不論是魚或是螃蟹，鰓是一個多功能的器官，至少負責氣體交換、離子調節、含氮廢物的排除及酸鹼平衡等重要功能。各功能在鰓上的消長現象是否有其演化上的關係，是一個有趣的問題。具有呼吸空氣能力的魚種，在鰓及相關輔助呼吸空氣的結構特化與消長是研究主題。此外，螃蟹廣泛分布在各種棲地(如：深海熱泉、各類海域、潮間帶、河口區、溪流、陸地；是在地球上分布最廣、生存棲地變異最大的類群之一。這個廣佈的特性，使本類群非常合適用來進行生理多樣性的研究。

My interest is mainly animal evolutionary physiology, particularly the comparative aspects of osmoregulation and respiration of intertidal organisms, such as the euryhaline fishes and crabs. Currently, I focus my attention to the application of phylogeny and systematics as the basis for discussing the morphological and physiological adaptation for the organisms investigated.

For both fish and crabs, gills are an organ with multiple functions, including gas exchange, ion regulation, nitrogenous waste excretion and acid-base balance. Whether the compensatory physiological responses have any evolutionary basis is an interesting question. I focused on examining the modification and trade-offs between the gills and other accessory breathing organs in the air-breathing fishes. In addition, crabs are one of the most widely distributed organisms on earth, ranging from hydrothermal vents, marine, intertidal areas, estuaries, fresh water and terrestrial regions. They are particularly suitable for studying physiological biodiversity.