Next Article in Journal
Characterization of Tanzanian Avocado Using Morphological Traits
Previous Article in Journal / Special Issue
Analysis of Encystment, Excystment, and Cyst Structure in Freshwater Eutardigrade Thulinius ruffoi (Tardigrada, Isohypsibioidea: Doryphoribiidae)
Open AccessFeature PaperArticle

The Deep-sea Genus Coronarctus (Tardigrada, Arthrotardigrada) in Brazil, South-Western Atlantic Ocean, with the Description of Three New Species

1
Bioscience Centre, Department of Animal Biology, Federal University of Pernambuco, Av Prof. Moraes Rego, 1275, Cid. Universitária, Recife PE 50670-901, Brasil
2
Departamento de Biologia, Universidade Federal Rural de Pernambuco, Av. Manoel de Medeiros, S/N, Dois Irmãos, Recife PE 52171-090, Brasil
3
Department of Biology, Faculty of Sciences, University of Porto. Rua Campo Alegre, 4169-007 Porto, Portugal
4
MARE, Marine and Environmental Sciences Centre, ISPA – Instituto Universitário, Rua Jardim do Tabaco, 34, 1149-041 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Diversity 2020, 12(2), 63; https://doi.org/10.3390/d12020063
Received: 30 December 2019 / Revised: 30 January 2020 / Accepted: 2 February 2020 / Published: 5 February 2020
(This article belongs to the Special Issue Tardigrades Taxonomy, Biology and Ecology)
Three new marine tardigrade species from the deep-sea genus Coronarctus are described from the South-Western Atlantic Ocean: Coronarctus dissimilis sp. nov., C. neptunus sp. nov., and C. yurupari sp. nov. These, and C. laubieri Renaud-Mornant, 1987, are the first records of deep-sea tardigrades from this marine region. Specimens of those species were collected from two localities of the Brazilian continental slope (Potiguar and Campos basins) at depths comprised between 150 and 3000 m. Specimens of the three new species have short cephalic appendages and heteromorphic claws, belonging to the, here designated, C. tenellus group of species. Each of the new species can be distinguished from all the other species of the group by their peculiar-shaped secondary clavae and claws. The most relevant morphological characters used for the taxonomy of the genus: shape of cephalic cirri, shape of secondary-clavae, size and number of accessory spines on claws, and shape of seminal receptacles, are discussed and an identification key to all ten known Coronarctus species is provided.
Keywords: Abyssal; continental slope; Coronarctus dissimilis sp. nov.; C. neptunus sp. nov.; C. yurupari sp. nov.; identification key; meiofauna; taxonomy Abyssal; continental slope; Coronarctus dissimilis sp. nov.; C. neptunus sp. nov.; C. yurupari sp. nov.; identification key; meiofauna; taxonomy
MDPI and ACS Style

Gomes-Júnior, E.; Santos, É.; da Rocha, C.M.; Santos, P.J.P.; Fontoura, P. The Deep-sea Genus Coronarctus (Tardigrada, Arthrotardigrada) in Brazil, South-Western Atlantic Ocean, with the Description of Three New Species. Diversity 2020, 12, 63.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop