Batch-like arrival waves of glass eels of Anguilla japonica in offshore waters of Taiwan
Journal
Zoological Studies
Journal Volume
55
Date Issued
2016
Author(s)
Abstract
were observed, with peaks occurring between the last quarter and first quarter lunar periods, with a near one-month periodicity. No arrival peaks were found during the full moon period, suggesting that the glass eels exhibit light-avoidance behavior. Furthermore, all of the batches of arrivals were in the early pigmentation stage and similar in age (around 150-160 days), suggesting that they are likely a new arrival cohort. The tracer simulation showed that the mean tracer drift time, from the presumed spawning site to Yilan, was 155 ± 19.8 days. The observed batch-like arrival waves of glass eels in the offshore waters of Taiwan support the "New Moon Hypothesis," which suggests that there is synchronized spawning behavior of the eels during the new moon period.
SDGs
Type
journal article