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Hydrobiologia

, Volume 474, Issue 1–3, pp 171–182 | Cite as

The relation between habitus and habitat structure as evidenced by a new species of Glochinema (Nematoda, Epsilonematidae) from the plateau of the Great Meteor Seamount1

  • Gunnar Gad
Article

Abstract

Glochinema kentrosaurides sp. n. is described from coarse biogenic sands on the plateau of the Great Meteor Seamount at 455 m depth. It is characterized by two rows of 12 long thorns between the caudal body enlargement and the tail base, by two bands of hair-like spines dorsally on the body enlargement, by a diverse waffle-like ornamentation of the cuticle, by a pair of small dorsal pharyngeal thorns, by five to six rows of ambulatory setae adding up to a total of 28 setae in the male and 24 in the female, and by a sexual dimorphism in the form of the amphids. It is the first record of Glochinematinae from the Atlantic, all others being known from the Pacific so far. The distinguishing features of all species of Glochinema Lorenzen, 1974 are summarized. The new species blurs the distinction between the genera Glochinema and Metaglochinema Gourbault & Decraemer, 1996. It is discussed that some of the salient external features may have less systematic importance than hitherto believed because of their variation in response to habitat structure.

Glochinema kentrosaurides Epsilonematidae Meiofauna Great Meteor Seamount south Atlantic Ocean Meteor Cruise M 42/3 

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Gunnar Gad
    • 1
  1. 1.AG Zoosystematik und Morphologie, Fachbereich 7; Biologie, Geo & UmweltwissenschaftenCarl von Ossietzky Universität OldenburgOldenburgGermany

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