Molecular diagnostic based on 18S rDNA and supplemental taxonomic data of the cnidarian coelozoic Ceratomyxa (Cnidaria, Myxosporea) and comments on the intraspecific morphological variation

Autor(es)

Sousa, Fabricio B. ^[1] ; Milanin, Tiago ^[2] ; Morandini, Andre C. ^{[3, 4]} ; Espinoza, Luis L. ^[5] ; Flores-Gonzales, Anai ^[6] ; Gomes, Ana L. S. ^[7] ; Matoso, Daniele A. ^[7] ; Mathews, Patrick D. ^[3]

Afiliação do(s) autor(es)

^[1] Natl Inst Amazonian Res, Program Genet Conservat & Evolutionary Biol, BR-69060001 Manaus, Amazonas - Brazil

^[2] Univ Sao Paulo, Fac Anim Sci & Food Technol, Dept Basic Sci, BR-13635900 Pirassununga - Brazil

^[3] Univ Sao Paulo, Inst Biosci, Dept Zool, BR-05508090 Sao Paulo - Brazil

^[4] Univ Sao Paulo, Marine Biol Ctr CEBIMar, BR-11612109 Sao Sebastiao - Brazil

^[5] Natl Univ San Marcos, Lab Biol & Mol Genet, Fac Vet Med, Lima 2800 - Peru

^[6] Res Inst Peruvian Amazon IIAP AQUAREC, Puerto Maldonado 17000, Madre De Dios - Peru

^[7] Univ Fed Amazonas, Inst Biol Sci, BR-60077000 Manaus, Amazonas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ZOOSYSTEMATICS AND EVOLUTION; v. 97, n. 2, p. 307-314, JUN 10 2021.
• Citações Web of Science: 0

Resumo

Ceratomyxa amazonensis is a cnidarian myxosporean originally described with strongly arcuate crescent-shaped myxospores, absence of vegetative stages and infecting Symphysodon discus, an important Amazonian ornamental fish in the aquarium industry. As part of a long-term investigation concerning myxosporeans that infect discus fish Symphysodon spp. from different rivers of the Amazon Basin, thirty specimens of S. discus collected from Unini River were examined. Plasmodial vegetative stages therefrom were found freely floating in the bile of gall bladders from eighteen fish. Mature myxospores were slightly crescent-shaped, measuring 4.72 +/- 0.1 (4.52-4.81) mu m in length, 24.2 +/- 0.4 (23.9-25.3) mu m in thickness with polar capsules 2.31 +/- 0.1 (2.29-2.33) mu m in length and 2.15 +/- 0.1 (2.13-2.17) mu m in width. Strong morphological differences were observed between the newly isolated myxospores obtained and the previously described C. amazonensis; however, molecular assessment, based on 18S rDNA, revealed a high similarity (99.91%), with only a single nucleotide base change. This study provides new data, expanding the original description of the species with a discussion on differences in myxospore-morphology in the context of intraspecific morphological plasticity. (AU)

• Processo FAPESP: 15/18807-3 - Detecção de mixosporídeos em oligoquetas de sistemas de criação de pintado híbrido (Pseudoplatystoma corruscans x Pseudoplatystoma reticulatum) no Estado de Mato Grosso do Sul, Brasil
• Beneficiário: Tiago Milanin
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 15/21007-9 - Reconhecendo a diversidade de águas-vivas (Medusozoa, Rhopaliophora)
• Beneficiário: André Carrara Morandini
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/20482-3 - Diversidade de cnidários microscópicos da Bacia Amazônica com ênfase na filogenia, sistemática e interação com seus hospedeiros
• Beneficiário: Patrick Mathews Delgado
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado