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- Revision of the genus Centrophorus (Squaliformes: Centrophoridae): Part 2—Description of two new species of Centrophorus and clarification of the status of Centrophorus lusitanicus Barbosa du Bocage & de Brito Capello, 1864
- Centrophorus specimens with a distinctive long-based first dorsal fin (long-finned species) have previously been considered to be Centrophorus lusitanicus first described from Portugal. Critical examination of the original description and illustration reveal that C. lusitanicus should be considered a junior synonym of C. granulosus. However, the specimen considered to be the syntype of C. lusitanicus in the Natural History Museum in London is clearly a long-finned species and not conspecific with C. granulosus. A more detailed investigation revealed that this specimen should not be considered a syntype and was likely not originally collected off the coast of Portugal. Investigation of long-finned specimens of Centrophorus from the Indo-West Pacific and Eastern Atlantic revealed that two undescribed species exist and are herein formally described as C. lesliei and C. longipinnis. The two species are similar morphologically and belong to the long-snout Centrophorus group (e.g. C. isodon and C. harrissoni) but are clearly separable based on their very long first dorsal fins. The two species differ in relative length of the first dorsal fin and several other characters. They also differ genetically. Nonmetric multidimensional ordination based on morphometric data reveals both species level and ontogenetic differences. A short erratum is also provided for Part 1 of this revision of the Centrophorus due to two figure related errors which may cause some confusion.
- White, Ebert, Naylor
- Chimaera carophila (Chondrichthyes: Chimaeriformes: Chimaeridae), a new species of chimaera from New Zealand
- A new species of chimaeroid, Chimaera carophila sp. nov., is described from 37 specimens collected from deepwater slopes and seamounts around New Zealand. The new species is distinguished from its closest congeners, Chimaera fulva Didier et al. 2008, Chimaera macrospina Didier et al. 2008, and Chimaera obscura Didier et al. 2008, by its uniform pale-brown coloration, geographic distribution, and a combination of morphological characters, including longer dorsal and ventral caudal fin bases, a shorter first dorsal fin height, a shorter dorsal fin spine, and shorter claspers that are divided distally for one-third of their length. Chimaera carophila sp. nov. also can be distinguished from closely related species in New Zealand and Australian waters based on DNA sequence divergence of the NADH2 gene. Comparisons of body size in a large sample of specimens show considerable overlap in character ranges among congeners making species distinctions difficult. New combinations of morphometrics are suggested including ratios of head length to eye length and dorsal spine length to head length, to better distinguish among species of chimaeroids that are similar in overall appearance and size. Also, a key to New Zealand and Australian Chimaera species is provided. © 2015 Rosenstiel School of Marine & Atmospheric Science of the University of Miami., Export Date: 31 July 2015
- Kemper, Ebert, Naylor, Didier