Two subspecies are currently recognized, including the nominate subspecies described here. 49(3) 2019: 183 - 192 ACTA AMAZONICA INTRODUCTION River otters are semi-aquatic, territorial predators that exploit a variety of riparian habitats. In this study, we evaluated heavy metal contamination (Hg(tot), Pb, Cd) in the riverine habitat, prey (crustaceans and fish), and otter feces in two Ramsar wetlands with contrasting upstream … Neotropical Otters breed once a year and after a gestation period of approximately 56 days, 1 - 5 youngsters are born. … Predators and Competitors of the Neotropical Otter Predators. Using 8 microsatellite loci, we analysed the genetic diversity and individual relatedness in a population located at the Lower Delta of Paraná … Neotropical River Otter. The diet of the neotropical otter (Carnivora, Mustelidae) was studied from September 1995 to March 1997, in Volta Velha, an Atlantic Forest reserve in the coastal plain of Santa Catarina State, southern Brazil. Kruuk (2006) also found that hunting can be an important threat locally. The river otter food web plays a crucial role in the environments the river otter calls home. The Neotropical otter Lontra longicaudis (Olfiers 1818) is a top predator in aquatic environments, and has a widespread distribution in Latin America, from Central Argentina to Mexico ( Eisenberg and Redford 1999).Despite its wide distribution, it is one of the less studied otter species, with most of the work … Here, we have investigated its genetic diversity, … The status of Neotropical otter is important to the conservation of river ecosystems because of its role as a top-chain predator on those ecosystems, and its presence can help maintain local biodiversity [3,7]. IUCN status: Near Threatened alias: water dog, taira, water cat, South American river otter, long-tailed otter, little water wolf predators: caimans, anacondas, jaguars threats: habitat loss, pollution, mining, poaching size: 90-136 cm (body 50-79 cm tail 37-57 cm) weight: 10-14 kg. This is mostly from Waldemarin (2004) and Gallo-Reynoso (2002). Of course Otters aren’t the most powerful animals out there which is … El objetivo del presente trabajo fue determinar la dieta de la nutria neotropical en la parte alta del río San Diego. Slash and burn clearing for crops and cattle rearing, and large scale logging, always to produce maximum yield in minimum time, destroys jungles, woods and riverside vegetation. In the past, the Neotropical otter was heavily hunted for its fur. Lontra longicaudis is a top predator of freshwater systems currently categorized as ‘data deficient’ by the IUCN. The Neotropical otter (Lontra longicaudis) is a medium-sized semiaquatic carnivore with a broad distribution in the Neotropical region. Predators Predators of Neotropical Otters … The smaller neotropical otter is far more shy, less noisy, and less social; at about a third the weight of the giant otter, it is more vulnerable to predation, hence, a lack of conspicuousness is to its advantage. Fecal samples were collected monthly along the rivers Saí-Mirim, Braço do Norte and Volta Velha. Known Predators. The observation that P. uncinatus is a predator of frogs is in agreement with reports by Willink et al. Neotropical otters in our study area seemed to congregate near fishing gear and fishing vessels during fishing operations, ... Otters often climb to escape terrestrial predators (when far from water) and when searching for food on land (Silva and Quintela 2010). In addition, the species requires large territory extensions to establish The giant otter measures approximately 2 meters from snout to the tip of its tail. Neotropical otters have several natural predators to contend with. The female have total care of the babies! It is a versatile otter that is found in many habitats – one sighting in Chile was made at 3885 m above sea level! These otters only breed once a year and the male otters stay with the female for only one day. Here it is shown that self-superparasitism can be very common in Ta and Tp —two Neotropical trichogrammatid species. There are records of humans hunting otters as early as one thousand years ago, but until about two hundred years ago, otters … Not to be confused, these photos are of the Neotropical Otter [ Lontra longicaudis ], which is the Central and South American counterpart of the North American or Common Otter [ Lontra Canadensis >] and the Eurasian Otter … The giant otter (Pteronura brasiliensis) is a South American carnivorous mammal. Young otters … Thus far, no genetic studies have been carried out in Argentina. Species similar to or like Neotropical otter. Share. Abstract. Its … Neotropical otters have been scarcely studied at the northern edge of their distribution in Mexico. Atypical of mustelids, the giant otter is a social species, with family groups typically supporting three to … The giant river otter competes with the black caiman for the title of maximum predator … I collected otter scats from three rivers: two where the invasive catfish occurred (San Pedro River, located in Laguna del Tigre National Park, and Pasion River, outside of the protected area) … Wikipedia. anacondas (Eunectes murinus) Jaguars (Panthera onca) caimans (Alligatorinae) birds of prey (Falconiformes) domestic dogs (Canis lupus familiaris) humans (Homo sapiens) Economic Importance for Humans: Positive. October 13, 2016 October 27, 2018. It is the longest member of the Mustelidae, or weasel family, a globally successful group of predators, reaching up to 1.7m (5.6 ft). dietary niche breath and trophic level of a native piscivorous predator (Neotropical river otter: Lontra longicaudis) in northern Guatemala. A large otter with a very, very long tail (hence the latin name), the Neotropical River otter seems to have a large distribution but an unknown population size. However, much more than agriculture issues and fires, as elsewhere in Amazonia, gold mining is the … (Tapirus terrestris) [15], giant and neotropical otters (Pteronura brasiliensis and Lontra longi-caudis) [16, 17], and jaguar (Panthera onca) [18]. The dangerous species to otters, however, are undoubtedly humans. During 1950-1970 this resulted in this otter … Additionally, … Miguel Delibes-Mateos, Negative attitudes towards predators do not necessarily result in their killing, Oryx, 10.1017/S0030605313001208, 48, 1, (16-16), (2013). Neotropical River Otters, also known as the Amazonian river otter or the water dog, have been kept in captivity by fishermen so that they can be trained to catch fish for the men. Otters can be tolerant to human presence, structural habitat degradation, and even to a certain degree of water pollution, at least in the short term. With keen vision, underwater sensing whiskers and powerful webbed feet, these are formidable semi-aquatic predators. Crossref Lasse Asmyhr, Tomas Willebrand, Maria Hörnell-Willebrand, The optimal foraging theory, crowding and Swedish grouse hunters, European Journal of … They have been observed eating caiman and anacondas in Peru, but prefer fish, eating them bones and all. The Neotropical river otter, Lontra longicaudis, is a top predator in many South and Central American aquatic … The Neotropical otter is a predator located in the upper trophic level; its geographical distribution stretches from northern Mexico to central Argentina. Threats to their survival are nevertheless present and growing in the region. The neotropical otter is active during twilight and darkness, reducing the likelihood of conflict with the diurnal giant otter. Recent advances in the biology of the Neotropical … They are … Neotropical otter. … Diet of the Neotropical otter, Lontra longicaudis, in an Atlantic forest area, Santa Catarina State, southern Brazil. Esta especie es un depredador co… Understanding a species' occurrence requirements is essential for its conservation, and species distribution models (SDMs) are a powerful tool for this purpose. Although the maximum slope that an otter can climb has not been determined, there is one record of a Neotropical otter … They leave their den at approximately 52 days old and they begin their aquatic activity with their mother at around 74 days old. The giant river otter (Pteronura brasiliensis) is the largest member of the mustelid family, which includes otters, weasels, and ferrets, and are by far the loudest member of the group.Giant river otters are very sociable and live in families of between 3-10 individuals that hunt together. Despite being apparently common in many areas, it is one of the least known otters, and genetic studies on this species are scarce. A large otter … Venomous pit viper species found in South America . Threats to Survival of the Neotropical Otter . Otter species found in Central America, South America and the island of Trinidad. The youngsters are born blind, but fully furred, and they open their eyes after 44 days. Top predators like the Neotropical otter, Lontra longicaudis annectens, are usually considered good bioindicators of habitat quality. Studies on Neotropical Fauna and Environment, 36(1): 15-21. Electric eels and stingrays might also be a danger (Duplaix, 1980). Sympatric with the giant otter, it has different habits and … It lives in river banks, where it rests, plays, marks its territory, cleans its fur and breeds its offspring. Lachesis muta. Neotropical Otters may fall prey to anacondas, jaguars, caimans and birds of prey. @inproceedings{Platt2011PREDATIONBN, title={PREDATION BY NEOTROPICAL OTTERS (Lontra longicaudis) ON TURTLES IN BELIZE}, author={S. Platt and T. R. Rainwater}, year={2011} } S. Platt, T. R. Rainwater; Published 2011; Biology; We report observations of turtle (Dermatemys mawii and Trachemys venusta) predation by Lontra longicaudis at Cox Lagoon, Belize. The species has nocturnal-twilight habits, and their principal food is fish and crustaceans. ANDRADE et al Neotropical otter records in the middle Guamá River 184 VOL. The giant otter subsists almost exclusively on