17 documents found, page 1 of 2

What do local people know about amazonian manatees? Traditional ecological know...

During 2005-2007, a series of interviews were carried out with the riverside populations of the Oil Province of Urucu (AM, Brasil). The main goal of this work was to characterize the knowledge of the inhabitants of this area regarding the Amazonian manatee (Trichechus inunguis) (listed as Vulnerable on the IUCN Red List). Interviews were conducted with 74 local inhabitants from 33 communities. Between 2004 and ...

Changes in the blood parameters of the Amazonian manatee (Trichechus inunguis) ...

In this study we report the hematological, biochemical and hormonal parameters in a juvenile male Amazonian manatee measured before transport, immediately after transport, and during adaptation to a new facility. The animal was transported from Manaus, Amazonas State, Brazil, to São Paulo, São Paulo State, Brazil, (2,733 km) within 6 hours. Among all blood parameters analyzed, we observed obvious neutrophilia, ...

Phylogeography and demographic history of the neotropical otter (Lontra longica...

The Neotropical otter (Lontra longicaudis) is a medium-sized semiaquatic carnivore with a broad distribution in the Neotropical region. Despite being apparently common in many areas, it is one of the least known otters, and genetic studies on this species are scarce. Here, we have investigated its genetic diversity, population structure, and demographic history across a large portion of its geographic range by ...

Helminths of sotalia guianensis (Cetacea: Delphinidae) from the South and South...

From May 1997 to October 2000, 49 Sotalia guianensis (tucuxi dolphin) incidentally caught in fishing nets or stranded in São Paulo (SP) and Paraná (PR) states in Brazil were necropsied. In total, 17 lungs, 35 stomachs, and 30 intestines were analyzed. Contents were washed through a sieve (mesh, 1.50 mm) and examined under a stereoscopic microscope for parasites. Histopathologic analyses were performed in the lu...

The use of hydroelectric lakes by giant otters Pteronura brasiliensis: Balbina ...

Data on the occurrence and habitat use of giant otters Pteronura brasiliensis in the 4,437 km2 of Balbina hydroelectric lake in central Amazonia, Brazil, were collected from September 2001 to December 2005. Twenty-nine groups of giant otters were recorded in an area corresponding to 10% of the total reservoir. Despite the fact that it is a hydroelectric lake, the water level can vary annually by up to 3.5 m wit...

Toxoplasmosis in a Guiana dolphin (Sotalia guianensis) from Paraná, Brazil

This study describes toxoplasmosis in a by caught Guiana dolphin (Sotalia guinensis) from Paranaguá Bay, Paraná, Brazil. Interstitial pneumonia, multisystemic arteritis, multifocal adrenalitis and hepatitis were the primary lesions observed. These tissues had moderate to severe necrosis and mononuclear cells infiltration usually surrounded by tachyzoites and tissue cysts. Moderate lymphoid depletion was evident...

Parental and alloparental care of giant otters (Pteronura brasiliensis) (Carniv...

Data collected during 6 years showed that alloparental care, despite not being mandatory, plays an important role in the reproductive success of Pteronura brasiliensis when major threats are present. Threats can also trigger cubs to be transferred from one den to another, inducing the species to leave a babysitter in the new den.

Morphology, morphometry and ultrastructure of the Amazonian manatee (Sirenia: T...

This study describes the morphological, morphometric and ultrastructural characteristics of the Amazonian manatee Trichechus inunguis (Natterer, 1883) spermatozoon. The spermatozoa were obtained from a urine sample of an adult T. inunguis kept in captivity. The spermatozoa were analyzed by light and transmission electron microscopy. The head of Amazonian manatee spermatozoa had a flat oval shape and a well dist...

Application of acceleration data loggers to classify the behavior of captive Am...

Cutaneous mycobacteriosis in a captive Amazonian manatee Trichechus inunguis

An adult male Amazonian manatee Trichechus inunguis under human care presented with 3 circular cutaneous lesions on the dorsal aspect of the rostrum and between the nostrils (plenum). Initially these lesions were superficial, hypopigmented, without warmth and non-painful. Microbiological cultures of skin swabs isolated Candida sp. and Pseudomonas aeruginosa, and topical treatment with antiseptic, antifungal, an...