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13 Cards in this Set
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Herpesvirus lesions in cetaceans?
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1. life-threatening disseminated infections
2. non-life-threatening dermatitis. Gross: hyperplasia, papules. Histo: epithelial hyperplasia, INIB. (personal note: wouldn't call it dermatitis based on the findings described) |
JZWM vol37 issue 2 june 2006 pp.174-181
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Novel gammaherpesvirus in Northern Elephant Seals:
Lesions? |
Ulcers on the tongue, palatine mucosa, and/or tonsils.
Cytoplasmic swelling, nuclear pyknosis, and eo to ampho INIB suggestive of herpesviral infection. |
JWD Goldstein et al (2006, I think)
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Significance of hookworms in California sea lions?
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Pups: "hookworm enteritis - bacteremia complex". Uncinaria spp.
Mid small intestine. Associated lesions: peritonitis, polyarthritis, pleuritis, hepatitis, hematogenous pneumonia. Histo: neu/eo/lym/plas |
JWD 43(2) 2007 p.179
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Eimeria phocae in harbour seals:
lesions? |
Fatal enterocolitis.
Last 1/3 of jejunum, ileum, caecum, colon. Hemorrhagic and necrotizing enterocolitis. |
G.H. van Bolhuis et al.
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Pathological findings in harbour seals Schleswig-Holstein:
1. which organ systems most commonly affected? 2. most common cause of death? 3. most frequently isolated bacteria? 4. which changes more frequent after 2002? |
1. respiratory and alimentary.
2. bronchopneumonia by parasites and/or bacteria. 3. alpha/beta-hemolytic streptococi, E. coli, C. perfringens. 4. parasites in lung, stomach, intestine; bronchopneumonia, gastritis, enteritis, septicaemia, perinatal death. |
JCP 2007 137 47-58
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Lesions associated with a novel Mycoplasma sp. in california sea lions undergoing rehabilitation?
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Pneumonia, polyarthritis, subdermal / intramuscular abscessation, lymphadenopathy.
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JWD 42(1) 2006 40-45
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Phocine herpesvirus 1:
lesions in European harbor seals? |
Pneumonia
Hepatomegaly Small erosions of the oral mucosa. Micro: liver: severe to massive coagulation necrosis with no specific zonal pattern. Interstitial pneumonia with mononuclear infiltrates. |
Diseases of pinnipeds lecture notes.
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Endemic tumors in Californa sea lions:
cause? lesions? |
Otarine Herpesvirus-1 (NOT papillomavirus).
Urogenital carcinoma. Highly aggressive, anaplastic. In sexually mature (not elderly) sea lions. |
JCP 2006 135(4) 183-9
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Chronic stress in Atlantic bottlenose dolphin:
changes in adrenal gland? |
- increase in adrenal mass
- increase in cortex to medulla ratio - increase in epinephrine-producing cells within the medulla -> increased thickness medullary band. |
JCP 2006 135 208-216
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Marine mammal neoplasia:
1. name 2 species particularly prone to cancer; the common neoplasm and the (suspected) cause. 2. And in seals? 3. Manatees? 2. and |
1. California sea lion (urogenital tract neoplasia, Otarine Herpesvirus 1, INIB!); St Lawrence region: beluga whales (possibly contaminants; GI cancers!).
repro. 2. genital tract; xenoestrogens. 3. skin; papillomavirus. |
Vet Pathol 43:865-880 (2006)
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Relationship between red tides and marine mammal mortalities?
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Potent marine neurotoxins: brevetoxins, produced by 'red tide' dinoflagellate Karenia brevis.
Fish and seagrass accumulate toxin (vector) -> dolphins and manatees, respectively. |
Nature 435 9 june 2005 p.755
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Pathology of domoic acid in california sea lions?
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DA = neurotoxic, analog of excitatory neurotransmitter L-glutamate. Produced by marine algae. Vectors: algivorous / filter feeding spp. (here: anchovy). -> seizures, obtundation.
Gross: piriform lobe malacia, myocardial pallor, bronchopneumonia, pregnancy complications. Peracute: hydropic degeneration neuropil hippocampus/amygdala/pyriform lobe. Acute-> ischemic neuronal necrosis (dentate gyrus) Chronic-> gliosis, mild nonsupp infl, loss of laminar organization. Peracute -> |
Vet Pathol 42:184-191 (2005)
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Amazon and orinoco river dolphins:
Most common pathologic findings? |
High mortality in first 2 months after capture and transport for relocation.
1. pneumonia 42% 2. cutaneous and SQ ulcerations and abscesses 36% 3. cachexia 4. renal pathology 5. hepatic pathology 6. bacterial sepsis - often pulmonary trematodes (Hunterotrema caballeroi) predisposing to pneumonia - pneumonia was generally bacterial - abscesses: "golf ball disease" - cetaceans are unusually prone to bacterial septicemia - prevalent gastric ulceration |
JZWM 38(2):177-191 2007
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