Fig 1.
Map of the study area showing the localities where Spheniscus magellanicus, Otaria flavescens and Arctocephalus australis were collected.
A Southwest Atlantic coast of South America. B Detail of the north Patagonian coast of Argentina (red rectangle in Fig 1A). The distribution of the nesting colonies of Spheniscus magellanicus in the Atlantic coast of South America follows Schiavini et al. [44]. Abbreviations: RJ, Rio de Janeiro; RS, Rio Grande do Sul; SE, Sergipe. The map was made using QGIS v.2.18 (http://www.qgis.org/es/site/). Original copyright [2017].
Table 1.
Taxa included in the phylogenetic analyses with data on host, locality and GenBank accession number.
Fig 2.
Corynosoma australe collected from Spheniscus magellanicus off the Brazilian coasts.
A Adult male, whole worm, lateral view, voucher. B Adult female, whole worm, ventral view, voucher.
Fig 3.
Corynosoma australe collected from Spheniscus magellanicus.
A Proboscis of juvenile female, voucher. B Hooks of a longitudinal row of juvenile female, lateral view. C Egg.
Fig 4.
Scanning electron micrographs of Corynosoma australe collected from Spheniscus magellanicus off Brazil.
A Adult male, whole worm, lateral view. B Adult female, whole worm, lateral view. C Female proboscis, subapical view, distal hooks invaginated. D Posterior end of adult male showing genital spines, lateral view. E Posterior end of adult female showing genital spines, lateral view.
Table 2.
Metrical and meristic data of males and females of Corynosoma australe from different definitive hosts.
Body length and trunk length in millimetres, other measurements in micrometres.
Fig 5.
Bayesian inference (BI) phylograms for Corynosoma inferred from (A) 28S rRNA and (B) mitochondrial cox1 datasets. Nodal support is given as posterior probabilities (BI) and bootstrap values from Maximum likelihood (ML) analyses as (BI/ML); only support values > 0.95 (BI) and > 75% (ML) are shown. The scale-bar indicates the expected substitutions number per site. The hosts from which the isolates were collected are shown on the trees (see Table 2 for details). The newly generated sequences are presented in red. Outgroup: Bolbosoma turbinella.
Table 3.
Populational data of Corynosoma australe in three host species collected in South American waters, Spheniscus magellanicus, Otaria flavescens and Arctocephalus australis.
Fig 6.
Distribution of fecundity values (number of eggs) and the body size (volume) Corynosoma australe from Spheniscus magellanicus, Otaria flavescens and Arctocephalus australis.