Busca avançada
Ano de início
Entree
(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.)

A shocking discovery of threat risks on newly described species of weakly electric fishes

Texto completo
Autor(es):
Tagliacollo, Victor A. [1] ; Camelier, Priscila [2] ; Zanata, Angela M. [2] ; Reis, Roberto E. [3]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Museu Zool, Ipiranga, SP - Brazil
[2] Univ Fed Bahia, Inst Biol, Salvador, BA - Brazil
[3] Pontificia Univ Catolica Rio Grande do Sul, Av Ipiranga, Porto Alegre, RS - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Journal of Fish Biology; JULY 2019.
Citações Web of Science: 0
Resumo

This study aims to investigate relationships between species traits and publication date in the weakly electric osteoglossiform Mormyroidea (African knifefish and elephantfishes) and the ostariophysan Gymnotiformes (Neotropical knifefishes). It is investigated whether body size and geographic distribution area are correlated with publication date and whether extinction risk differs between both phylogenetically distant and geographically isolated clades. Statistical modelling indicates that the number of new species described annually is stable in mormyroids and clearly increasing in gymnotiforms. Best-fitting generalised linear models (GLM) indicate that the newly discovered species are more often of small-bodied, predominantly narrowly distributed and more likely to be threatened with extinction. These characteristics are more pronounced in mormyroids when compared with gymnotiforms, suggesting that some African electric fishes may live an ephemeral existence after formal description. Despite taxonomic work has been more intense in the Neotropics than in Africa in the recent decades, there is evidence that the African continent represents the next frontier of species descriptions. Taxonomic studies are fundamental for the understanding of richness and distribution and hence extinction risk assessment and conservation, of these remarkable convergent fish clades. (AU)

Processo FAPESP: 16/19075-9 - Diversidade e evolução de Gymnotiformes (Teleostei, Ostariophysi)
Beneficiário:Naércio Aquino Menezes
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 18/20806-3 - Biogeografia neotropical: distribuições históricas de Characiformes (Actinopterygii, Ostariophysi)
Beneficiário:Victor Alberto Tagliacollo
Linha de fomento: Bolsas no Brasil - Pós-Doutorado