Page 23 - OPCFHK Annual Report 2018-19

亞洲區內保育工作：標記、追蹤和觀察—遠東哲羅鮭

Regional Conservation Efforts: Tagging, Tracking and Observing –
Sakhalin Taimen

威脅及保育價值 Threats and conservation values
位於日本北海道的猿払川對於迴遊而來產卵的成年 Located in Hokkaido Japan, the Sarufutsu River is challenging to
遠東哲羅鮭可謂一大挑戰，因為河道中設有很多理應 navigate for spawning Sakhalin taimen adults as it is full of culverts
被移除或需要維修的暗渠（包括人工隧道或溪澗）。 (man-made tunnels or streams) that should be removed or
遠東哲羅鮭屬鮭科的迴游魚類，分布範圍由日本北部 repaired. The Sakhalin taimen, a threatened migratory fish of the
至俄羅斯遠東地區。有關項目是首個嘗試追蹤此物種 Salmonidae family, has a natural habitat that ranges from northern
Japan to the Russian Far East. This ongoing study is the first
產卵期和遷移至淡水習性之研究。 attempt at tracking the Sakhalin taimen’s spawning schedules and
freshwater migratory patterns.
Conservation efforts and achievements

An electronic tagging and surveillance programme in the Sarufutsu
River, led by Limnos, LLC, enables researchers to track fish in
the watershed and better understand what happens to them.
Researchers have successfully captured, tagged and released
94 adult taimen, many more than they managed in the previous
study. Interviews and questionnaires are also administered to
understand the attitudes of anglers towards catch-and-release
fishing practices, while estimating the number of taimen captured
each year in the lower river. Results indicate that the established
© Peter Rand protected area helps conserve the critical spawning habitat, and
the species appears to be resilient to catch-and-release sport
保育工作與成果 fishing in the lower river.
由 Limnos, LLC 領導的電子標記和監察計劃，讓研究人員
可追蹤猿払川中的魚類，從而了解牠們的生活狀況。
研究人員已經成功標記九十四條成年遠東哲羅鮭，
數目遠超之前所進行之研究。除了估算每年在下游
被捕撈的遠東哲羅鮭數量，研究人員還對垂釣者進行
問卷調查以了解他們對處理捕獲和放生之釣魚道德的
看法。研究結果顯示，建立保護區有助保護遠東哲羅鮭
重要的產卵地，而遠東哲羅鮭對下游捕獲和放生活動
亦有較強的適應力。

© H Perryi

© Peter Rand

學名 Hucho perryi
Scientific name
概要 研究人員一直追蹤和監察遠東哲羅鮭的數量和徊游路線
Overview Researchers have been tracking and monitoring the Sakhalin taimen's migratory route and numbers
保育狀況 極度瀕危
IUCN status Critically Endangered
估計數量 缺乏準確數據，但數量正在下降
Population Limited data available on the absolute population size of this species, but numbers are known to be declining
主要威脅 棲息地破碎化和重要的產卵徊游路線受阻
Threats Habitat fragmentation and blockage of important routes for reproductive migration

Conservation & Research | 21