiae complex in west africa. 19675299678
further chromatographic studies of the systematic relationship within the anopheles gambiae complex; studies of laboratory strains.as serious consideration is given to initiating malaria eradication programmes in tropical africa, it becomes essential to be able to distinguish between the various species comprising the anopheles gambiae complex. at the present time, a and b species cannot be separated by conventional taxonomic methods.the chromatographic method used in the thorough statistical study reported is capable of differentiating between species of the a. gambiae complex. whereas 9 of the 10 strains studied could be ...19675299753
experiments on host selection in the anopheles gambiae complex. 19676051541
genetic studies on mutations in species a and b of the anopheles gambiae complex. 19675587938
the circadian flight activity of the mosquito anopheles gambiae: phase setting by the light régime. 19675592417
protective measures against anopheles gambiae invasion to uar. 19675605719
results of consecutive matings of female anopheles gambiae species b with fertile and sterile males. 19685649708
[presence in the southwestern part of upper volta of a population of anopheles gambiae "a" resistant to ddt]. 19685754344
egg proteins of species a and b of the anopheles gambiae complex: a pilot experiment to show fractionation by electrophoresis on cellulose acetate membrane. 19685302308
the use of coeloconic sensillae on the female antenna in differentiating the members of the anopheles gambiae giles complex. 19685303336
a theoretical model of the dynamics of an anopheles gambiae population under challenge with eggs giving rise to sterile males.an explanation is given of the probable effects of seeding a breeding place of anopheles gambiae with hybrid eggs that produce almost exclusively sterile males. for the calculations, the dynamics of an a. gambiae population in a single breeding place have been simulated in a computer programme.general considerations and implications are discussed with reference to practical applications, and the conclusion is reached that it will be feasible to eradicate the species from any breeding place only ...19695306541
the potential use of sterile hybrid males for the eradication of member species of the anopheles gambiae complex.the eradication of certain insect pests of medical importance has already been achieved in some countries by inundation of the natural populations with sterilized insects.the crossing of member species of the anopheles gambiae complex results in the production of vigorous competitive males which are sterile. crosses between the males of the freshwater species, provisionally called species a and b, and the females of the saltwater species a. melas and a. merus result in f(1) generations almost en ...19695306543
malaria vectorial capacity of a population of anopheles gambiae: an exercise in epidemiological entomology.in order to assess the factors of malaria vectorial capacity and the daily reproduction rate, separate consideration is given to data from kankiya, northern nigeria, concerning the incidence of vector-man contact (the man-biting rate), the vector's expectation of infective life, as reflected by the proportion of parous mosquitos under certain conditions, and the vector's man-biting habit, comprising the frequency of feeding and the human blood index. the main difficulty in the assessment of each ...19695306719
preliminary investigation on the use of a light-trap for sampling malaria vectors in the gambia.light-traps have been used successfully as mechanical sampling tools for insects of agricultural importance but medical entomologists have had only limited success because of the assumption that light-traps would attract vectors, even when sited in open fields well away from hosts. the investigations reported in this paper suggest that vectors are attracted primarily by their hosts and that only when light-traps are placed in the immediate vicinity of hosts, or in the narrow flight paths followe ...19695306720
a village-scale trial of oms-214 (dicapthon) for the control of anopheles gambiae and anopheles funestus in northern nigeria. 19695308704
a village-scale trial of oms-708 (mobam) for the control of anopheles gambiae and anopheles funestus in northern nigeria. 19695308705
a verandah-trap hut for studying the house-frequenting habits of mosquitoes and for assessing insecticides. iv. the effect of tetramethrin on the behaviour and mortality of anopheles gambiae giles. 19695375525
[experimental transmission of bancroft's filariasis: comparison of the carrier capacity of a and b species of anopheles gambiae]. 19694259075
ddt resistance in the anopheles gambiae complex. 19705442083
triple and quadruple hybridization in the anopheles gambiae complex. 19705485609
upper limit in male multiple mating in anopheles gambiae species a. 19705485610
identifications of member species of the anopheles gambiae complex in the zambesi valley. 19705530057
identification of the anopheles gambiae complex in nigeria by larval and adult chromosomes. 19705531056
