USING DEMOGRAPHY AND MOVEMENT BEHAVIOR TO PREDICT RANGE EXPANSION OF THE SOUTHERN SEA OTTER

2008 ◽  
Vol 18 (7) ◽  
pp. 1781-1794 ◽  
Author(s):  
M. Tim Tinker ◽  
Daniel F. Doak ◽  
James A. Estes
Keyword(s):  
Range Expansion ◽  
Movement Behavior ◽  
Sea Otter ◽  
Southern Sea Otter

scholarly journals Southern sea otter range expansion and habitat use in the Santa Barbara Channel, California

2017 ◽  
Author(s):  
M. Tim Tinker ◽  
Joseph Tomoleoni ◽  
Nicole LaRoche ◽  
Lizabeth Bowen ◽  
A. Keith Miles ◽  
...  
Keyword(s):  
Habitat Use ◽  
Range Expansion ◽  
Sea Otter ◽  
Santa Barbara Channel ◽  
Santa Barbara ◽  
Southern Sea Otter

The Southern Sea Otter

1987 ◽  
pp. 456-477
Author(s):  
Wilbur N. Ladd ◽  
Marianne L. Riedman
Keyword(s):  
Sea Otter ◽  
Southern Sea Otter

Biology and epidemiology ofToxoplasma gondiiin man and animals

2005 ◽  
Vol 6 (1) ◽  
pp. 41-61 ◽  
Author(s):  
Dolores E. Hill ◽  
Sreekumar Chirukandoth ◽  
J. P. Dubey
Keyword(s):  
Toxoplasma Gondii ◽  
Intermediate Host ◽  
Host Range ◽  
Marine Mammals ◽  
Parasitic Infections ◽  
Sea Otter ◽  
Coccidian Parasite ◽  
Wild Carnivores ◽  
Southern Sea Otter

AbstractToxoplasma gondiiis a coccidian parasite which utilizes felids as definitive hosts, and which has an unusually wide intermediate host range. The parasite was initially described by Nicolle and Manceaux in 1908 from the rodent,Ctenodactylus gundi. Infection withT. gondiiis one of the most common parasitic infections of man and other warm-blooded animals. It has been found worldwide from Alaska to Australia. Nearly one-third of humanity has been exposed to this parasite; serologic surveys indicate thatT. gondiiinfections are common in wild carnivores, including pigs, bears, felids, fox, raccoons, and skunks. Clinical and subclinical toxoplasmosis has been reported from wild cervids, ungulates, marsupials, monkeys, and marine mammals. Southern sea otter populations have been severely impacted byToxoplasmainfections.

Southern Sea Otter as a Sentinel of Marine Ecosystem Health

EcoHealth ◽  
2004 ◽  
Vol 1 (3) ◽  
Author(s):  
DavidA. Jessup ◽  
Melissa Miller ◽  
Jack Ames ◽  
Mike Harris ◽  
Christine Kreuder ◽  
...  
Keyword(s):  
Ecosystem Health ◽  
Marine Ecosystem ◽  
Sea Otter ◽  
Southern Sea Otter

Primary intracranial fibrosarcoma in a southern sea otter Enhydra lutris nereis

2020 ◽  
Vol 138 ◽  
pp. 207-213
Author(s):  
AR Armwood ◽  
CE Anderson ◽  
T Clauss ◽  
AC Camus
Keyword(s):  
Smooth Muscle Actin ◽  
Brain Lesion ◽  
Acute Onset ◽  
Sea Otter ◽  
Enhydra Lutris ◽  
Mammal Species ◽  
Sea Otters ◽  
Enhydra Lutris Nereis ◽  
High Mitotic Count ◽  
Southern Sea Otter

Southern sea otters Enhydra lutris nereis, a threatened marine mammal species, face numerous environmental and infectious disease challenges in their native habitat of coastal California, USA. However, there are few published cases describing neoplasia in sea otters despite their relatively long life span when cared for in aquarium settings. An 18 yr old neutered male southern sea otter, born and raised in human care, presented with an acute onset of seizures and dull mentation. Magnetic resonance imaging of the head revealed a large, central brain lesion. After no improvement with treatment, euthanasia was elected due to a poor prognosis. Grossly, a poorly demarcated, granular, tan mass expanded the cranial meninges in the longitudinal fissure at the level of the cruciate sulcus and extended into the underlying gray matter and superficial white matter. Histologically, the mass was composed of spindle cells, forming haphazardly arranged interlacing bundles and herringbone patterns, with a high mitotic count, moderate cellular pleomorphism, and prominent vascularization. Neoplastic cells demonstrated positive immunoreactivity for vimentin and negative immunoreactivity for smooth muscle actin, factor VIII-related antigen, S100, melan-A, E-cadherin, desmin, glial fibrillary acidic protein, and cytokeratin AE1/AE3. Based on gross, histologic, and immunohistochemical findings, the mass was most consistent with a primary intracranial fibrosarcoma (PIF). PIFs are a rare neoplasm in both humans and other animals with few reports in the veterinary literature. This is the first recorded case of a PIF in a sea otter.

The Spread of a Reinvading Species: Range Expansion in the California Sea Otter

1988 ◽  
Vol 131 (4) ◽  
pp. 526-543 ◽  
Author(s):  
John A. Lubina ◽  
Simon A. Levin
Keyword(s):  
Range Expansion ◽  
Species Range ◽  
Sea Otter
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