Jean-Luc Jung
Dinard, Bretagne, France
781 abonnés
+ de 500 relations
À propos
Spécialité scientifique
- Analyse de la biodiversité intraspécifique et…
Articles de Jean-Luc
Activité
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Congratulations to Maevatiana for his last paper published in Proceedings B on the social calls of Humpback whale calves.
Congratulations to Maevatiana for his last paper published in Proceedings B on the social calls of Humpback whale calves.
Aimé par Jean-Luc Jung
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Un joli stage en Iroise au sein de l'équipe patrimoine naturel du Parc naturel marin d'Iroise
Un joli stage en Iroise au sein de l'équipe patrimoine naturel du Parc naturel marin d'Iroise
Aimé par Jean-Luc Jung
Expérience
Formation
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Université Louis Pasteur (Strasbourg I)
Licences et certifications
Publications
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Satellite telemetry of humpback whales off Madagascar reveals insights on breeding behavior and long-range movements within the Southwest Indian Ocean.
Marine Ecology Progress Series, 562:193-209.
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Magnetic Resonance Imaging Study of Adipose Tissues in the Head of a Common Dolphin (Delphinus delphis): Structure Identification and Influence of a Freezing–Thawing Cycle
Anatomia, Histologia Embryologia
Magnetic resonance imaging (MRI) was used to scan the head of a common dolphin (Delphinus delphis) in order to visualize the different adipose tissues involved in echolocation functioning and to precisely delineate their anatomical topology. MRI scans were performed on the head taken from a freshly stranded carcass and repeated after a 2-week freezing time followed by thawing. The main fatty organs of the head, that is the melon, the mandibula bulba, the bursae cantantes, and their different…
Magnetic resonance imaging (MRI) was used to scan the head of a common dolphin (Delphinus delphis) in order to visualize the different adipose tissues involved in echolocation functioning and to precisely delineate their anatomical topology. MRI scans were performed on the head taken from a freshly stranded carcass and repeated after a 2-week freezing time followed by thawing. The main fatty organs of the head, that is the melon, the mandibula bulba, the bursae cantantes, and their different connections with surrounding tissues were identified and labelled. The nasal sacs, other organs of echolocation, were also identified and labelled thanks to different MRI acquisitions. The shape, the location, the type of MRI signal of each organ and of their different connections were successfully analysed on all images, and then, the images of the head fresh or after thawing were compared. No impacts of the freezing/thawing cycle on the fatty tissues of the head were identified. Different parts were distinguished in the melon on the basis of the MRI signal emitted, corresponding most likely to the internal and external melon already identified by other analytical approaches, and linked to differences in lipid composition. MRI is shown here to be a useful tool to study the functional anatomy of the organs responsible for echolocation in odontocetes, with a particularly high level of precision.
Other authors -
Genetic structure of the beaked whale genus Berardius in the North Pacific, with genetic evidence for a new species
Marine Mammal Science
There are two recognized species in the genus Berardius, Baird's and Arnoux's beaked whales. In Japan, whalers have traditionally recognized two forms of Baird's beaked whales, the common “slate-gray” form and a smaller, rare “black” form. Previous comparison of mtDNA control region sequences from three black specimens to gray specimens around Japan indicated that the two forms comprise different stocks and potentially different species. We have expanded sampling to include control region…
There are two recognized species in the genus Berardius, Baird's and Arnoux's beaked whales. In Japan, whalers have traditionally recognized two forms of Baird's beaked whales, the common “slate-gray” form and a smaller, rare “black” form. Previous comparison of mtDNA control region sequences from three black specimens to gray specimens around Japan indicated that the two forms comprise different stocks and potentially different species. We have expanded sampling to include control region haplotypes of 178 Baird's beaked whales from across their range in the North Pacific. We identified five additional specimens of the black form from the Aleutian Islands and Bering Sea, for a total of eight “black” specimens. The divergence between mtDNA haplotypes of the black and gray forms of Baird's beaked whale was greater than their divergence from the congeneric Arnoux's beaked whale found in the Southern Ocean, and similar to that observed among other congeneric beaked whale species. Taken together, genetic evidence from specimens in Japan and across the North Pacific, combined with evidence of smaller adult body size, indicate presence of an unnamed species of Berardius in the North Pacific.
