贵州洞穴螺类的物种多样性及分布初步研究

2001年1月至2002年8月对贵州的龙洞、和尚洞、竹林洞及织金洞等50余个洞穴内的螺类进行了调查,共采集标本1306号,经鉴定和分类,隶属1纲2目15科108种, 其中有4个新种.不难看出,贵州洞穴螺类的物种丰富度较高,并具有从有光带到弱光带呈下降趋势;从物种的丰度来看,在有光带最高,弱光带和黑暗带则无明显的差异. 优势种不明显.从水平分布看, 分布的种类和数量最多的均是有光带; 从空间分布看, 主要分布于洞底. 此外, 还对螺类适应洞穴生活的特征及保护作了初步分析.

A PRELIMINARY STUDY ON SPECIES DIVERSITY AND DISTRIBUTION OF SNAILS IN CAVES OF GUIZHOU PROVINCE

From January 2001 to August 2002, after the investigation of more than 50 caves in Guizhou province, such as Longdong cave, Heshang cave, Zhulin cave, Zhijin cave, 1306 specimens of snail are collected, which are classified into 108 species that belong to 15 families, 2 orders and 1 class, including 4 new species. It is easy to see that the richness of snail in caves of Guizhou is very high, but decreasing from the light area to the weak light or lightless area. The species richness is highest in the light area, but there is no obvious difference between the weak light area and no light area. There is no obvious preponderance of any species. In terms of the horizontal distribution, most species and number of the snail live in the light area. In terms of the spatial distribution, they mainly live at the bottom of caves. In addition, the characteristics of the adaptability of snails to the caves and the protection of snails are also analyzed here.