field attempt to assess the mating competitiveness of sterile males produced by crossing 2 member species of the anopheles gambiae complex.in laboratory experiments sterile males produced by crossing member species of the anopheles gambiae complex competed very successfully with normal males for normal females and the latter when mated with sterile males laid sterile eggs.a field trial was arranged in a small isolated village near bobo-dioulasso, upper volta; the trial took place at the end of the rainy season against a declining population of species a. sterile males were produced from the cross between species b males and an. mel ...19705309520
survival of female anopheles gambiae giles through a 9-month dry season in sudan.the dry-season biology of a member of the anopheles gambiae complex (probably species b) was studied in 2 areas in the khartoum region of sudan. it was found that in the valley of the white nile the species maintained itself by low-level breeding, as shown by the continuing presence of larvae, male mosquitos and parous females through the dry months (9 months in the year). in the scattered villages of arid areas situated more than 20 km from the nile valley, on the other hand, regular sampling t ...19705310144
the behaviour of sub-periodic brugia malayi, buckley and edeson, in anopheles gambiae, giles and aedes aegypti, linnaeus. 19704394270
a microsporidan infection of anopheles gambiae giles, from tanzania, interpretation of its mode of transmission and notes on nosema infections in mosquitoes. 19704101134
[sporogony in anopheles gambiae "a" of pyrimethamine-resistant plasmodium falciparum strains]. 19704921289
chromosomal evidence for natural interspecific hybridization by mosquitoes of the anopheles gambiae complex. 19714930676
flagellar attachment and detachment of crithidia fasciculata to the gut wall of anopheles gambiae. 19715126403
the practical problem of identifying members of the anopheles gambiae complex in autecological studies. 19715155712
[a method of genetic control of anopheles gambiae giles, 1902]. 19715166574
studies on sampling larval populations of the anopheles gambiae complex.better sampling techniques are urgently required for estimating the population size and larval mortalities of the anopheles gambiae complex. some preliminary investigations into these problems were therefore made in nigeria and kenya. knowledge of the type of distribution shown by larvae is important since it should enable more accurate sampling to be undertaken; consequently the biological distribution of larvae of the an. gambiae complex was investigated. because there is often a need in contr ...19715316615
potential use of the spermatheca in the separation of species a and b females of the anopheles gambiae complex in northern nigeria. 19715316625
cytological maps for the practical identification of females of the three freshwater species of the anopheles gambiae complex. 19725021564
a mosquito cell line (mos. 55) from anopheles gambiae larva. 19725048073
a continuous mosquito cell line from larvae of anopheles gambiae. 19725048085
production of reciprocal translocations in anopheles gambiae species a. 19725048086
cytological demonstration of some heterozygous reciprocal translocations in anopheles gambiae species a. 19725048087
a comparison of the x chromosomes of the ovarian nurse cells of species b and species c of the anopheles gambiae complex. 19725048088
the crossing characteristics of a new, sixth species in the anopheles gambiae complex. 19725071055
cytological studies on a new member of the anopheles gambiae complex. 19725071056
population dynamics and vectorial importance of species a and species b of the anopheles gambiae complex. 19725071058
the anopheles gambiae complex and malaria transmission around kisumu, kenya. 19725071087
partial exophily of anopheles gambiae species b in the khashm elgirba area in eastern sudan.many anopheles gambiae were found resting outdoors in an area that had been sprayed with ddt, the numbers being particularly large 4 months after the first annual spraying cycle. a high proportion of the resting females had consumed a blood meal. window-trap studies showed that a marked exodus from sprayed huts occurred in the morning. it is concluded that the outside resting of an. gambiae is either a natural habit or the result of the irritant action of ddt. this behaviour of the vector is reg ...19724537333
taxonomic value of spermatheca size for distinguishing four members of the anopheles gambiae complex in east africa.measurements of spermatheca diameter and wing length were made on 8 east african mosquito populations comprising anopheles merus and a. gambiae species a, species b, and the "bwamba cytotype" (=species d). the results showed that, on average, the spermatheca in species a females is larger than in species b. in each of two tanzanian localities harbouring sympatric populations of a and b an overlap of 20% was observed between the frequency distributions of spermatheca diameter in this pair of spec ...19724538540
inheritance of ddt resistance in species a and b of the anopheles gambiae complex.it has been reported that anopheles gambiae species a is resistant to ddt in upper volta and togo, and ddt resistance has been found in a sudan strain of species b. the species a strain from upper volta was more resistant to ddt than the togo strain, while the sudan strain of species b was the least resistant. the expression of resistance is genetically determined, and studies on the mode of inheritance have shown that resistance is inherited as a single dominant gene in the togo strain of speci ...19724540681
