Parvicapsula spp., 128–130
P. decipiens, 133
Pomphorhynchus spp., 143
P. oncorhynchi, 132–133
P. umblae, 139
Salmincola spp., 146–147
Sanguinicola spp., 137–138
S. tenue, 140
S. truttae, 130
T. bryosalmonae, 130–132
Microsporidia
Candidatus Paranucleospora theridon, 116–117
K. takedai, 115, 116
L. salmonae, 115–116
Microstomia, 167, 168
Milky flesh, 125
Mineralization, 48
Monogenea, 141
Moritella viscosa, 79–80
Motile aeromonad septicaemia, 74
Mycobacterium spp., 91
Myointimal hyperplasia, 45, 46
Myxobolus cerebralis, 126–127
N
Necropsy
euthanasia, 28
external examination
brain sample, 30
cool environment, 28
eye examination, 28, 30
gills, 28
histological examination, 28
mouth and oral cavity, 30
orientation planes, 28, 29
skin sample, 28
internal examination, 30–31
role in fish health, 27
sample size, 28
Necrosis, 46–47
Nematodes, 131–132
Neoparamoeba perurans, 107, 109
Neoplasia
adenocarcinoma, 192
basophilic mass, 193
benign and malignant, 48
chondromas, 187–189
fibrosarcomas, 191
haemangioma, 193
hepatic carcinomas, 191–192
hepatomas, 191–192
leiomyosarcoma, 190
lymphoid, 191
lymphosarcoma, 191, 192
nephroblastoma, 192
papillomas, 187, 188
pigment cell
iridophoromas, 189–190
melanoma, 188–189
Neoplasm, 187
Nephroblastoma, 192
Nephrocalcinosis, 139, 154–155
Nervous system, 21–22
Nocardiosis, 91
Nuclear hypertrophy, 36, 41
O
Oncorhynchus masou virus (OMV), 58
Oomycetes infections, 100
Exophiala spp., 104–105
I. farinosa, 101–103
molecular sequencing, 99
P. herbarum, 103, 104
Phialophora sp., 101
Saprolegnia spp., 99–102
Opercula, abnormalities of, 166
Organized blood clot/haemopericardium, 173
P
Paecilomyces farinosus. See Isaria farinosa
Pancreas disease (PD)
cardiomyocytes, focal necrosis/inflammation of,
65, 66
cellularity at junction, 65, 66
chronic, 64, 65
clinical signs, 64, 65
diagnosis, 67
endomysium, inflammation/fibrosis of, 66
histopathological changes, 64–65
myofibre hyaline degeneration, 65, 66
vs. SD, 66
Panopthalmitis, 85, 92, 162, 163
Pansteatitis. See Steatitis
Papillomas, 187, 188
Papillomatosis, 33, 34, 36
Parvicapsula spp., 128–130
Pasteurella skyensis, 86–87
Pathology and disease diagnosis
apoptosis, 47
artefacts, 49–50
circulatory disorders (see Circulatory disorders)
inflammation and proliferation, 33–44
lipidosis, 47, 48
melanomacrophages, 48
mineralization, 48
necrosis, 46–47
neoplasia, 48
pigments, 48
PD. See Pancreas disease (PD)
Peduncle disease, 33–35
Peribilary lymphoctic infiltration, 36, 41
Petechiae, 33, 38
Phialophora sp., 103
Philonema oncorhynchi, 132–133
Phoma herbarum, 103–104
Phyllodistomum umblae, 139
Pigment cell neoplasia
iridophoromas, 189–190
melanoma, 188–189
Pigments, 48
Piscine myocarditis virus (PMV), 67–69
Piscine reovirus (PRV), 59–60
Piscirickettsia salmonis, 91–93
Plasmacytoid leukaemia (PL), 60
Polycystic syndrome, 181–182
Pomphorhynchus spp., 143
Post-mortem examination. See Necropsy
Predators
bird stab, 174
sea lampreys, 175–176
seal attack, 175
