gastrotrich

Also found in: Dictionary, Encyclopedia, Wikipedia.

gastrotrich

any minute aquatic multicellur animal of the phylum Gastrotricha, comprising unsegmented, worm-like organisms whose locomotion is brought about by epidermal cilia. They have some affinities with ROTIFIERS and NEMATODES.

Mentioned in ?

aschelminth

References in periodicals archive ?

Accepted morphological homologies supporting gastrotrich monophyly include the presence of unique, cuticle-covered duo-gland adhesive organs (Tyler and Rieger, 1980), a multilayered epicuticle (Rieger and Rieger, 1977), and cuticle-covered locomotory and sensory cilia (Rieger and Rieger, 1977).

We have analyzed relationships of nearly all known gastrotrich genera and evaluated them using parsimony analysis (PAUP 4.

Phylogeny of Gastrotricha: a Morphology-Based Framework of Gastrotrich Relationships

Nematodes, nauplii larvae, copepods, acari and gastrotrichs were recorded at all stations.

Composition and vertical distribution of metazoan meiofauna assemblages on the continental shelf off central Chile/Composicion y distribucion vertical de los ensambles de meiofauna metazoaria en la plataforma continental frente a Chile central

The absence of a true midpiece evolved convergently in different metazoan phyla such as gastrotrichs (Marotta et al.

Spermatozoa and sperm aggregates in the vestimentiferan Lamellibrachia luymesi compared with those of Riftia pachyptila (Polychaeta: Siboglinidae: Vestimentifera)

A test of this idea might be to look for the expression of members of this gene family in the pharyngeal pores of macrodasyid gastrotrichs (Ruppert and Barnes, 1994) to see if the gene is responsible for pores or openings in the pharynx in general, rather than having an expression that is specific to deuterostome gill pores.

Particle retention and flow in the pharynx of the enteropneust worm Harrimania planktophilus: the filter-feeding pharynx may have evolved before the chordates

Oblique striation has been described for muscles of platyhelminths, nematodes, gastrotrichs, nematomorphs, priapulids, pogonophora, chaetognathes, annelids, molluscs, brachiopods, and an echinoderm (3-7, 9), and dense bodies are an obvious feature in all taxa.