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Fine Structure of the Pineal Organ in the Troglobytic Fish, Typhlichthyes Subterraneous (Pisces: Amblyopsidae)

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Journal Cell Tissue Res
Date 1978 Dec 29
PMID 728980
Citations 6
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Abstract

The pineal organ of the blind, cave-dwelling fish, Typhlichythyes subterraneous, was examined with both light and electron microscopes. Like the eyes, the pineal in this troglobytic species was found to be regressed. Two cell types, photoreceptor and supportive cells, were described in the pineal epithelium. Although ganglion cells were not identified, small, unmyelinated nerve fibers were present. The photoreceptor cells had degenerated outer segments. Accordingly, it was suggested that the pineal in this species is not likely to function in photoreception. However, the presence of well developed Golgi bodies, clear and dense-cored vesicles, variable amounts of rough endoplasmic reticulum and glycogen particles indicated that both cell types are metabolically active and may play a role in secretion.

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References
1.
Pevet P, Collin J . [Mammalian pinealocytes. Differences, homologies, origin. Study in the adult mole (talpa europaea L.)]. J Ultrastruct Res. 1976; 57(1):22-31. DOI: 10.1016/s0022-5320(76)80051-2. View

2.
Fenwick J . The pineal organ: photoperiod and reproductive cycles in the goldfish, Carassius auratus L. J Endocrinol. 1970; 46(1):101-11. DOI: 10.1677/joe.0.0460101. View

3.
Rudeberg C . Light and electron microscopic studies on the pineal organ of the dogfish, Scyliorhinus canicula L. Z Zellforsch Mikrosk Anat. 1969; 96(4):548-81. DOI: 10.1007/BF00973334. View

4.
Vodicnik M, De Vlaming V . The effects of pinealectomy on pituitary prolactin levels in Carassius auratus exposed to various photoperiod-temperature regimes. Endocr Res Commun. 1978; 5(3):199-210. DOI: 10.1080/07435807809083753. View

5.
Delahunty G, Bauer G, Prack M, de Vlaming V . Effects of pinealectomy and melatonin treatment on liver and plasma metabolites in the goldfish, Carassius auratus. Gen Comp Endocrinol. 1978; 35(2):99-109. DOI: 10.1016/0016-6480(78)90151-x. View