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| Registros recuperados: 14 | |
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| González-Sansón, G.; López, N.; Pérez-Cao, H.; Blanco, M.; Lio, V.. |
| Entre junio del 2002 y agosto del 2003 se evaluó la abundancia y distribución de delfines toninas (Tursiops truncatus) en la costa norte de la provincia de Matanzas. Fue empleada la técnica de muestreo a distancia durante seis salidas, en las cuales se recorrieron 1 553,3 Km en 164 horas de esfuerzo. Se analizaron las diferencias en abundancia de delfines por zonas (Costa Norte, Bahía de Cárdenas, Cinco Leguas), estaciones y horario del día y su relación con la temperatura del agua y el estado de la marea. Se observaron 253 delfines en 34 avistamientos. El tamaño de grupo más frecuente fue de ocho individuos. El mayor número de avistamientos realizados ocurrió en la en la parte norte del área de estudio. No se detectaron diferencias estadísticas en la... |
| Tipo: Journal Contribution |
Palavras-chave: 1371; Abundance; Distribution; Tursiops truncatus; Distribution. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4118 |
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| Spitz, Jérôme; Rousseau, Yann; Ridoux, Vincent. |
| In aquatic ecosystems, competitive interactions are occasionally described. Violent attacks on harbour porpoises by bottlenose dolphins were reported and it was proposed that this behavior could result from competitive interactions for food. This hypothesis implies that the two predators should share all or part of they prey range. In this work, we describe the diets of each predator in the Bay of Biscay and adjacent areas from stomach content analysis of stranded animals. The diet of the harbour porpoise was mostly composed of small schooling fish living close to the seafloor (98 percent by mass). The diet of the bottlenose dolphin was characterised by the presence of large specimens of demersal fish (91 percent by mass) and cephalopods. Several prey... |
| Tipo: Text |
Palavras-chave: North Eastern Atlantic; Tursiops truncatus; Phocoena phocoena; Diet; Top predator; Interference competition. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1986.pdf |
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| Díaz,Adriana; Carro,Sandra; Santiago,Livia; Estévez,Juan; Guevara,Celia; Blanco,Miriam; Sánchez,Laima; Sánchez,Liena; López,Nirka; Cruz,Danilo; López,Ronar; Cuetara,Elizabeth B.; Fuentes,Jorge Luis. |
| The analysis of DNA damage by mean of Comet or single cell gel electrophoresis (SCGE) assay has been commonly used to assess genotoxic impact in aquatic animals being able to detect exposure to low concentrations of contaminants in a wide range of species. The aims of this work were 1) to evaluate the usefulness of the Comet to detect DNA strand breakage in dolphin leukocytes, 2) to use the DNA diffusion assay to determine the amount of DNA strand breakage associated with apoptosis or necrosis, and 3) to determine the proportion of DNA strand breakage that was unrelated to apoptosis and necrosis. Significant intra-individual variation was observed in all of the estimates of DNA damage. DNA strand breakage was overestimated because a considerable amount... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Comet assay; DNA diffusion assay; DNA strand breakage; Tursiops truncatus. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200025 |
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| Cruz,D; Barrera,M. |
| Entre las enfermedades virales de más reciente diagnóstico que afectan los delfines Tursiops truncatus se describe la Papilomatosis, una entidad tumoral generalmente benigna que afecta piel y mucosas de diferentes zonas del cuerpo, tanto de animales acuáticos como terrestres incluido el hombre. Con el objetivo de determinar la frecuencia de presentación de las lesiones en genitales externos de delfines Tursiops truncatus en zonas de la cayería norte central de Cuba, se estudiaron 263 delfines en el período comprendido entre los años 2000 y 2010. Mediante la identificación clínica de lesiones verrucosas compatibles con Papilomatosis en genitales externos, se pudo determinar que el 30% de animales presentaron lesiones típicas de la enfermedad. La frecuencia... |
| Tipo: Journal article |
Palavras-chave: Papilomatosis; Tursiops truncatus; Verrugas genitales. |
| Ano: 2011 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2011000300008 |
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| Lahaye, Virginie; Bustamante, Paco; Dabin, W; Van Canneyt, O; Dhermain, F; Cesarini, C; Pierce, G; Caurant, Florence. |
| This study aimed at comparing toxic element (Hg, Cd) bioaccumulation in relation to age for bottlenose (Tursiops truncatus) and striped dolphins (Stenella coeruleoalba) from Mediterranean and Atlantic waters. Metal concentrations were also measured in selected prey to infer metal exposure through the diet. As expected, Mediterranean prey exhibited the highest Hg levels, probably as a consequence of the Hg enrichment of the Mediterranean Sea. Comparing the predators from each area and taking age into account, Mediterranean bottlenose dolphins displayed higher Hg levels than Atlantic dolphins (p = 0.032), whereas Mediterranean striped dolphins did not (p = 0.691). The consumption of Myctophid fish, which showed the highest Hg levels (105 +/- 80 ng g(-1)... |
