Search Results - "Silva, Vera M. F."

Both cetaceans in the Brazilian Amazon show sustained, profound population declines over two decades by F da Silva, Vera M, Freitas, Carlos E C, Dias, Rodrigo L, Martin, Anthony R

“…Obligate river dolphins occur only in the rivers of Asia and South America, where they are increasingly subject to damaging pressures such as habitat…”
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Living between rapids: genetic structure and hybridization in botos (Cetacea: Iniidae: Inia spp.) of the Madeira River, Brazil by Gravena, Waleska, Silva, Vera M. F, Silva, Maria N. F, Farias, Izeni P, Hrbek, Tomas

“…Until the recent construction of hydroelectric dams, a series of 18 rapids divided the upper and lower Madeira River, and these rapids were thought to separate…”
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Hematologic profile of Amazon river dolphins Inia geoffrensis and its variation during acute capture stress by Mello, Daniela M D de, da Silva, Vera M F

“…Hematological values are of primary importance when investigating the health and physiological status of populations as they reflect the biological equilibrium…”
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Local habitat use by botos (Amazon river dolphins, Inia geoffrensis) using passive acoustic methods by Yamamoto, Yukiko, Akamatsu, Tomonari, da Silva, Vera M. F., Kohshima, Shiro

“…We monitored the underwater behavior of botos (Inia geoffrensis) using stereo acoustic data loggers to observe their local habitat use and its diel changes at…”
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Attitudes and behaviors toward Amazon River dolphins (Inia geoffrensis) in a sustainable use protected area by Mintzer, Vanessa J, Schmink, Marianne, Lorenzen, Kai, Frazer, Thomas K, Martin, Anthony R, da Silva, Vera M. F

“…Negative interactions between fishers and the Amazon River dolphin (Inia geoffrensis), or boto, have increased substantially in the last few decades. Herein,…”
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Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins by Cunha, Haydée A, Moraes, Lucas C, Medeiros, Bruna V, Lailson-Brito, Jr, José, da Silva, Vera M F, Solé-Cava, Antonio M, Schrago, Carlos G

“…Molecular data have provided many insights into cetacean evolution but some unsettled issues still remain. We estimated the topology and timing of cetacean…”
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Looking to the past and the future: were the Madeira River rapids a geographical barrier to the boto (Cetacea: Iniidae)? by Gravena, Waleska, Farias, Izeni P, da Silva, Maria N. F, da Silva, Vera M. F, Hrbek, Tomas

“…In the present study we tested if a series of 18 rapids on the upper Madeira River form an effective barrier to gene flow, and in particular if they delimit…”
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Seasonal movements of river dolphins (Inia geoffrensis) in a protected Amazonian floodplain by Mintzer, Vanessa J., Lorenzen, Kai, Frazer, Thomas K., da Silva, Vera M. F., Martin, Anthony R.

“…Deliberate killing for use as bait in a regional catfish (Calophysus macropterus) fishery is the primary threat affecting the survival of the Amazon river…”
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Mark-recapture abundance estimate of tucuxi dolphins (Sotalia fluviatilis) in a lake system of the Central Amazon by Coimbra, Zulmira H., Assis, Carlos A., da Silva, Vera M. F., dos Santos, Manuel E.

“…The tucuxi (Sotalia fluviatilis) is a small dolphin endemic to the Amazon River basin. Because the abundance and trends are currently unknown for the species,…”
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Molecular cytogenetic characterization of the Amazon River dolphin Inia geoffrensis by Bonifácio, Heidi L, da Silva, Vera M. F, Martin, Anthony R, Feldberg, Eliana

“…Classical and molecular cytogenetic (18S rDNA, telomeric sequence, and LINE-1 retrotransposon probes) studies were carried out to contribute to an…”
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Virulence factors of Gram-negative bacteria from free-ranging Amazon river dolphins (Inia geoffrensis) by Rocha, Marcos Fábio Gadelha, Diógenes, Expedito Maia, Carvalho, Vitor Luz, Marmontel, Miriam, da Costa, Marcelo Oliveira, da Silva, Vera M. F., de Souza Amaral, Rodrigo, Gravena, Waleska, do Carmo, Nívia A. S., Marigo, Juliana, Ocadaque, Crister José, Freitas, Alyne Soares, Pinheiro, Rodrigo Machado, de Lima-Neto, Reginaldo Gonçalves, de Aguiar Cordeiro, Rossana, de Aquino Pereira-Neto, Waldemiro, de Melo Guedes, Glaucia Morgana, Sidrim, José Júlio Costa, de Souza Collares Maia Castelo-Branco, Débora

