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Type: Article
Published: 2007-11-02
Page range: 23–41
Abstract views: 39
PDF downloaded: 1

Huffmanela spp. (Nematoda, Trichosomoididae) parasites in coral reef fishes off New Caledonia, with descriptions of H. balista n. sp. and H. longa n. sp.

Équipe Biogéographie Marine Tropicale, Unité Systématique, Adaptation, Évolution (CNRS, UPMC, MNHN, IRD), Institut de Recherche pour le Développement, BP A5, 98848 Nouméa Cedex, Nouvelle Calédonie
Nematoda Trichosomoididae Huffmanelinae Huffmanela balista n. sp. Huffmanela longa n. sp. Huffmanela branchialis Justine 2004 Huffmanela ossicola Justine Huffmanela mexicana Moravec et Fajer-Avila 2000 New Caledonia fish Abalistes stella

Abstract

Two new species of Huffmanela Moravec, 1987 are described from coral reef fishes caught off New Caledonia, South Pacific. H. balista n. sp. is described from the adults and eggs found in the swimbladder wall of a single Abalistes stellatus (Balistidae). The male, 9.9 mm long, has characteristic spermatids and spermatozoa. The female has a characteristic cuticularised anterior oesophagus. The eggs (70 × 34 µm) spontaneously hatch and release larvae, 260 µm long. H. longa n. sp. is described from a single female and from eggs collected in the mesentery, swimbladder and body walls of three Gymnocranius grandoculis (Lethrinidae). The female, although immature, is the longest (20.7 mm) of all species of the genus. The eggs (66 × 27 µm) have superficial filaments, and are differentiated from those of H. filamentosa Justine, 2004 from the same host, by their greater measurements. Eggs of Huffmanela mexicana Moravec et Fajer-Avila, 2000, are redescribed for comparison. The host of Huffmanela sp. of Justine, 2004, is identified as Pentapodus aureofasciatus. New observations on H. ossicola Justine, 2004 are reported, including new hosts (Bodianus busellatus and B. perditio), comparative measurements of eggs in various hosts and organs, description of larvae, 228 µm in length, and X-ray observations of the skeleton of an infected fish.

References

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