Arofanatics Fish Talk Forums - View Single Post - Third eye of a fish

**amiidae** · 30-10-2005, 08:10 PM

Pineal Gland

The pineal gland is a light sensitive neuroendocrine structure that lies in the anterior brain and is a well-vascularized organ. This gland secretes melatonin that may play a role in controlling reproduction, growth, and migration.

There are cells with photopigments in the pineal gland of the brain, which seem to regulate daily rhythms and hormone release. But rods and cones were thought to be the only photoreceptors in the vertebrate eye.

http://www.afip.org/vetpath/POLA/POLA96/fish.txt

http://www.nature.com/news/1998/9807...0709-4_pf.html

30-10-2005, 08:10 PM	#2
amiidae Moderator Join Date: Mar 2004 Posts: 7,140	Pineal Gland The pineal gland is a light sensitive neuroendocrine structure that lies in the anterior brain and is a well-vascularized organ. This gland secretes melatonin that may play a role in controlling reproduction, growth, and migration. There are cells with photopigments in the pineal gland of the brain, which seem to regulate daily rhythms and hormone release. But rods and cones were thought to be the only photoreceptors in the vertebrate eye. http://www.afip.org/vetpath/POLA/POLA96/fish.txt http://www.nature.com/news/1998/9807...0709-4_pf.html __________________ MY ALL-NEW --> AMIIDAE.COM BLOG Last edited by amiidae; 30-10-2005 at 08:25 PM.