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Détection de la coelentérazine chez cinq espèces de Myctophidae du plateau des Iles Kerguelen ArchiMer
Duchatelet, Laurent; Hermans, Claire; Duhamel, Guy; Cherel, Yves; Guinet, Christophe; Mallefet, Jérôme.
Myctophidae comprise the largest biomass of mesopelagic fishes in the Southern Ocean. This family has the ability to emit light – bioluminescence – via specific organs called photophores, and from the head and caudal organs. Through biochemical analyses, this study reveals that coelenterazine is the substrate for light reaction in the five most common myctophid species from the Southern Ocean. The results also support the hypothesis of the acquisition of this molecule via the food chain and reveal the presence of two stabilised storage forms of coelenterazine (enol-sulfate and dehydrocoelenterazine) within various tissues of the studied species. Finally, detection of coelenterazine in the gonads also suggests the potential maternal transfer of the...
Tipo: Text Palavras-chave: Myctophidae; Bioluminescence; Coelenterazine; Dehydrocoelenterazine; Enol-sulfate; Biochemical assays.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00502/61405/65084.pdf
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Distribution of Myctophidae (Pisces, Myctophiformes) during the four seasons in the mid North Atlantic Naturalis
Spoel, S. van der; Bleeker, J..
The distribution, temperature, and size ranges of 60 species of myctophids in the North Atlantic between 55°N and 24°N along approximately 30°W are recorded for the four seasons. The general zoogeography and migration is discussed. Faunal groups of species, faunal borders, and transition zones near 50°N, 41 °N, and 29°N for myctophids are distinguished and discussed.
Tipo: Article / Letter to the editor Palavras-chave: Myctophidae; Biogeography; North Atlantic; Faunal borders.
Ano: 1991 URL: http://www.repository.naturalis.nl/record/504270
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Éco-régionalisation et conservation des communautés benthiques de la zone économique exclusive française des îles Kerguelen ArchiMer
Martin, Alexis; Trouslard, Emmanuelle; Hautecoeur, Mélyne; Blettery, Jonathan; Moreau, Camille; Saucède, Thomas; Améziane, Nadia; Duhamel, Guy; Eléaume, Marc.
The deep-sea benthic ecosystems of the French Kerguelen exclusive economic zone remain poorly understood. To address benthic conservation issues, the authors recently contributed expert knowledge to guide the recent extension of the Marine Reserve of the ‘Terres australes françaises’. In this new study, we propose a benthic ecoregionalisation of the northern Kerguelen Plateau based on a measurable and repeatable methodology that relies on the generalised dissimilarity modelling technique. Data of macro-epibenthic invertebrate species from the POKER 2 (2010) fish stock assessment survey have been used to compute the models. Our results allow us (i) to characterise and map benthic landscape units based on assemblages of marine invertebrates pooled by taxa...
Tipo: Text Palavras-chave: Myctophidae; Bioluminescence; Coelenterazine; Dehydrocoelenterazine; Enol-sulfate; Biochemical assays.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00505/61671/65598.pdf
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Occurrence and distribution of larval lanternfish (Myctophidae) from the southwest Atlantic Ocean Rev. Bras. Zool.
Castro,Márcia S. de; Richards,William J.; Bonecker,Ana Cristina T..
This study analyzes the occurrence and distribution of lanternfish (Myctophidae) larvae along the Brazilian coast (12-22ºS) between 200 m and the surface. Three cruises were conducted during the spring/1998, winter/1999 and autumn/2000. A total of 3,394 lanternfish larvae were identified representing 27 species and Lepidophanes guentheri (Goode & Bean, 1896) was the most abundant. Most of the identified taxa were in the postflexion stage. Myctophid larvae were more numerous during the winter. Most taxa were distributed widely from 12-22ºS, including some seamounts, and occurred mainly outside the 1,000 m isobath. Although there was no difference in the myctophid community among the coastal, oceanic and seamount regions it was significantly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian coast; Larval mesopelagic fish; Myctophidae; Spatial variation; Tropical region.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000400006
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