西藏色季拉山高山倭蛙的产卵地选择

高山倭蛙(Nanorana parkeri)是青藏高原的特有种和广布种.2011 ～2012年,在西藏色季拉山高山倭蛙的繁殖期内对其产卵地选择进行了调查.测量分析了产卵地及对照样方的10个环境变量后,发现高山倭蛙的产卵地与对照样方在底质、pH、水温、水深、植被盖度和有无鱼方面有显著差异,回归分析表明底质特点和pH是影响高山倭蛙产卵地选择的最主要因素.今后在该物种的保护工作中,应加强对湿地中底质为泥、pH偏中性水体的保护.

Oviposition Sites Selection by Nanorana parkeri in Sejila Mountain, Tibet

Nanorana parkeri is endemic and widespread in the Qinghai-Tibet Plateau. Oviposition sites selection by N.parkeri was studied in four marshlands in Sejila Mountain, Tibet, during the breeding period in 2011 and 2012. Habitats were surveyed with respect to oviposition (n=37) and random (n=37) sites by measuring 10 factors that might influence the choice of an oviposition site. There were significant differences in the substrate, pH value, water temperature, water depth, vegetation coverage, and fish present between oviposition sites and random sites. Logistic regression analysis indicated that substrate and water pH were the most important factors influencing the choice of female N.parkeri. It is suggested that protecting water bodies with mud substrate and water pH value close to 7 in the marshes is important to the conservation of N.parkeri.