Nouvelles données sur les cétacés des îles Kerguelen / New data on cetaceans of the Kerguelen Islands

Mammalia ◽  
2006 ◽  
Vol 70 (1-2) ◽  
Author(s):  
Daniel Robineau ◽  
Guy Duhamel
Keyword(s):  
Orcinus Orca ◽  
Eubalaena Glacialis ◽  
Physeter Macrocephalus ◽  
Balaenoptera Acutorostrata ◽  
Globicephala Melas ◽  
Ziphius Cavirostris ◽  
Dissostichus Eleginoides ◽  
Cephalorhynchus Commersonii ◽  
Nouvelles Espèces ◽  
Lagenorhynchus Cruciger

RésuméDes observations nouvelles et quelques échouages complètent le premier bilan faunistique établi en 1989 pour les îles Kerguelen. Aux neuf espèces identifiées précédemment ( Eubalaena glacialis , Balaenoptera acutorostrata , Megaptera novaeangliae , Physeter macrocephalus , Mesoplodon layardii , Cephalorhynchus commersonii , Lagenorhynchus cruciger , Orcinus orca , et Globicephala melas ) s'ajoutent, grâce à des échouages, deux nouvelles espèces: Ziphius cavirostris et Hyperoodon planifrons . En outre, la présence occasionnelle de Phocoena dioptrica est confirmée. L'événement le plus marquant est cependant le grand nombre d'observations (n=1649) de cachalots ( Physeter macrocephalus ) faites depuis 1989 au delà du plateau des îles, dans une zone peu fréquentée autrefois par les bateaux de pêche. Pour le dauphin de Commerson ( Cephalorhynchus commersonii ), espèce la plus commune, des données biologiques et écologiques s'ajoutent aux données faunistiques. Nous faisons également état, pour trois espèces ( Physeter macrocephalus , Orcinus orca , et Globicephala melas ), d'interactions avec la pêcherie à la palangre de la légine australe ( Dissostichus eleginoides ).

Nouvelles données sur les cétacés des îles Kerguelen / New data on cetaceans of the Kerguelen Islands

Mammalia ◽  
2006 ◽  
Vol 70 (1-2) ◽  
Author(s):  
Daniel Robineau ◽  
Guy Duhamel
Keyword(s):  
Orcinus Orca ◽  
Eubalaena Glacialis ◽  
Physeter Macrocephalus ◽  
Balaenoptera Acutorostrata ◽  
Globicephala Melas ◽  
Ziphius Cavirostris ◽  
Dissostichus Eleginoides ◽  
Cephalorhynchus Commersonii ◽  
Nouvelles Espèces ◽  
Lagenorhynchus Cruciger

RésuméDes observations nouvelles et quelques échouages complètent le premier bilan faunistique établi en 1989 pour les îles Kerguelen. Aux neuf espèces identifiées précédemment ( Eubalaena glacialis , Balaenoptera acutorostrata , Megaptera novaeangliae , Physeter macrocephalus , Mesoplodon layardii , Cephalorhynchus commersonii , Lagenorhynchus cruciger , Orcinus orca , et Globicephala melas ) s'ajoutent, grâce à des échouages, deux nouvelles espèces: Ziphius cavirostris et Hyperoodon planifrons . En outre, la présence occasionnelle de Phocoena dioptrica est confirmée. L'événement le plus marquant est cependant le grand nombre d'observations (n=1649) de cachalots ( Physeter macrocephalus ) faites depuis 1989 au delà du plateau des îles, dans une zone peu fréquentée autrefois par les bateaux de pêche. Pour le dauphin de Commerson ( Cephalorhynchus commersonii ), espèce la plus commune, des données biologiques et écologiques s'ajoutent aux données faunistiques. Nous faisons également état, pour trois espèces ( Physeter macrocephalus , Orcinus orca , et Globicephala melas ), d'interactions avec la pêcherie à la palangre de la légine australe ( Dissostichus eleginoides ).

scholarly journals Cetacean records from Tristan da Cunha, South Atlantic

2009 ◽  
Vol 89 (5) ◽  
pp. 1023-1032 ◽  
Author(s):  
Peter B. Best ◽  
James P. Glass ◽  
Peter G. Ryan ◽  
Merel L. Dalebout
Keyword(s):  
Megaptera Novaeangliae ◽  
Orcinus Orca ◽  
Physeter Macrocephalus ◽  
Balaenoptera Physalus ◽  
Globicephala Melas ◽  
Lagenorhynchus Obscurus ◽  
Catch Data ◽  
Tristan Da Cunha ◽  
Eubalaena Australis ◽  
Southern Right Whales

