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Corpus Systématique Animale

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An electrophoretic and morphological analysis of Labiostrongylus (Labiomultiplex) uncinatus (Nematoda: Cloacinidae), with the description of a new species, L. contiguus , from Macropus parryi (Marsupialia: Macropodidae)

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  • Neil B. Chilton 1
  • Lesley R. Smales 2
  • 1) Department of Veterinary Science, University of Melbourne, 3030, Werribee, Victoria, Australia
  • 2) Faculty of Applied Science, Central Queensland University, 4702, Rockhampton, Queensland, Australia

An electrophoretic study was conducted on Labiostrongylus (Labiomultiplex) uncinatus, nematodes that occur in the stomachs of two species of Australian macropodid, Macropus dorsalis and M. parryi. The allelic profiles of these nematodes were compared to those of a morphologically distinct species, L. (Lm.) billardierii, which infests Thylogale billardierii. Nematodes were genetically characterized at 17 enzymes encoding a presumptive 18 loci. The results revealed the existence of two species, one in M. dorsalis and the other in M. parryi, that had fixed genetic differences at 72% of loci. This level of fixed difference between these species is equivalent to that when each is compared to L. billardierii (87–89%). The new species in M. parryi, Labiostrongylus contiguus n. sp., is described herein. A morphological comparison with L. uncinatus revealed slight but consistent differences in the morphology of their anterior end; namely, rectangular rather than conical shaped lateral lips, small inconspicuous, not larger hook-shaped cephalic papillae, and convex rather than flat floor of the buccal capsule for L. (Lm.) contiguus as compared with L. (Lm.) uncinatus. Differentiation of L. contiguus from L. uncinatus is more clearly demonstrated by biochemical characters than morphological ones.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - biomedical research
  • 3 - mycology & parasitology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - phytopathologie. zoologie agricole. protection des cultures et des forets
Catégories Scopus
  • 1 - Life Sciences ; 2 - Immunology and Microbiology ; 3 - Parasitology
Catégories WoS
  • 1 - science ; 2 - parasitology
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Systematic Parasitology

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