Snow-track surveys have been used successfully to determine the presence of a variety of carnivore species, including wolverine Gulo gulo, river otter Lutra canadensis
,red fox Vulpes vulpes and short-tailed weasel Mustela erminea (Reid et al.
El patron de acidos biliares determinado con esta tecnica resulto satisfactorio para distinguir Felis onca y Puma concolor (Fernandez et al., 1997); Linx rufus, Canis latrans, Procyon lotor y Vulpes vulpes (Major et al., 1980); Felis concolor y Lutra canadensis
(Johnson et al., 1982) y Felis concolor y Felis rufus (Johnson et al., 1984).
River otter (Lutra canadensis
) habitat utilization in northwestern Illinois.
It immediately dropped to all fours and began to do the "otter hop" in that direction (river otters, Lutra canadensis
, are one of the largest members of the weasel clan and hop like all species of that family).
Reproductive and morphological condition of wild mink (Mustela vison) and river otters (Lutra canadensis
) in relation to chlorinated hydrocarbon contamination.
Two river otters (Lutra canadensis
) have also been recovered.
River otters (Lutra canadensis
Schreber) inhabiting coastal environments forage in the intertidal and subtidal zones for marine fish and invertebrates (Larsen 1984, Stenson et al.
The North American river otter (Lutra canadensis
) formerly ranged throughout most of the eastern portion of Texas from the coast west to approximately the 98th Meridian (Bailey 1905).
1964: Reproduction in the otter, Lutra canadensis
.--Journal of Mammalogy 45: 242-252.
Such injured biological resources included bald eagles (Haliaeetus leucocephalus), black oystercatchers (Haematopus bachmani), common loons (Gavia immer), clams, common murres (Uria aalge), cormorants (Phalacrocorax, three species), cutthroat trout (Oncorhynchus clarkii), Dolly Varden trout (Salvelinus malma), harlequin ducks (Histrionicus histrionicus), harbor seals (Phoca vitulina), Kittlitz's murrelets (Brachyramphus brevirostris), marbled murrelets (Brachyramphus marmoratus marmoratus), killer whales (Orcinus orca), mussels (Mytilus edulis), Pacific herring (Clupea harengus), river otters (Lutra canadensis
), pigeon guillemots (Cepphus columba), pink salmon (Oncorhynchus gorbuscha), rockfish (Sebastes sp.), sea otters (Enhydra lutris), and sockeye salmon (Oncorhynchus nerka).