selective feeding of anopheles gambiae according to abo blood group status. 19724561964
further studies on consecutive matings in the anopheles gambiae complex. 19724563021
[transmission of wuchereriasis and of bovine setariasis: histological study of the passage of microfilariae through the stomach wall of anopheles gambiae a and aedes aegypti]. 19724565488
[compared receptivity of species a and b of the anopheles gambiae to plasmodium falciparum in madagascar]. 19724575357
[laboratory study of the receptivity of anopheles gambiae a and anopheles gambiae b to laverania falcipara]. 19724577283
modifications in the arrangement of the pellicular microtubules of crithidia fasciculata in the gut of anopheles gambiae. 19724651468
experimental infection of anopheles gambiae and culex pipiens fatigans with wuchereria bancrofti in coastal east africa. 19734707754
observations on the behaviour of anopheles gambiae sp. b in kambole village in the zambesi valley, zambia. 19734722428
louvre-trap hut assessments of mosquito coils, with a high pyrethrin i-pyrethrin ii ratio, against anopheles gambiae giles, culex fatigans wied. and mansoni uniformis (theo.). 19734760046
identification of predators of anopheles gambiae resting in huts, by the precipitin test. 19734777420
exophily in anopheles gambiae species b in the sudan. 19734785451
further isolations of translocations in anopheles gambiae species a. 19734785452
the crossing and chromosome characteristics of a new, sixth species in the anopheles gambiae complex. 19734788353
a cytological technique for the study of anopheles gambiae complex. 19734788355
larval differences between sympatric populations from kaduna, west africa, of species a and b of the anopheles gambiae group. 19734788364
electrophoretic patterns in anopheles gambiae and simulium damnosum. 19734799124
susceptibility of anopheles gambiae mosquito cell line (mos 55) to some arboviruses. 19734150034
anopheles gambiae complex and disease transmission in africa. 19744420769
preferential feeding of anopheles gambiae mosquitoes on human subjects of blood group o: a relationship between the abo polymorphism and malaria vectors. 19744426600
correspondence ot the editor: anopheles gambiae complex in mauritius. 19744460315
comparative efficiency of anopheles stephensi and anopheles gambiae as vectors of drug-resistant plasmodium falciparum from thailand. 19744594077
selections of anopheles gambiae species a for susceptibility and refractoriness to malaria parasites. 19744607768
linkage studies on ddt and dieldrin resistance in species a and species b of the anopheles gambiae complex.linkage studies in a. gambiae species a showed that the two autosomal markers diamond (di) and collarless (c) belonged to different linkage groups: di on linkage group 2 and c on linkage group 3. with the aid of the two markers it was possible to establish the linkage relationship between the genes for ddt resistance and for the two types of dieldrin resistance. the ddt resistance gene in species a assorted independently of c and was found to be linked with di at a map distance of 26.3 units. th ...19744616778
a study of the host selection patterns of the mosquitoes of the kisumu area of kenya.the results of 12,168 precipitin tests on blood meals of mosquitoes of the kano plain caught by a variety of catching techniques indicate that to gain an accurate overall picture of feeding patterns both the indoor and the outdoor biotope must be sampled. cdc light traps operated inside houses and monkswood type light traps operated under the outside eaves of houses were found to collect larger numbers of blood fed specimens from a wider range of species than battery driven aspirators collecting ...19752997
[on the migration of the third stage larvae of wuchereria bancrofti in anopheles gambiae (author's tranls)].the migratory pattern of the third stage larvae of wuchereria bancrofti from the thorax into the head of anopheles gambiae has been studied. a total of 1269 infected mosquitoes were dissected and examined from the 7th through the 19th day after the blood meal. the filarial worms migrated from the thorax through the abdomen before they reached the head of the mosquito. third stage larvae first appeared in the abdomen on the 9th day after infection, where their number increased progressively up to ...19751103391
entrainment of the pupation and adult activity rhythms during development in the mosquito anopheles gambiae. 19751113887
a survey of species a and b of the anopheles gambiae giles complex in the kisumu area of kenya prior to insecticidal spraying with oms-43 (fenitrothion).throughout 1972 surveys were made in kenya on the anopheles gambiae giles complex in an area near kisumu, part of which was to have all houses sprayed with oms-43 (fenitrothion) the following year. pre-spray data was collected on monthly hut densities, man-biting rates, parity and the human blood indices and sporozoite rates of a. gambiae caught in both an area designated for spraying (evaluation zone) and a comparison zone which was to remain unsprayed. the sporozoite rates, host preferences, a ...19751124970
