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Topic: Tooth cave spider


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In the News (Fri 11 Dec 09)

  
  Spider Conservation Links
Carrel studies the chemical ecology of insects, spiders and millipedes and is conducting quantitative ecological studies of rare wolf spiders that are endemic to the xeric, sandyridges of central Florida.
Ann Rypstra has studied the ecology of spiders in agroecosystems, and is currently examining the effects of fragmentation on spider populations.
Tanasevitch studies systematics, biodiversity and zoogeography of spiders, and the conservation of endangered arachnids.
www.geocities.com /RainForest/9081/links.html   (1940 words)

  
 Spider Conservation in the United States
Spiders possess the characteristics of predators that can contribute to density-independent limitation of prey, including self-damping, high levels of polyphagy, and life cycles that are asynchronous to those of prey species (Riechert and Bishop 1990).
Also, spider silk is important to bird species for nest building; 24 of 42 families of passerine birds and nearly all species of hummingbird depend on silk from spiders and caterpillars for nest construction (Hansel 1993).
Cave invertebrates in Texas, including the endangered Tooth Cave spider, face similar threats as a result of development, such as the collapse or filling in of caves, flooding due to sewer overflow, and vandalism (Chambers and Jahrsdoerfer 1988).
www.umich.edu /~esupdate/library/97.03-04/skerl.html   (4049 words)

  
  Cave
Cave formation in limestone occurs because limestone dissolves under the action of rainwater and groundwater charged with CO carbonic acid) and naturally occurring organic acids.
Cave inhabiting animals can be categorized as troglobites (cave limited-species), troglophiles (species which can live their entire lives in caves, but also occur in other environments), trogloxenes (species which utilize caves, but must leave the caves to complete their life cycle) and accidentals.
Because of the fragile nature of the cave ecosytem, and the fact that cave regions tend to be isolated from one another, caves harbor a number of endangered species, such as, for example the Tooth cave spider, Liphistiidae Liphistius trapdoor spider and the Gray bat.
www.brainyencyclopedia.com /encyclopedia/c/ca/cave.html   (1626 words)

  
 New Page 1
By the end of September it was the longest surveyed cave in Randolph County with 17, 571 feet of passage.
In 1972 the grotto gated Bowden because of the extensive vandalism that was occurring.
Elklick Cave went to over a kilometer of passage and Big Springs topped the 2.1 kilometer mark--the old section was completed and the survey team started working toward the second entrance in August.
caves.org /grotto/mongrotto/history.htm   (4075 words)

  
 Downloads
SPIDER - Cast, paint and assemble an 8" Tarantula.
Move the legs to form a realistic spider.
T-rex Tooth, Utahraptor Claw, Shark Tooth - Remove the seam line and finish a fossil tooth or claw for display.
www.skullduggery.com /lessons.htm   (856 words)

  
 Species Profile
States/US Territories in which the Tooth Cave Spider is known to occur: Texas
Final Rule to Determine 5 Texas Cave Invertebrates to be End.
Proposal to Determine 5 Texas Cave Invertebrates to be End.
ecos.fws.gov /species_profile/SpeciesProfile?spcode=J00B   (213 words)

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