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Nematodes

BIOL 2P96 Lab Presentation
by

Nick Stanov

on 10 February 2012

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Transcript of Nematodes

Phylum Nematoda By: Nick Stanov BIOL 2P92 Principles of Zoology Classification diecious
marine, fresh water and terrestrial
roundworm
cylindrical shape
lack of flagella
thick cuticle
longitudinal muscle
hydrostatic skeleton Characteristics Invertebrate Parasites: Ancylostoma duodenale & Necator americanus
anterior end hook-like
plates in mouth attach to intenstinal tract
pump blood out of host
causes anemia
children at highest risk
eggs released into feces

Hookworms Parasitic Forms in Humans Trichinella spiralis
one of the largest intracellular parasites
burrow in mucosa of intestine
offspring are released into blood vessels
form cysts in muscle
effects gene expression in host
causes trichinosis
can lead to death Trichina Worm Enterbius vermicularis
most common nematode parasite
live in large intestine and cecum
lay eggs in anal region
causes itching Pinworms Domain:
Eukarya Kingdom:
Animailia Phylum:
Nematoa Clade: Nematoida Ecdysozoans up to 1m in length
mostly microscopic anterior end
various mouth structures
complete digestive system
Wuchereria bancrofti and Brugia malayi
transferred by mosquitoes
live in lymphatic tissue
females release microfilariae into bloodstream/lymph tissue
causes heartworms, river blindness or elephantiasis Filarial Worms Parasitic Forms in Plants Rotylenchulus reniformis
endoparasite
feeds on culivated/uncultivated plants
juvenile stage in soil
adult stage in plant roots
causes root rotting and reduced water uptake Reniform Nematode http://farm1.static.flickr.com/208/509697948_d045dddea0.jpg http://ucanr.org/sites/UCNFAnews/files/123945display.jpg http://www.cotton.org/foundation/2006-07/Projects/images/06cfARgenprojnematode_3.jpg Dagger Nematode Xiphinema
ectoparasite
feed on the roots of many plants
causes swollen roots
reduced plant nutrients
reduced plant yield

http://cdn-www.cracked.com/articleimages/dan/parasites/filarial.jpg http://wikieducator.org/images/4/4e/Filariasis.jpg http://lhsvirtualzoo.wikispaces.com/file/view/filarial_worm_in_eye.gif/210798894/filarial_worm_in_eye.gif http://bragwebdesign.com/wpress/wp-content/uploads/dimmitis.jpg Common Characteristics
plates in mouth
endoparasitic
tend to be the largest http://whatcom.wsu.edu/ipm/manual/rasp/images/Dagger_Nematode.jpg http://www.omafra.gov.on.ca/english/crops/facts/06-099f3.jpg Predators of Nematodes PARASITIC http://www.globalhealingcenter.com/media/pinworms_middle.jpg http://www.healblog.net/wp-content/uploads/where-to-buy-reese.jpg http://upload.wikimedia.org/wikipedia/commons/e/e6/Trichinella_LifeCycle.gif http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/2638.jpg http://www.extension.org/mediawiki/files/a/a7/Trichinella_usda.jpg http://micro.magnet.fsu.edu/primer/techniques/fluorescence/gallery/images/trichinawormsmall.jpg http://scienceblogs.com/oscillator/Hookworm.jpg http://scienceblogs.com/oscillator/Hookworm.jpg http://3.bp.blogspot.com/_JgQn1SKn4Q4/TSCm8l2FBdI/AAAAAAAAAF0/Jnzu_n0E91A/s320/Hookworm_LifeCycle.gif http://news.bbc.co.uk/olmedia/1630000/images/_1632863_300hookworm.jpg http://2.bp.blogspot.com/-_rm4gbUKgYM/TdMPByr1YdI/AAAAAAAABE4/4piDkJkL_t0/s1600/nematodes.jpg http://www.personal.psu.edu/ncj111/images/phylogeny.jpg http://bioweb.uwlax.edu/bio203/s2009/nelson_rac3/images/tree.gif http://nemidsoft.com/Nematode/UserFiles/images/nematode.gif http://terroirists.files.wordpress.com/2010/06/nematodes_gregtylka.jpg Common Characteristics
endoparasitic/ectoparasitic
stylet in mouth Hickman et al. (2011). Integrated principles of zoology (15th ed.). New York, United States: McGraw-Hill.

Laughlin, C. W. (1998). Plant-parasitic nematodes and their management. Retrieved from http://www.ctahr.hawaii.edu/oc/freepubs/pdf/pd-15.pdf.

Villate et al. (2008). Spatial distribution of the dagger nematode xiphinema index and its associated fanleaf virus in French vineyards. Phythopathology, 98 (8), 942-948. References
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