cross-resistance to an insect juvenile hormone analogue in a species of the anopheles gambiae complex resistant to insecticides. 19751159721
some applications of bloodmeal identifications in relation to the epidemiology of vector-borne tropical diseases.no attempt has been made to give a complete review of the value of bloodmeal identifications of haematophagous arthropods in relation to the epidemiology of disease but rather to choose certain topics of current interest. a brief review of the current techniques for bloodmeal identification is given with particular reference to recent studies on mosquitoes and sandflies using the haemagglutination inhibition test. new data on mixed feeding by anopheles gambiae (a mixture of species b and c) coll ...19751171257
oogenesis in the malaria mosquito anopheles gambiae.oogenesis has been followed with the electron microscope in 2 strains of the malaria mosquito anopheles gambiae, from the emergence of the adult (oocytes at leptonema) till shortly before the oocytes are ready for oviposition. after pachynema the chromosomes form a karyosphere and a fibrous capsule develops around it. work on other mosquitoes suggests that the capsule may be related to the synaptonemal complexes. bot anopheles strains contain at some time an extrachromosomal (not dna-containing) ...19761253253
hepatitis b surface antigen (australia antigen) in mosquitoes collected in senegal, west africa.during july and august of 1973, 9,198 mosquitoes were collected in the republic of senegal. eight species of mosquitoes were found in the collections: culex thalassius, culex pipiens quinquefasciatus, culex trigripes, culex phillipi, aedes irritans, aedes aegypti, anopheles gambiae, and mansonia sp. specimens were sorted by biological condition; those obviously engorged were designated as (e), females with swollen abdomens not conspicuously blooded were considered gravid (g), and those with norm ...19763983
preliminary results of an entomological survey of the potential arbovirus vectors in the french territory of afars and issas.the preliminary results of an entomological survey of the potential arbovirus vectors in the french territory of afars and issas are exposed. 25 culicid species were recorded, specially anopheles gambiae, culex tritaeniorhynchus, c. univittatus, c. pipiens fatigans, aedes caspius, ae. vittatus, ae. arabiensis. ae. aegypti larvae were collected on a dhow arriving in djibouti. 5 species of ticks and 4 sandfly speices were also recorded. the epidemiological modalities of certain arboviroses in this ...197613940
incidence of arbovirus isolated from mosquitoes in the forest region of south cameroun, region of yaoundé .the authors give results of a survey of arboviruses isolated from mosquitoes in the neighborhood of yaoundé, southern cameroon, from 1964 to 1972. during this period of nine years 127.520 female mosquitoes including at least 72 species were collected and processed for attempt of virus isolation. 55 strains belonging to 12 viral types were recovered from at least 19 species of mosquitoes. the appearance of different viruses over the years was quite intermittent. a possible reason for this is the ...197616703
the susceptibility of isolated guts from various species of mosquito to some arboviruses.isolated guts cultured in vitro from aedes aeaegypti and ae. togoi were more susceptible to infection by sin, sf, chik and wn viruses than tissue similarly cultured from anopheles gambiae and an. stephensi. langat tp 64, a tick-borne virus, failed to infect any of the cultured mosquito tissues.1976178280
lack of a circadian rhythm in the ability of the gametocytes of plasmodium falciparum to infect anopheles gambiae. 1976786919
studies on quantitative aspects of the transmission of wuchereria bancrofti.feeding experiments with anopheles gambiae and culex fatigans infected with wuchereria bancrofti showed that the mosquito females were losing about 20% of their worm burden when they were feeding on a blood chamber as well as on the guinea pig. 6.6% of all mature larvae found in the mosquitoes succeeded in entering the final host. a striking high infection rate was observed in those mosquitoes which refused to feed on a guinea pig. these mosquitoes have also to be considered when the loss of fil ...1976941249
letter: the anopheles gambiae complex: naming the sibling species. 1976960206
the cell coat of crithidia fasciculata.a prominent filamentous and granular cell coat is associated with the plasma membrane of haptomonads of crithidia fasciculata attached to the cuticular lining of the hindgut of anopheles gambiae. this surface material is completely absent from morphologically identical haptomonads from the mosquito foregut and from rosettes in culture. on the basis of these observations, it is suggested that cell coat formation is dependent on suitable environmental conditions. a cytochemical staining technique ...1976967518
breeding of anopheles gambiae giles (diptera: culicidae) in rice fields in the kisumu area of kenya. 1976978695
identifications of members of the anopheles gambiae complex from mauritius. 19761006766
