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首页> 外文期刊>Marine Biology: International Journal on Life in Oceans and Coastal Waters >Volumetric analysis of brain areas indicates a shift in sensory orientation during development in the deep-sea grenadier Coryphaenoides armatus
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Volumetric analysis of brain areas indicates a shift in sensory orientation during development in the deep-sea grenadier Coryphaenoides armatus

机译：Volumetric analysis of brain areas indicates a shift in sensory orientation during development in the deep-sea grenadier Coryphaenoides armatus

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摘要

Absolute and relative volumes of four sensory areas (olfactory bulb, optic tectum, octavolateral area, gustatory area) and two integration centers (telencephalon, cerebellum) were determined in 39 specimens of the demersal grenadier Coryphaenoides armatus from early postmetamorphic stages to adulthood (94-900 mm total length). The relative volume of the optic tectum decreased and the relative volume of the olfactory bulb increased up to a total length of about 500 mm (corresponding to a total weight of about 1 kg) and remained constant subsequently, whereas the relative volumes of the octavolateral and gustatory areas were unchanged during growth. The developmental switch in sensory orientation from vision to olfaction is associated with changes in behavior recorded in lander experiments and feeding strategies based on head morphology and stomach content.

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