Biomphalaria straminea

Biomphalaria straminea
	Shells of Biomphalaria straminea
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia; clade Euthyneura; clade Panpulmonata; clade Hygrophila
Superfamily:	Planorboidea
Family:	Planorbidae
Subfamily:	Planorbinae
Tribe:	Biomphalariini
Genus:	Biomphalaria
Species:	B. straminea
Binomial name
	Biomphalaria straminea; (Dunker, 1848)
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.

Distribution

Biomphalaria glabrata is a Neotropical[1] species. It occurs in:

Caribbean: Saint Lucia - reported since 1993[4]
northeast of Brazil

This species has recently expanded its native range.[1] As an introduced species, it occurs in:

Hong Kong - firstly collected in 1973[5]

Phylogeny

A cladogram showing phylogenic relations of species in the genus Biomphalaria:[6]

Biomphalaria

	Biomphalaria stanleyi

	Biomphalaria pfeifferi

Biomphalaria camerunensis

Nilotic species complex

	Biomphalaria sudanica

	Biomphalaria choanomphala

Biomphalaria alexandrina

Biomphalaria smithi

Biomphalaria glabrata

Biomphalaria straminea complex

	Biomphalaria kuhniana

	Biomphalaria straminea

	Biomphalaria straminea

	Biomphalaria intermedia

	Biomphalaria amazonica

	Biomphalaria sp.

	Biomphalaria tenagophila

	Biomphalaria occidentalis

	Biomphalaria prona

	Biomphalaria andecola

Biomphalaria sp. (? Biomphalaria havanensis)

	Biomphalaria sp. (? Biomphalaria havanensis)

	Biomphalaria temascalensis

Biomphalaria obstructa

Biomphalaria helophila

Biomphalaria peregrina

Biomphalaria schrammi

Parasites

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.[6] Schistosoma mansoni was not able to infect Biomphalaria straminea previously and it has adapted to this host.[6]

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References

Pointier JP, David P, Jarne P (September 2005). "Biological invasions: the case of planorbid snails". Journal of Helminthology. 79 (3): 249–56. doi:10.1079/JOH2005292. PMID 16153319.
Borda CE, Rea MJ (March 2007). "Biomphalaria tenagophila potencial vector of Schistosoma mansoni in the Paraná River basin (Argentina and Paraguay)" (PDF). Memórias do Instituto Oswaldo Cruz. 102 (2): 191–195. doi:10.1590/s0074-02762007005000022. PMID 17426884.
Paraense WL (2001). "The Schistosome Vectors in the Americas". Memórias do Instituto Oswaldo Cruz. 96 (supplement): 7–16. doi:10.1590/S0074-02762001000900002. PMID 11586421. Archived from the original on 6 July 2011.
Pointier JP (1993). "The introduction of Melanoides tuberculata (Mollusca: Thiaridae) to the island of Saint Lucia (West Indies) and its role in the decline of Biomphalaria glabrata, the snail intermediate host of Schistosoma mansoni". Acta Tropica. 54 (1): 13–18. doi:10.1016/0001-706x(93)90064-i. PMID 8103624.
Meier-Brook C (1974). "A snail intermediate host of Schistosoma mansoni introduced into Hong Kong". Bulletin of the World Health Organization. 51 (6): 661. PMC 2366262. PMID 4549615.
DeJong RJ, Morgan JA, Paraense WL, Pointier JP, Amarista M, Ayeh-Kumi PF, et al. (December 2001). "Evolutionary relationships and biogeography of Biomphalaria (Gastropoda: Planorbidae) with implications regarding its role as host of the human bloodfluke, Schistosoma mansoni". Molecular Biology and Evolution. 18 (12): 2225–39. doi:10.1093/oxfordjournals.molbev.a003769. PMID 11719572.

External links

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[Pointier2005-1] Pointier JP, David P, Jarne P (September 2005). "Biological invasions: the case of planorbid snails". Journal of Helminthology. 79 (3): 249–56. doi:10.1079/JOH2005292. PMID 16153319.

[2] Borda CE, Rea MJ (March 2007). "Biomphalaria tenagophila potencial vector of Schistosoma mansoni in the Paraná River basin (Argentina and Paraguay)" (PDF). Memórias do Instituto Oswaldo Cruz. 102 (2): 191–195. doi:10.1590/s0074-02762007005000022. PMID 17426884.

[Paraense2001-3] Paraense WL (2001). "The Schistosome Vectors in the Americas". Memórias do Instituto Oswaldo Cruz. 96 (supplement): 7–16. doi:10.1590/S0074-02762001000900002. PMID 11586421. Archived from the original on 6 July 2011.

[4] Pointier JP (1993). "The introduction of Melanoides tuberculata (Mollusca: Thiaridae) to the island of Saint Lucia (West Indies) and its role in the decline of Biomphalaria glabrata, the snail intermediate host of Schistosoma mansoni". Acta Tropica. 54 (1): 13–18. doi:10.1016/0001-706x(93)90064-i. PMID 8103624.

[5] Meier-Brook C (1974). "A snail intermediate host of Schistosoma mansoni introduced into Hong Kong". Bulletin of the World Health Organization. 51 (6): 661. PMC 2366262. PMID 4549615.

[DeJong2001-6] DeJong RJ, Morgan JA, Paraense WL, Pointier JP, Amarista M, Ayeh-Kumi PF, et al. (December 2001). "Evolutionary relationships and biogeography of Biomphalaria (Gastropoda: Planorbidae) with implications regarding its role as host of the human bloodfluke, Schistosoma mansoni". Molecular Biology and Evolution. 18 (12): 2225–39. doi:10.1093/oxfordjournals.molbev.a003769. PMID 11719572.