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Molecular phylogeny of Squaliformes and first occurrence of bioluminescence in sharks
BackgroundSqualiform sharks represent approximately 27 % of extant shark diversity, comprising more than 130 species with a predominantly deep-dwelling lifestyle. Many Squaliform species are highlyExpand
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Is Extreme Bite Performance Associated with Extreme Morphologies in Sharks?*
As top predators in many oceanic communities, sharks are known to eat large prey and are supposedly able to generate high bite forces. This notion has, however, largely gone untested due to theExpand
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Early development of bioluminescence suggests camouflage by counter‐illumination in the velvet belly lantern shark Etmopterus spinax (Squaloidea: Etmopteridae)
The development of luminous structures and the acquisition of luminescence competence during the ontogeny of the velvet belly lantern shark Etmopterus spinax, a deep-sea squalid species, wereExpand
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Photon Hunting in the Twilight Zone: Visual Features of Mesopelagic Bioluminescent Sharks
The mesopelagic zone is a visual scene continuum in which organisms have developed various strategies to optimize photon capture. Here, we used light microscopy, stereology-assisted retinalExpand
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Hormonal control of luminescence from lantern shark (Etmopterus spinax) photophores
SUMMARY The velvet belly lantern shark (Etmopterus spinax) emits a blue luminescence from thousands of tiny photophores. In this work, we performed a pharmacological study to determine theExpand
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A deepwater fish with ‘lightsabers’ – dorsal spine-associated luminescence in a counterilluminating lanternshark
We report the discovery of light organs (photophores) adjacent to the dorsal defensive spines of a small deep-sea lanternshark (Etmopterus spinax). Using a visual modeling based on in vivoExpand
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Phantom hunter of the fjords: Camouflage by counterillumination in a shark (Etmopterus spinax)
Many midwater animals emit ventral light to hide their silhouette in the water column. This phenomenon known as counterillumination typically requires fine control over light emission since it needsExpand
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Control of luminescence from pygmy shark (Squaliolus aliae) photophores
SUMMARY The smalleye pygmy shark (Squaliolus aliae) is a dwarf pelagic shark from the Dalatiidae family that harbours thousands of tiny photophores. In this work, we studied the organisation andExpand
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A global perspective on the trophic geography of sharks
Sharks are a diverse group of mobile predators that forage across varied spatial scales and have the potential to influence food web dynamics. The ecological consequences of recent declines in sharkExpand
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Ontogeny of photophore pattern in the velvet belly lantern shark, Etmopterus spinax.
Bioluminescence is known to be of great ecological importance to a luminous organism but extremely few studies investigate the ontogeny of luminous capabilities. The photogenic pattern of the velvetExpand
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