Table 1.
Test results of the 16 pinnipeds surveyed to Dirofilaria immitis
| Animal | Species | Sex | Country of origin | Birth year | Antigen test | Knott test | qPCR | Signs |
|---|---|---|---|---|---|---|---|---|
| 1 | P. vitulina | M | Portugal | 2012 | – | – | – | – |
| 2 | P. vitulina | F | Canada | 1989 | Positive | – | Positivea | – |
| 3 | P. vitulina | M | Canada | 1996 | – | – | – | – |
| 4 | P. vitulina | F | Portugal | 2007 | – | – | Positive | – |
| 5 | P. vitulina | F | Canada | 1989 | Positive | – | Positive | – |
| 6 | H. grypus | M | Portugal | 2002 | – | – | – | – |
| 7 | H. grypus | F | Canada | 1990 | – | – | – | – |
| 8 | Z. californianus | M | Portugal | 1996 | – | – | Positive | – |
| 9 | Z. californianus | M | Spain | 2003 | – | – | – | – |
| 10 | Z. californianus | M | Belgium | 1996 | – | – | Positive | – |
| 11 | A. p. pusillus | M | Portugal | 1998 | – | – | Positive | – |
| 12 | A. p. pusillus | M | UK | 1992 | – | Positive | Positive | Cough, lethargy and exercise intolerance |
| 13 | A. p. pusillus | M | Sweden | 2002 | – | – | – | – |
| 14 | A. p. pusillus | M | Sweden | 2002 | – | – | – | – |
| 15 | A. p. pusillus | M | Portugal | 1996 | – | – | – | – |
| 16 | A. p. pusillus | M | Spain | 1996 | – | – | – | – |
| Total | 12M/4F | 2 | 1 | 7 | – |
Abbreviations: F female, M male
aAnimal in which transthoracic echocardiography was performed revealing the presence of linear mobile hyperechoic structures within the right ventricle and main pulmonary artery, consistent with heartworms