+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Interactions between intermediate snail hosts of the genus Bulinus and schistosomes of the Schistosoma haematobium group



Interactions between intermediate snail hosts of the genus Bulinus and schistosomes of the Schistosoma haematobium group



Parasitology 123: S245-S260(Suppl.)



Within each of the four species groups of Bulinus there are species that act as intermediate hosts for one or more of the seven species of schistosomes in the Schistosoma haematobium group, which includes the important human pathogens S. haematobium and S. intercalatum. Bulinus species have an extensive distribution throughout much of Africa and some surrounding islands including Madagascar, parts of the Middle East and the Mediterranean region. Considerable variation in intermediate host specificity can be found and differences in compatibility between snail and parasite can be observed over small geographical areas. Molecular studies for detection of genetic variation and the discrimination of Bulinus species are reviewed and two novel assays, allele-specific amplification (ASA) and SNaPshotTM, are introduced and shown to be of value for detecting nucleotide changes in characterized genes such as cytochrome oxidase 1. The value and complexity of compatibility studies is illustrated by case studies of S. haematobium transmission. In Senegal, where B. globosus, B. umbilicatus, B. truncatus and B. senegalensis may act as intermediate hosts, distinct differences have been observed in the infectivity of different isolates of S. haematobium. In Zanzibar, molecular characterization studies to discriminate between B. globosus and B. nasutus have been essential to elucidate the roles of snails in transmission. B. globosus is an intermediate host on Unguja and Pemba. Further studies are required to establish the intermediate hosts in the coastal areas of East Africa. Biological factors central to the transmission of schistosomes, including cercarial emergence rhythms and interactions with other parasites and abiotic factors including temperature, rainfall, water velocity, desiccation and salinity are shown to impact on the intermediate host-parasite relationship.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 003820914

Download citation: RISBibTeXText

DOI: 10.1017/s0031182001008046


Related references

Interactions between intermediate snail hosts of the genus Bulinus and schistosomes of the Schistosoma haematobium group. Parasitology 123 Suppl: S245-S260, 2001

Distribution and habitats of the Bulinus africanus species group, snail intermediate hosts of Schistosoma haematobium and Schistosoma mattheei in South Africa. Water SA 31(1): 117-125, 2005

Studies of the relationships between Schistosoma and their intermediate hosts. 1. The genus Bulinus and Schistosoma haematobium from Egypt. Journal of Helminthology 53(1): 15-29, 1979

Studies of the relationships between schistosoma and their intermediate hosts part 1 the genus bulinus and schistosoma haematobium from egypt. Journal of Helminthology 53(1): 15-30, 1979

Studies of the relationships between Schistosoma and their intermediate hosts. II. The genus Bulinus and Schistosoma haematobium from Sudan, Zaire and Zambia. Journal of Helminthology 53(3): 205-212, 1979

The sugar chemoreception niches of Bulinus globosus and Bulinus rohlfsi , the two most important snail hosts of Schistosoma haematobium in West Africa. Comparative Biochemistry & Physiology A Comparative Physiology 106(2): 373-379, 1993

Divergent Effects of Schistosoma haematobium Exposure on Intermediate-Host Snail Species Bulinus nasutus and Bulinus globosus from Coastal Kenya. American Journal of Tropical Medicine and Hygiene 96(4): 850-855, 2017

Developing species-specific primers to identify Bulinus truncatus and Bulinus beccari, the intermediate hosts of Schistosoma haematobium in Saudi Arabia. Gene 499(2): 256-261, 2012

The sugar chemoreception niches of Bulinus (Physopsis) globosus (Morelet) and Bulinus rohlfsi (Clessin), the two most important snail hosts of Schistosoma haematobium (Bilharz) in West Africa. Comparative Biochemistry and Physiology A, Comparative Physiology 106(2): 373-379, 1993

Biology, life-tables, and intrinsic rates of increase of Bulinus globosus Morelet and Lymnea natalensis Kraus (Gastropoda: Pulmonata)--the snail intermediate hosts of Schistosoma haematobium and Fasciola gigantica, respectively, in Southeastern Nigeria. Beitrage Zur Tropischen Landwirtschaft und Veterinarmedizin 22(4): 429-434, 1984

Experimental study of a Madagascan strain of Schistosoma haematobium compatibility with different molluscans of the Bulinus genus, potential intermediary hosts Etude experimentale dune souche malgache de Schistosoma haematobium compatibilite avec differents bulins, hotes intermediaires potentiels. Archives de l'Institut Pasteur de Madagascar 611: 53-57, 1994

Phenotypic variation on Biomphalaria alexandrina and Bulinus truncatus, the intermediate hosts of Schistosoma mansoni and Schistosoma haematobium in relation to their distribution and infection rate. Journal of the Egyptian German Society of Zoology 10(D): 99-113, 1993

Schistosoma haematobium in Lake Malaŵi susceptibility and molecular diversity of the snail hosts Bulinus globosus and B nyassanus. Journal of Helminthology 82(4): 377, 2008

Schistosoma haematobium in Lake Malaŵi: susceptibility and molecular diversity of the snail hosts Bulinus globosus and B. nyassanus. Journal of Helminthology 82(4): 377-382, 2008

Chromosomes of intermediate hosts of human bilharziasis abstract bulinus spp cyto taxonomy schistosoma haematobium. Malacologia 5(1): 25-27, 1966