Index
209
P. decipiens, 133
Pomphorhynchus spp., 143
P. oncorhynchi, 132–133
P. umblae, 139
Salmincola spp., 146–147
Sanguinicola spp., 137–138
S. tenue, 140
S. truttae, 130
T. bryosalmonae, 130–132
Microsporidia
Candidatus Paranucleospora theridon, 116–117
K. takedai, 115, 116
L. salmonae, 115–116
Microstomia, 167, 168
Milky flesh, 125
Mineralization, 48
Monogenea, 141
Moritella viscosa, 79–80
Motile aeromonad septicaemia, 74
Mycobacterium spp., 91
Myointimal hyperplasia, 45, 46
Myxobolus cerebralis, 126–127
N
Necropsy
euthanasia, 28
external examination
brain sample, 30
cool environment, 28
eye examination, 28, 30
gills, 28
histological examination, 28
mouth and oral cavity, 30
orientation planes, 28, 29
skin sample, 28
internal examination, 30–31
role in fish health, 27
sample size, 28
Necrosis, 46–47
Nematodes, 131–132
Neoparamoeba perurans, 107, 109
Neoplasia
adenocarcinoma, 192
basophilic mass, 193
benign and malignant, 48
chondromas, 187–189
fibrosarcomas, 191
haemangioma, 193
hepatic carcinomas, 191–192
hepatomas, 191–192
leiomyosarcoma, 190
lymphoid, 191
lymphosarcoma, 191, 192
nephroblastoma, 192
papillomas, 187, 188
pigment cell
iridophoromas, 189–190
melanoma, 188–189
Neoplasm, 187
Nephroblastoma, 192
Nephrocalcinosis, 139, 154–155
Nervous system, 21–22
Nocardiosis, 91
Nuclear hypertrophy, 36, 41
O
Oncorhynchus masou virus (OMV), 58
Oomycetes infections, 100
Exophiala spp., 104–105
I. farinosa, 101–103
molecular sequencing, 99
P. herbarum, 103, 104
Phialophora sp., 101
Saprolegnia spp., 99–102
Opercula, abnormalities of, 166
Organized blood clot/haemopericardium, 173
P
Paecilomyces farinosus. See Isaria farinosa
Pancreas disease (PD)
cardiomyocytes, focal necrosis/inflammation of,
65, 66
cellularity at junction, 65, 66
chronic, 64, 65
clinical signs, 64, 65
diagnosis, 67
endomysium, inflammation/fibrosis of, 66
histopathological changes, 64–65
myofibre hyaline degeneration, 65, 66
vs. SD, 66
Panopthalmitis, 85, 92, 162, 163
Pansteatitis. See Steatitis
Papillomas, 187, 188
Papillomatosis, 33, 34, 36
Parvicapsula spp., 128–130
Pasteurella skyensis, 86–87
Pathology and disease diagnosis
apoptosis, 47
artefacts, 49–50
circulatory disorders (see Circulatory disorders)
inflammation and proliferation, 33–44
lipidosis, 47, 48
melanomacrophages, 48
mineralization, 48
necrosis, 46–47
neoplasia, 48
pigments, 48
PD. See Pancreas disease (PD)
Peduncle disease, 33–35
Peribilary lymphoctic infiltration, 36, 41
Petechiae, 33, 38
Phialophora sp., 103
Philonema oncorhynchi, 132–133
Phoma herbarum, 103–104
Phyllodistomum umblae, 139
Pigment cell neoplasia
iridophoromas, 189–190
melanoma, 188–189
Pigments, 48
Piscine myocarditis virus (PMV), 67–69
Piscine reovirus (PRV), 59–60
Piscirickettsia salmonis, 91–93
Plasmacytoid leukaemia (PL), 60
Polycystic syndrome, 181–182
Pomphorhynchus spp., 143
Post-mortem examination. See Necropsy
Predators
bird stab, 174
sea lampreys, 175–176
seal attack, 175
Index
209