White-winged Crossbills Obtain Forage from River Otter Feces

2004 ◽  
Vol 116 (2) ◽  
pp. 181-184 ◽  
Author(s):  
Daniel Gallant
Keyword(s):  
River Otter

EFFECTS OF RIVER OTTER ACTIVITY ON TERRESTRIAL PLANTS IN TROPHICALLY ALTERED YELLOWSTONE LAKE

Ecology ◽  
2007 ◽  
Vol 88 (4) ◽  
pp. 1040-1052 ◽  
Author(s):  
Jamie R. Crait ◽  
Merav Ben-David
Keyword(s):  
River Otter ◽  
Terrestrial Plants ◽  
Yellowstone Lake

scholarly journals A River Otter's, Lontra canadensis, Capture of a Double-crested Cormorant, Phalacrocorax auritus, in British Columbia's Gulf Island Waters

2007 ◽  
Vol 121 (3) ◽  
pp. 325
Author(s):  
Michael H. H. Price ◽  
Clare E. Aries
Keyword(s):  
Lontra Canadensis ◽  
Phalacrocorax Auritus ◽  
River Otter ◽  
Freshwater Lakes ◽  
Marine Bird ◽  
River Otters

Direct and apparent predation events by River Otters (Lontra canadensis) on birds have been recorded on marine islands and freshwater lakes. We add to this the first known observation of a River Otter capturing a marine bird on the ocean.

River Otter (Lontra canadensis) Food Habits in a Washington Coast Watershed: Implications for a Threatened Species

2016 ◽  
Vol 97 (1) ◽  
pp. 36-47 ◽  
Author(s):  
Jonathan J Scordino ◽  
Patrick J Gearin ◽  
Susan D Riemer ◽  
Eric M Iwamoto
Keyword(s):  
Threatened Species ◽  
Food Habits ◽  
Lontra Canadensis ◽  
River Otter

scholarly journals River Otter Distribution and Food Habits in Grand Teton National Park as Part of an Ongoing Project in the GYE

2015 ◽  
Vol 38 ◽  
pp. 75-78
Author(s):  
Kelly Pearce ◽  
Tom Serfass
Keyword(s):  
National Park ◽  
Activity Patterns ◽  
Public Support ◽  
Primary Objective ◽  
Camera Traps ◽  
Lontra Canadensis ◽  
Flagship Species ◽  
River Otter ◽  
Grand Teton National Park ◽  
River Otters

Grand Teton National Park is part of the known range of the North American river otter, however not much is known about this semi-aquatic mammal within the park. The results presented here are part of a larger project to investigate the potential of the river otter (Lontra canadensis) to serve as an aquatic flagship (species that engender public support and action) for the Greater Yellowstone Ecosystem. River otters, known for their charismatic behavior have the potential to serve as an aquatic flagship species to promote conservation of aquatic ecosystems. The primary objective of this portion of the study was to identify river otter latrines on portions of the Snake River, between Flagg Ranch and Jackson Lake, and between Jackson Lake Dam and Pacific Creek, collect river otter scats to determine diet of the river otter, and employ remote cameras to determine activity patterns of the river otters. Between 20 June and 1 July 2015, 26 river otter latrines were identified during shoreline surveys, 186 river otter scats were collected, and cameras were deployed at 6 latrines between 7 July and 24 August 2015. River otter scats have been cleaned and prepared for analysis, but have not all been processed to date. Camera traps recorded 222 images, of which 7% (n = 14) were of carnivores, 70% (n = 155) were of non-carnivore mammals, and 9% (n = 22) were of birds. River otters were detected at 1 of the 6 latrines, a total of 5 independent times during the study.

Size-selective predation by river otter (Lontra canadensis) improves refuge properties of shallow coastal marine nursery habitats

2008 ◽  
Vol 86 (11) ◽  
pp. 1324-1328 ◽  
Author(s):  
D. Cote ◽  
R. S. Gregory ◽  
H. M.J. Stewart
Keyword(s):  
Shallow Water ◽  
Atlantic Cod ◽  
Prey Availability ◽  
Juvenile Fish ◽  
Lontra Canadensis ◽  
River Otter ◽  
Fish Nursery ◽  
Piscivorous Fish ◽  
Risk Of Predation ◽  
Nursery Habitats

Young fish often avoid deep water to reduce predation risk from larger fish. Less clear are explanations for the avoidance of shallows by large piscivorous fish; however, one hypothesis suggests that this distribution reduces contact with depth-limited semi-aquatic mammal and bird piscivores. We determined prey size selection of the river otter ( Lontra canadensis (Schreber, 1777)) to test the hypothesis that larger fish are at elevated risk in shallow coastal waters in Newman Sound, Newfoundland, during June–November 2001 and May 2002. We compared otter diet (scat analysis) and prey availability (seine sampling) to test this hypothesis. Five fish taxa (Atlantic cod ( Gadus morhua L., 1758), Greenland cod ( Gadus ogac Richardson, 1836), shorthorn sculpin ( Myoxocephalus scorpius (L., 1758)), cunner ( Tautogolabrus adspersus (Walbaum, 1792)), and winter flounder ( Pseudopleuronectes americanus (Walbaum, 1792))) dominated the shallow-water fish community and were sufficiently abundant in otter scats to examine feeding preferences. Larger, piscivorous fish were selected by otters, suggesting that they were at greater risk of predation than smaller fish, consistent with our hypothesis that depth-limited, diurnally active predators restrict large fish from hunting in shallow water during daytime. We suggest that depth-limited air-breathing predators may reduce the presence of such predatory fish in shallow-water juvenile fish nursery habitats.

River Otter Predation on Glaucous-Winged Gulls on Mandarte Island, British Columbia

The Murrelet ◽  
1978 ◽  
Vol 59 (3) ◽  
pp. 92 ◽  
Author(s):  
Nicolaas A. M. Verbeek ◽  
Joan L. Morgan
Keyword(s):  
British Columbia ◽  
River Otter

The Osteology and Myology of the California River Otter.

1944 ◽  
Vol 32 (1) ◽  
pp. 256
Author(s):  
Rainer Zangerl ◽  
Edna M. Fisher
Keyword(s):  
River Otter

NEPHROLITHIASIS IN FREE-RANGING NORTH AMERICAN RIVER OTTER (LONTRA CANADENSIS) IN NORTH CAROLINA, USA

2014 ◽  
Vol 45 (1) ◽  
pp. 110-117 ◽  
Author(s):  
Jennifer N. Niemuth ◽  
Charles W. Sanders ◽  
Charles B. Mooney ◽  
Colleen Olfenbuttel ◽  
Christopher S. DePerno ◽  
...  
Keyword(s):  
North Carolina ◽  
North American ◽  
Lontra Canadensis ◽  
River Otter ◽  
American River ◽  
Free Ranging

Spatio-temporal variation in river otter (Lontra canadensis) diet and latrine site activity

Ecoscience ◽  
2013 ◽  
Vol 20 (1) ◽  
pp. 28-39 ◽  
Author(s):  
Shannon Crowley ◽  
Chris J. Johnson ◽  
Dexter P. Hodder
Keyword(s):  
Temporal Variation ◽  
Lontra Canadensis ◽  
River Otter ◽  
Spatio Temporal ◽  
Latrine Site
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