The cetacean fauna at the Tristan da Cunha archipelago has been assessed from ship-based, aerial and land-based observations from 1983–2000, from strandings on Tristan da Cunha and Inaccessible Island between 1983 and 1995, and from whaling catch data from 1934–1967. Five species (Eubalaena australis, Megaptera novaeangliae, Tasmacetus shepherdi, Globicephala melas and Orcinus orca) have been sighted within the territorial waters of the archipelago, eight species (Balaenoptera physalus, B. borealis, B. acutorostrata/bonaerensis, Physeter macrocephalus, Mesoplodon mirus, M. bowdoini, Delphinus sp. and Lissodelphis peronii) have been seen or taken within 200 nautical miles (360 km) of the group or have been found stranded on its shores, while another two species (Caperea marginata and Lagenorhynchus obscurus) have been recorded close enough to be considered likely to occur within 200 nautical miles. The records of Mesoplodon mirus and M. bowdoini represent significant extensions to their known distribution. Apart from its possible importance as a mid-oceanic nursery area for southern right whales, the waters of the Tristan Archipelago seem to be a concentration area for T. shepherdi, one of the least-known of the world's cetaceans.

scholarly journals Cetaceans registered on the coast of Ilhéus (Bahia), northeastern Brazil

2012 ◽  
Vol 12 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Renata Lúcia Guedes Batista ◽  
Alexandre Schiavetti ◽  
Urânia Amaral dos Santos ◽  
Maria do Socorro Santos dos Reis
Keyword(s):  
Municipal Government ◽  
Northeastern Brazil ◽  
Orcinus Orca ◽  
Physeter Macrocephalus ◽  
Downtown Area ◽  
Sotalia Guianensis ◽  
Fire Stations ◽  
Scientific Value ◽  
The City ◽  
Environmental Agency

Stranded cetaceans have scientific value and may confirm the occurrence of some species or indicate their geographical distribution in an area. The collection of biological material can also contribute to improve the knowledge of the species or populations inhabiting certain areas. This study aimed to record live or dead cetaceans found ashore along the coast of Ilhéus, Bahia State, northeastern Brazil. Data were collected through a campaign called "SOS strandings, whales, porpoises and dolphins." Between 1997 and 1999 three hundred posters and five hundred folders were distributed to beach huts, shops, fishing associations and settlements, the city's municipal government, the Brazilian Environmental Agency (IBAMA) and fire stations. During this campaign, which lasted until 2007 it was possible to record 38 cetaceans of ten species on the coast of Ilhéus: Physeter macrocephalus, Megaptera novaeangliae, Globicephala macrorhynchus, Orcinus orca, Peponocephala electra, Stenella clymene, Feresa attenuata, Ziphius cavirostris, Steno bredanensis and Sotalia guianensis. The greatest numbers of records were observed between 2000 and 2003, which was the period after the distribution of banners and posters. The majority of the carcasses were recovered near the city downtown area (<10 km) and there was not a relationship between the state of the carcasses and the distance from that area.

RECORDS OF CYAMUS BALAENOPTERAE BARNARD AND NEOCYAMUS PHYSETERIS (POUCHET), TWO SPECIES OF WHALE-LICE (AMPHIPODA), FROM THE NORTHEAST PACIFIC

1959 ◽  
Vol 37 (6) ◽  
pp. 895-897 ◽  
Author(s):  
L. Margolis
Keyword(s):  
Pacific Ocean ◽  
First Record ◽  
Physeter Macrocephalus ◽  
Balaenoptera Acutorostrata ◽  
Northeast Pacific ◽  
The Pacific ◽  
The Pacific Ocean ◽  
First Time

Cyamus balaenopterae Barnard from Balaenoptera acutorostrata and Neocyamus physeteris (Pouchet) from Physeter macrocephalus are reported for the first time from the Pacific Ocean. This is the first record of a cyamid from B. acutorostrata.

Marking of Small Cetaceans Using "Discovery" Type Whale Marks

1975 ◽  
Vol 32 (7) ◽  
pp. 1237-1240 ◽  
Author(s):  
S. G. Brown
Keyword(s):  
Minke Whale ◽  
Orcinus Orca ◽  
Killer Whales ◽  
Balaenoptera Acutorostrata ◽  
Lagenorhynchus Obscurus ◽  
Minke Whales ◽  
Beaked Whales ◽  
Pilot Whales ◽  
Dusky Dolphin

All smaller cetaceans known to have been successfully marked with "Discovery" type marks are summarized. These include 67 minke whales (Balaenoptera acutorostrata), 33 killer whales (Orcinus orca), 30 pilot whales (Globicephala sp.), 7 bottlenose whales (Hyperoodon sp.), 5 other "beaked whales," and 1 dusky dolphin (Lagenorhynchus obscurus). Recoveries include 3 minke, 1 bottlenose, and 1 killer. Minke whale marks were recovered up to 4 yr 2 mo after marking.