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Monitoring large marine vertebrates through DNA barcoding
Barcode Bulletin
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Analyzing Marine Predator Diets of the Iroise Sea.
Barcode Bulletin. 6(1): 4-5.
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First specimen record of Balaenoptera omurai off West Africa: interoceanic straggler or indication of a possible Atlantic population?
Scientific Committee Document SC/66a/SD/1, International Whaling Commission, San Diego, US, May-June
Other authors -
Isolation of CD34+ cells from peripheral blood and bone marrow of Tursiops truncatus
Marine Mammal Science Vol 29, pp 195-203
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The use of DNA barcoding to monitor the marine mammal biodiversity along the French Atlantic coast
Zookeys vol 365, pp. 5-24
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Harbour porpoises (Phocoena phocoena ) in north-western France : aerial survey, opportunistic sightings and strandings monitoring
Journal of the Marine Biological Association of the United Kingdom vol 89, pp 1045-1050
Plus d’activités de Jean-Luc
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un super podcast à écouter sur le bruit anthropique dans les océans....
un super podcast à écouter sur le bruit anthropique dans les océans....
Aimé par Jean-Luc Jung
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Les scientifiques doivent être des "avocats politiques". Cet excellent article de la revue Sience le rappelle : "La responsabilité scientifique…
Les scientifiques doivent être des "avocats politiques". Cet excellent article de la revue Sience le rappelle : "La responsabilité scientifique…
Aimé par Jean-Luc Jung
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Elise Gruau et Agnès Cathou nous amènent sous l'eau à la rencontre d'animaux fascinants! Pour devenir poissons ou cétacés, nous sommes plusieurs…
Elise Gruau et Agnès Cathou nous amènent sous l'eau à la rencontre d'animaux fascinants! Pour devenir poissons ou cétacés, nous sommes plusieurs…
Aimé par Jean-Luc Jung
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⏰ Quand tu te réveilles le matin avec une furieuse envie de poncer, inutile de tergiverser, autant sortir directement le « tank » 😅. 🔎Le ponçage…
⏰ Quand tu te réveilles le matin avec une furieuse envie de poncer, inutile de tergiverser, autant sortir directement le « tank » 😅. 🔎Le ponçage…
Aimé par Jean-Luc Jung
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Les habitats marins de la Martinique sont cartographiés et en ligne! En se basant sur la récente typologie PatriNat (OFB-MNHN-CNRS-IRD) grâce au…
Les habitats marins de la Martinique sont cartographiés et en ligne! En se basant sur la récente typologie PatriNat (OFB-MNHN-CNRS-IRD) grâce au…
Aimé par Jean-Luc Jung
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Jour J : l’exposition « Migrations, une odyssée humaine » est ouverte ! 🚈 Dans le débat public, la question des migrations est largement traitée…
Jour J : l’exposition « Migrations, une odyssée humaine » est ouverte ! 🚈 Dans le débat public, la question des migrations est largement traitée…
Aimé par Jean-Luc Jung
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J’ai eu le plaisir d’intervenir récemment lors d’une conférence organisée par le Muséum et la Société d'Histoire Naturelle de Toulouse que je…
J’ai eu le plaisir d’intervenir récemment lors d’une conférence organisée par le Muséum et la Société d'Histoire Naturelle de Toulouse que je…
Aimé par Jean-Luc Jung
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I'm very pleased to have contributed to an interesting article describing the enzymes involved in the adhesion of marine organisms: the “blue…
I'm very pleased to have contributed to an interesting article describing the enzymes involved in the adhesion of marine organisms: the “blue…
Aimé par Jean-Luc Jung
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🌊Vous travaillez sur les habitats benthiques, l'hydromorphologie, la physique des océans et vous avez envie de mettre votre expertise au service des…
🌊Vous travaillez sur les habitats benthiques, l'hydromorphologie, la physique des océans et vous avez envie de mettre votre expertise au service des…
Aimé par Jean-Luc Jung
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Un Dîner en faveur de la biodiversité 🐟🌿 Mardi 19 novembre, le Muséum national d’Histoire naturelle a accueilli entreprises, fondations et…
Un Dîner en faveur de la biodiversité 🐟🌿 Mardi 19 novembre, le Muséum national d’Histoire naturelle a accueilli entreprises, fondations et…
Aimé par Jean-Luc Jung
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