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首页> 外文期刊>Southeastern naturalist >Crayfishes of the Apalachicola Ravines, Northern Florida: A Search for the Fireback Crayfish, Cambarus pyronotus
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Crayfishes of the Apalachicola Ravines, Northern Florida: A Search for the Fireback Crayfish, Cambarus pyronotus

机译：阿帕拉契科拉峡谷的小龙虾，北佛罗里达：寻找回火小龙虾，Cambarus pyronotus

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摘要

The series of steep, wooded ravines along the eastern side of the Apalachicola River in Gadsden and Liberty counties, FL, is recognized for its rich biodiversity. Little recent information is available on crayfishes of this unique ecosystem. During surveys conducted from 1939–1941, 5 taxa, including one undescribed species (now Cambarus pyronotus [Fireback Crayfish]), were recorded. No crayfish studies were conducted in the Apalachicola Ravines in the ensuing 60 years, and the conservation status of C. pyronotus remained unknown. From June 1999–February 2002, we surveyed the Apalachicola Ravines to determine distributional limits and stream-by-stream occurrence of C. pyronotus and evaluate its conservation status in relation to the regional system of protected lands. We recorded 8 species of crayfishes, including 4 primary burrowers and 4 aquatic species. Members of each of these 2 groups exhibited distinct microgeographic and microhabitat selection patterns, with several species showing non-overlapping microdistributions. We documented C. pyronotus from only 12 of 29 stream drainages surveyed, all within the middle region of the survey area, for a total range estimate of about 80 km2. Most of the inhabited streams within this small range occur on protected lands and include multiple habitable branches.
机译：佛罗里达州加兹登和自由县的阿巴拉契科拉河东侧一系列陡峭的林地沟壑以其丰富的生物多样性而闻名。关于这种独特生态系统的小龙虾的最新信息很少。在1939年至1941年间进行的调查中，记录了5个分类单元，其中包括一个未描述的物种（现在称为Cambarus pyronotus [Fireback Crayfish]）。在随后的60年里，Apalachicola Ravines没有进行小龙虾研究，而且C. pyronotus的保存状态仍然未知。从1999年6月至2002年2月，我们对Apalachicola Ravines进行了调查，以确定了C. pyronotus的分布极限和逐流发生，并评估了其与受保护土地区域系统的保护状况。我们记录了8种小龙虾，其中包括4种初级穴居人和4种水生物种。这两组的每个成员都表现出不同的微观地理和微观栖息地选择模式，其中几种物种表现出不重叠的微观分布。我们记录了被调查的29条溪流排水系统中只有12条的C. pyronotus，全部位于调查区域的中部地区，总范围估计约为80 km2。在此小范围内的大多数人流都在受保护的土地上，并包括多个可居住的分支。

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