Patterns of Sperm Swimming Behaviour Depend on Male Mating Tactic and Spawning Environment in Chinook Salmon

Patterns of sperm swimming behaviour depend on male mating tactic and spawning environment in chinook salmon

Many species exhibit alternative mating tactics (ARTs), with larger socially dominant males competing for females and smaller males adopting “sneaker” strategies to exploit fertilisation opportunities without competition or courtship. Females typically prefer larger socially dominant males, but their ability to manipulate mating or fertilisation outcomes is largely unknown. Here, using chinook salmon Oncorhynchus tshawytscha, we examined whether…

Fighting for Floodplains: Evaluating Benefits of Floodplain Habitat for Juvenile Chinook Salmon in Changing Climates - FISHBIO

Floodplain habitat provides valuable benefits to juvenile fish, offering shelter from predators and increased nutrient availability and prey abundance. These benefits are especially critical for juvenile anadromous salmonids like Chinook salmon (Oncorhynchus tshawytscha) and steelhead (Oncorhynchus mykiss) in California’s Central Valley. As they migrate to the ocean, these young fish must traverse a gauntlet of hazards on their journey through th