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Magalhaes K.M.,Federal Rural University of Pernambuco | Borges J.C.,Fundacao Mamiferos Aquaticos | Pitanga M.E.,Fundacao Mamiferos Aquaticos
Anais da Academia Brasileira de Ciencias | Year: 2015

The present paper presents the first population data for the Southern Hemisphere of the rare seagrass Halophila baillonis. The population studied is located in a calm, reef-protected area at depths ≤ 5 m, covering 12,000 m2 (400 m long by 30 m wide, oriented parallel to the coastline). The population generally demonstrated low shoot density and biomass during the rainy season, with significant differences between seasons, being found only for aboveground biomass. Despite the identification of this new population, the species continues to be considered rare along the Brazilian coast. © 2015, Academia Brasileira de Ciencias. All rights reserved. Source

Borges J.C.G.,Fundacao Mamiferos Aquaticos | Borges J.C.G.,Federal Rural University of Pernambuco | Alves L.C.,Federal Rural University of Pernambuco | Da Gloria Faustino M.A.,Federal Rural University of Pernambuco | Marmontel M.,Institute Desenvolvimento Sustenta Vel Mamiraua
Journal of Zoo and Wildlife Medicine | Year: 2011

Infections by Cryptosporidium spp. in aquatic mammals is a major concern due to the possibility of the waterborne transmission of oocysts. The aim of the present study was to report the occurrence of Cryptosporidium spp. in Antillean manatees (Trichechus manatus) and Amazonian manatees (Trichechus inunguis) from Brazil. Fecal samples were collected and processed using Kinyoun's method. Positive samples were also submitted to the direct immunofluorescence test. The results revealed the presence of Cryptosporidium spp. oocysts in 12.5% (17/136) of the material obtained from the Antillean manatees and in 4.3% (05/115) of the samples from the Amazonian manatees. Cryptosporidium spp. infection was more prevalent in captive animals than in free-ranging specimens. Copyright 2011 by American Association of Zoo Veterinarians. Source

Batista R.L.G.,Fundacao Mamiferos Aquaticos | Batista R.L.G.,State University of Santa Cruz | Schiavetti A.,State University of Santa Cruz | dos Santos U.A.,State University of Santa Cruz | And 2 more authors.
Biota Neotropica | Year: 2012

Stranded cetaceans have scientific value and may confirm the occurrence of some species or indicate their geographical distribution in an area. The collection of biological material can also contribute to improve the knowledge of the species or populations inhabiting certain areas. This study aimed to record live or dead cetaceans found ashore along the coast of Ilhéus, Bahia State, northeastern Brazil. Data were collected through a campaign called "SOS strandings, whales, porpoises and dolphins." Between 1997 and 1999 three hundred posters and five hundred folders were distributed to beach huts, shops, fishing associations and settlements, the city's municipal government, the Brazilian Environmental Agency (IBAMA) and fire stations. During this campaign, which lasted until 2007 it was possible to record 38 cetaceans of ten species on the coast of Ilhéus: Physeter macrocephalus, Megaptera novaeangliae, Globicephala macrorhynchus, Orcinus orca, Peponocephala electra, Stenella clymene, Feresa attenuata, Ziphius cavirostris, Steno bredanensis and Sotalia guianensis. The greatest numbers of records were observed between 2000 and 2003, which was the period after the distribution of banners and posters. The majority of the carcasses were recovered near the city downtown area (<10 km) and there was not a relationship between the state of the carcasses and the distance from that area. Source

Alves M.D.,Federal University of Pernambuco | Alves M.D.,Federal Rural University of Pernambuco | Kinas P.G.,Institute Matematica Estatistica e Fisica | Marmontel M.,Institute Desenvolvimento Sustentavel Mamiraua IDSM | And 5 more authors.
Journal of the Marine Biological Association of the United Kingdom | Year: 2015

We estimated the abundance of Antillean manatees (Trichechus manatus manatus) through a large-scale project conducted in 2010 in north-eastern Brazil and evaluated the efficacy of an aerial survey for conservation purposes. Two observers conducted the survey via flights that maintained an altitude of 150 m and an air speed of 140 km h−1, covering over 2590.2 km2 of the coastline. Strip transects were flown in a zigzag pattern. A total of 67 manatees (on- and off-effort) were recorded in 55 sightings. Historical published records of occurrence were formally incorporated using a Bayesian approach. We estimated the manatee population for north-eastern Brazil in the form of a posterior distribution with a mean of 1104 individuals and a 95% posterior probability interval ranging from 485 to 2221 individuals, which indicates high uncertainty. More large-scale studies in the region are warranted to understand temporal trends, in addition to further studies in hotspot areas, with smaller spatial scales, to reduce the coefficient of variation and to allow the use of improved techniques for monitoring the manatees. A greater emphasis on species-specific characteristics and methods to enhance detection probability (e.g. dual observers) are also recommended. The conditions prevailing along the study area were not conducive to aerial surveillance; thus, the results are not a precise estimate of the manatee population. However, these highlight the importance of conservation efforts for the Antillean manatee, considered the most endangered aquatic mammal in Brazil. Copyright © Marine Biological Association of the United Kingdom 2015 Source

Borges J.C.G.,Fundacao Mamiferos Aquaticos | Da Baviagem Freire A.C.,University of Pernambuco | Attademo F.L.N.,University of Pernambuco | De Lima Serrano I.,Centro Mamiferos Aquaticos ICMBio | And 3 more authors.
Journal of Zoo and Wildlife Medicine | Year: 2012

The aim of this work was to analyze whether there are differences between the development pattern of Antillean manatee (Trichechus manatus) calves born in captivity and those rescued and kept under rehabilitation. Biometrics data were collected from 1990 to 2010 from 38 calves, 29 of which still had the remnants of the umbilical cord and had been rescued from the Brazilian northeastern coastline (Group I), and nine individuals that were born in captivity and remained with their mothers (Group II). Among the measures obtained through biometry, the total length and weight of the animal were recorded. Given that the breastfeeding of calves occurs approximately until the age of 2 yr, data obtained until the 24th month of life of each individual were evaluated. An average increase in weight of 53.50 ± 38.54 kg (mean ± standard deviation SD) was detected in Group I and a gain of 106.87 ± 47.21 kg (mean ± SD) in Group II. From months 13 to 24, no significant difference in the weight increment was observed. A similar pattern occurred with regard to the increase in the overall length during the first year, where animals from Group I grew 34.81 ± 17.94 cm (mean ± SD) and from Group II grew 83.83 ± 28.21 cm, a statistically significant difference. The growth was not significantly different from 13 to 24 mo. The results found in this study identified the need for a review of the nutritional diet offered to orphaned calves rescued and kept in captivity. The results also support the need for a better adequacy of facilities for these animals as a way to encourage the management strategies adopted for manatee calves maintained in captivity. Copyright © 2012 by American Association of Zoo Veterinarians. Source

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