| 英文摘要 |
Biomass of estuarine larval fish is an important indicator for predicting fishing resources. Therefore, to understand their species composition and abundance is essential for fishery management. The recruitment mechanism of the larval fishes from spawning ground to estuaries is not clear. This project will target on the recruitment mechanism of the progy which is a dominant species in the estuary of Taiwan. We will calculate the daily age and growth rate of the larval progies by reading their otolith daily growth increments and analyse the otolith Sr/Ca ratios and trace element composition to trace their migratory history and habitat use. We expect to understand the spawning season and early life history of each progy species, and the knowledge will also offer important references for fishery resources assessment and habitat conservation and management. |