Hemiscyllium michaeli, a new species of Bamboo Shark (Hemiscyllidae) from Papua New Guinea
Gerald R. Allen and Christine L. Dudgeon
aqua, International Journal of Ichthyology, pp. 19-30, Volume 16, Issue 1 – 20 January 2010
Hemiscyllium michaeli new species is described from six specimens, 257-695 mm TL, collected at eastern Papua New Guinea. The species was previously confused with H. freycineti, which is restricted to Papua Barat Province (western New Guinea), Indonesia. The two species differ primarily in colour pattern, which provides the best means of separating the various members of the genus. Both species have a profuse covering of brown spots with a large black or brown ocellated marking on the middle of the side, just behind the head. The spots of H. michaeli n. sp. are generally denser, larger, and distinctly polygonal, remarkably similar to the spots of a leopard. In contrast those of H. freycineti are round to transversely elongate and are darkened at regular intervals to form 8-9 bars or saddle-like markings (including those on the tail). The difference in spot pattern between the two species is particularly evident in the head region. In addition, H. michaeli n. sp. possesses a vivid ocellate black spot behind the head, whereas the black spot of H. freycineti is generally not well defined. Comparison of the mitochondrial ND4 gene also supports the species-level separation of these species.
ALLEN, G. R. & ERDMANN, M. V. 2008. Two new species of bamboo sharks (Orectolobiformes: Hemiscyllidae) from western New Guinea. aqua, International Journal of Ichthyology 13(3-4): 93-108.
AREVALO, E., DAVIS, S. K. & SITES, J. W. 1994. Mitochondrial- DNA sequence divergence and phylogeneticrelationships among eight chromosome races of the Sceloporus–Grammicus complex (Phrynosomatide) in central Mexico. Systematic Biology 43: 387-418.
COMPAGNO, L. J. V. 1984. FAO species catalogue. Volume 4. An annotated and illustrated catalogue of shark species known to date. Part 1. Hexanchiformes to Lamniformes. FAO Fisheries Synopsis 125, Volume 4, Part 1. FAO, Rome, 249 pp.
COMPAGNO, L. J. V. 2001. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Volume 2. Bullhead, mackerel and carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes). FAO Species Catalogue for Fishery Purposes. No. 1, Vol. 2. FAO, Rome, 269 pp.
COMPAGNO, L. J. V. & NIEM, V. H. 1998. Hemiscylliidae. In: FAO species identification guide for fishery purposes. The living marine resources of the western central Pacific. Vol. 2. Cephalopods, crustaceans, holothurians and sharks. (Eds. Carpenter, K.E. & Niem, V.H.): 1249-1259. FAO, Rome.
DINGERKUS, G. & DEFINO, T. C. 1983. A revision of the orectolobiform shark family Hemiscyllidae (Chondrichthyes. Selachii). Bulletin of the American Museum of Natural History 176(1): 1-94.
FELSENSTEIN, J. 1985. Confidence limits on phylogenies: an approach using the bootstrap. Evolution 39: 783-791.
INOUE, J. G., MIYA, M., TSUKAMOTO, K. & NISHIDA, M. 2001. A mitogenomic perspective on the basal teleostean phylogeny: Resolving higher-level relationships with longer DNA sequences. Molecular Phylogenetics and Evolution 20: 275-285.
KUMAR, S., TAMURA, K. & NEI, M. 2004. MEGA3: Integrated software for Molecular Genetic Analysis and sequence. Briefings in Bioinformatics 5: 150-163.
LAST, P. R. & STEVENS, J. D. 2009. Sharks and rays of Australia. Second edition. CSIRO Division of Fisheries, Australia. 656 pp.
MÜLLER, J. & HENLE, F.G.J. 1837. Ueber die Gattungen der Plagiostomen. Archiv für Natur geschichte 3: 394-401, 434.
MÜLLER, J. & HENLE, F.G.J. 1838. On the generic characters of cartilaginous fishes, with descriptions of new genera. Magazine of Natural History (new series) 2: 33-37, 88-91.
POSADA, D. & CRANDALL, K. A. 1998. Modeltest: testing the model of DNA substitution. Bioinformatics 14: 817-818.
SWOFFORD, D. L. 1998. PAUP: Phylogenetic analysis using parsimony and other methods. Sinauer Associates, Sunderland.
TAMURA, K. & NEI, M. 1993. Estimation of the number of nucleotide substitutions in the contral region of mitochondrial DNA in humans and chimpanzees. Molecular Biology and Evolution 10: 512-526.