ABSTRACT

We report leucism in groups of up to five tayras, Eira barbara, in a fish-bone human settlement in southern Roraima, centre of the Guyana shield of the Brazilian Amazonia, during systematic line transect surveys in Terra Firme forests. These tayras had much larger non-rounded ears, and much larger and robust paws compared to current descriptions of the species. The leucistic individuals were snow-white with the exception of the distal half of the forearms, front paws, and the eyes, which were black. Leucism appeared to be commoner in this region than in the rest of the Guyana shield, as it occurred in a non-isolated population. The leucistic individuals did not appear to face the disadvantages reported in the literature, such as competitive exclusion, or difficulties in intra-specific communication and recognition.

摘要

我们报告最多5个tay蛇，埃拉·芭芭拉（Eira barbara）在Terra Firme森林中进行系统的线横断面调查时，位于巴西亚马逊河圭亚那盾构中心的Roraima南部的鱼骨人居地。与目前对该物种的描述相比，这些泰勒具有更大的不倒圆的耳朵，并且爪也更大，更健壮。除了前臂的远端，前爪和眼睛是黑色的以外，其余的人都是雪白的。白化病在该地区似乎比圭亚那盾牌的其他地区普遍，因为它发生在非孤立的人群中。精神病患者似乎没有面对文献中报道的劣势，例如竞争性排斥或种内沟通和识别方面的困难。