Présence saisonnière de l’orque (Orcinus orca: morphotype A) au large de la Nouvelle-Calédonie
Little is known about the population of killer whales Orcinus orca that occurs in the Coral Sea. Only three sightings made during the decade 1991-2000 have been reported in the scientific literature; no stranding has been recorded up to 2006; no killer whale has been sighted during extensive aerial...
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Société Zoologique de France
2022
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ftarchimer:oai:archimer.ifremer.fr:93438 2023-05-15T17:03:24+02:00 Présence saisonnière de l’orque (Orcinus orca: morphotype A) au large de la Nouvelle-Calédonie Seasonal occurrence of the killer whale (Orcinus orca : morphotype A) off New Caledonia Borsa, Philippe 2022 application/pdf https://archimer.ifremer.fr/doc/00822/93438/100181.pdf https://archimer.ifremer.fr/doc/00822/93438/ fre eng fre eng Société Zoologique de France https://archimer.ifremer.fr/doc/00822/93438/100181.pdf https://archimer.ifremer.fr/doc/00822/93438/ info:eu-repo/semantics/openAccess restricted use Bulletin de la Société Zoologique de France (0037-962X) (Société Zoologique de France), 2022 , Vol. 147 , N. 2 , P. 51-56 mer de Corail saisonnalité migration prédation morphotype mammifère marin Coral Sea seasonality predation marine mammal text Publication info:eu-repo/semantics/article 2022 ftarchimer 2023-03-07T23:53:26Z Little is known about the population of killer whales Orcinus orca that occurs in the Coral Sea. Only three sightings made during the decade 1991-2000 have been reported in the scientific literature; no stranding has been recorded up to 2006; no killer whale has been sighted during extensive aerial surveys all around New Caledonia from October to December 2014. However, several images and video records are available from the Internet. The objectives of the present work are to compile observations of killer whales made over the last three decades off New Caledonia in the eastern Coral Sea, to examine the temporal pattern of killer whale occurrence, and to identify their morphotype. Accounts of killer whale sightings were obtained from interviews with yachtsmen and women, from searching the local daily newspapers Nouvelles Calédoniennes, and from searching the Internet. Nine unpublished sightings of killer whales were recorded between 1993 and 2017. Six of these observations were supported by photographs or videographic records, making it possible to characterize individual morphotypes. All sightings but one were outside the barrier reef off the western coast of New Caledonia; one observation was made inside the southern lagoon of New Caledonia in a channel between two passes. The period of killer whale occurrence was from July to December with a peak in August, that is, mostly during the austral winter season, with an extension into the first month of the austral summer. All individuals for which there was sufficient photographic evidence of pigmentation patterns had the following characteristics: supra-ocular white patch elongated and roughly elliptical, with long axis horizontal or quasihorizontal; its length was ~0.85 to ~1.1 times that of the basis of dorsal fin (N = 6) and ~0.22 to ~0.24 times the distance of snout to abscissa of dorsal fin origin (N = 6); long axis was ~2.8 to ~3.8 times the small axis (N = 2); grey saddle patch posterior to dorsal fin moderately large and generally moderately contrasted (N ... Article in Journal/Newspaper Killer Whale Orca Orcinus orca Killer whale Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Austral White Patch ENVELOPE(-55.898,-55.898,49.750,49.750) |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
French English |
topic |
mer de Corail saisonnalité migration prédation morphotype mammifère marin Coral Sea seasonality predation marine mammal |
spellingShingle |
mer de Corail saisonnalité migration prédation morphotype mammifère marin Coral Sea seasonality predation marine mammal Borsa, Philippe Présence saisonnière de l’orque (Orcinus orca: morphotype A) au large de la Nouvelle-Calédonie |
topic_facet |
mer de Corail saisonnalité migration prédation morphotype mammifère marin Coral Sea seasonality predation marine mammal |
description |
Little is known about the population of killer whales Orcinus orca that occurs in the Coral Sea. Only three sightings made during the decade 1991-2000 have been reported in the scientific literature; no stranding has been recorded up to 2006; no killer whale has been sighted during extensive aerial surveys all around New Caledonia from October to December 2014. However, several images and video records are available from the Internet. The objectives of the present work are to compile observations of killer whales made over the last three decades off New Caledonia in the eastern Coral Sea, to examine the temporal pattern of killer whale occurrence, and to identify their morphotype. Accounts of killer whale sightings were obtained from interviews with yachtsmen and women, from searching the local daily newspapers Nouvelles Calédoniennes, and from searching the Internet. Nine unpublished sightings of killer whales were recorded between 1993 and 2017. Six of these observations were supported by photographs or videographic records, making it possible to characterize individual morphotypes. All sightings but one were outside the barrier reef off the western coast of New Caledonia; one observation was made inside the southern lagoon of New Caledonia in a channel between two passes. The period of killer whale occurrence was from July to December with a peak in August, that is, mostly during the austral winter season, with an extension into the first month of the austral summer. All individuals for which there was sufficient photographic evidence of pigmentation patterns had the following characteristics: supra-ocular white patch elongated and roughly elliptical, with long axis horizontal or quasihorizontal; its length was ~0.85 to ~1.1 times that of the basis of dorsal fin (N = 6) and ~0.22 to ~0.24 times the distance of snout to abscissa of dorsal fin origin (N = 6); long axis was ~2.8 to ~3.8 times the small axis (N = 2); grey saddle patch posterior to dorsal fin moderately large and generally moderately contrasted (N ... |
format |
Article in Journal/Newspaper |
author |
Borsa, Philippe |
author_facet |
Borsa, Philippe |
author_sort |
Borsa, Philippe |
title |
Présence saisonnière de l’orque (Orcinus orca: morphotype A) au large de la Nouvelle-Calédonie |
title_short |
Présence saisonnière de l’orque (Orcinus orca: morphotype A) au large de la Nouvelle-Calédonie |
title_full |
Présence saisonnière de l’orque (Orcinus orca: morphotype A) au large de la Nouvelle-Calédonie |
title_fullStr |
Présence saisonnière de l’orque (Orcinus orca: morphotype A) au large de la Nouvelle-Calédonie |
title_full_unstemmed |
Présence saisonnière de l’orque (Orcinus orca: morphotype A) au large de la Nouvelle-Calédonie |
title_sort |
présence saisonnière de l’orque (orcinus orca: morphotype a) au large de la nouvelle-calédonie |
publisher |
Société Zoologique de France |
publishDate |
2022 |
url |
https://archimer.ifremer.fr/doc/00822/93438/100181.pdf https://archimer.ifremer.fr/doc/00822/93438/ |
long_lat |
ENVELOPE(-55.898,-55.898,49.750,49.750) |
geographic |
Austral White Patch |
geographic_facet |
Austral White Patch |
genre |
Killer Whale Orca Orcinus orca Killer whale |
genre_facet |
Killer Whale Orca Orcinus orca Killer whale |
op_source |
Bulletin de la Société Zoologique de France (0037-962X) (Société Zoologique de France), 2022 , Vol. 147 , N. 2 , P. 51-56 |
op_relation |
https://archimer.ifremer.fr/doc/00822/93438/100181.pdf https://archimer.ifremer.fr/doc/00822/93438/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
_version_ |
1766057264956833792 |