Abstract
A biologging technique for monitoring the egg-releasing behavior of Pacific abalone Haliotis discus hannai in the wild
Highlights
To examine causes of variation in population dynamics of abalone species, it is important to understand their reproductive behavior
Similar effects of larval dispersal on population dynamics have been reported for abalone species around the world, and differences in the timing of spawning could affect larval dispersal through the effects of hydrodynamics (Miyake et al 2017)
This study showed that spawning behavior can be discriminated readily and objectively by determining the dominant frequencies and amplitudes of time series acceleration during egg-releasing behavior of Haliotis discus hannai
Summary
To examine causes of variation in population dynamics of abalone species, it is important to understand their reproductive behavior. In the abalone Haliotis diversicolor aquatilis, juveniles are not observed in years when typhoons do not impact the study areas, so typhoons have been suggested to induce spawning in this species (Onitsuka et al 2007). The mechanisms underlying variation in the scale of spawning has not been determined, the number of spawning individuals likely increases when a strong storm approaches (Sasaki & Shepherd 2001). Similar effects of larval dispersal on population dynamics have been reported for abalone species around the world, and differences in the timing of spawning could affect larval dispersal through the effects of hydrodynamics (Miyake et al 2017). Observations of abalone spawning behavior in the wild are limited
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