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Comparison of organochlorine contaminants among sea otter (Enhydra lutris) populations in California and Alaska.

https://arctichealth.org/en/permalink/ahliterature301223
Source
Environmental Toxicology and Chemistry. 18(3):pp.452-458.
Publication Type
Article
Date
1999
Author
Corinne E. Bacon
Walter M. Jarman
James A. Estes
Mary Simon
Ross J. Norstrom
Source
Environmental Toxicology and Chemistry. 18(3):pp.452-458.
Date
1999
Language
English
Geographic Location
U.S.
Publication Type
Article
Keywords
Alaska
California
Sea otter (Enhydra lutris)
Liver
Chemical analysis
PCBs
PCDDs
PCDFs
Abstract
Organochlorine pesticides, polychlorinated biphenyls (PCBs) including non-ortho PCBs, polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs) were measured in sea otter liver tissue from California, southeast Alaska, and the western Aleutian archipelago collected between 1988 and 1992. Average total dichlorodiphenyltrichloroethane concentrations for California otters (850 µg/kg wet weight) were over 20 times higher than in Aleutian otters (40 µg/kg) and over 800 times higher than otters from southeast Alaska (1 µg/kg). Levels for total PCBs in Aleutian otters (310 µg/kg) were 1.7 times higher than levels in California otters (190 µg/kg) and 38 times higher than otters from southeast Alaska (8 µg/kg). Levels for PCDD and PCDF were extremely low in all otter populations. Levels of PCBs in Aleutian and Californian otters are abnormally high when compared with southeast Alaskan otters. The source of PCBs to the Aleutian Islands remains unclear and vital to understanding the potential impacts to sea otters.
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Evidence for recovery of body mass and haptoglobin values of river otters following the Exxon Valdez oil spill.

https://arctichealth.org/en/permalink/ahliterature6871
Source
J Wildl Dis. 1994 Jul;30(3):421-5
Publication Type
Article
Date
Jul-1994
Author
L K Duffy
R T Bowyer
J W Testa
J B Faro
Author Affiliation
Institute of Arctic Biology, University of Alaska Fairbanks 99775.
Source
J Wildl Dis. 1994 Jul;30(3):421-5
Date
Jul-1994
Language
English
Publication Type
Article
Keywords
Accidents
Alaska
Analysis of Variance
Animals
Animals, Wild
Body constitution
Female
Fresh Water
Haptoglobins - analysis - drug effects
Male
Otters - anatomy & histology - blood
Petroleum - adverse effects
Ships
Water Pollution, Chemical - adverse effects
Abstract
Levels of blood haptoglobin (Hp) and interleukin-6 immunoreactive protein (IL-6 ir) were significantly elevated in river otters (Lutra canadensis) inhabiting oiled areas of Prince William Sound, Alaska (USA) following the Exxon Valdez oil spill in 1989. By May and June 1992, however, such differences were not apparent. Mean body mass of otters, adjusted for sex, age-class, and total length with analysis of covariance, differed between oiled and non-oiled areas from 1990 to 1992, but were nearly identical by May and June 1992. We propose that river otters may be recovering from chronic effects that we observed in 1990 and 1991 following the 1989 Exxon Valdez oil spill, but further research is necessary to test this hypothesis.
PubMed ID
7933287 View in PubMed
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Malignant seminoma with metastasis and herpesvirus infection in a free-living sea otter (Enhydra lutris).

https://arctichealth.org/en/permalink/ahliterature4011
Source
J Zoo Wildl Med. 1998 Mar;29(1):35-9
Publication Type
Article
Date
Mar-1998
Author
D C Reimer
T P Lipscomb
Author Affiliation
Registry of Comparative Pathology, Armed Forces Institute of Pathology, Washington, D.C. 20306-6001, USA.
Source
J Zoo Wildl Med. 1998 Mar;29(1):35-9
Date
Mar-1998
Language
English
Publication Type
Article
Keywords
Animals
Cornea - ultrastructure - virology
Cryptorchidism - complications - veterinary
Epithelium - pathology - ultrastructure - virology
Esophagus - pathology - ultrastructure - virology
Herpesviridae - isolation & purification - ultrastructure
Herpesviridae Infections - complications - pathology - veterinary
Inclusion Bodies, Viral - ultrastructure - virology
Lymph Nodes - pathology
Lymphatic Metastasis
Male
Microscopy, Electron
Mouth Mucosa - pathology - ultrastructure - virology
Otters
Seminoma - complications - pathology - veterinary
Testicular Neoplasms - complications - pathology - veterinary
Testis - pathology
Virion - isolation & purification - ultrastructure
Abstract
In winter 1990, an adult male sea otter (Enhydra lutris) was found dead along the eastern shore of Prince William Sound, Alaska. Necropsy findings included an enlarged retained left testicle with a twisted spermatic cord, enlarged left sublumbar lymph node, emaciation, dental attrition, oral papules and ulcers, and luminal intestinal hemorrhage associated with numerous acanthocephalids. A malignant seminoma was present in the left testicle and left sublumbar lymph node. Additionally, herpesvirus like intranuclear inclusion bodies were found in oral, esophageal, and corneal epithelial cells. Virions consistent with a herpesvirus were found in esophageal epithelium. Dental attrition, severe intestinal acanthocephaliasis, the malignant seminoma, and emaciation were considered contributing factors in causing death. The herpesviral disease was probably secondary to the debilitation and stress. This is the first report of malignant seminoma with metastasis in a sea otter.
PubMed ID
9638623 View in PubMed
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