Fig 1.
Paranaguá estuarine complex and adjacent coastal area from Pontal do Sul to Matinhos, Paraná, Brazil.
Areas with stranded animals are designated by black dots, while harbor zones are within red lines.
Fig 2.
Diagram of small cetacean mortalities, with the numbers of carcasses recovered, diagnosed, and the collected samples and lesions according to different causes of death.
Fig 3.
Macroscopic findings supporting evidence of interactions between Sotalia guianensis and anthropogenic activities.
A and B: Impression from gillnet entanglement at the head, behind the eyes, fin and encircling the thoracic and abdominal regions. C: Fluke amputation and haemorrhage. D: A hook deeply embedded in the mouth, and line encircling the body to the abdomen producing multifocal hematoma, haemorrhage and trauma with evisceration and intestine perforation (insert).
Fig 4.
Macroscopic and microscopic findings associated with inflammatory processes.
A: Globicephala melas: Pulmonary edema. B: Sotalia guianensis: Chronic bronchointerstitial pneumonia associated with morbillivirus infection and Halocercus brasiliensis (not in the figure) (HE, 4x) and positive immunostaining for CDV (insert, 40x). C: Granulomatous lymphadenitis with giant cells (arrow) (HE, 20x). D: Membranous glomerulonephritis (arrows) (HE, 20x).
Fig 5.
Macroscopic and microscopic findings of Sotalia guianensis that died of natural causes.
A: Halocercus brasiliensis in bronchi and bronchiole lumens, with pneumonia the cause of death (COD). B: Chronic bronchointerstitial pneumonia caused by adults H. brasiliensis (arrows) (HE, 10x). C: Lung angiomatosis (Masson’s trichrome, 20x). D: Emaciation COD, muscular atrophy of dorsal cephalic musculature, multifocal ulcerated areas on skin (arrows).