日本語: 扁形動物門. Nordfriisk: Platwirmer polski: Płazińce português: Platelmintes/Platelmintos русский: Плоские черви slovenčina: Ploskavce. Filum Braquiópodos Cordata Sipuncúlidos Ectoproctos Filum Anélido. Platelmintos Filum Eumicetes Filum Briofita. Filum Asquelmintes. Moluscos Celenterados. Los rabditóforos (Rhabditophora) son una clase de “gusanos planos” de vida libre, del filo platelmintos. El clado Rhabditophora fue erigido originalmente por.
|Genre:||Health and Food|
|Published (Last):||13 October 2018|
|PDF File Size:||18.48 Mb|
|ePub File Size:||12.34 Mb|
|Price:||Free* [*Free Regsitration Required]|
Some flatworms are parasites, while others are free-living carnivores or scavengers. Flatworms have only a mouth for both food and wastes. The planarian is the most common free-living flatworm found in water or moist places.
They are hermaphrodites producing both eggs and sperm, but they exchange sperm with each other during sexual reproduction. Planarians also reproduce asexually by fragmentation.
Flatworms include a large number of parasitic forms, some of which are extremely damaging to human populations. Examples of parasitic flatworms are flukes and tapeworms.
Tapeworms are divided into sections called proglottids that each have a complete reproductive system producing fertilized eggs. Tapeworms are hermaphroditic one body having both sexual partsand they fertilize their own eggs.
Ripe proglottids with their eggs pass out with the host’s feces. Tapeworms anterior end is platelmintoss the scolex and is modified with both hooks and suckers to attach to the host’s intestines. Humans most often get tapeworms from infected, undercooked pork, beef or fish. Flukes have complex life cycles that involve more than one host.
A fluke causes Schistosomiasis, a disease that affects million people world wide. The most common flatworm in our rivers is the Planaria. The Planarias have a great capacity fioum regeneration.
They are very fragile and when they are broken, each one of fragments regenerates the part that it lack. Another one of the species common in mountain streams with current forts is the Dugesia that has arrow form. It is a very sensible species to the contamination of waters.
FILUM PLATELMINTOS by Sthesy soto culque on Prezi
Just as the plztelmintos also it has great capacity of regeneration, being able to generate the complete animal from a small fragment. The phylum Platyhelminthes are the flatworms. They are dorsoventrally flattened and have bilateral symmetry.