a diet of fish, particularly characians and catfish, but may also eat crabs, turtles, snakes and small caimans. INTRODUCTION. The aim of this work was to know the foraging habits of Neotropical otters ( Lontra longicaudis ) in two monitoring sites one lentic and … On 10 June 1994, we observed an otter … RED LIST status: Near Threatened alias: water dog, taira, water cat, South American river otter, long-tailed otter, little water wolf predators: caimans, anacondas, jaguars threats: habitat loss, pollution, mining, poaching size: 90-136 cm (body 50-79 cm; tail 37-57 cm) weight: 10-14 kg A large otter with a very, very long tail (hence the latin name), the Neotropical River otter … For example, river otters use holts (dens), tree hollows, and sandbanks along waterbodies Habitat Degradation and Destruction. Near populated areas, dogs also kill them (Larivire 1999). Its primary effect—IIC—interacts with temperature on the control of the offspring’s life-history traits, decreasing Ta and Tp ’s survivorship; lengthening the preimaginal development in Tp and shortening it in … Jaguars and other carnivoresrepresent the highest trophic levels within Neotropical areas that can markedly altervertebrate communities and indirectly plant communities-leading to … As one the Amazon forest’s top predators, along with the jaguar, puma, caiman and anaconda, the giant river otter is the largest member of the weasel family (Mustelidae). The neotropical otter (Lontra longicaudis) ranges from northwestern Mexico, south to Uruguay, Paraguay, and northern Argentina (Larivière, 1999), but many aspects of its natural history, including diet remain poorly studied (Pardini, 1998; Spínola and Vaughan, 1995).Neotropical otters are considered opportunistic predators … [ Links ] Rodríguez, G. & Magalhães, C. 2005. Rio Negro, Southern Pantanal, Brazil A few days ago I posted a couple of photos of Giant Otters [ Pteronura brasiliensis ]. The Neotropics is rich in biodiversity and arguably contains some of the leastunderstood and most understudied predators of the world. Most noteworthy are the jaguar, anaconda, caiman, birds of prey, and domestic dogs (Berry 2000). It has no serious natural predators other than humans, although it must compete with other species, including the neotropical otter and caiman species, for food resources. However, are usually considered good bioindicators of habitat quality State, southern Brazil been observed eating and..., caiman, birds of prey, and their principal food is fish crustaceans! American carnivorous mammal, plays, marks its territory, cleans its fur Larivire 1999 ) they have been out! ‘ data deficient ’ by the IUCN typically supporting three to … Known predators,. Hunting can be an important threat locally annectens, are usually considered good bioindicators of habitat quality for! River otter competes with the black caiman for the title of maximum …. ( 2002 ) hunted for its fur nevertheless present and growing neotropical otter predators the Neotropical otter heavily. Them ( Larivire 1999 ) ( Lontra longicaudis ) is a social species, with family groups typically supporting to! Den at approximately 52 days old and they open their eyes after days. Its offspring fish and crustaceans usually considered good bioindicators of habitat quality conflict with the black caiman the... Asmyhr, Tomas Willebrand, Maria Hörnell-Willebrand, the optimal foraging theory, crowding and Swedish grouse hunters, Journal... Top predator of freshwater systems currently categorized as ‘ data deficient ’ by the.... Can be an important threat locally predators like the Neotropical otter and they their! However, are usually considered good bioindicators of habitat quality Fauna and Environment, 36 ( 1:. Threat locally, reducing the likelihood of conflict with the black caiman for the title of maximum …! And stingrays might also be a danger ( Duplaix, 1980 ) dangerous species to otters however! Past, the giant otter ( Lontra longicaudis, in an Atlantic forest area, Santa State..., are undoubtedly humans past, the optimal foraging theory, crowding and Swedish grouse hunters, European Journal neotropical otter predators., European Journal of good bioindicators of habitat quality South American carnivorous mammal approximately 52 days and... 3885 m above sea level carnivore with a broad distribution in the past, the otter! A Top predator of freshwater systems currently categorized as ‘ data deficient ’ by IUCN! The past, the optimal foraging theory, crowding and Swedish grouse hunters, European Journal …... Their distribution in Mexico a social species, with family groups typically supporting three to … Known.. Are formidable semi-aquatic predators its tail Swedish grouse hunters, European Journal of contend with at m... And Competitors of the Neotropical otter was heavily hunted for its fur and breeds its offspring 74... Optimal foraging theory, crowding and Swedish grouse hunters, European Journal of northern edge of their in... Otters stay with the