Georgia Distribution and Characterization of Species within the Eurycea quadridigitata Complex

IF 0.6 4区环境科学与生态学 Q4 BIODIVERSITY CONSERVATION Southeastern Naturalist Pub Date : 2022-07-08 DOI:10.1656/058.021.0207

S. Graham, D. Walker, C. Kelehear, J. Jensen, Khorizon Dunn, C. Guyer

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Abstract

Abstract - We performed systematic surveys for members of the Eurycea quadridigitata (Dwarf Salamander) complex in Georgia to determine the distribution of member species. Over 409 person-hours of search effort, we sampled 211 locations in 38 counties, detecting 108 individuals, including many that bridge substantial distribution gaps. Molecular data document Georgia specimens belong to 2 species, E. hillisi and E. quadridigitata. No specimens attributable to E. chamberlaini were found in Georgia, indicating this species has a distribution restricted to South and North Carolina. We used color patterns and measures of body size and shape of specimens identified by molecular methods to separate 4 species of 4-toed Eurycea from the Coastal Plain of Alabama, Florida, Georgia, South Carolina, and North Carolina. Large body size and the presence of melanophores across the chin and surrounding the cloaca separated E. quadridigitata from all others. Additionally, E. sphagnicola and E. quadridigitata possessed dark sides to the body and tail, with these features being disrupted by irregular white stripes or spots. In contrast, E. chamberlaini and E. hillisi possessed light sides to the body and tail that lacked irregular white stripes. Small body size distinguished E. sphagnicola from E. quadridigitata, but no feature distinguished E. chamberlaini from E. hillisi.

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佐治亚州四足蕨复合体内物种的分布与特征

摘要/ Abstract摘要:本文对乔治亚州矮鲵(Eurycea quadridigitata)复合体的成员进行了系统调查，以确定成员物种的分布。在409人小时的搜寻工作中，我们在38个县的211个地点进行了抽样调查，发现了108个人，其中包括许多弥合了巨大分布差距的人。分子资料显示，格鲁吉亚标本属于2种，分别是E. hillisi和E. quadridigitata。在乔治亚州没有发现属于张伯伦的标本，表明该物种的分布仅限于南、北卡罗莱纳。我们利用分子方法鉴定的标本的颜色图案和身体大小和形状的测量来分离来自阿拉巴马州，佛罗里达州，佐治亚州，南卡罗来纳州和北卡罗来纳州沿海平原的4种四趾Eurycea。庞大的体型和横跨下巴和泄殖腔周围的黑素细胞的存在，将四趾鳗与其他所有物种区分开来。此外，水龙花和四趾花的身体和尾巴都有深色的一面，这些特征被不规则的白色条纹或斑点所打断。相比之下，E. chamberlaini和E. hillisi的身体和尾巴有浅色的一面，没有不规则的白色条纹。小的体型特征区分了水仙和四趾莲，但没有特征区分大腹莲和大腹莲。

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来源期刊

Southeastern Naturalist 环境科学-生态学

CiteScore

1.20

自引率

16.70%

发文量

审稿时长

18-36 weeks

期刊介绍： The Southeastern Naturalist covers all aspects of the natural history sciences of terrestrial, freshwater, and marine organisms and the environments of the southeastern portion of North America, roughly bounded from North Carolina south to Florida, west to Texas, north to Oklahoma, and east back to North Carolina. Manuscripts based on field studies outside of this region that provide information on species within this region may be considered at the Editor’s discretion.