scholarly journals Turgida turgida (Nematoda: Physalopteridae) parasitic in white-bellied opossum, Didelphis albiventris (Marsupialia: Didelphidae), state of Mato Grosso do Sul, Brazil

2011 ◽  
Vol 31 (1) ◽  
pp. 78-80 ◽  
Author(s):  
Roberta M.P. Humberg ◽  
Luiz Eduardo R. Tavares ◽  
Fernando Paiva ◽  
Elisa T. Oshiro ◽  
Raquel A. Bonamigo ◽  
...  

Turgida turgida have been largely reported parasitizing Didelphis species in North and South America based on light microscopy observation. However, the features that differentiate T. turgida from other physalopterid species should be observed using scanning electron microscopy (SEM). A female white-bellied opossum, Didelphis albiventris, arrived dead at the Centro de Reabilitação de Animais Silvestres (CRAS) in the municipality of Campo Grande, state of Mato Grosso do Sul, Brazil. During the necropsy, adult nematodes were collected from stomach and intestine. The nematodes were determined to be adult specimens and submitted to SEM for the species determination. This is the first report of T. turgida confirmed by SEM in the Neotropical region and the first report in an urban area in the state of Mato Grosso do Sul, Brazil.

2011 ◽  
Vol 20 (1) ◽  
pp. 85-87 ◽  
Author(s):  
Santiago Benites de Pádua ◽  
Márcia Mayumi Ishikawa ◽  
Fabiana Satake ◽  
Gabriela Tomas Jerônimo ◽  
Fabiana Pilarski

The blood infection by Trypanosoma sp. in tuvira (Gymnotus aff. inaequilabiatus) from the Pantanal wetland was reported in this study. Ten fish from the Paraguay River in the Pantanal were evaluated for the presence of hemoflagellates. Trypomastigotes of Trypanosoma sp. were observed in blood smears from three fish (30% prevalence) and some forms were seen to be undergoing division. Using the diagnostic methods of fresh examination and blood centrifugation in hematocrit capillary tubes, the prevalence rate was 80%. This is the first report of Trypanosoma sp. in tuvira in Brazil.


Author(s):  
Wesley Arruda Gimenes Nantes ◽  
Wanessa Teixeira Gomes Barreto ◽  
Filipe Martins Santos ◽  
Gabriel Carvalho de Macedo ◽  
Andreza Castro Rucco ◽  
...  

2013 ◽  
Vol 4 (1-2) ◽  
pp. 156-159 ◽  
Author(s):  
Robson F.C. Almeida ◽  
Marcos V. Garcia ◽  
Rodrigo C. Cunha ◽  
Jaqueline Matias ◽  
Marcelo B. Labruna ◽  
...  

2013 ◽  
Vol 103 (4) ◽  
pp. 361-366 ◽  
Author(s):  
Ademir K. M. Oliveira ◽  
Frederico T. F. Leme

A endozoocoria é um dos processos mais importantes na dispersão de sementes em florestas tropicais, dependente em grande parte de aves e mamíferos, onde a passagem dos frutos pelo sistema digestório permite a escarificação química das sementes e sua germinação. Entre as diversas espécies consumidas por animais está Rapanea ferruginea Ruiz et Pav. (Myrsinaceae), uma árvore perenifólia, heliófila, higrófila e pioneira, cujos frutos são ingeridos pelo marsupial Didelphis albiventris Lund, um pequeno mamífero onívoro de hábito noturno. Levando-se em consideração a importância do conhecimento sobre os processos de mutualismo dispersivo, o objetivo neste experimento foi avaliar a germinação de sementes de R. ferruginea que passaram pelo sistema digestório de D. albiventris. As sementes foram submetidas a seis tratamentos: (1) Grupo-Controle - sementes sem tratamento; (2) Grupo Lixa - sementes escarificadas; (3) Grupo Sistema Digestório - sementes que passaram pelo sistema digestório dos animais; (4) Grupo pH 2; (5) Grupo pH 3; (6) Grupo pH4. Os resultados indicaram que o processo de escarificação foi necessário para a obtenção de maiores taxas e velocidades de germinação da espécie estudada. O tratamento com lixa alcançou resultados significativamente diferentes do Grupo Controle, porém inferiores aos demais tratamentos. O tratamento Grupo Sistema Digestório apresentou a maior taxa e velocidade de germinação. Estes resultados indicam que D. albiventris pode ser considerado um frugívoro indutor da taxa e velocidade de germinação de R. ferruginea.


2018 ◽  
Vol 23 (5) ◽  
pp. 935
Author(s):  
Erica Fernanda G. Gomes de Sá ◽  
Vinicius Da Silva Rodrigues ◽  
Marcos Valério Garcia ◽  
Namor Pinheiro Zimmermann ◽  
Vanessa Do Nascimento Ramos ◽  
...  

