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.)

Cytogenetics, genomics and biodiversity of the South American and African Arapaimidae fish family (Teleostei, Osteoglossiformes)

Texto completo
Autor(es):
Mostrar menos -
de Oliveira, Ezequiel Aguiar [1, 2] ; Carlos Bertollo, Luiz Antonio [2] ; Rab, Petr [3] ; Ezaz, Tariq [4] ; Yano, Cassia Fernanda [2] ; Hatanaka, Terumi [2] ; Jegede, Oladele Ilesanmi [5] ; Tanomtong, Alongklod [6] ; Liehr, Thomas [7] ; Sember, Alexandr [3] ; Maruyama, Sandra Regina [2] ; Feldberg, Eliana [8] ; Viana, Patrik Ferreira [8] ; Cioffiid, Marcelo de Bello [2]
Número total de Autores: 14
Afiliação do(s) autor(es):
[1] Secretaria Estado Educ Mato Grosso SEDUC MT, Cuiaba, MT - Brazil
[2] Univ Fed Sao Carlos, Dept Genet & Evolucao, Rodovia Washington Luiz, Sao Carlos, SP - Brazil
[3] Czech Acad Sci, Inst Anim Physiol & Genet, Lab Fish Genet, Prague - Czech Republic
[4] Univ Canberra, Inst Appl Ecol, Canberra, ACT - Australia
[5] Adamawa State Univ, Dept Fisheries & Aquaculture, Mubi, Adamawa State - Nigeria
[6] KhonKaen Univ, Tox Subst Livestock & Aquat Anim Res Grp, Muang, Khonkaen - Thailand
[7] Univ Hosp Jena, Inst Human Genet, Jena - Germany
[8] Inst Nacl de Pesquisas da Amazonia, Coordenacao Biodiversidade, Lab Genet Anim, Manaus, Amazonas - Brazil
Número total de Afiliações: 8
Tipo de documento: Artigo Científico
Fonte: PLoS One; v. 14, n. 3 MAR 25 2019.
Citações Web of Science: 1
Resumo

Osteoglossiformes represents one of the most ancestral teleost lineages, currently wide-spread over almost all continents, except for Antarctica. However, data involving advanced molecular cytogenetics or comparative genomics are yet largely limited for this fish group. Therefore, the present investigations focus on the osteoglossiform family Arapaimidae, studying a unique fish model group with advanced molecular cytogenetic genomic tools. The aim is to better explore and clarify certain events and factors that had impact on evolutionary history of this fish group. For that, both South American and African representatives of Arapaimidae, namely Arapaima gigas and Heterotis niloticus, were examined. Both species differed markedly by diploid chromosome numbers, with 2n = 56 found in A. gigas and 2n = 40 exhibited by H. niloticus. Conventional cytogenetics along with fluorescence in situ hybridization revealed some general trends shared by most osteoglossiform species analyzed thus far, such as the presence of only one chromosome pair bearing 18S and 5S rDNA sites and karyotypes dominated by acrocentric chromosomes, resembling thus the patterns of hypothetical ancestral teleost karyotype. Furthermore, the genomes of A. gigas and H. niloticus display remarkable divergence in terms of repetitive DNA content and distribution, as revealed by comparative genomic hybridization (CGH). On the other hand, genomic diversity of single copy sequences studied through principal component analyses (PCA) based on SNP alleles genotyped by the DArT seq procedure demonstrated a very low genetic distance between the South American and African Arapaimidae species; this pattern contrasts sharply with the scenario found in other osteoglossiform species. Underlying evolutionary mechanisms potentially explaining the obtained data have been suggested and discussed. (AU)

Processo FAPESP: 17/16328-6 - Leishmaniose visceral: abordagens genômicas para análise molecular integrada do hospedeiro e do parasito
Beneficiário:Sandra Regina Costa Maruyama
Linha de fomento: Bolsas no Brasil - Apoio a Jovens Pesquisadores
Processo FAPESP: 16/22196-2 - Uma abordagem intercontinental para a investigação da evolução cromossômica na ordem Osteoglossiformes (Teleostei: osteoglossomorpha). Parte II
Beneficiário:Marcelo de Bello Cioffi
Linha de fomento: Auxílio à Pesquisa - Regular