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