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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Two new species of short-snouted dogfish sharks of the genus Squalus Linnaeus, 1758, from southern Africa (Chondrichthyes: Squaliformes: Squalidae)

Texto completo
Autor(es):
Viana, Sarah T. de F. L. [1] ; Lisher, Mark W. [2] ; de Carvalho, Marcelo R. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, Rua Matao, Travessa 14, 101, BR-05508090 Sao Paulo, SP - Brazil
[2] South African Inst Aquat Biodivers, Somerset St, ZA-6140 Grahamstown, EC - South Africa
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: MARINE BIODIVERSITY; v. 48, n. 4, p. 1787-1814, DEC 2018.
Citações Web of Science: 4
Resumo

Species composition of the genus Squalus from the eastern Atlantic and western Indian oceans is still poorly known, with three to four species often recognized: S. acanthias, S. megalops, S. blainvillei, and S. mitsukurii. A fifth species, S. acutipinnis, was recently redescribed as valid in the region, although morphological variation was noted among its type specimens that indicated the presence of two different forms. The second form is described herein as Squalus margaretsmithae sp. nov. and distinguished from S. acutipinnis based on external morphological characters. Squalus mahia sp. nov. is also described from southern Africa based mostly on material collected from Madagascar. Squalus mahia sp. nov. stands out from other Squalus species by having a conspicuously slender body, elongate and thin dorsal fin spines, narrow caudal fin, and other external proportions. These two species are often misidentified with the Australian S. megalops because they share a short snout, white postventral caudal margins, lanceolate and unicuspid dermal denticles, and a low number of vertebrae. Comparative analyses are provided here between Squalus margaretsmithae sp. nov., Squalus mahia sp. nov., and morphologically similar species that also share these features, including S. brevirostris, S. crassispinus, S. acutipinnis, S. altipinnis, and S. hemipinnis. A taxonomic evaluation of the nominal species S. megalops and its occurrence in the region is also discussed. (AU)

Processo FAPESP: 11/18861-7 - Revisão taxonômica e morfológica da família Squalidae Blainville, 1816 (Elasmobranchii: Chondrichthyes: Squaliformes)
Beneficiário:Sarah Tházia Viana de Figueirêdo
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 14/26503-1 - Revisão taxonômica de espécies da família Squalidae Blainville, 1816 (Elasmobranchii: Chondrichthyes: Squaliformes) da África meridional
Beneficiário:Sarah Tházia Viana de Figueirêdo
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado