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2030-01-01
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INTEGRATIVE TAXONOMY REVEALS A NEW SPECIES OF DOLLFUSENTIS (ACANTHOCEPHALA: ILLIOSENTIDAE), IN ORTHOPRISTIS RUBER (OSTEICHTHYES: HAEMULIDAE) FROM RIO DE JANEIRO, BRAZIL
Taxonomia Integrativa
Rio de Janeiro
Novas espécies
Dollfusentis
Scanning electron microscopy
18S rDNA
ITS1
5.8S and ITS2
28S rDNA
COI mtDNA
Author
Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção a Saúde Ambiental. Rio de Janeiro, RJ. Brasil.
Universidad Nacional Autónoma de México. Instituto de Biología. Mexico.
Universidade Federal Fluminense. Instituto Biomédico. Departamento de Microbiologia e Parasitologia. Niterói, RJ, Brasil.
Universidad Nacional Autónoma de México. Instituto de Biología. Mexico.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção a Saúde Ambiental. Rio de Janeiro, RJ. Brasil.
Universidad Nacional Autónoma de México. Instituto de Biología. Mexico.
Universidade Federal Fluminense. Instituto Biomédico. Departamento de Microbiologia e Parasitologia. Niterói, RJ, Brasil.
Universidad Nacional Autónoma de México. Instituto de Biología. Mexico.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção a Saúde Ambiental. Rio de Janeiro, RJ. Brasil.
Abstract
The taxonomy of species of Dollfusentis is rather confused due to the overlap of morphological traits. The aim of
this study was to follow an integrative taxonomy approach over the acanthocephalans collected from Orthopristis
ruber in Brazil. Dollfusentis lenti n. sp. is described and is characterised by having an elongate trunk with spines
sparsely distributed (largest 60−85 μm long) extending from the neck to almost reach the end of proboscis
receptacle; additionally, the new species possesses a long proboscis with 12–14 longitudinal rows of 16–17 hooks
each; 3–4 posterior hooks reduced in size, well-spaced from the eight ventrolateral crescent hooks, and lemnisci
longer than proboscis receptacle. New sequences of 18S rDNA, ITS1, 5.8S and ITS2, 28S rDNA and COI mtDNA
are provided. Dollfusentis bravoae is morphologically similar because it possesses the same number of proboscis
hooks, although it differs by the size of testes and uterus and by having a higher number of trunk spines;
additionally, new scanning electron micrographs and genetic data for both species support its distinction.
Phylogenetic analysis obtained either with two nuclear genes or mitochondrial COI gene showed that Dollfusentis
spp. belong to Illiosentidae, and the new species is yielded as the sister species of D. bravoae, with D. chandleri as
the sister species of the latter two.
Keywords in Portuguese
Microscopia eletrônica de varreduraTaxonomia Integrativa
Rio de Janeiro
Novas espécies
Dollfusentis
Keywords
Dollfusentis lenti n. sp.Scanning electron microscopy
18S rDNA
ITS1
5.8S and ITS2
28S rDNA
COI mtDNA
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