How many species are there in phylum Nematoda?

Nematodes, as members of the phylum Nemata (or Nematoda), are one of the most abundant groups of invertebrates on earth and rival the Arthropoda in biodiversity and species abundance. While some 20,000 nematode species have been described, estimates for species diversity range from 100,000 to 10 million (Poinar, 2011).

What phylum do nematodes belong to?

Roundworms: Phylum Nematoda. Species in the phylum Nematoda (from the Greek root word nema meaning thread) are better known as the roundworms (Fig. 3.41). There are about 25,000 species of nematodes formally described by scientists.

Which level of classification is Nematoda?

Integrated Taxonomic Information System – Report

Phylum Nematoda – nematódeo, nemátodo, nematóide
Direct Children:
Class Chromadorea
Class Dorylaimea
Class Enoplea

What is the genus of a nematode?

Capillaria – Genus of roundworms.

Is Earthworm a nematode?

Invertebrate animals commonly called “worms” include annelids (earthworms and marine polychaete or bristle worms), nematodes (roundworms), platyhelminthes (flatworms), marine nemertean worms (“bootlace worms”), marine Chaetognatha (arrow worms), priapulid worms, and insect larvae such as grubs and maggots.

What are the three basic groups of nematodes?

Soil Nematodes

  • Bacterial-feeders consume bacteria.
  • Fungal-feeders feed by puncturing the cell wall of fungi and sucking out the internal contents.
  • Predatory nematodes eat all types of nematodes and protozoa.
  • Omnivores eat a variety of organisms or may have a different diet at each life stage.

What are the two classes of phylum Nematoda?

The phylum Nematoda is divided into two classes, Adenophorea and Secernentea. The main basis for this subdivision is the absence (Adenophorea) or presence (Secernentea) of the phasmid sensory organ described in the Roundworms: Characteristics (Advanced) concept. Most Adenophorea are non-parasitic.

What is the sister group to nematodes?

Trees from phylogenetic analyses using maximum likelihood and Bayesian methods depicted Plectida as the sister group to other sequenced chromadorean nematodes.

What is the meaning of phylum Nematoda?

Definition of nematode : any of a phylum (Nematoda or Nemata) of elongated cylindrical worms parasitic in animals or plants or free-living in soil or water. — called also roundworm.

What genus do worms belong to?

genus Lumbricus
earthworm, also called angleworm, any one of more than 1,800 species of terrestrial worms of the class Oligochaeta (phylum Annelida)—in particular, members of the genus Lumbricus.

Is tapeworm a nematode?

The helminths are invertebrates characterized by elongated, flat or round bodies. In medically oriented schemes the flatworms or platyhelminths (platy from the Greek root meaning “flat”) include flukes and tapeworms. Roundworms are nematodes (nemato from the Greek root meaning “thread”).