马提尼察亚种白胸脱毛鱼(Ramphocinclus brachyurus brachyurus)的形态变异

Steven Philippe Son, Thomas Alexandrine, S. Motreuil, D. Imbert, Jean-Raphael Gros-Desormeaux
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引用次数: 1

摘要

白胸打谷鸟(Ramphocinclus brachyurus)是雀鸟科中最小的雀形目鸟类。世界自然保护联盟将其列为“濒危物种”,这种物种的人口分布在小安的列斯群岛的两个岛屿上分布不均。据估计,圣卢西亚亚种Ramphocinclus brachyurus sanctaelucae的数量在1200到1700只之间,而马提尼克亚种Ramphocinclus brachyurus brachyurus的数量在200到400只之间。马提尼克岛亚种是一种具有高度灭绝危险的地方性稀有物种,应作为保护重点。马提尼克岛的亚种数量少,地理分布范围窄,生境容忍度低,研究难度大。该亚种的形态性状变异近来尚未进行生物统计学分析。为了更新知识和填补任何空白,我们使用形态计量学方法研究马提尼克亚种的形态变异。研究地点是位于马提尼克岛(法属西印度群岛)东北部的一个小半岛,被称为“la Caravelle”。我们捕获了63个不同的栖息地。
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Morphological Variation in the Martinican Subspecies White-Breasted Thrasher (Ramphocinclus brachyurus brachyurus)
The White-breasted Thrasher (Ramphocinclus brachyurus) is the smallest passerine bird in the Mimids family. Ranked as “endangered” in the IUCN list, the demographic distribution of this species is spread unevenly across two islands in the Lesser Antilles. The Saint-Lucian subspecies, Ramphocinclus brachyurus sanctaeluciae, was estimated to number between 1200 and 1700 individuals, whereas the Martinique subspecies, Ramphocinclus brachyurus brachyurus, was estimated at between 200 and 400 individuals. As an endemic rare species with a high risk of extinction, the Martinique subspecies should be regarded as a conservation priority. The small size of the Martinique subspecies population, its restricted geographical range, and its narrow habitat tolerance make it quite difficult to study. The variability of morphological traits in this subspecies has not been biostatistically analyzed recently. In order to update knowledge and fill in any gaps, we have used the morphometric approach to study the morphological variability of the Martinique subspecies. The study site is a small peninsula located in the northeast of the island of Martinique (French West Indies) known as “la Caravelle”. We captured 63 ferent habitats.
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