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Ultrastructure and biochemistry of the pineal organ in deep-sea lanternfishes (Myctophidae) |
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| Authors: | J. A. McNulty M. A. Neighbors M. H. Horn |
| Affiliation: | (1) Department of Anatomy, Loyola University Stritch School of Medicine, 60153 Maywood, Illinois, USA;(2) Department of Biological Sciences, California State Fullerton, 92634 Fullerton, California, USA |
| Abstract: | Summary Pineal structural and biochemical adaptations in lanternfishes included: 1) few photoreceptor outer segment discs; 2) conventional synapses between photoreceptors and pineal neurons; and 3) low levels (0–60 pg/pineal) of serotonin compared to those (>1.0 ng/pineal) in the goldfish pineal organ. These findings suggest reduced photosensory and/or neuroendocrine functions in these deep-sea fishes. |
| Keywords: | Pineal serotonin photoreceptors synapses lanternfishes goldfish |
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