Two new species of bamboo sharks (Orectolobiformes: Hemiscylliidae) from Western New Guinea
Gerald R. Allen and Mark V. Erdmann
aqua, International Journal of Ichthyology, pp. 93-108, Volume 13, Issue 3-4 – 23 January 2008
Two new species of hemiscylliid sharks are described from the Bird’s Head region of western New Guinea (Papua Barat Province, Indonesia). They differ from congeners on the basis of both colour patterns and DNA composition. Hemiscyllium galei is described from two specimens, 542.5-567.5 mm TL, collected at Cenderawasih Bay. The species is similar in appearance to H. freycineti, reported from areas immediately westward including the Raja Ampat Islands. The new species differs from H. freycineti in possessing white lines and spots along the margin of the large, dark dorsal saddles as well as scattered white spots, mainly on the upper side. In addition, H. galei is characterised by a row of about seven well-defined, horizontally-ovate, dark spots on the lower side between the abdomen and caudal-fin base. Hemiscyllium henryi is described from three specimens, 564.0-815.0 mm TL, collected in the vicinity of Triton Bay. It is most similar in general appearance to H. ocellatum from northern Australia, but differs in the structure of the post-cephalic ocellus (usually a pair of merged “twin-ocelli” with a poorly defined white halo) and possesses well-defined dark brown saddles/bars along the back and dorsal margin of the caudal fin as well as a dark spot at the origin of the pectoral and pelvic fins. A final difference concerns the presence of numerous small brown spots on the dorsal fins of H. ocellatum, in contrast to the mainly spotless pattern on the dorsal fins of H. henryi.
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. An annotated and illustrated catalogue of shark species known to date. Hexanchiformes to Lamniformes. FAO Fisheries Synopsis 125, 4 (1): 249 pp. FAO, Rome.
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. 1 (2): 269 pp. FAO, Rome.
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. Cephalopods, crustaceans, holothurians and sharks. Vol. 2: 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.
KAILOLA, P. J. 1987. The fishes of Papua New Guinea – a revised and annotated checklist. Volume 1. Myxinidae to Synbranchidae. Department of Fisheries and Marine Resources, Port Moresby Papua New Guinea Research Bulletin 41: 1-194.
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. 1994. Sharks and rays of Australia. CSIRO Division of Fisheries, Australia. 513 pp.
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, MA.
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.