A5039615419- Marine animal studies overview
- Toxic Organic Pollutants Impact
- Per- and polyfluoroalkyl substances research
- Marine Toxins and Detection Methods
- Mercury impact and mitigation studies
- Leptospirosis research and findings
- Nicotinic Acetylcholine Receptors Study
- Aquaculture disease management and microbiota
- Atmospheric chemistry and aerosols
- Toxoplasma gondii Research Studies
- Influenza Virus Research Studies
- Veterinary medicine and infectious diseases
- Respiratory viral infections research
- Coral and Marine Ecosystems Studies
- Neuroscience of respiration and sleep
- Viral Infections and Vectors
- Physiological and biochemical adaptations
- Arctic and Antarctic ice dynamics
- Avian ecology and behavior
- Botany, Ecology, and Taxonomy Studies
- Bacteriophages and microbial interactions
- Maritime Navigation and Safety
- Cardiovascular and Diving-Related Complications
- Ocean Acidification Effects and Responses
- Vibrio bacteria research studies
California Academy of Sciences
2016-2024
OAI Consulting (United States)
2024
National Oceanic and Atmospheric Administration
2008-2024
NOAA National Marine Fisheries Service
2008-2024
Marine Mammal Center
2009-2020
Cascadia Research Collective
2019
NOAA National Marine Fisheries Service Southwest Fisheries Science Center
2019
University of St Andrews
2010-2014
NOAA National Marine Fisheries Service Northwest Fisheries Science Center
2008
University of California, Davis
2006
Stranded marine mammals offer a unique sample of relatively inaccessible wild animals that are more likely to represent the diseased segment population and easy examine thoroughly. Examination these animals, therefore, offers method detect novel diseases in free-living aquatic mammals. Diseases may reflect environmental changes such as ocean pollution, prey shifts, global warming. To spatial temporal trends prevalence diseases, we reviewed records for 3,707 California sea lions (Zalophus...
To investigate viral pathogens potentially involved in a mortality event of 21 Pacific harbor seals (Phoca vitulina richardsii) California 2000, metagenomics was performed directly on lung samples from five individuals. Metagenomics revealed novel seal anellovirus (SealAV), which clusters phylogenetically with anelloviruses sea lions and domestic cats. Using specific PCR, SealAV identified tissue two animals the 2000 event, as well one 20 examined post-mortem 2008. The identification...
Interspecies transmission of influenza A is an important factor in the evolution and ecology viruses. Marine mammals are contact with a number reservoirs, including aquatic birds humans, this may facilitate among avian mammalian hosts. Virus isolation, whole genome sequencing, hemagluttination inhibition assay confirmed that exposure to pandemic H1N1 virus occurred free-ranging Northern Elephant Seals (Mirounga angustirostris) 2010. Nasal swabs were collected from 42 adult female seals April...
Blood was collected from stranded harbor seal (Phoca vitulina) pups at admission (n=64) and release (n=45) rehabilitation in 2007 2008 wild-caught pups, subadults, adults (n=110) 2004, 2007, 2008. values measured the time of were not predictive survival during rehabilitation. Mass associated with until release, all that died weighed less than 10 kg admission. Döhle bodies observed leukocytes 15% to 22% rehabilitation, but wild pups. Thresholds (95% confidence intervals) among those released...
Abstract The transplacental transfer of organochlorines (OCs) in California sea lions ( Zalophus californianus ) was investigated by analyzing blubber samples from 20 female and their fetuses during the last trimester pregnancy. A rapid, high‐performance liquid chromatographic, photodiode‐array method used to measure concentrations polychlorinated biphenyls (PCBs), including dioxin‐like congeners, as well DDTs hexachlorobenzene. Summed values PCBs (ΣPCBs), (ΣDDTs), PCB toxic equivalents...
Leptospirosis is a zoonotic disease infecting broad range of mammalian hosts, and re-emerging globally. California sea lions (Zalophus californianus) have experienced recurrent outbreaks leptospirosis since 1970, but it unknown whether the pathogen persists in lion population or introduced repeatedly from external reservoirs. We analyzed serum samples collected over an 11-year period 1344 that stranded alive on coast, using microscopic agglutination test (MAT) for antibodies to Leptospira...
The measurement of circulating reproductive hormone levels provides a relatively noninvasive method for assessing status. We assessed seasonal changes in concentrations progesterone and total estrogens from serum samples collected live stranded (n = 199) captive 5) California sea lions (Zalophus californianus). Progesterone increased the fall (September–November) both pregnant nonpregnant animals, with no significant difference associated pregnancy. were greater animals spring...
The infection status of harbor seals Phoca vitulina in central California, USA, was evaluated through broad surveillance for pathogens stranded and wild-caught animals from 2001 to 2008, with most samples collected 2007 2008. Stranded Mendocino County San Luis Obispo were sampled at a rehabilitation facility: Marine Mammal Center (TMMC, n = 175); 2 locations: Francisco Bay (SF, 78) Tomales (TB, 97), that differed degree urbanization. Low prevalences Salmonella, Campylobacter, Giardia,...
An expanding body of research indicates that exposure to contaminants may impact marine mammal health, thus possibly contributing population declines. The harbor seal the San Francisco Bay (SFB), California, has suffered habitat loss and degradation, including decades environmental contamination. To explore possibility contaminant-induced health alterations in this population, blood levels polychlorinated biphenyls (PCBs), dichlorodiphenyldichloroethylene (DDE), polybrominated diphenyl...
California sea lions have high levels of persistent organic pollutants (POPs) in their blubber. Animals affected by domoic acid fast and refeed during rehabilitation. We studied the effect decreases total body mass (16 ± 7% initial mass) on blubber POP contaminant concentrations estimated burdens fasting (12 5 days) 19 lions. The refeeding (92 8% was also investigated. Significant increases concentration all POPs were found over loss period gain. A basic balance model indicated that changes...
Abstract Objective —To determine the effect of natural exposure to domoic acid (DA) on eosinophil counts and adrenal gland function in California sea lions ( Zalophus californianus ). Design —Cross-sectional prospective study. Animals —39 lions. Procedures —Adult female admitted a rehabilitation hospital during 2009 were classified into 1 3 groups (acute DA toxicosis, chronic or no exposure) basis clinical signs, concentration urine feces, hippocampal morphology. Endoparasite burden, count,...
Beginning in December 2018, increased numbers of gray whale ( Eschrichtius robustus ) strandings were reported along the west coast Mexico, United States, and Canada, prompting declaration a Unusual Mortality Event (UME) by States National Marine Fisheries Service. Although declined 2020 2021 from peak 2019, UME is still ongoing as fall 2023. Between 17 2018 31 2021, 503 animals stranded North America, with 226 71 California, 12 Oregon, 56 Washington, 21 British Columbia, 117 Alaska. These...