Roosting and foraging ecology of the Queensland blossom bat (Syconycteris australis) in north-eastern New South Wales: flexibility in response to seasonal variation
Roosting and foraging ecology of the Queensland blossom bat (Syconycteris australis) in north-eastern New South Wales: flexibility in response to seasonal variation
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新南威尔士州东北部昆士兰花蝠（Syconycteris australis）的栖息和觅食生态：应对季节变化的灵活性
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发表时间：
1993
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通讯作者：
B. Law
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作者：
B. Law
利用无线电遥测技术在新南威尔士州北部的Iluka和Harrington追踪花蝠（syconcyteris australis）。总共有31只蝙蝠被追踪到110个栖息地。蝙蝠在Banksia integrtfolia石楠荒原上觅食花蜜和花粉，但在50-4000米外的沿海雨林中栖息。蝙蝠对它们的觅食区域（约13公顷）表现出很强的忠诚度，每晚都会回到它们最初的捕获点，并在那里花费大部分的觅食时间。离开巢穴后，成虫平均有45%的时间是活跃的，整晚都待在石楠荒原上。所有年龄-性别类在白天单独栖息在雨林的树叶中，通常在亚冠层。大多数的巢穴只被占据一天，成虫比幼虫更容易移动巢穴。哈林顿（125米）的栖息地之间的平均移动距离比伊卢卡（42米）更大，那里的雨林是破碎的，而伊卢卡的雨林是完整的。蝙蝠会季节性地转移它们的栖息地，从冬季的雨林边缘到春季或秋季的雨林内部。这种行为可以避免冬季森林内部的低温和春季/秋季森林外部的高温。对研究区季节性气候的进一步可能响应是通勤距离（从栖息地到觅食区）从秋季/春季（1.4km）减少到冬季（0.8km）。这种灵活的栖息和觅食策略可能有效地使澳大利亚南蝽利用澳大利亚的亚热带和温带地区。
Radiotelemetry was used to track blossom bats (Syconycteris australis) at Iluka and Harrington in northern New South Wales. A total of 31 bats was tracked to 110 roosts. Bats foraged on nectar and pollen in Banksia integrtfolia heathland, but roosted 50-4000m away in littoral rainforest. Bats showed a strong fidelity to their feeding area (about 13ha), returning to their original capture point each night and spending a large proportion of their foraging time there. After leaving their roost, adults spent, on average, 45% of their time active and remained in heathland throughout the night. All age-sex classes roosted solitarily during the day amongst rainforest foliage, usually in the subcanopy layer. Most roosts were occupied for one day only and adults were more roost-mobile than juveniles. Mean movements between roosts were greater at Harrington (125m), where the rainforest is fragmented, than at Iluka (42m), where rainforest is intact. Bats shifted their roosts seasonally, from the rainforest edge in winter to the rainforest interior in spring/autumn. This behaviour allows for avoidance of cold temperatures inside the forest in winter and of hot temperatures of the forest exterior in spring/autumn. A further possible response to the seasonal climate prevailing at the study area was a reduction in the commuting distance (from roosts to feeding areas) from autumn/spring (1.4km) to winter (0.8km). Such flexible roosting and foraging strategies may be effective in allowing S. australis to exploit subtropical and temperate areas of Australia.