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Status and distribution of the Alligator Snapping Turtle (Macrochelys temminckii) in southeastern Missouri

机译:密苏里州东南部的鳄龟(Macrochelys temminckii)的现状和分布

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Macrochelys temminckii Harlan (Alligator Snapping Turtle) is a large aquatic turtle species that has been experiencing population declines throughout its range. Unfortunately, little is known about the species' basic biology or historic status throughout the majority of its range. In order to better understand the status and distribution of M. temminckii in southeastern Missouri, we visited 50 sites with suitable habitat and trapped at 19 of them in Dunklin, Mississippi, New Madrid, and Pemiscot counties, MO in 1994. We captured 37 M. temminckii at four sites in Pemiscot and Dunklin counties. The Dunklin County site was resampled in 1997, and radio transmitters were attached to 11 Alligator Snapping Turtles (6 males: 4 females: I unknown sex). Telemetered turtles were found at microhabitats consisting of more cover, high-density canopy, and lower gradient banks than random locations. We noted a significant difference in turtle size between sites that have and those that have not experienced historical take of Alligator Snapping Turtles.
机译:Macrochelys temminckii Harlan(短吻鳄龟)是一种大型水生乌龟,在其整个范围内种群数量一直在下降。不幸的是,在整个物种的大部分范围内,对该物种的基本生物学或历史地位知之甚少。为了更好地了解密苏里州东南部的temminckii的状况和分布,我们于1994年访问了50个具有适当栖息地的地点,并困在其中的19个中,分别位于敦克林,密西西比州,新马德里和密西西比州。我们捕获了3700万temminckii位于Pemiscot和Dunklin县的四个地点。 Dunklin县的站点在1997年进行了重新采样,无线电发射器连接到了11只短吻鳄龟(6例雄性:4例雌性:性别未知)。遥测海龟在微生境中被发现,与随机位置相比,它们具有更多的掩盖,高密度的树冠和更低的坡度。我们注意到,有和没有经历过鳄龟捕捞历史的地点之间的乌龟大小存在显着差异。

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