Marine Cetaceans
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Stranded humpback whale (Megaptera novaeangliae) (Cetacea: Balaenopteridae) in Paraná River Delta, Buenos Aires Province, Argentina. Comments on the occurrence of marine mammals in the La Plata River Basin
Abstract The humpback whale (Megaptera novaeangliae) is distributed among most oceans and seas of the globe (except Mediterranean Sea). These whales migrate from feeding regions in the Antarctic waters to breeding areas in tropical and subtropical seas. Here we report the stranding of a female young humpback whale, which was founded dead in the vicinity of t
Pap. Avulsos Zool.. Publicado em: 19/03/2018
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2. Cetaceans using the marine protected area of "Parque Estadual Marinho da Laje de Santos", Southeastern Brazil
Resumo O objetivo deste estudo foi avaliar a presença de cetáceos em águas costeiras nas proximidades da Unidade de Conservação (UC) marinha do Parque Estadual Marinho da Laje de Santos (PEMLS), localizado no sudeste do Brasil. Cruzeiros oceanográficos foram conduzidos entre junho de 2013 e junho de 2015 seguindo um transecto pré-definido para cobrir
Braz. j. oceanogr.. Publicado em: 2017-12
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3. Acumulação de compostos organoclorados (PCBs, DDTs e HCB) em tecido hepático de delfinídeos (Cetacea, Mammalia) do Estado do Rio de Janeiro / Organochlorine compounds accumulation (PCBs, DDTs and HCB) in hepatic tissue of delphinids (Cetacea, Mammalia) from Rio de Janeiro State
Over the past decades the research on marine organisms contamination by organochlorine compounds (OCs) has been intensified, allied to the utilization of some species as sentinels of the environmental quality related to organic pollutants. Among these species, cetaceans stand out as animals that, between other characteristics, have great longevity, high lipi
Publicado em: 2011
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4. The sero-prevalence of Toxoplasma gondii in British marine mammals
Serum samples from 101 stranded or bycatch cetaceans from British waters were screened for Toxoplasma gondii-specific antibodies using the Sabin Feldman Dye Test. Relatively high seropositivity was recorded in short-beaked Delphinus delphis and this study presents the first documented case of Toxoplasma in a humpback whale Megaptera novaeangliae.
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-03
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5. INFLUENCE OF ECOLOGICAL AND BIOLOGICAL PARAMETERS ON THE ACCUMULATION OF ESSENTIAL (SE, AS, CU) AND NON-ESSENTIAL ELEMENTS (HG, CD, AG, PB) BY THE LIVER AND KIDNEY OF CETACEANS FROM THE WESTERN SOUTH ATLANTIC OCEAN / INFLUÊNCIA DE PARÂMETROS ECOLÓGICOS E BIOLÓGICOS NA ACUMULAÇÃO DE ELEMENTOS ESSENCIAIS (SE, AS, CU) E NÃO-ESSENCIAIS (HG, CD, AG, PB) EM FÍGADO E RINS DE CETÁCEOS DA PORÇÃO OESTE DO OCEANO ATLÂNTICO SUL
Neste estudo, avaliou-se a influência de alguns parâmetros ecológicos e biológicos sobre a acumulação dos elementos- traço e mercúrio orgânico (HgOrg)no fígado e rins de espécies de cetáceos de hábitos costeiros (Pontoporia blainvillei, N = 31; Sotalia guianensis, N = 21) e oceânicos (Stenella coeruleoalba, N = 3; Stenella frontalis, N = 4), ac
Publicado em: 2008
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6. Conhecimento tradicional e etnoconservação de cetáceos em comunidades caiçaras do município de Cananéia, litoral sul de São Paulo / Tradicional Knowledge and etnoconservation of cetaceans in caiçaras communities of Cananéia city, São Paulo's south coast
Ao longo dos tempos, os cetáceos têm estado metaforicamente próximos à espécie humana o que tem revelado uma inter-relação ambígua, uma vez que podem evocar imagens de inteligência e mistério ao mesmo tempo em que servem como fonte de subsistência e de exploração econômica. Sem dúvida alguma, a relação positiva entre homens e cetáceos ating
Publicado em: 2007
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7. 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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8. 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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9. 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
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10. Helicobacter cetorum sp. nov., a Urease-Positive Helicobacter Species Isolated from Dolphins and Whales
A novel helicobacter with the proposed name Helicobacter cetorum, sp. nov. (type strain MIT 99-5656; GenBank accession number AF 292378), was cultured from the main stomach of two wild, stranded Atlantic white-sided dolphins (Lagenorhynchus acutus) and from the feces of three captive cetaceans (a Pacific white-sided dolphin [Lagenorhynchus obliquidens]; an A
American Society for Microbiology.
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11. A new Eocene archaeocete (Mammalia, Cetacea) from India and the time of origin of whales
Himalayacetus subathuensis is a new pakicetid archaeocete from the Subathu Formation of northern India. The type dentary has a small mandibular canal indicating a lack of auditory specializations seen in more advanced cetaceans, and it has Pakicetus-like molar teeth suggesting that it fed on fish. Himalayacetus is significant because it is the oldest archaeo
The National Academy of Sciences.
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12. Live birth in Cretaceous marine lizards (mosasauroids).
Although live-bearing (viviparity) has evolved around 100 times within reptiles, evidence of it is almost never preserved in the fossil record. Here, we report viviparity in mosasauroids, a group of Cretaceous marine lizards. This is the only known fossil record of live-bearing in squamates (lizards and snakes), and might represent the oldest occurrence of t