蝙蝠研究
2019_烏石坑地區玄彩蝠(Kerivoula furva)之活動範圍、活動模式與棲地利用_吳立越
出版年份:2019
研究生:吳立越
分類:碩士論文
題目:烏石坑地區玄彩蝠(Kerivoula furva)之活動範圍、活動模式與棲地利用
Title:Home range, activity pattern and habitat use of Dark woolly bat (Kerivoula furva) in Wu-Shi-Keng area, central Taiwan
摘要:
了解物種在不同環境因子下的行為,有助於本研究提出經營管理的方針。台中市烏石坑地區的玄彩蝠(Kerivoula furva)以台灣芭蕉捲葉作為日棲所,並形成不同社會群。本研究在2017年6月至8月及2017年12月到2018年2月,以無線電追蹤探討烏石坑地區的玄彩蝠是否會隨季節改變其行為,以及社會群間的夜間活動範圍是否有差異。結果顯示烏石坑地區玄彩蝠相同個體在暖寒兩季夜間活動範圍重疊度高,沒有出現季節性遷移行為,雖然暖季活動範圍面積顯著高於寒季(95% MCP),但暖季及寒季的空間分布沒有顯著差異(95% and 50% KDE, 50% MCP)。芭蕉新生捲葉是研究期間樣區內記錄到玄彩蝠唯一的日棲所。玄彩蝠暖季的平均每日活動時數顯著高於寒季;暖季時夜間每個整點的相對活動比率皆高,寒季時則隨時間逐步遞減。此外,寒季時玄彩蝠夜間是否外出活動與日落時的溫度顯著相關,日落時氣溫若低於10度則不活動。研究發現玄彩蝠有棲地選擇性,且在河流及天然裸露地活動的比率相對較低。相同社會群的個體其夜間活動範圍的重疊度較高,不同社會群間則有區隔。
Abstract:
Understanding wildlife behavior under various environmental conditions is important for conservation strategy and management. Dark woolly bats (Kerivoula furva) use curled leaves of plantain (Musa formosana) as day roost and form different social groups in Wu-Shi-Keng area, Taichung. This research compared their behavior in the warm season (June-August, 2017) and cool season (December, 2017-February, 2018) and analyzed the overlapping of their home-range between different social groups using radio telemetry. Home ranges of the same individual highly overlapped between the warm and cool season, indicating that they do not migrate. Home range size in the warm season was significantly larger than that in the cool season (95 % MCP), but spatial distribution of home ranges did not differ between the two seasons (95% and 50% KDE, 50% MCP). Curled leaves of plantain was the only day roost in the study area. Activity duration of bats in the warm season was significantly longer than that in the cool season. The activity level of bats in the warm season remained high from sunset to sunrise, but in the cool season the activity level gradually decreased after sunset. When the ambient temperature was below 10 °C in the cool season bats did not emerge from their day roosts in the evening. The Dark woolly bats used bare land and river less than their availabilities. The home ranges of individuals from the same social group overlapped significantly more than that of individuals from different social groups.