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Observations on the geographical distribution and morphometrics of Enoploides stewarti Nicholas, 1993 (Nematoda ; Thoracostomopsidae)
Nicholas, W.L.; Marples, T.G. (1995). Observations on the geographical distribution and morphometrics of Enoploides stewarti Nicholas, 1993 (Nematoda ; Thoracostomopsidae). Bull. K. Belg. Inst. Nat. Wet. 65: 41-51
In: Bulletin. Institut Royal des Sciences Naturelles de Belgique. Mededelingen. Koninklijk Belgisch Instituut voor Natuurwetenschappen. KBIN: Brussel. ISSN 0368-0177, more
Peer reviewed article  

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  • Nicholas, W.L.
  • Marples, T.G.

Abstract
    Two populations of Enoploides stewarti Nicholas, 1993 have recently been found in freshwater, one in Lake Alexandrina and the other a new population in streams in Macquarie Island in the sub-antarctic. In the latter population the adults are distinctly larger, but otherwise morphologically indistinguishable. The statistical relationship between body lenght, indicative of size, and the growth of taxonomically significant characters, has been studied in adults and juveniles of both populations. The lenghts of pharynx, tail, spicules, labial and cephalic setae, mandible and onchium, head width, and the position of the vulva and male supplement, were measured. It is concluded that the two populations belong to the same species with a very discontinuous distribution. The value of De Man's indices is discussed.

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