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  • Kristensen (1983)
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dct:title
  • Kristensen (1983)
dct:abstract
  • A new phylum, LORICIFERA, in the Animal Kingdom is described from the meiobenthos. All stages of the type species NANATORICUS MYSTICUS gen. et sp. nov. are from shelly gravel, Roscoff, France (25-30 m depth) and Fort Pierce, Florida, USA (15 m depth). The aberrant larva, called a Higgins-larva, is found at 480 m depth in shelly gravel near the Azores Islands [Portugal]. Two other undescribed species of Nanaloricus were found in amphioxus sand near Helsingor, Denmark (10-12 m) and Godhavn, western Greenland (110 m depth). A single Higgins-larva and an exuvium perhaps belonging to another genus were found intertidally in coralline gravel from the Chesterfield Reefs, Coral Sea. Still another representative of this phylum has been found off the coast of North Carolina, USA. The larvae, postlarvae and the adults have a spiny introvert and a lorica. At least 2 larval stages (100-135 .mu.m and 158-185 .mu.m) are present. Female and male have the same size (227-235 .mu.m), but sexual dimorphism is present in the 1st row of 8 scalids, the clavoscalids. Paired ovaria are present in the female and paired testes are present in the male. The Higgins-larva has a simple unarmed mouth cone and an introvert with 7-8 rows of scalids. The 1st row has 8 clavoscalids. The next 4-5 rows consist dorsally of spinoscalids similar to those found in kinorhynchs. The 2 last rows of dorsal scalids are of the priapulid-type. Ventrally, all scalids are hook-shaped as found in the larva of the Nematomorpha. Sense organs (2-4), trichoscalids, are found ventrally. One club-shaped sense organ is present middorsally on the introvert. The neck or thorax consists of 5-6 rows of plates. Two ventral plates in the 1st row are large and constitute a closing apparatus, when the introvert is retracted. The lorica of the larva is strongly folded longitudinally. Dorso-caudally, 5 small plates are present. Three of the plates each have single floscula. Caudally 2 pairs of long sensory hairs are present.
bibo:abstract
  • A new phylum, LORICIFERA, in the Animal Kingdom is described from the meiobenthos. All stages of the type species NANATORICUS MYSTICUS gen. et sp. nov. are from shelly gravel, Roscoff, France (25-30 m depth) and Fort Pierce, Florida, USA (15 m depth). The aberrant larva, called a Higgins-larva, is found at 480 m depth in shelly gravel near the Azores Islands [Portugal]. Two other undescribed species of Nanaloricus were found in amphioxus sand near Helsingor, Denmark (10-12 m) and Godhavn, western Greenland (110 m depth). A single Higgins-larva and an exuvium perhaps belonging to another genus were found intertidally in coralline gravel from the Chesterfield Reefs, Coral Sea. Still another representative of this phylum has been found off the coast of North Carolina, USA. The larvae, postlarvae and the adults have a spiny introvert and a lorica. At least 2 larval stages (100-135 .mu.m and 158-185 .mu.m) are present. Female and male have the same size (227-235 .mu.m), but sexual dimorphism is present in the 1st row of 8 scalids, the clavoscalids. Paired ovaria are present in the female and paired testes are present in the male. The Higgins-larva has a simple unarmed mouth cone and an introvert with 7-8 rows of scalids. The 1st row has 8 clavoscalids. The next 4-5 rows consist dorsally of spinoscalids similar to those found in kinorhynchs. The 2 last rows of dorsal scalids are of the priapulid-type. Ventrally, all scalids are hook-shaped as found in the larva of the Nematomorpha. Sense organs (2-4), trichoscalids, are found ventrally. One club-shaped sense organ is present middorsally on the introvert. The neck or thorax consists of 5-6 rows of plates. Two ventral plates in the 1st row are large and constitute a closing apparatus, when the introvert is retracted. The lorica of the larva is strongly folded longitudinally. Dorso-caudally, 5 small plates are present. Three of the plates each have single floscula. Caudally 2 pairs of long sensory hairs are present.
dct:issued
dct:bibliographicCitation
  • Kristensen, R. 1983. Loricifera, a new phylum with Aschelminthes characters from the meiobenthos. <em>Zeitschrift fuer Zoologische Systematik und Evolutionsforschung</em>, 21(3): 163-180.
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