鼠类扩散种子的几种标签标记法的比较

以四川省都江堰市亚热带常绿阔叶林内的优势鼠种——小泡巨鼠为实验动物,通过半自然状态围栏控制实验,检验了几种种子标签法对鼠类扩散植物种子的影响。结果表明:鱼线和细钢丝两种标记线在跟踪扩散种子命运上都是很有效的,但考虑到鱼线有时会被实验鼠咬断,细钢丝是更值得推广应用的一种标记线。3种标记牌(大塑料牌、小塑料牌和金属牌)在跟踪扩散种子命运上没有显著差异,但由于较大的尺寸和较强的可见度,大塑料牌更适合作为标签应用于野外种子扩散标记。

Comparison of several tag-marked methods in seed dispersal by rats

Using Edward’s long-tailed rat (Leopoldamys edwardsi), a dominant species in subtropical evergreen broadleaf forests in Dujiangyan City of Sichuan Province, as the experimental animal, a field study with semi-natural enclosure was conducted to examine the effects of several tag-marked methods on the seed dispersal by rats. Among the methods examined, both the marked lines fishing thread and thin steel wire were effective on tracking the seed fates dispersed by rats, but, in considering that the fishing thread was sometimes bitted off by experimental rats, the steel wire was more worthy of application as a kind of perfect marked line. Three kinds of marked tags, i.e., large plastic tag, small plastic tag, and wire tag, did not differ on tracking the seed fates dispersed by rats, but the large plastic tag, due to its large size and strong visibility, was more suitable to be a perfect marked tag for field seed dispersal.