| 词条 | Madagasikara spinosa |
| 释义 |
| name = Madagasikara spinosa | image = Madagasikara spinosa 01.JPG | image_caption = Madagasikara spinosa | status = NT | status_system = IUCN3.1 | status_ref = [1] | regnum = Animalia | phylum = Mollusca | classis = Gastropoda | unranked_superfamilia = clade Caenogastropoda clade Sorbeoconcha | superfamilia = Cerithioidea | familia = Pachychilidae | genus = Madagasikara | species = M. spinosa | binomial = Madagasikara spinosa | binomial_authority = (Lamarck, 1822)[2] | synonyms_ref = [3] | synonyms =
}}Madagasikara spinosa is a species of tropical freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Pachychilidae.[4]Madagasikara spinosa is the type species of the genus Madagasikara.[4] DistributionThis species is endemic to Madagascar.[4] It was recorded in East Madagascar and in surrounding islands such as Île Sainte-Marie.[4] The type locality is "Dans le rivières de l’ile de Madagascar", in rivers of Madagascar.[4] DescriptionThe shell is elongate and large and it has 5.0-11.0 whorls.[4] The color of the shell is from brown to black.[4] The apex is truncated.[4] There are axial ribs especially on upper whorls.[4] The aperture is widely oval with palatal and basal sinus.[4] The width of the shell is 9.9-28.3 mm.[4] The height of the shell is 25.2-69.5 mm.[4] The width of the aperture is 5.0-18.4 mm.[4] The height of the aperture is 8.0-23.1 mm.[4] The operculum is oval and black.[4] The color of the animal is dark grey to black with yellowish dots.[4] Tentacles are quite long.[4] Radula is taeniglossate.[4] Radula is about 16 mm long with about 127 rows of teeth.[4] EcologyIt lives in fast running streams.[4] Sexes are separate (gonochorism).[4] Females lays eggs (oviparous).[4] References1. ^{{Cite journal | author = Van Damme, D. | title = Madagasikara spinosa | journal = The IUCN Red List of Threatened Species | volume = 2016 | page = e.T91353068A91353128 | publisher = IUCN | date = 2016 | url = http://www.iucnredlist.org/details/91353068/0 | doi = 10.2305/IUCN.UK.2016-3.RLTS.T91353068A91353128.en | access-date = 9 December 2017}} {{Taxonbar|from=Q3320337}}2. ^Lamarck J. B. (1822). Histoire naturelle des animaux sans vertèbres. Paris, J. B. Baillière.page 172. 3. ^Reeve L. A. (1859). [https://archive.org/stream/conchologiaiconi12reev#page/n527/mode/2up Pirena]. In: Reeve L. A. (ed.) Conchologia iconica. London, Reeve. 12: [https://archive.org/stream/conchologiaiconi12reev#page/n535/mode/2up plate 2], figure 6-7, figure 9-10. 4. ^1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 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}} 3 : Pachychilidae|Gastropods described in 1822|Taxonomy articles created by Polbot |
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