Prey selection and trophic position of southern river otter. The influence of riparian vegetation, woody debris, stream. All species are vulnerable to climate change, with global vulnerability index ranging from. One of the most important species is the southern river otter lontra provocax, referred here as otter, a semiaquatic species that is a top predator of river and marine fauna and is considered to be the otter with the smallest distribution in the world 23, 24. American mink mustela vison, originally bred in fur farms, have become established in areas occupied by native endangered southern river otter lontra provocax, in patagonia. It is physically similar to the northern and southern river otter, which occur directly north and south of this species range.
In accordance with european experience, this biological invasion in south america raises questions about the interaction between invasive mink and native otter, from the viewpoints of both community assembly and conservation. It sometimes is considered a subspecies of lontra canadensis. In all cases, trees were rooted using lontra provocax and l. The haplotypes are represented by different colours such as the figure 4. Habitat use and spatial behaviour of the endangered. Lontra provocax thomas 1908 is one of the two otter species that inhabits chile. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple faq for additional information. Given the evidence for saturation in the cr, divergence times for inferred phylogeographic partitions were estimated for ds2 only. Wildscreens arkive project was launched in 2003 and grew to become the worlds biggest encyclopaedia of life on earth. Marineliving populations of north american otters occur northward from about san francisco in the pacific and marthas vineyard in the atlantic, although there is anecdotal evidence of marine foraging.
Sea otters occupy a broad range of marine habitats, from protected bays and estuaries to exposed outer shores, while chungungos occur only along exposed shorelines. While most studies of their diet and habitat use have been carried out in freshwater habitats, our study is the first one on these aspects in a predominantly palustrine wetland. Spatial distribution and diet of the neotropical otter lontra. December 2009 learn how and when to remove this template message. In addition, we quantified prey availability using electrofishing. The length of the neotropical otter can range from 90150 centimetres 3559 in, of which the tail. Otters are considered as top predators and participate in ecosystem services and affect community structure by the modulation of prey densities.
Download fulltext pdf download fulltext pdf diversity of mtdna in southern river otter lontra provocax from argentinean patagonia article pdf available in the journal of heredity 992. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. The southern river otter lontra provocax is an endangered species. Environmental correlates of the distribution of southern river otters. Phylogeography and demographic history of the neotropical. The southern river otter is listed as endangered, due to illegal hunting, water pollution, and.
Conservation implications, biological conservation on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Diversity of mtdna in southern river otter lontra provocax from. The influence of riparian vegetation, woody debris, stream morphology and human activity on the use of rivers by southern river otters in lontra provocax in chile volume 37 issue 4 gonzalo medinavogel, vera s. Jun 26, 2010 the southern river otter or huillin lontra provocax has been classified as endangered, with the loss of riparian forest identified as the main threat to its survival. Can be confused with this is the only truly marine otter along the west and southwest coasts of south america, although there are southern river otters lontra provocax along some parts of the coast, and marine otters do enter rivers on occasion. It has a patchy distribution in southern chile and argentina, inhabiting both freshwater and marine habitats. All structured data from the file and property namespaces is available under the creative commons cc0 license. However, marine otters tend to occur in exposed outer coast habitats, while river otters are often found in more protected inner waters most live. In the neotropical otter, lontra longicaudis, variation in the shape of the rhinarium of three potential subspecies has been described but it is not known whether there is a pattern to the morphometric variation in the skull throughout. This page was last edited on 19 december 2019, at 08. This page was last edited on 14 september 2017, at 21.
Marineliving populations of north american otters occur northward from about san francisco in the pacific and marthas. Files are available under licenses specified on their description page. Scaledependent analysis of an ottercrustacean system in. Environmental correlates of the distribution of southern river otters lontra provocax at different ecological scales volume 37 issue 4 m. The north american river otter lontra canadensis, also known as the northern river otter or the common otter, is a semiaquatic mammal endemic to the north american continent found in and along its waterways and coasts. The genus comprises four living and one known fossil species. Phylogeography of the patagonian otter lontra provocax. An adult north american river otter can weigh between 5. The river otter is protected and insulated by a thick, waterrepellent coat of fur. Studies of morphometric variation make it possible to delimit species and geographic intraspecific variation, mainly in species with wide distribution ranges. Do alien north american mink compete for resources with. The neotropical otter or neotropical river otter lontra longicaudis is an otter species found in central america, south america and the island of trinidad. A new microphallid digenea species from lontra provocax.
