期刊
CELL AND TISSUE RESEARCH
卷 302, 期 2, 页码 199-203出版社
SPRINGER-VERLAG
DOI: 10.1007/s004410000278
关键词
galanin; peptides; preoptic area; hypothalamus; dimorphism; red salmon, Oncorhynchus nerka (Teleostei)
类别
A sexually dimorphic distribution of galanin in the preoptic region of the moly 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.
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