This experiment studied tick fauna associated to Didelphis albiventris Lund 1840 from a Cerrado area (Mato Grosso do Sul State, non-adjoining to Pantanal) inserted in a pasture and agricultural activities matrix, with few natural preserved forest patches. Authors also summarized data on ticks parasitizing Didelphis spp. in Brazil, and discussed infestation patterns in different biomes and locations. Study took place in Cervinho Farm, Bandeirantes Municipality. For captures, Tomahawk-like traps were distributed along two forest patches (30 each) during five nights. Captures occurred monthly (July/2013 to September/2014), sampling both fragments on alternate months. Animals were sedated and ticks were collected and stored in vials containing ethanol (70%) for identification. 51 D. albiventris were captured in 15 campaigns. Tick prevalence was 100%, and 49.5% of the animals were co-infested by two or more tick species. Four parasitizing species were found: Amblyomma sculptum Berlese, 1888 (78 nymphs), Ixodes loricatus Neumann, 1899 (56 adults), Amblyomma dubitatum Neumann, 1899 (45 nymphs), Amblyomma coelebs Neumann, 1899 (32 nymphs) and Amblyomma sp. (123 larvae). A. sculptum was the most abundant tick, but most frequent species were A. coelebs and A. dubitatum, followed by I. loricatus. Co-occurrences of more than two species were observed among all tick pairs. D. albiventris usually presents high prevalence of tick infestation. However, this study presented 100% prevalence. Knowledge of host-parasite relation and interactions between different ticks that coexist on a same host are essential, since such interaction may favor pathogen dissemination. This is of special relevance regarding D. albiventris, known for participating in maintenance of ecological cycles of Spotted Fever Group rickettsiae.


2013 ◽  
Vol 46 (1) ◽  
pp. 114-115 ◽  
Author(s):  
Marilene Rodrigues Chang ◽  
Camila Arguelo Biberg ◽  
Fernando Aguilar Lopes ◽  
Andyane Freitas Tetila ◽  
Antonio Carlos Campos Pignatari

2016 ◽  
Vol 68 (4) ◽  
pp. 927-930 ◽  
Author(s):  
A.F. Brilhante ◽  
A.I. Souza ◽  
M.E.C. Dorval ◽  
A.O. França ◽  
R.B. Lima ◽  
...  

ABSTRACT Cutaneous leishmaniasis has several species of Leishmania as agents, and a wide variety of wild and domestic animals as hosts and different species of phlebotomines as vectors. A case of cutaneous leishmaniasis in a dog coming from an agricultural settlement is described. This is the first report of parasitism in a dog by Le. (Viannia) braziliensis in Mato Grosso do Sul State. Attention is called to the importance of including this protozoonosis in the differential diagnosis of dermopathies in dogs as also the need to assess the importance of the domestic dog as a possible reservoir of Le. braziliensis.


Zootaxa ◽  
2017 ◽  
Vol 4353 (3) ◽  
pp. 540 ◽  
Author(s):  
JOYCE ANDREIA DOS SANTOS ◽  
REGINA MENEGUETTI PASSOS ◽  
ANGELO ANTONIO AGOSTINHO ◽  
ANDRÉA BIALETZKI

The early development of Tatia neivai (Ihering 1930) was analyzed (i) to characterize its morphological, morphometric and meristic development; and (ii) to examine its possible ontogenic variation as a result of the development of structures and organs necessary for survival. Samples were collected in the Baía River, basin Paraná River, Mato Grosso do Sul State, Brazil, between February 1999 and April 2000. After identification, the specimens were separated according to notochord development, and the morphometric and meristic characters were measured and counted. Forty-seven larvae and one juvenile with standard length ranging from 6.10 to 23.10 mm were analyzed. Larvae exhibit a cylindrical and highly pigmented body, small eyes, short intestine, terminal mouth, one pair of maxillary barbels and two pairs of mentonian barbels (relatively short). The juveniles presented a body shape similar to their adults. The total number of myomeres (33–35, 12 to 14 pre-anal and 20 to 23 postanal). Number of fin rays: dorsal I+4, anal I+9; pectoral I+5 and ventral six. During ontogeny, morphological changes observed in T. neivai have important ecological consequences, especially between flexion and postflexion stages (metamorphosis) when the larvae develop all necessary structures for its survival, such as locomotion and feeding. 


2012 ◽  
Vol 87 (3) ◽  
pp. 470-472 ◽  
Author(s):  
Roberta M. P. Humberg ◽  
Raquel A. Bonamigo ◽  
Maria do Socorro Pires e Cruz ◽  
Alessandra Gutierrez de Oliveira ◽  
Elisa T. Oshiro ◽  
...  

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