Two recent works related otter (Lutra lutra, L., 1758) trophic patterns over large areas with the stability of aquatic ecosystems. Higher levels of instability lead to a reduced availability and/or predictability of fish, and consequently to a decrease of fish consumption by otters. The aim of the present study is to test these macrogeographical patterns in otter diet at regional and local-scal...

Fish-eating wildlife, such as river otters (Lontra canadensis), accumulate mercury (Hg) at concentrations known to impair animal behavior, but few studies have explored the underlying biochemical changes that precede clinical neurotoxicity. The objective of this study was to determine if Hg exposure can be related to concentrations of neurochemical receptors in river otters. River otter carcass...

This bibliography synthesizes selected literature (e.g., abstracts, reports, peer-reviewed journal articles) relevant to the capture, veterinary care, and translocation success of river otters and other meso-bodied vertebrates. Coverage of this bibliography encompasses two broad subject areas: 1) a primary emphasis on veterinary aspects related to the specific care of otters and similar musteli...

Abstract In semi-arid environments, the effects of irregularly distributed rainfall, flow regulation and water inter-basin transfer enhance spread non-native fish to detriment native communities. River Segura, since 1980s number species has progressively increased, also because building facility connecting rivers Segura Tajo. With aim highlighting how man-driven changes in diversity communities...

It is presumed that the oUer (Lutra hara) became extinct in the Netherlands in 1988. Since then much effort has been made to restore the freshwater habitat aiming for a return of this top-predator. In 1998 from the central part of the Netherlands an otter was repOlted as a tratlic casualty. It was not known if this individual was a rudiment of the original Dutch population or if it had escaped ...

Sea otters (Enhydra lutris) are known to forage extensively in both rocky and soft-bottom habitats throughout their range in Alaska. Their ability to significantly reduce prey abundance, limit prey size, and consequently alter community structure has been well documented. Much of this research, however, has focused on sea otter interactions with rocky habitats and associated epifaunal invertebr...