hut entry and exit by anopheles gambiae and anopheles funestus in an unsprayed village near kaduna in northern nigeria.hut entry and exit by an. gambiae and an. funestus were studied in an unsprayed village near kaduna in northern nigeria. a high turn-over of indoor resting mosquitoes of all blood digestion stages was noted throughout the night. the behaviour of both species was similar. the entry pattern was more uniform than the exit which showed two distinct peaks around sunset and after midnight. most of the daytime resting mosquitoes left the huts during the first hour after sunset, and therefore the mosqui ...19761032326
the impact of propoxur on anopheles gambiae s.1. and some other anopheline populations, and its relationship with some pre-spraying variables.a significant and stable difference in the residual night-biting collection (nbc, observed/expected) of a. gambiae s.l. was observed among different villages of the west african savannah when sprayed for 2 years with propoxur. the residual mosquito density of a given village was positively associated with some of its pre-spraying characteristics: the nbc/psc (pyrethrum spray collections) ratio, the median biting hour, and possibly the proportion of species b. it was not significantly associated ...19761088351
mortalities of the immature stages of species b of the anopheles gambiae complex in kenya: comparison between rice fields and temporary pools, identification of predators, and effects of insecticidal spraying. 1977845895
behavioural divergences between mosquitoes with different inversion karyotypes in polymorphic populations of the anopheles gambiae complex. 1977865604
cytogenetic observations on translocations in species a of the anopheles gambiae complex.the ovarian polytene chromosomes of females of species a of the anopheles gambiae complex, from colonies suspected of containing heterozygous translocations, were examined. in three lines, the presence of translocations was confirmed and the chromosomes involved in the interchanges identified. the usefulness of cytogenetic methods for the detection of translocations is discussed.1977869611
on the development of onchocerca volvulus in mosquitoes.in an attmept to find an experimental vector for onchocerca volvulus which can be easily be bred under laboratory conditions, the susceptibility of anopheles gambiae and aedes aegypti to infection with o. volvulus was studied. the mosquitoes were fed on a membrane feeding apparatus containing microfilariae of o. volvulus. whereas a. gambiae was refractory to infection. 14.9% of a. aegypti females became infected with developing stages, 11,2% showed young and mature third-stage larvae as well as ...1977888189
modification of circadian flight activity in the mosquito anopheles gambiae after insemination. 1977895871
fluorescence banding techniques in the identification of sibling species of the anopheles gambiae complex.the mitotic chromosomes of the sibling species a and b of the anopheles gambiae complex were stained with hoechst 33258 and examined by fluorescence microscopy. the autosomes fluoresce homogenously and similarly in both species while the sex chromosomes differ in the location and brightness of some heterochromatic blocks. these cytochemical differences allow the cytotaxonomic identification of these cryptic species.1977268309
evaluation of some parameters of house-leaving behaviour of anopheles gambiae s.l. 1977617923
arbovirus isolations from mosquitoes: kano plain, kenya.arbovirus isolation attempts on 324,486 mosquitoes captured over a four-year period on the kano plain, kenya, yielded 15 isolates including pongola (six strains), ilesha (three strains), germiston (two strains), sindbis (one strain), barur (one strain) and two viruses which could not be characterized. mansonia uniformis, anopheles gambiae and culex antennatus constituted 70% of the total collection and accounted for all of the isolates except one, which came from anopheles funestus.197724288
the incidence of mosquitoes feeding on mothers and babies at kisumu, kenya.blood fed mosquitoes were collected inside four bed nets in which mother/child pairs, having different haptoglobin types, slept. the bloodmeals were analysed by gradient gel electrophoresis to determine on which person the mosquitoes had fed. the results suggest that the mothers are fed on much more than babies by both anopheles gambiae s.l. and culex fatigans. in one hut at least 15.2 per cent of the mosquitoes had taken all or part of their bloodmeal elsewhere. a greater number of double feeds ...197825970
the isolation of a bwamba virus variant from man in western kenya.a bwamba group virus was isolated from the blood of a febrile child on the kano plain, kenya. the isolate (ny-45), closely resembling bwamba, established infection in both anopheles gambiae and mansonia uniformis. neither the bwamba nor the pongola prototype strains grew in both species. in gel-diffusion tests ny-45 virus passaged through mosquitoes exhibited a line of identity with pongola antiserum. in contrast no cross-reaction was observed with ny-45 virus which had not previously been passa ...197828377
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