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| Registros recuperados: 14 | |
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| Lurton, Xavier; Antoine, Loic. |
| The use of acoustical systems in various human activities in the ocean (industry, defence, science) raises the issue of their impact upon marine mammals populations. Several serious accidents linked to the use of naval sonars led the military, industrial and scientific communities to investigate the potential dangers of their own activity. This report aims at identifying the risks for the cetaceans linked to the use of acoustic and seismic systems currently used for oceanographic science. The analysis proposed here stays within the frame of bibliography synthesis and elementary modelling, and brings no new scientific elements on the topic. An overview of the status of cetacean populations is given first, with a summary of the possible acoustical... |
| Tipo: Text |
Palavras-chave: Seismics; Sonar; Acoustics; Oceanography; Acoustical methods; Auditory threshold; Stranding; Acoustical risks; Marine mammals. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/rapport-2390.pdf |
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| Magalhães,Fagner Augusto de; Garri,Rosana Griselda; Tosi,Carolina Herédia; Siciliano,Salvatore; Chellappa,Sathyabama; Silva,Flavio José de Llima. |
| In Brazil only one confirmed stranding is known from an emaciated specimen collected along the southeastern coast. The aim of this work is to report a recent record of a pygmy killer whale from the coast of Maranhão State, northern Brazil. On 22 October 2005, through regular surveys conducted by Projeto Cetáceos do Maranhão team, a beach-worn skull of a pygmy killer whale was found on the Mangue Seco beach, at Caju Island, Maranhão State. The specimen was identified through peculiar features, such as a short beak, 11 teeth per row in the maxile and the distance between the anterorbital notch and the end of the toothrow. This stranding suggests that pygmy killer whales may use oceanic waters close to Maranhão continental shelf. This is the second confirmed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stranding; Pygmy killer whale; Maranhão State; Brazil. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000200036 |
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| Motta,Monica Regina Alves; Pinheiro,Diana Célia Sousa Nunes; Carvalho,Vitor Luz; Viana,Daniel de Araújo; Vicente,Ana Carolina Paulo; Iñiguez,Alena Mayo. |
| The gastric compartments of ten cetaceans stranded on the coast of Ceará State, Northeast Brazil were analyzed in this study. Gastric Anisakis spp. was diagnosed in all individuals involved in this study. Parasites and tissue samples were collected during necropsy. The presence of Anisakis parasites showed similar distribution across the three gastric compartments and the majority was free within the gastric lumen. Macroscopically, the lesions were predominantly characterized by the presence of ulcers (60%, 6/10) within the gastric mucosa, occasionally associated with edema and hemorrhage (30%, 3/10). Eight cetaceans (8/10 - 80%) presented gastric microscopic alterations and in 75% (6/8) of these animals, chronic lymphoplasmocytic gastritis was observed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anisakis sp; Nematodes; Ulcers; Pathology; Marine mammals; Cetaceans; Stranding. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000200010 |
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| Félix, F.; Haase, B.. |
| Entre los meses de julio y septiembre de 1995 se realizaron 15 viajes a bordo de embarcaciones comerciales turísticas que hacen viajes entre Puerto López y la isla de La Plata para estudiar las ballenas jorobada. Un total de 102 ballenas en 45 grupos fueron observados en este período. Los grupos estuvieron formados por 1 a 5 individuos (X=2.26, DS=0.95). En 16 grupos se pudo establecer su composición por clases: 8 estuvieron compuestos solo por adultos (X=2.25, DS=0.82), 4 por adultos y subadultos (X=2.75, DS=0.82), 3 grupos por adultos y crías (2.33, DS= 0.47) y 1 por un subadulto solo. La tasa cruda de nacimientos fue de 0.029. Treinta y un individuos fueron identificados por el patrón de coloración en la parte ventral de la cola, aumentando así a 72 el... |
| Tipo: Journal Contribution |
Palavras-chave: Marine mammals; Population number; Stranding; Age groups; Age groups; Http://aims.fao.org/aos/agrovoc/c_28628. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/2287 |
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| Degrati,Mariana; García,Néstor A.; Grandi,M. Florencia; Leonardi,M. Soledad; Loizaga de Castro,Rocío; Vales,Damián G.; Dans,Silvana L.; Pedraza,Susana N.; Crespo,Enrique A.. |