| Tipo: Text |
Palavras-chave: Exposure; Diet; Cadmium; Mercury; Tursiops truncatus; Stenella coeruleoalba. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-4713.pdf |
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| Santos,Mauricio L.; Lemos,Valéria M.; Vieira,João P.. |
| ABSTRACT We report on the interaction between common bottlenose dolphins, Tursiops truncatus (Montagu, 1821) and cast net fishermen in southern coast of Brazil. The fishery was monitored in the mouth of the Tramandaí River Estuary to investigate the seasonality of catches and their relationships with a set of variables: presence/absence and number of bottlenose dolphins, fishing area, temperature, salinity, wind and water flow direction in the channel. The mullet, Mugil liza Valenciennes, 1836 is the target species and was the dominant fish in the catches (77% of total catch; 50% in frequency; 0.2 ind. x f-1). The use of GLM models helped to reveal that the number of the bottlenose dolphins, time of year (months) and spatial variation of fishing activity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fishing activity; Generalized linear models; Mugil liza; Seasonality; Tramandaí River Estuary; Tursiops truncatus. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100340 |
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| Wedekin,Leonardo Liberali; Daura-Jorge,Fábio Gonçalves; Rossi-Santos,Marcos Roberto; Simões-Lopes,Paulo César. |
| A ecologia do golfinho-nariz-de-garrafa (Tursiops truncatus) é pouco documentada no Brasil. O objetivo deste trabalho é fornecer dados sobre a distribuição, tamanho de grupo e comportamento de T. truncatus a partir de avistagens oportunistas realizadas nas adjacências da Ilha de Santa Catarina, sul do Brasil. Em cada observação de grupos da espécie foram registrados: localidade, data e hora, tamanho de grupo e comportamento. Foram observados 71 grupos entre 1989 e 2005, em todos os meses do ano. A espécie foi observada em toda região costeira da Ilha de Santa Catarina, utilizando uma grande variedade de hábitats. O tamanho de grupo variou entre 1 e 200 indivíduos, com uma média de aproximadamente 8 indivíduos (moda = 2). Interações com pelo menos três... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Golfinho-nariz-de-garrafa; Tursiops truncatus; Comportamento; Tamanho de grupo; Aves marinhas. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000400023 |
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| Simões-Lopes,Paulo C; Fabian,Marta E. |
| Residence patterns, habitat use, range, and some population estimate of the coastal bottlenose dolphin, Tursiops truncatus (Montagu, 1821), were documented in two coastal sites in southern Brazil: Laguna (Santa Catarina) (28º30'S; 48º55'W), and Imbe/Tramandai (Rio Grande do Sul) (29º58'S; 50º07'W). Regular observations were carried out at the Laguna system for 27 months (August 1989 to December 1991). The dolphins were photo-identified using natural permanent marks. Over 4,500 photograps were taken from shore grounds 6 to 14 meters away. Up to 51 dolphins have used the estuaries of Laguna's canal and Imarui-Santo Antonio's lagoon system in 1991. A stable group of nine animals has inhabited the Imbe/Tramandai area for over 13 years. Both sites were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tursiops truncatus; Bottlenose dolphin; Residence patterns; Site fidelity; Southern Brazil. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400012 |
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| Vianna,Thaís dos S.; Loch,Carolina; Castilho,Pedro V. de; Gaidzinski,Morgana C.; Cremer,Marta J.; Simões-Lopes,Paulo C.. |
| ABSTRACT Marine mammal strandings provide valuable insights into local biodiversity. Strandings can be caused by both natural and anthropogenic factors. In the state of Santa Catarina, Southern Brazil, organized marine mammal collections started in the 1980s through opportunistic and non-systematic collection efforts, representing a record of over 30 years of marine biodiversity. This study aimed to perform a preliminary review of 32 years of stranding records within this region. The secondary aim was to elucidate the stranding dynamics of the three most commonly recorded species. A total of 460 records were obtained, representing 17 species of odontocetes. The species registered most frequently were the franciscana, Pontoporia blainvillei (Gervais &... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bycatch; Marine mammals; Pontoporia blainvillei; Sotalia guianensis; Tursiops truncatus. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000500601 |
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| Registros recuperados: 14 | |
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