“…Freshwater cetaceans play a significant role as sentinel animals, providing important data on animal species and aquatic ecosystem health. They also may serve…”
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FIRST ATTEMPT TO MONITOR LUTEINIZING HORMONE AND REPRODUCTIVE STEROIDS IN URINE SAMPLES OF THE AMAZONIAN MANATEE (TRICHECHUS INUNGUIS) by Amaral, Rodrigo S, Rosas, Fernando C. W, Graham, Laura H, da Silva, Vera M. F, Oliveira, Claudio A

“…The aims of this study were to validate an enzyme immunoassay (EIA) for the measurement of luteinizing hormone (LH) in urine samples of Amazonian manatees…”
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Occurrence of Antibodies to Toxoplasma gondii and Lepstospira spp. in Manatees (Trichechus inunguis) of the Brazilian Amazon by Mathews, Patrick D, da Silva, Vera M. F, Rosas, Fernando C. W, Neto, José A. d'Affonseca, Lazzarini, Stella M, Ribeiro, Daniella C, Dubey, Jitender P, Vasconcellos, Silvio A, Gennari, Solange M

“…The presence of Toxoplasma gondii and Leptospira spp. antibodies was investigated in 74 manatees (Trichechus inunguis [Mammalia: Sirenia]) kept in captivity in…”
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Reference values for serum chemistry of wild Amazon river dolphins (Inia geoffrensis) from the central Amazon by Mello, Daniela M. D., Melo, Fabiana A., Silva, Vera M. F.

“…Blood values of wild cetacean population are a valuable tool to drive proper management of threatened species. Reference intervals of 26 serum analytes were…”
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Effect of illegal harvest on apparent survival of Amazon River dolphins (Inia geoffrensis) by Mintzer, Vanessa J., Martin, Anthony R., da Silva, Vera M.F., Barbour, Andrew B., Lorenzen, Kai, Frazer, Thomas K.

“…► We estimated apparent survival for a population of Inia geoffrensis. ► This population is illegally harvested for use as bait for Calophysus macropterus. ►…”
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Acoustic characteristics of biosonar sounds of free-ranging botos (Inia geoffrensis) and tucuxis (Sotalia fluviatilis) in the Negro River, Amazon, Brazil by Yamamoto, Yukiko, Akamatsu, Tomonari, da Silva, Vera M F, Yoshida, Yayoi, Kohshima, Shiro

“…Odontoceti emit broadband high-frequency clicks on echolocation for orientation or prey detection. In the Amazon Basin, two odontoceti species, boto (Amazon…”
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Placentation in dolphins from the Amazon River Basin: the Boto, Inia geoffrensis, and the Tucuxi, Sotalia fluviatilis by da Silva, Vera M F, Carter, Anthony M, Ambrosio, Carlos E, Carvalho, Ana F, Bonatelli, Marina, Lima, Marcelo C, Miglino, Maria Angelica

“…A recent reassessment of the phylogenetic affinities of cetaceans makes it timely to compare their placentation with that of the artiodactyls. We studied the…”
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Seasonal variation in urinary and salivary reproductive hormone levels in Amazonian manatees (Trichechus inunguis) by Amaral, Rodrigo S, Rosas, Fernando C W, da Silva, Vera M F, Graham, Laura H, Viau, Priscila, Nichi, Marcilio, Oliveira, Claudio A

“…The Amazonian manatee (Trichechus inunguis) is a threatened aquatic mammal endemic to the Amazon basin. The aim of this study was to evaluate the urinary and…”
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Morphology, morphometry and ultrastructure of the Amazonian manatee (Sirenia: Trichechidae) spermatozoa by Amaral, Rodrigo S.(Universidade de São Paulo Faculdade de Medicina Veterinária e Zootecnia Departamento de Reprodução Animal), Lucci, Carolina M.(Universidade de Brasília Faculdade de Agronomia e Medicina Veterinária), Rosas, Fernando C. W.(Instituto Nacional de Pesquisas da Amazônia Laboratório de Mamíferos Aquáticos), Silva, Vera M. F. da(Instituto Nacional de Pesquisas da Amazônia Laboratório de Mamíferos Aquáticos), Báo, Sônia N.(Universidade de Brasília Instituto de Ciências Biológicas Laboratório de Microscopia Eletrônica)

“…This study describes the morphological, morphometric and ultrastructural characteristics of the Amazonian manatee Trichechus inunguis (Natterer, 1883)…”
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Osteological alterations in the tucuxi Sotalia fluviatilis (cetacea, delphinidae) by Fettuccia, Daniela de C., Silva, Vera M. F. da, Simões-Lopes, Paulo C.

“…We present a description of osteological alterations observed in the tucuxi, Sotalia fluviatilis (Gervais, 1853) from a sample of 43 specimens. Fractures were…”
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