Diet of Lontra longicaudis (Olfers, 1818) (Carnivora: Mustelidae) in three limnic systems in Southern Rio Grande do Sul State, Brazil

Quintela, Fernando Marques; Artioli, Luiz Guilherme Schultz; Porciuncula, Rafael Almeida

doi:10.1590/s1516-89132012000600011

Cited by 10 publications

(2 citation statements)

References 27 publications

(36 reference statements)

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“…Otters inhabit rivers and lakes and feed mainly on crustaceans and fish, but may be more general depending on the environment they are in (Pardini 1998, Quintela et al 2012. Studies conducted in the region have reported that food items, such as fish and other vertebrates, in the diet of Lontra longicaudis (Quintela et al 2012) are parasitized by D. renale larvae (Mascarenhas & Müller 2015, Mascarenhas et al 2016. D. renale life cycle requires the participation of aquatic organisms and fish, considered paratenic hosts of this parasite (Measures 2001).…”

Section: Discussionmentioning

confidence: 99%

Lontra longicaudis infected with canine parvovirus and parasitized by Dioctophyma renale

et al. 2018

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This study describes a case of parvovirus infection in a river otter (Lontra longicaudis) assisted at the Wildlife Rehabilitation Center and Wildlife Screening Center, Federal University of Pelotas (UFPel), Rio Grande do Sul state, Brazil. Clinical signs included apathy, dark and fetid diarrhea, and crusted lesions on the palmar pads of the fore and hind limbs. The animal died after undergoing support treatment with antibiotics, anti-inflammatory, and fluid therapy. At necropsy, the intestines were reddened and edematous and the right kidney was diminished by one third of its normal size and covered with whitish, spongy material. A female Dioctophyma renale was found free in the abdominal cavity. Histologically, dilatation of the intestinal crypts and fusion and blunting of the intestinal villi were observed. In addition, moderate, multifocal lymphocytic enteritis with lymphoid depletion in Peyer’s patches and mesenteric lymph nodes were present. Immunohistochemistry with anti-canine parvovirus monoclonal antibody (anti-CPV) was strongly positive in the bone marrow cells and enterocytes of the intestinal crypts, confirming the diagnosis of parvovirus infection. The peritoneum on the right kidney was expanded with a cuboidal cell border, forming multiple papillary projections associated with eggs of D. renale and severe inflammatory infiltrate (giant cells, macrophages, lymphocytes, eosinophils, and plasma cells). Areas of necrosis and mineralization were also observed. Due to fragmentation and degradation of its natural habitat, the otter approached the urban area and was contaminated with the virus, which is hosted and disseminated by domestic animals. Infection with D. renale can be associated with the large population of parasitized domestic animals, which eliminate the helminth eggs through urine, contaminating the environment where the parasite intermediate and paratenic hosts co-inhabit. The diseases of these animals can be a decline factor of wild populations that inhabit the region and are an alert to spillover risk.

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Section: Discussionmentioning

confidence: 99%

Lontra longicaudis infected with canine parvovirus and parasitized by Dioctophyma renale

et al. 2018

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“…A Lontra longicaudis (Olfers, 1818), é um mamífero carnívoro, semiaquático, discreto, com recentes e ainda raros, registros na região Nordeste do Brasil (Astúa et al, 2010, Dantas & Donato, 2011, Mendonça & Mendonça, 2012Souto, 2012;Laurentino & Sousa, 2014, Pinheiro & Sampaio, 2014Rosas-Ribeiro et al, 2019;Laurentino et al, 2020). Devido ao fato de serem predominantemente ictiófagas (Parera, 1993;Passamani & Camargo, 1995;Pardini, 1998;Quadros & Monteiro-Filho, 2001;Kasper et al, 2004;Nakano-Oliveira, 2006;Kasper et al, 2008;Quintela et a., 2012), o conflito entre lontras e pescadores é quase inevitável (Mason & Macdonald, 1990). Devido aos seus hábitos alimentares, a L. longicaudis sofre retaliações por parte de pescadores artesanais e piscicultores em diversas regiões do Brasil (Pinheiro, 2016;.…”

Section: Introductionunclassified

Covo Reciclado: Novo Modelo De Armadilha De Pesca Para Minimizar Os Conflitos Entre a Lontra E Os Pescadores

Sousa

Laurentino

Corso

2020

HOLOS

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São várias as espécies de mustelídeos que interagem com populações pesqueiras por todo o mundo, porém, são poucos os estudos que abordam o tema no Brasil. Este é o segundo estudo que enfoca os conflitos entre a Lontra longicaudis (Olfers, 1818 - Ordem: Carnivora; Família: Mustelidae; Subfamília: Lutrinae) com a população pesqueira da APA Bonfim Guaraira, localizada no Estado do Rio Grande do Norte. Foram entrevistadas cinco comunidades que ainda realizam a atividade de pesca com covos artesanais em diferentes municípios. A principal preocupação apontada pelos pescadores foi o interesse da L. longicaudis sobre os covos utilizados para pesca de camarão de rio Macrobrachium sp. (Ordem: Decapoda; Família: Palaemonidae) que estão periodicamente sendo quebrados pela lontra, ademais os covos são confeccionados com materiais oriundos da vegetação in locu. Portanto, o objetivo deste trabalho é apresentar uma solução para melhorar os apetrechos (covos) dos pescadores, através da reciclagem com canos de PVC. O covo produzido foi um sucesso para a pesca artesanal e também gerou subsídios para conservação da L. longicaudis. Apesar da constante perseguição na região, é possível constatar que a grande maioria dos pescadores pensam de maneira diferente, compreendendo que as lontras, assim como eles, também dependem do camarão, do peixe e do rio para sobreviver, neste processo novas ideias foram estimuladas entre os demais pescadores para diminuir este conflito.

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Biogeographic patterns in the feeding habits of the opportunist and semiaquatic Neotropical otter

et al. 2017

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Diet of Lontra longicaudis (Olfers, 1818) (Carnivora: Mustelidae) in three limnic systems in Southern Rio Grande do Sul State, Brazil

Abstract: The aim of the present work was to study the diet of Lontra longicaudis in three limnic systems (anthropogenic shallow lakes, pluvial channel and coastal stream)

Cited by 10 publications

References 27 publications

Lontra longicaudis infected with canine parvovirus and parasitized by Dioctophyma renale

Lontra longicaudis infected with canine parvovirus and parasitized by Dioctophyma renale

Covo Reciclado: Novo Modelo De Armadilha De Pesca Para Minimizar Os Conflitos Entre a Lontra E Os Pescadores

Biogeographic patterns in the feeding habits of the opportunist and semiaquatic Neotropical otter

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