- Outer side of an operculum
- Inner side of an operculum
Filopaludina martensi | |
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Drawing of an apertural view of a shell of Filopaludina martensi | |
Abapertural view of a shell | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Order: | Architaenioglossa |
Family: | Viviparidae |
Genus: | Filopaludina |
Species: | F. martensi |
Binomial name | |
Filopaludina martensi (Frauenfeld, 1864) [2] | |
Synonyms [1] | |
Filopaludina martensi is a species of large freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Viviparidae.
The shape of the shell is ovate-conic. [3] The apex is acute and violet-black in colour. [3] The umbilicus of the shell is very narrow. [3] There are fine spiral lines on the shell. [3] The color of the shell is green or dark brown-blackish. [3] The shell has 6–7 convex whorls. [3] Whorls are with upper spiral lines, some are obsolescently sculptured. [3] The last whorl is swollen. [3]
The aperture is oblique, ovately rounded. [3] The aperture is cerulean-white in colour. [3] The upper part of the aperture is not acute. [3] The peristome is straight, thick, blunt, often outwardly blackish. [3]
The width of the shell is up to 31 millimetres (1.2 in). [3] The height of the shell is up to 55 millimetres (2.2 in). [3] The length of the aperture is up to 21 millimetres (0.83 in). [3]
The operculum has the color of horn with golden shining and it is widely ovate. There are concentric lines on the operculum. [3]
This species was firstly described by Eduard von Martens under the name Paludina cingulata in 1860 based on specimen collected by Henri Mouhot. [3] Georg Ritter von Frauenfeld created a new replacement name Vivipara martensi for this species in 1864, because the name Vivipara cingulata was already used for a fossil species by Philippe Matheron before. [2]
Three subspecies are recognized, [1] but this species and its subspecies require revision. [1]
This species is found in Cambodia, Indonesia, Laos, Malaysia, Thailand and Vietnam. [1] The type locality is "Siam" (a detailed type locality was not given). [3]
Filopaludina martensi lives in canals and ponds. [4] It feeds (as do all other Viviparidae) as a filter feeder. [4] There are in development 0–14 juveniles in a brood-pouch of a female. [5] Female gave birth to juveniles mainly at night. [5] Parasites of Filopaludina martensi martensi include:
Parasites of Filopaludina martensi include trematode Multicotyle purvisi . [8]
Filopaludina martensi is used as part of the cuisine of Thailand. [4]
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc.
The operculum is a corneous or calcareous anatomical structure like a trapdoor that exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails; the structure is found in some marine and freshwater gastropods, and in a minority of terrestrial gastropods, including the families Helicinidae, Cyclophoridae, Aciculidae, Maizaniidae, Pomatiidae, etc.
Viviparidae, sometimes known as the river snails or mystery snails, are a family of large aquatic gastropod mollusks, being some of the most widely distributed operculate freshwater snails.
The Chinese mystery snail, black snail, or trapdoor snail, is a large freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Viviparidae. The Japanese variety of this species is black and usually a dark green, moss-like alga covers the shell.
Notopala is a genus of moderately large to large, freshwater snails with an operculum, aquatic gastropod molluscs in the family Viviparidae, the river snails or mystery snails.
Paramelania damoni is a species of tropical freshwater snail with an operculum, an aquatic gastropod mollusk in the family Paludomidae.
Bellamya is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Viviparidae.
Notopala hanleyi is a species of large freshwater snail, an aquatic gastropod mollusc in the family Viviparidae. It is also classified as a subspecies Notopala sublineata hanleyi.
Faunus ater is a species of brackish water snail with an operculum, an aquatic gastropod mollusk in the family Pachychilidae.
Filopaludina is a genus of freshwater snails with a gill and an operculum, aquatic gastropod molluscs in the family Viviparidae.
Tylomelania gemmifera is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pachychilidae.
Filopaludina filosa is a species of large freshwater snail with a gill and an operculum. It is an aquatic gastropod mollusc in the family Viviparidae.
Filopaludina sumatrensis is a species of large freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Viviparidae.
Filopaludina javanica or Idiopoma javanica is a species of large freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Viviparidae.
Idiopoma doliaris is a species of large freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae.
Cipangopaludina cathayensis is a species of large, freshwater snail with an operculum and a gill, an aquatic gastropod mollusk in the family Viviparidae, the river snails.
Angulyagra polyzonata is a species of a freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae.
Rivularia is a monotypic genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Viviparidae. Species in this genus is distributed only along the Xiang River region of Hunan province, People's Republic of China.