Publications by authors named "Masahide Kaeriyama"
The ability to distinguish between different migratory behaviours (e.g., anadromy and potamodromy) in fish can provide important insights into the ecology, evolution, and conservation of many aquatic species.
View Article and Find Full Text PDFMature male Pacific salmon (Genus Oncorhynchus) develop a dorsal hump, as a secondary male sexual characteristic, during the spawning period. Previous gross anatomical studies have indicated that the dorsal humps of salmon are mainly composed of cartilaginous tissue (Davidson [1935] J Morphol 57:169-183.) However, the histological and biochemical characteristics of such humps are poorly understood.
View Article and Find Full Text PDFArticle Synopsis
- Anadromous Pacific salmon imprint on odors from their birth streams during migration and use their sense of smell to navigate home.
- The development and structure of the olfactory organ, crucial for this imprinting, were studied in chum salmon, specifically looking at changes in olfactory lamellae and olfactory receptor neurons (ORNs) from alevin to maturity.
- The research found that the number of lamellae increased significantly during early development and that the number of ORNs grows dramatically from about 180,000 in fry to 14.2 million in mature salmon, demonstrating a relationship between body size and olfactory neuron quantity throughout their life cycle.