Marine Tucuxi
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Marine tucuxi dolphin (Sotalia guianensis) injuries as a possible indicator of fisheries interaction in southeastern Brazil
Brazilian Journal of Oceanography. Publicado em: 2008-12
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2. Molecular sexing of tucuxi dolphins (Sotalia guianensis and Sotalia fluviatilis) using samples from biopsy darting and decomposed carcasses
We tested the zinc-finger sex chromosome-linked genes Zfx/Zfy and the sex-determining region Y (Sry) genes for gender determination of biopsy samples from marine and riverine tucuxi dolphins (Sotalia guianensis and S. fluviatilis). We also evaluated the performance of these genes with decomposed carcasses, for which sexing cannot rely on the direct examinati
Genetics and Molecular Biology. Publicado em: 2007
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3. Helminths of the marine tucuxi, Sotalia fluviatilis (Gervais, 1853) (Cetacea: Delphinidae), in northern Rio de Janeiro State, Brazil
Os objetivos deste trabalho foram reportar os helmintos parasitas do tucuxi marinho, Sotalia fluviatilis, na costa norte do Estado do Rio de Janeiro; e checar se a taxa de infestação varia com as características do hospedeiro (sexo e maturidade) e estações do ano. Entre 1989 e 2002, 80 tucuxis marinhos capturados acidentalmente em pescarias foram examin
Brazilian Archives of Biology and Technology. Publicado em: 2006-01
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4. Comportamento de mergulho do boto-cinza, Sotalia guianensis, na enseada do Curral, Praia de Pipa-RN, Brasil :possíveis adaptações cardíacas ao mergulho
The marine tucuxi, Sotalia guianensis, is one of the smallest known cetaceans, has coastal habits, and occurs from Hondures to Santa Catarina, in southern Brazil. The objective of this dissertation was to describe diving behavior of the marine tucuxi in three age classes and to analyze the cardiac capacity to dive through the examination of hearts of strande
Publicado em: 2006
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5. Cuidado ao filhote de boto cinza, Sotalia guianensis (van Benédén, 1864)
Em algumas espécies o cuidado ao filhote é primordial para sua sobrevivência. Muitos estudos foram e são realizados relacionando diferentes comportamentos apresentados pelos cetáceos no cuidado dos filhotes. Para a espécie Sotalia guianensis, alguns comportamentos já foram estudados e associados ao cuidado. Entretanto, muitos aspectos ainda são desco
Publicado em: 2006
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6. AvaliaÃÃo do impacto causado por embarcaÃÃes de turismo no comportamento do boto-cinza (Sotalia fluviatilis) na BaÃa dos Golfinhos, Tibau do Sul, RN, Brasil
Marine ecotourism has experienced a worldwide growth in recent years, bringing concern about its impact on the environment. Although the marine tucuxi (Sotalia fluviatilis) is considered to be a threatened species, there have been no studies conducted on their response to tourism vessels. Data were collected in Dolphin Bay, from October 2001 to February 2002
Publicado em: 2004
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7. Sotalia fluviatilis (Gervais, 1853) sound emissions characterization e during feeding behaviour in two beaches in Cananéia estuary, São Paulo. / Caracterização das emissões sonoras de Sotalia fluviatilis (Gervais, 1853) (Cetacea, Delphinidae) durante o comportamento alimentar em duas praias do estuário de Cananéia, São Paulo.
This study had two objectives: to describe the sound emissions of Sotalia fluviatilis and to classify the analyzed whistles. During August and December, 2002, whistle emissions were recorded from solitary individuals and groups of 2 to 10 individuals that, in order to capture preys, approached Pereirinha (Ilha do Cardoso) and Ponta da Trincheira (Ilha Compri
Publicado em: 2004
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8. Ocorrência de compostos organoclorados (pesticidas e PCBs) em mamíferos marinhos da costa de São Paulo (Brasil) e da Ilha Rei George (Antártica). / Occurrence of organochlorine compounds (pesticides and PCBs) in marine mammals from São Paulo coast (Brazil) and King George Island (Antarctica).
Organochlorine compounds cause strong impact on the nature, as a consequence of three basic characteristics: environmental persistence, bioaccumulation, and high toxicity. The marine mammals are one of the most vulnerable organisms to the chronic toxicity of these contaminants. Besides the high concentration in the body, the female transfers part of her load
Publicado em: 2002