Madagasikara spinosa

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Madagasikara spinosa
Madagasikara spinosa 01.JPG
Madagasikara spinosa
Scientific classification
Kingdom:
Phylum:
Class:
(unranked):
Superfamily:
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Genus:
Species:
M. spinosa
Binomial name
Madagasikara spinosa
(Lamarck, 1822) [2]
Synonyms [3]
  • Pirena spinosaLamarck, 1822
  • Melanopsis spinosa
  • Pirena (Melanatria) spinosa
  • Melanatria fluminea (Gmelin, 1791)
  • Melanatria spinosa
  • Melanopsis lamarckiiPotiez & Michaud, 1838
  • Pirena lamarckii
  • Pirena fluminea Reeve, 1859 [4]
  • Melanatria fluminea
  • Pirena mauraReeve, 1859
  • Pirena lingulataReeve, 1859
  • Pirena asperaBrot, 1862
  • Melanatria goudotianaBrot, 1879 in Brot, 1874-79

Madagasikara spinosa is a species of tropical freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Pachychilidae. [3]

Contents

Madagasikara spinosa is the type species of the genus Madagasikara . [3]

Distribution

This species is endemic to Madagascar. [3] It was recorded in East Madagascar and in surrounding islands such as Île Sainte-Marie. [3]

The type locality is "Dans le rivières de l’ile de Madagascar", in rivers of Madagascar. [3]

Description

Shells of Madagasikara spinosa. Naturalis Biodiversity Center - RMNH.MOL.170387 - Madagasikara fluminea (Gmelin, 1791) - Pachychilidae - Mollusc shell.jpeg
Shells of Madagasikara spinosa.

The shell is elongate and large and it has 5.0-11.0 whorls. [3] The color of the shell is from brown to black. [3] The apex is truncated. [3] There are axial ribs especially on upper whorls. [3] The aperture is widely oval with palatal and basal sinus. [3]

The width of the shell is 9.9-28.3 mm. [3] The height of the shell is 25.2-69.5 mm. [3] The width of the aperture is 5.0-18.4 mm. [3] The height of the aperture is 8.0-23.1 mm. [3]

The operculum is oval and black. [3]

The color of the animal is dark grey to black with yellowish dots. [3] Tentacles are quite long. [3] Radula is taeniglossate. [3] Radula is about 16 mm long with about 127 rows of teeth. [3]

Ecology

It lives in fast running streams. [3]

Sexes are separate (gonochorism). [3] Females lays eggs (oviparous). [3]

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References

  1. Van Damme, D. (2016). "Madagasikara spinosa". IUCN Red List of Threatened Species . 2016: e.T91353068A91353128. doi: 10.2305/IUCN.UK.2016-3.RLTS.T91353068A91353128.en . Retrieved 14 November 2021.
  2. Lamarck J. B. (1822). Histoire naturelle des animaux sans vertèbres. Paris, J. B. Baillière. page 172.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Köhler, F. & Glaubrecht, M. (2010). "Uncovering an overlooked radiation: molecular phylogeny and biogeography of Madagascar’s endemic river snails (Caenogastropoda: Pachychilidae: Madagasikara gen. nov.). Biological Journal of the Linnean Society 99: 867-894. doi : 10.1111/j.1095-8312.2009.01390.x
  4. Reeve L. A. (1859). Pirena. In: Reeve L. A. (ed.) Conchologia iconica. London, Reeve. 12: plate 2, figure 6-7, figure 9-10.