Killer whales (Orcinus orca) in Angolan and Gulf of Guinea waters, tropical West Africa

2010 ◽  
Vol 90 (8) ◽  
pp. 1601-1611 ◽  
Author(s):  
Caroline R Weir ◽  
Tim Collins ◽  
Inês Carvalho ◽  
Howard C. Rosenbaum
Keyword(s):  
Group Size ◽  
Orcinus Orca ◽  
Humpback Whales ◽  
Physeter Macrocephalus ◽  
Sperm Whales ◽  
Killer Whales ◽  
External Appearance ◽  
Tropical Waters ◽  
Photo Identification ◽  
Mola Mola

Killer whales Orcinus orca are considered to be relatively uncommon in tropical waters. Few sightings have been reported from the west coast of Africa due to a paucity of survey coverage. We present data on 32 killer sightings from tropical waters off Angola (N = 18), Gabon (N = 7), São Tomé (N = 6) and Cameroon (N = 1), comprising a combination of dedicated survey sightings (N = 21) and reliable anecdotal records (n = 11). Killer whales were reported from coastal waters, the shelf edge and deep, oceanic areas. Sightings indicate a probable year-round occurrence of killer whales within the region. Mean group size was 5.6 animals. There was no difference in group size between sightings in waters >200 m deep and those on the continental shelf. No photo-identification matches were found between Angola, Gabon and São Tomé. Re-sightings of two individuals occurred annually in São Tomé during 2002–2004. Killer whales had external appearance consistent with the Type A nominate species form. Antagonistic encounters were recorded between killer whales and humpback whales Megaptera novaeangliae off Angola, Gabon and Cameroon, and with sperm whales Physeter macrocephalus off Angola. Predation on ocean sunfish Mola mola was recorded in São Tomé, and possible predation on sharks was recorded twice in Gabon.

scholarly journals Experimental fishing with an “umbrella-and-stones” system to reduce interactions of sperm whales (Physeter macrocephalus) and seabirds with bottom-set longlines for Patagonian toothfish (Dissostichus eleginoides) in the Southwest Atlantic

2010 ◽  
Vol 68 (1) ◽  
pp. 228-238 ◽  
Author(s):  
Sabine Goetz ◽  
Martín Laporta ◽  
Julio Martínez Portela ◽  
M. Begoña Santos ◽  
Graham J. Pierce
Keyword(s):  
Environmental Variables ◽  
Economic Loss ◽  
Physeter Macrocephalus ◽  
Sperm Whales ◽  
Southwest Atlantic ◽  
Fishing Vessels ◽  
Visual Evidence ◽  
Patagonian Toothfish ◽  
Dissostichus Eleginoides ◽  
Modelling Data

Abstract Goetz, S., Laporta, M., Martínez Portela, J., Santos, M. B., and Pierce, G. J. 2011. Experimental fishing with an “umbrella-and-stones” system to reduce interactions of sperm whales (Physeter macrocephalus) and seabirds with bottom-set longlines for Patagonian toothfish (Dissostichus eleginoides) in the Southwest Atlantic. – ICES Journal of Marine Science, 68: 228–238. Depredation, i.e. the damage or removal, of Patagonian toothfish (Dissostichus eleginoides) from longlines by sperm whales (Physeter macrocephalus) can cause considerable economic loss for Spanish fishing vessels in the Southwest Atlantic. The fishery also suffers high bycatch rates of seabirds. The main goal of the study was to assess the extent of depredation and seabird bycatch and to test the potential of the so-called “umbrella” system, coupled with attached stones for faster sinking, for minimizing both. Moreover, we investigated the relationships between sightings of sperm whales, depredation, catches, and environmental variables using generalized additive modelling. Data were collected during 297 hauls on a longliner in 2007/2008 in international waters of the Southwest Atlantic. Sperm whales were sighted during 35% of the hauls, always during gear retrieval, and their presence was positively related to fish damage. The overall depredation rate (0.44% of the total catch) was low, but is assumed to be underestimated because sperm whales were suspected of also taking fish without leaving visual evidence. The “umbrella-and-stones” system was highly effective in preventing bycatch and appeared to restrict depredation, but significantly reduced the catches. The results demonstrate that there is still some way to go to solve the problem of depredation.

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