| We present a new record of sperm whale with notes on diet, age determination and a review of strandings along the continental Argentine coast. A complete necropsy was made in the field, and morphometric data were taken. The specimen stranded was a mature male of 64+ years old. This is the oldest specimen determined for a sperm whale in the Southwest Atlantic coast. In the stomach contents a total of 302 cephalopod lower beaks were recovered. Cestodes were present in the blubber but parasites were not found in stomach and intestine contents. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Age determination; Continental Argentine coast; Sperm whale; Stranding. |
| Ano: 2011 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832011000200013 |
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| Jacques, T.. |
| Whale strandings convey a great deal of information on the complex factors that affect the survival of cetacean species. International law protects cetaceans, and governments have committed themselves to conserve populations, to support research and to organise the scientific response to stranding events. In Belgium, a number of research units, public services and volunteers have been organized into an intervention network to deal with stranded animals. The practical difficulties are many and can only be overcome through good co-ordination, rapid response and full co-operation of experts in various fields. Though much progress has been achieved in the right direction, many problems remain to be solved. As was made obvious with the stranding of four sperm... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Disaster management; Stranding; Whales; Whales. |
| Ano: 1997 |
URL: http://www.vliz.be/imisdocs/publications/303627.pdf |
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| Noël, L.. |
| The stranding of sperm whales at the Belgian coast in November 1994 attracted the general attention of the media. Excessive shows of passion often encountered in other parts of the world when cetaceans die, were not observed. An examination of the articles which appeared in the press shows that the event was merely treated as a major, but common news item. Priority was given to the daily developments. The work of the authorities and that of the scientists were given similar status as the anecdotic aspects. The importance given to controversies regarding the management of the situation must be stressed. The media did not go deeply into the biology of sperm whales, the stranding that occurred abroad, or the various hypotheses that were discussed. How could... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environment; Environment; Media; Stranding. |
| Ano: 1997 |
URL: http://www.vliz.be/imisdocs/publications/303630.pdf |
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| Félix, F.; Haase, B.; Denkinger, J.; Falconí, J.. |
| Se informa sobre 140 casos de varamientos de mamíferos marinos pertenecientes a los Ordenes Cetácea (12 especies) y Carnívora (dos especies) ocurridos en el período 1996-2009 en la costa continental ecuatoriana. Los cetáceos incluyen tres especies de mysticetos (ballenas de barba) y 9 odontocetos (delfines y ballenas dentadas). Las dos especies de carnívoros pertenecen al Suborden Pinnipedia (lobos y leones marinos). Los varamientos fueron registrados en las cinco provincias costeras, aunque con mayor proporción en Santa Elena (65% del total). Las especies con mayor incidencia fueron: ballena jorobada (Megaptera novaeangliae)(27.5%), delfín común (Delphinus delphis)(12.3%), león marino sudamericano (Otaria flavescens)(12.3%), bufeo (Tursiops... |
| Tipo: Journal Contribution |
Palavras-chave: Marine mammals; Aquatic mammals; Stranding. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4229 |
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| Chiluiza, D.; Aguirre, W.; Félix, F.; Haase, B.. |
| Between 1987 and 1995, 93 strandings of marine mammals were recorded along the ecuadorian continental coast, including one mass stranding of 56. The strandings involved 12 species of cetaceans (10 Odontoceti and 2 Mysticeti) and one species of pinniped. The Odontoceti were represented by: bottlenose dolphin Tursiops truncatus (n=30), sperm whale Physeter macrocephalus (n=25), Pacific spotted dolphin Stenella attenuata (n=7), striped dolphin Stenella coeruleoalba (n=2), false killer whale Pseudorca crassidens (n=2), Cuvier's beaked whale Ziphius cavirostris (n=2), short finned pilot whale Globicephala macrorhynchus (n=1), short-beaked common dolphin Delphinus delphis (n=3), Risso's dolphin Grampus griseus (n=1) and pygmy killer whale Feresa attenuata (n=1).... |
| Tipo: Journal Contribution |
Palavras-chave: Marine mammals; Stranding; Coastal zone. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/2264 |
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| Registros recuperados: 14 | |
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