| 词条 | Placostylus ambagiosus |
| 释义 |
| image = Placostylus ambagiosus priscus.JPG | image_caption = A shell of the subspecies Placostylus ambagiosus priscus | status = VU | status_system = IUCN2.3 | status_ref = [1] | regnum = Animalia | phylum = Mollusca | classis = Gastropoda | unranked_superfamilia = clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra | superfamilia = Orthalicoidea | familia = Bothriembryontidae | subfamilia = Placostylinae | genus = Placostylus | species = P. ambagiosus | binomial = Placostylus ambagiosus | binomial_authority = Suter, 1906[2][3] }} Placostylus ambagiosus is a species of flax snail (Māori: pupuharakeke), a large air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Bothriembryontidae. DescriptionThis snail has a large ({{convert|60|-|95|mm|disp=or}} long) shell, which is heavily calcified. DistributionThis land snail species occurs in New Zealand. It is restricted to a small fragmented area of Northland Region, including the Aupouri Peninsula and Motuopao Island.[4] Hypothetical subspeciesIn 2011, Buckley et al.[5] established, based on molecular phylogeny research and shell morphology research, that there are in fact no subspecies of Placostylus ambagiosus.[5] However, in the past, what were thought to be eight extant subspecies and a number of undescribed but distinct populations were named;[4] 6 of these "subspecies" are now extinct[6] (marked with a †); conservation statuses were given according to the New Zealand Threat Classification System for the extant taxa: "nationally critical" and "nationally endangered":[7]
References1. ^{{Cite journal | author = Sherley, G. | title = Placostylus ambagiosus | journal = The IUCN Red List of Threatened Species | volume = 1996 | page = e.T17444A7072200 | publisher = IUCN | date = 1996 | url = http://www.iucnredlist.org/details/17444/0 | doi = 10.2305/IUCN.UK.1996.RLTS.T17444A7072200.en | access-date = 27 December 2017}} 2. ^Suter H. (1906). J. de Conch. 54: 253, plate 8, figure 1-3. 3. ^{{cite web |url=http://collections.tepapa.govt.nz/objectdetails.aspx?oid=158444 |publisher=Museum of New Zealand Te Papa Tongarewa |accessdate=February 5, 2010 |title=Object: Placostylus ambagiosus Suter, 1907; lectotype; lectotype of Placostylus hongii ambagiosus Suter, 1907}} 4. ^1 {{cite book |title=Captive rearing and biology of the endangered giant land snails Placostylus ambagiosus and P. hongii (Pulmonata: Bulimulidae) |author=I. A. N. Stringer |author2=E. A. Grant |last-author-amp=yes |series=DOC Research & Development Series 279 |publisher=Department of Conservation |isbn=978-0-478-14288-4 |year=2007 |url=http://www.doc.govt.nz/upload/documents/science-and-technical/drds279.pdf}} 5. ^1 Buckley T. R., Stringer I., Gleeson D., Howitt R., Attanayake D., Parrish R., Sherley G. & Rohan M. (2011). "A revision of the New Zealand Placostylus land snails using mitochondrial DNA and shell morphometric analyses, with implications for conservation". New Zealand Journal of Zoology 38(1): 55-81. {{doi|10.1080/03014223.2010.527997}}. 6. ^{{cite web |url=http://www.nhc.net.nz/index/extinct-new-zealand/extinct.htm |title=Extinct Species of New Zealand |accessdate=February 5, 2010 |publisher=Natural Heritage Collection}} 7. ^{{cite web |url=http://www.doc.govt.nz/publications/conservation/archive/new-zealand-threat-classification-system-lists-2002/terrestial-invertebrate-part-one/ |title=Terrestrial invertebrate - part one |year=2002 |work=New Zealand Threat Classification System |publisher=Department of Conservation}} Further reading
3 : Bothriembryontidae|Gastropods described in 1906|Gastropods of New Zealand |
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