These species were previously included in the genus lutra, together with the eurasian otter, but they have now been moved to a separate genus. Here, we further test this hypothesis based on phylogeographic inferences from a semiaquatic species that is a top predator of river and marine fauna, the huillin or southern river otter lontra provocax. Diversity of mtdna in southern river otter lontra provocax. The polar bear, sea otter and marine otter, lontra felina, of chile, pinnipeds, sirenians, and baleen whales all have. Morphological variability of the cranium of lontra. Feeding of the neotropical river otter lontra longicaudis in the coastal region of the rio grande do sul state, southern. The southern river otter is listed as endangered, due to illegal hunting, water pollution, and habitat loss. Read habitat use and spatial behaviour of the endangered southern river otter lontra provocax in riparian habitats of chile. Lontra longicaudis olfers, 1818 taxonomia biologia. The southern river otter or huillin lontra provocax has been classified as endangered, with the loss of riparian forest identified as the main threat to its survival.
However, we found that, for a given species, climate change can have both positive and negative effects on different components of extrinsic exposure, and that measures of species sensitivity. Knowledge on the feeding ecology and habitat use of a species is of essential value for effective conservation. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. Environmental correlates of the distribution of southern. The conservation status of the southern river otter in chile is of concern mainly due. Reversible ketaminemedetomidine anesthesia in wild southern. We collected spraints and recorded characteristics of the deposition sites from 20072010.
In this study, noninvasive molecular methods were used to investigate the genetic diversity and haplotype distribution of l. Habitat use and diet of endangered southern river otter lontra. Lontra provocax is an endemic species from patagonia that has been categorized as endangered by the international union for conservation of nature. Nevertheless, diet of the southern river otter lontra provocax has been described only based on the frequency of occurrence of prey in feces. It furthers the universitys objective of excellence in research, scholarship, and education by publishing worldwide. Toxoplasma gondii infection in wild mustelids and cats across. Endangered southern river otters lontra provocax huillin are confined to southern chile and three isolated areas of argentina, the most important being the.
Pdf lontra provocax, southern river otter researchgate. Pdf habitat use and diet of endangered southern river otter lontra. By juliana a vianna, gonzalo medinavogel, claudio chehebar, walter sielfeld, carlos olavarria and sylvain faugeron. Oct 01, 2012 read a new microphallid digenea species from lontra provocax mammalia. Moreover, to further minimize the effects of saturation, we limited this analysis to genus lontra, thus excluding any more distant. Analyzing a total of 2261 bp of mitochondrial dna mtdna revealed the recent divergence of l. Lontra provocax, mammalian species, american socoiety of mammologists, no.
Females with cubs and adult otters displaying mating behaviours were the only social group recorded. Lontra provocax is an endemic species from patagonia that has been categorized as. Download fulltext pdf download fulltext pdf download fulltext pdf. Nine marine otters lontra felina were anesthetized 15 times with a combination of ketamine 5. For full access to this pdf, sign in to an existing account, or purchase an annual subscription. Read a new microphallid digenea species from lontra provocax mammalia. Oxford university press is a department of the university of oxford. The spatial behaviour of 10 southern river otters lontra provocax was analysed using radiotracking data collected in the queule river, southern chile.
Adaptive divergence to marine habitat or signature of southern glacial. Marineliving populations of lontra provocax southern river otter occur in the protected inner waters of coastal chile and southern argentina. We used new information on distribution from argentina to define their status. There are no data on the huillins population structure and dynamics, and no estimate of its abundance or population trends at a relevant. The southern river otter lontra provocax is a species of otter that lives in chile and argentina. Mustelidae from freshwater environments of northwestern patagonia argentina, journal of parasitology on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Times to initial effect and induction period ranged from 1. With the help of over 7,000 of the worlds best wildlife filmmakers and photographers, conservationists and scientists, featured multimedia factfiles for more than 16,000 endangered species. Pdf diversity of mtdna in southern river otter lontra. Lontra provocax along some parts of the coast, and marine otters do enter rivers on occasion.
Lontra provocax distribution in dark gray medina, 1996 and ice sheet coverage limit during the last glacial maximum in dashed line mcculloch et al. Pdf lontra provocax, southern river otter alejandro. Mammal species of the world a taxonomic and geographic reference. However, marine otters tend to occur in exposed outer coast habitats, while river otters are often. Habitat use and spatial behaviour of the endangered southern. The other species are semiaquatic although chungungos lontra felina feed exclusively in marine habitats. Lontra provocax and lutra nippon were in various publications considered synonymous with l. It feeds almost exclusively on the genera of macrocrustacea. Hello fellow editors, i have just modified 1 external links on lontra provocax. Serge lariviere, lontra provocax, mammalian species, issue 610, 5 may 1999, pages 14. Defining conservation status using limited information. Results we examined mtdna sequences of the control region, nd5 and cytochromeb 2151 bp in total in 75 samples of. Prey selection and trophic position of southern river.
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