New morphological and genetic data of Gigantorhynchus echinodiscus (Diesing, 1851) (Acanthocephala: Archiacanthocephala) in the giant anteater Myrmecophaga tridactyla Linnaeus, 1758 (Pilosa: Myrmecophagidae)

Autor(es)

Nascimento Gomes, Ana Paula ^{[1, 2]} ; Cesario, Clarice Silva ^[3] ; Olifiers, Natalie ^[4] ; Bianchi, Rita de Cassia ^[3] ; Maldonado Jr, Arnaldo ; Vilela, Roberto do Val ^[5]

Afiliação do(s) autor(es)

^[1] Fundacao Oswaldo Cruz, Lab Biol & Parasitol Mamiferos Silvestre Reservat, Inst Oswaldo Cruz, Ave Brasil 4365, BR-21045900 Rio De Janeiro - Brazil

^[2] Fundacao Oswaldo Cruz, Inst Oswaldo Cruz, Pos Grad Biol Parasitaria, Rio De Janeiro, RJ - Brazil

^[3] Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Biol Aplicada Agr, Lab Ecol Mamiferos, Campus Jaboticabal, BR-14884900 Jaboticabal, SP - Brazil

^[4] Univ Veiga Almeida, Rua Ibituruna 108, BR-20271901 Rio De Janeiro, RJ - Brazil

^[5] Maldonado Jr, Jr., Arnaldo, Fundacao Oswaldo Cruz, Lab Biol & Parasitol Mamiferos Silvestre Reservat, Inst Oswaldo Cruz, Ave Brasil 4365, BR-21045900 Rio De Janeiro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE; v. 10, p. 281-288, DEC 2019.
• Citações Web of Science: 0

Resumo

Gigantorhynchus echinodiscus (Diesing, 1851) is a parasite of anteaters in South America. Although described by Diesing in 1851, there is still a lack of taxonomic and phylogenetic information regarding this species. In the present study, we redescribe G. echinodiscus collected from a giant anteater, Myrmecophaga tridactyla Linnaeus, 1758, from the Brazilian Cerrado (Savannah) in the State of Sao Paulo by light and scanning electron microscopy. In addition, phylogenies were inferred from partial DNA gene sequence of the nuclear large subunit ribosomal RNA gene (28S rRNA). We provide for the first time details of the proboscis with a crown having 18 large hooks and numerous small hooks, a lateral papilla at the base of the proboscis, a ringed pseudo-segmented body, large testes, cemented glands in pairs, and a non-segmented region in the posterior end of the body, which contributed to the diagnosis of the species. Molecular phylogenetic analyses recovered G. echinodiscus forming a well-supported monophyletic group with Mediorhynchus sp., which was congruent with morphological studies that allocate both genera within the family Gigantorhynchidae. In conclusion, the present work adds new morphological and molecular information, emphasizing the importance of adopting integrative taxonomic approaches in studies of Acanthocephala. (AU)

• Processo FAPESP: 13/18526-9 - Importância de remanescentes de cerrado para o tamanduá-bandeira (Myrmecophaga tridactyla) no Nordeste de São Paulo
• Beneficiário: Rita de Cassia Bianchi
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular
• Processo FAPESP: 13/04957-8 - Uso da paisagem por tamanduás-bandeira (Myrmecophaga tridactyla) com uso de telemetria via satélite na Estação Ecológica de Santa Bárbara, São Paulo, Brasil
• Beneficiário: Alessandra Bertassoni da Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado