A new species of freshwater eel <Emphasis Type="Italic">Anguilla luzonensis</Emphasis> (Teleostei: Anguillidae) from Luzon Island of the Philippines |
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| Authors: | Shun Watanabe Jun Aoyama Katsumi Tsukamoto |
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| Institution: | (1) Ocean Research Institute, The University of Tokyo, 1-15-1 Minamidai, Nakano-Ku, Tokyo 164-8639, Japan |
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| Abstract: | Anguilla luzonensis, a new species of freshwater eel, family Anguillidae, is described on the basis of 29 specimens collected from the Pinacanauan
River system, which is a tributary of the Cagayan River on northern Luzon Island of the Philippines. The new species and A. celebesensis, which is distributed in the same region, both have variegated color marking and broad maxillary bands of teeth, but show
statistically significant differences in the following characters of the new species: predorsal-fin length 28.6–33.1% of total
length (TL); preanal length 39.6–44.8% of TL; trunk length 26.4–31.3% of TL; distance between the verticals through the anus
and origin of the dorsal fin 9.3–13.9% of TL; length of gape 35.5–46.9% of head length; the total number of vertebrae 103–107;
and number of abdominal vertebrae 40–42. These morphological differences, together with the present knowledge about anguillid
eel taxonomy, genetics, and ecology, strongly support the presence of the new species A. luzonensis in the area of northern Luzon Island of the Philippines. |
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| Keywords: | Anguilla luzonensis Anguillidae Cagayan River Luzon mottled eel New species Philippines |
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