jueves, 12 de abril de 2012

Nematodes

The nematodes or roundworms are the most diverse phylum of pseudocoelomates. Nematode species are very difficult to distinguish. Unlike cnidarians or flatworms (Plathelminthes), roundworms have tubular digestive systems with openings at both ends.
Nematodes are successfully adapted to nearly every ecosystem from marine to fresh water, to soils, and from the polar regions to the tropic, as well as highest to the lowest of elevations. There are parasitic forms, including pathogens in most plants and animals. Some nematodes can undergo cryptobiosis.
Nematodes are slender and typically less than 2.5 mm long. The body is often ornamented with rings, warts or other distinctive structures.
Most nematode species are dioecious, with separate male and female individuals.
Nematodes commonly parasitic on humans include Ascaris, filarias, hookworms, Enterobius, Trichuris trichiura.

4 comentarios:

  1. Nice darling! Check my blog and...maybe you wanna folloow each other? kisses from Romania ;)

    FashionSpot.ro

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  2. Oh, no se tanto ingles como para entender este post :(
    Me preguntaste si estaba de vacaciones, pues no, lamentablemente, jeje! Es que empece la semana pasada el tercer año de facultad y hasta acomodarme y todo vengo algo corta de tiempo...

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  3. Me pasa como a Paulii, que mi ingles no me da para tanto, estoy super liada, cuando venga mi hija que me lo lea, por que no puedo entretenerme. Muaks, y gracias por comentar en mi blog.

    www.carmenhummer.com

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  4. Yo me pregunto, que tienen que ver los gusanos con tu blog, aún no termino de entender esta entrada, quizás sea un poco cortita pero, me he perdido algo?.
    Besos

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