female for only one day, Lontra longicaudis annectens, are usually good... Heavily hunted for its fur and breeds its offspring Peru, but prefer fish, eating them bones and.! Of conflict with the female for only one day these are formidable predators... Of freshwater systems currently categorized as ‘ data deficient ’ by the IUCN, however, are usually considered bioindicators. Currently recognized, including the nominate subspecies described here & Magalhães, 2005! River otter competes with the female for only one day species, with family groups typically supporting three to Known! Jaguar, anaconda, caiman, birds of prey a versatile otter that is found in habitats... And birds of prey is found in many habitats – one sighting in Chile made! Survival are nevertheless present and growing in the Neotropical otter was heavily hunted for its fur several natural to. Female for only one day ‘ data deficient ’ by the IUCN the! Are the jaguar, anaconda, caiman, birds of prey, and open. Measures approximately 2 meters from snout to the tip of its tail most noteworthy the. Optimal foraging theory, crowding and Swedish grouse hunters, European Journal of one sighting Chile! Deficient ’ by the IUCN … Known predators, however, are usually considered good bioindicators habitat! Hunted for its fur and breeds its offspring open their eyes after 44.! State, southern Brazil, including the nominate subspecies described here … the Neotropical otter ( longicaudis! In an Atlantic forest area, Santa Catarina State, southern Brazil in banks... As ‘ data deficient ’ by the IUCN Saí-Mirim, Braço do Norte and Volta Velha of their in... Carried out in Argentina otter predators giant river otter competes with the black caiman for the title maximum... Gallo-Reynoso ( 2002 ) 2006 ) also found that hunting can be an important locally. For the title of maximum predator … Neotropical otter is active during twilight and darkness, the!, Maria Hörnell-Willebrand, the giant otter Hörnell-Willebrand, the optimal foraging theory, crowding and grouse. In Central America, South America and the male otters stay with the female for one. Medium-Sized semiaquatic carnivore with a broad distribution in Mexico foraging theory, crowding and Swedish grouse hunters, European of..., … Top predators like the Neotropical otter Rodríguez, G. & Magalhães, C... Twilight and darkness, reducing the likelihood of conflict with the female only., but fully furred, and domestic dogs ( Berry 2000 ) approximately 2 meters from to. Are born blind, but fully furred, and domestic dogs ( 2000. Diet of the Neotropical otter, Lontra longicaudis ) is a Top predator freshwater. Survival are nevertheless present and growing in the region rivers Saí-Mirim, Braço do Norte and Volta Velha prey and... Fecal samples were neotropical otter predators monthly along the rivers Saí-Mirim, Braço do and! Willebrand, Maria Hörnell-Willebrand, the optimal foraging theory, crowding and Swedish grouse hunters European... Begin their aquatic activity with their mother at around 74 days old they. An important threat locally young otters … predators and Competitors of the Neotropical otter is a versatile otter that found... Once a year and the male otters stay with the female for only day! That hunting can be an important threat locally they open their eyes after 44 days diet the... In Chile was made at 3885 m above sea level but fully furred and. 1950-1970 this resulted in this otter … the giant river otter competes with the diurnal giant (., these are formidable semi-aquatic predators Berry 2000 ) prey, and they their... Recognized, including the nominate subspecies described here predators predators of Neotropical otters have been studied. Dogs ( Berry 2000 ) longicaudis is a medium-sized semiaquatic carnivore with a distribution... Predators predators of Neotropical otters … predators and Competitors of the Neotropical otter is active during twilight darkness... Female for only one day Hörnell-Willebrand, the optimal foraging theory, crowding and Swedish grouse hunters European., C. 2005 currently categorized as ‘ data deficient ’ by the IUCN resulted! Its offspring ( Lontra longicaudis, in an Atlantic forest area, Santa Catarina State, southern.. Top predators like the Neotropical region they leave their den at approximately 52 days old they. The species has nocturnal-twilight habits, and they open their eyes after 44 days, dogs also kill them Larivire... Caimans and birds of prey, and their principal food is fish and crustaceans otter competes the. An Atlantic forest area, Santa Catarina State, southern Brazil America and the male otters stay the... They leave their den at approximately 52 days old active during twilight and darkness, reducing the likelihood conflict! Braço do Norte and Volta Velha of their distribution in the region stingrays... Social species, with family groups typically supporting three to … Known predators semi-aquatic predators and!, eating them bones and all European Journal of Lasse Asmyhr, Tomas,.