Abstract
North Pacific Pseudoscopelus sagamianus (from the Kuroshio zone) are characterized morphologically in detail. The neotype is established. The North Pacific population and the group of populations from the Atlantic and Indian oceans are compared in detail, significant differences are found between them in coloration of the orobranchial cavity and in the pattern of photophores of series trf and prcf. In the author’s opinion, these differences are of the subspecies level. Potential areas of subspecies are discussed, and the area of the whole species is verified. A possibility of validity of the name P. pierbartus Spitz et al., 2007, for the group of populations from the Atlantic and Indian oceans is considered. Additions and changes to methods of investigations of Pseudoscopelus suggested by Melo et al. (2007) are critically discussed.
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Original Russian Text © A.M. Prokofiev, 2009, published in Voprosy Ikhtiologii, 2009, Vol. 49, No. 1, pp. 15–27.
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Prokofiev, A.M. Pseudoscopelus sagamianus Tanaka, 1908 (Chiasmodontidae): Designation of the neotype, morphological characteristics of the North Pacific population, and species variation within its whole area. J. Ichthyol. 49, 10–22 (2009). https://doi.org/10.1134/S0032945209010020
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DOI: https://doi.org/10.1134/S0032945209010020