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The "roundworms" or "nematodes" (phylum Nematoda) are the most diverse phylum of pseudocoelomates, and one of the most diverse of all animals. Nematode species are very difficult to distinguish; over 28,000 have been described, of which over 16,000 are parasitic. It has been estimated that the total number of described and undescribed roundworms might be more than 500,000. Unlike cnidarians or flatworms, roundworms have a digestive system that is like a tube with openings at both ends. HabitatsNematodes have successfully adapted to nearly every ecological niche from marine to fresh water, from the polar regions to the tropics, as well as the highest to the lowest of elevations. They are ubiquitous in freshwater, marine, and terrestrial environments, where they often outnumber other animals in both individual and species counts, and are found in locations as diverse as Antarctica and oceanic trenches. They represent, for example, 90% of all life on the seafloor of the Earth. Their many parasitic forms include pathogens in most plants and animals (including humans.) Some nematodes can undergo cryptobiosis. From Wikipedia under the
GNU Free Documentation License  vet.ed.ac.uk 636px x 1124px | 86.50kB [source page] Signposting for lecture on nematodes A JPG file created from a Mind Genius map Incorporated into a PowerPoint presentation used in a BVM S lecture on nematodes Hyperlinks are  umassturf.org 100px x 595px | 8.20kB [source page] mailing list jpg 14 Jul 2006 19 07 6 8K mgmt updates jpg 14 Jul 2006 19 07 7 9K nematodes jpg 14 Jul 2006 19 07 8 2K nematodes services jpg 14 Jul 2006 19 07 6 2K  naturescontrol.com 640px x 463px | 118.60kB [source page] click to enlarge Double Death Predator Nematodes Kill Thrips Larvae Hatching In Soil From Yahoo Image Search: "Nematodes"  bugladyconsulting.blogspot.com buglady ue, 09 Jun 2009 16:49:00 GM Plant parasitic . nematodes. better watch out! After many years of waiting, Pasteuria usgae is now registered with the EPA. Pasteuria Bioscience developed the technology to be able to rear the Pasteuria on a large economically feasible ...  nemablog.wordpress.com nemablog Wed, 24 Dec 2008 20:11:40 GM The World of . Nematodes. · Blog · About · Christmas in McMurdo. December 25, 2008 at 9:11 am | In Field Season | 2 Comments. Holidays in McMurdo are pretty similar to holidays anywhere else, but with a certain Antarctic twist. ...  badenochtoch.wordpress.com cardinalfreedom Sun, 06 Dec 2009 23:42:04 GM Nematodes. , their are so many species of . nematodes. it is mind boggling, however today we're focusing on one classification of . nematode. , the parasitic type. In high enough quantities plant-parasitic . nematodes. can cause turf to turn yellow ... From Google Blog Search: "Nematodes"  news.google.com National Geographic After feeding a light-sensitive chemical to transparent, microscopic worms called nematodes , scientists at Simon Fraser University in British Columbia were ... Lab worms are stunned by 'phaser' BBC News Scientists develop 'Star Trek phaser' TG Daily Zap! Light used to paralyze tiny creatures msnbc.com Discover Magazine all 72 news articles » news.google.com Western Farm Press This project will be the latest in a concerted effort to develop rootstocks that are resistant to a wide array of soilborne pathogens, such as nematodes , ... news.google.com MSN Money In 2008, the program released five new grape rootstocks with resistance to nematodes and phylloxera two of the industry's most damaging vineyard pests. ... and more » From Google News Search: "Nematodes" How to get rid of nematodes? Q. I have nematodes in my garden bed and they are playing havoc with my tomatoes, so bad that they didnt get any higher than a stunted 25" and fruited but what a joke that was. I pulled them up and instantly saw the nasty, swollen, short root system and knew it was nematodes. Does anyone know of a safe way to get rid of these that wont cost a fortune from a nursery. Asked by Big red - Fri Mar 9 13:41:04 2007 - - 3 Answers - 0 Comments A. They are a tough problem to deal with, but there are a few practices that can help control their populations. Fallow: Letting the soil sit fallow during the off-season is probably the single most important and effective cultural control measure available for nematodes. When food sources are no longer readily available, soil population densities of nematodes gradually decline with death occurring as a result of starvation. Due to the wide host range of many nematode species, weeds and crop volunteers must be controlled during the fallow period to prevent nematode reproduction and further population increase. The soil will need to be turned over at least twice during the fallow cycle. Soil Amendments: Many different types of amendments… [cont.] Answered by Karl - Fri Mar 9 14:18:54 2007 Are Beneficial Predatory Nematodes effective in fight against slugs and grubs? Q. I have a large population of mature slugs and grubs in my flower and vegetable garden. The slugs are approximately 2" in diameter and 4" long. The white grubs are about 2" long. I have read that predatory nematodes are effective against slugs and grubs, but am nervous about introducing a different species into the area. Has anyone tried these? Have they been effective? Thank you for all your tips and suggestions. Please, only reliable and knowledgeable sources. Thanks again!! Asked by Corry - Tue May 29 17:24:24 2007 - - 3 Answers - 0 Comments A. As "Ed Snow" mentioned in his response, parasitic nematodes that control slugs and snails are short-lived and work best when temperatures exceed 40-degrees. Their life-span is about 6 weeks if they haven't found a host (snail or slug) to reproduce within. The parasitic nematode of slugs -(called Phasmarhabditis Hermaphrodita), enters the slug through the slug mantle. Once inside, the nematode releases a bacterium which multiply and this is what the nematode feeds on. The nematodes multiply and within 4 to 7 days the slug stops feeding and will burrow underground to die. These nematodes do not pose a threat to earthworms. In fact, there's no concern about beneficial nematodes becoming a problem in your garden or causing harm to your… [cont.] Answered by jazzmaninca2003 - Wed May 30 09:59:56 2007 Which one of these serve as a host for parasitic nematodes?
Q. Snail, leeches,oyster,earthworm. ..more than one answer might be true, Im trusting you guys on this, dont just give any answer please! Asked by Steve - Thu Nov 16 18:04:22 2006 - - 2 Answers - 0 Comments A. Snails certainly do, I'm not sure about the others. Answered by silverbirch - Thu Nov 16 18:06:28 2006 From Yahoo Answer Search: "Nematodes" See also:
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