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- Title
Sexually dimorphic distribution of galanin in the preoptic area of red salmon, Oncorhynchus nerka.
- Authors
Jadhao, Arun G.; Meyer, Dietrich L.
- Abstract
A sexually dimorphic distribution of galanin in the preoptic region of the molly and goldfish has previously been demonstrated. Females of these species lack galanin-immunoreactive perikarya in the preoptic nucleus. In contrast, we have found, in female red salmon, galanin-immunoreactive neurons in the magnocellular preoptic nucleus, located far lateral to the preoptic recess, whereas many immunoreactive fibers are present in the preoptic area in both genders. In addition, many immunoreactive neurons have been seen in the nucleus preopticus periventricularis and nucleus lateralis tuberis, also in both sexes. These findings support the notion that galanin may play a gender-specific role in red salmon.
- Subjects
SEXUAL dimorphism in animals; DIMORPHISM in animals; GALANIN; SOCKEYE salmon; HYPOTHALAMUS; ENDOCRINE glands; HYPOTHALAMO-hypophyseal system
- Publication
Cell & Tissue Research, 2000, Vol 302, Issue 2, p199
- ISSN
0302-766X
- Publication type
Article
- DOI
10.1007/s004410000278