Biomphalaria straminea | |
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Shells of Biomphalaria straminea | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Heterobranchia |
Superorder: | Hygrophila |
Family: | Planorbidae |
Genus: | Biomphalaria |
Species: | B. straminea
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Binomial name | |
Biomphalaria straminea (Dunker, 1848)
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Synonyms | |
Planorbis stramineus |
Biomphalaria straminea is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
This snail is a medically important pest,[1] because an intermediate host for the parasite Schistosoma mansoni and a vector of schistosomiasis.[2]
The history of these discoveries was summarized by Paraense (2001).[3]
The shell of this species, like all planorbids is sinistral in coiling, but is carried upside down and thus appears to be dextral.
Biomphalaria glabrata is a Neotropical[1] species. It occurs in:
This species has recently expanded its native range.[1] As an introduced species, it occurs in:
To allow comparisons with other mollusc genomes, a high-quality genome assembly for B. straminea together with accompanying transcriptomes has been sequenced, producing a 1.005 Gb in size reference genome consisting of 36 chromosomes.[7]
A cladogram showing phylogenic relations of species in the genus Biomphalaria:[8]
Biomphalaria |
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Biomphalaria straminea is an intermediate host for Schistosoma mansoni and a vector of intestinal schistosomiasis. Schistosoma mansoni came to Neotropics from Africa in context of the slave trade.[8] Schistosoma mansoni was not able to infect Biomphalaria straminea previously and it has adapted to this host.[8]