| diversity of mtdna in southern river otter (lontra provocax) from argentinean patagonia. | lontra provocax is an endemic species from patagonia that has been categorized as "endangered" by the international union for conservation of nature. in this study, noninvasive molecular methods were used to investigate the genetic diversity and haplotype distribution of l. provocax in argentinean patagonia. we analyzed 150 scat samples collected from 1995 to 2006 and obtained 13 sequences of control region with 1 haplotype and 34 sequences of cytochrome b with 4 haplotypes. the population of th ... | 2008 | 18310615 |
| invasive american mink: linking pathogen risk between domestic and endangered carnivores. | infectious diseases, in particular canine distemper virus (cdv), are an important threat to the viability of wild carnivore populations. cdv is thought to be transmitted by direct contact between individuals; therefore, the study of species interactions plays a pivotal role in understanding cdv transmission dynamics. however, cdv often appears to move between populations that are ecologically isolated, possibly through bridge hosts that interact with both species. this study investigated how an ... | 2014 | 24604545 |
| trophic interactions of the endangered southern river otter (lontra provocax) in a chilean ramsar wetland inferred from prey sampling, fecal analysis, and stable isotopes. | non-invasive methodological approaches are highly recommended and commonly used to study the feeding ecology of elusive and threatened mammals. in this study, we use multiple lines of evidence to assess the feeding strategies of the endangered southern river otter, by determining seasonal prey availability (electrofishing), analysis of undigested prey remains (spraints), and the use of stable isotopes (δ(15)n and δ(13)c) in otter spraints (n = 262) and prey in a wetland ecosystem of southern chi ... | 2013 | 23467968 |
| a new microphallid (digenea) species from lontra provocax (mammalia: mustelidae) from freshwater environments of northwestern patagonia (argentina). | a new microphallid species of maritrema is described from the native southern river otter, lontra provocax (thomas). a naturally infected otter was found dead in the nahuel huapi national park, argentina. ovigerous adult worms were recovered from the anterior portion of the intestine. specimens of maritrema huillini n. sp. have an unarmed genital pore and glabrous cirrus. they can be distinguished from all other species in the genus by having a long intestinal ceca extending up to three-quarters ... | 2012 | 22540416 |
| phylogeography of the patagonian otter lontra provocax: adaptive divergence to marine habitat or signature of southern glacial refugia? | a number of studies have described the extension of ice cover in western patagonia during the last glacial maximum, providing evidence of a complete cover of terrestrial habitat from 41°s to 56°s and two main refugia, one in south-eastern tierra del fuego and the other north of the chiloé island. however, recent evidence of high genetic diversity in patagonian river species suggests the existence of aquatic refugia in this region. here, we further test this hypothesis based on phylogeographic in ... | 2011 | 21356052 |
| scale-dependent analysis of an otter-crustacean system in argentinean patagonia. | the southern river otter or 'huillin', lontra provocax, is an endangered species endemic of the andean patagonian region of argentina and chile. it feeds almost exclusively on the genera of macro-crustacea: aegla and sammastacus. the aim of this study was to analyse the role of food availability on the huillin's distribution using a scale-dependent analysis of crustacean and otter distributions. we compared the distributions of otters and macro-crustaceans along a north-south regional gradient, ... | 2009 | 19225749 |
| toxoplasma gondii infection in wild mustelids and cats across an urban-rural gradient. | the increase in human population and domestic pets, such as cats, are generating important consequences in terms of habitat loss and pathogen pollution of coastal ecosystems with potential to generate negative impacts in marine biodiversity. toxoplasma gondii is the etiological agent of zoonotic disease toxoplasmosis, and is associated with cat abundance and anthropogenic disturbance. the presence of t. gondii oocysts in the ocean has negatively affected the health status of the threatened south ... | 2018 | 29924844 |
| urban wildlife in times of covid-19: what can we infer from novel carnivore records in urban areas? | the onset of the covid-19 pandemic brought an unusual decrease in human activity associated with partial and total lockdowns. simultaneously, a series of wildlife sightings-mainly in urban areas-have been brought to public attention and often attributed to lockdown measures. here we report on a series of wild carnivore records, including threatened species, obtained through camera traps set in urban forests, campuses, suburbs, and peri-urban areas of two cities in chile, during partial lockdown ... | 2020 | 33077221 |