Discus macclintocki • Earth.com
discus macclintocki
12-22-2016

Discus macclintocki

Discus macclintocki NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports — ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.

This snail is limited to patches of algific talus slope habitat. It is a relict species from the last ice age. Much of its remaining habitat is located on the Driftless Area National Wildlife Refuge in Iowa. Known from fossil evidence about 400,000 years old, it is one of many glacial relict species that remain in the Driftless Area, a glacier-eroded plateau that now makes up parts of Iowa, Illinois, Minnesota, and Wisconsin. Much of the area was covered by glaciers about 500,000 years ago, while parts of the Driftless Area were unglaciated.

The algific talus slope habitat that harbors the snail is a landscape cooled by air and water emerging from masses of subterranean ice. The ground temperature rarely exceeds 50 °F even in summer. Here the snail feeds on leaf litter from trees (mainly birch, maple and dogwood) and shrubs. During the winter, it burrows underground and becomes dormant. It breeds from March to August, laying two to six eggs in the litter. Juveniles emerge in about 28 days. The life span of the snail is 5 to 7 years.[3] The adult is about 5-8 millimeters wide,[4] with a brownish or greenish shell

Detailed information
Full Name: Iowa Pleistocene snail (Discus macclintocki)
Where found: Wherever found
Critical Habitat:N/A
Species Group:Snails
Current listing status
Status Date Listed Lead Region Where Listed
Endangered 08/02/1978 Great Lakes-Big Rivers Region (Region 3) Wherever found
  • States/US Territories in which the Iowa Pleistocene snail, Wherever found is known to or is believed to occur: Illinois , Iowa
  • US Counties in which the Iowa Pleistocene snail, Wherever found is known to or is believed to occur: View All
  • USFWS Refuges in which the Iowa Pleistocene snail, Wherever found is known to occur: Driftless Area National Wildlife Refuge
Federal register documents
Date
Citation Page
Title
09/14/2010 75 FR 55820 55823 5-Year Status Reviews of Seven Midwest Species; Notice of initiation of reviews; request for information.
03/30/2006 71 FR 16176 16177 5-Year Review of Five Midwestern Species
07/03/1978 43 FR 28932 28935 Final Determination that Seven Eastern U.S. Land Snails are Endangered or Threatened Species
04/28/1976 41 FR 17742 17747 Proposed Endangered or Threatened Status for 32 U.S. Snails [Proposed 15 as E/17 T]; 41 FR 17742 17747 (Amargosa snail, Fontellicella micrococcus; Ash Meadows turban snail, Fluminicola erythropoma; bad water snail, Assiminea infirma; banded dune snail, Helminthoglypta walkeriana; California Northern River snail, Monadenia setosa; Cheatum's snail, Tryonia cheatumi; Chittenango ovate amber snail, Succinea ovalis chittenangoensis; Clark's Nantahala middle-toothed land snail, Mesodon clarki nantahala; dented peninsula snail, Helminthoglypta arrosa miwoka; Diamond-Y pond snail, Physa virgata bottomeri; flat-spired three-toothed land snail, Triodopsis platysayoides; fraternal snail, Micrarionta feralis; Jone's middle-toothed land snail, Mesodon jonesianus; Karok Indian snail, Vestericola karokarum; MacClintock's discoid land snail, Discus macclintocki; Magazine Mountain middle-toothed land snail, Mesodon magacinenses; Muddy Valley turban snail, Fluminicola avernalis; Nicklin's Peninsula snail, Helminthoglypta nickiniana awania; Pahranagat Valley turban, Fluminicola merriami; painted snake coiled forest snail, Anguispira picta; Pilsbru's narrow apertured land snail, Stanotrema pilsbryi; Reeves County snail, Cochliopa texana; rocky coast snail, Monadenia fidelis pronotis; St. George snail, Amnicola deseria; slug snail, Binneya notabilis; Socorro snail, Amnicola neomexicana; Stock Island tree snail, Orthalicus reses reses; Strange many- whorled land snail, Polygyra peregrina; Tryon's snail, Micrarionta tryoni; Virginia fringed mountain snail, Polugriscus virginianus; White River snail, Tryonia clathraia; Zion canyon snail, Physa zioni)
Recovery
No critical habitat rules have been published for the Iowa Pleistocene snail.
Date
Title
Plan Action Status
Plan Status
03/22/1984 Iowa Pleistocene Snail View Implementation Progress Final
Date
Title
Plan Action Status
Plan Status
03/22/1984 Iowa Pleistocene Snail View Implementation Progress Final
Date
Citation Page
Title
Document Type
09/14/2010 75 FR 55820 55823 5-Year Status Reviews of Seven Midwest Species; Notice of initiation of reviews; request for information.
  • Notice 5-year Review, Initiation
03/30/2006 71 FR 16176 16177 5-Year Review of Five Midwestern Species
  • Notice 5-year Review, Initiation
Date
Title
08/21/2013 Iowa Pleistocene Snail 5-Year Review
08/31/2009 Iowa Pleistocene Snail completed 5-yr review
News coming your way
The biggest news about our planet delivered to you each day