ENVIRONMENTAL ASSOCIATIONS OF CAMBARUS VETERANUS FAXON, 1914 (DECAPODA: CAMBARIDAE), AN IMPERILED WEST VIRGINIAN CRAYFISH

Authors

  • Zachary Wade Dillard West Liberty University
  • Stuart A. Welsh USGS, West Virginia Cooperative Fish and Wildlife Research Unit
  • Nicole M Sadecky West Liberty University; West Virginia DNR
  • Rachel K Scott West Liberty University
  • Zachary J Loughman West Liberty University

Keywords:

Big Sandy crayfish, conservation, Qualitative Habitat Evaluation Index

Abstract

Cambarus veteranus Faxon, 1914, a narrow endemic crayfish native to the Upper Guyandotte River Basin (UGB) in West Virginia, USA, was petitioned in 2005 by the United States Fish and Wildlife Service to be listed as endangered, but a status survey was recommended to determine if listing was warranted. During May and June 2015, surveys were undertaken across the UGB to determine the current distribution of the species. A total of 71 sites were sampled, including all streams where the species was previously recorded, as well as semi-randomly selected streams, with 1-9 125 m long sites sampled per wadable stream. Physiochemical and physical habitat data (based on the Qualitative Habitat Evaluation Index, QHEI) were obtained at each site to determine abiotic factors that were associated with the presence of C. veteranus. Site detection or non-detection of C. veteranus and associated site covariates were modeled using logistic regression to determine covariates associated with the presence of the species. Cambarus veteranus was present in both the Pinnacle Creek and Clear Fork/Laurel Fork watersheds at 10 sites, but it was not observed in the remaining 61 sites. An additive effects model with conductivity and QHEI was selected as the best approximating model. Cambarus veteranus was associated with lower than average UGB conductivity (379 μS) and high (>80) QHEI score. All sites where C. veteranus was not detected had higher conductivity and/or lower QHEI scores.

Author Biography

Zachary Wade Dillard, West Liberty University

Undergraduate Student, Department of Natural Sciences and Mathematics, West Liberty University

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Published

2017-04-04

How to Cite

Dillard, Z. W., Welsh, S. A., Sadecky, N. M., Scott, R. K., & Loughman, Z. J. (2017). ENVIRONMENTAL ASSOCIATIONS OF CAMBARUS VETERANUS FAXON, 1914 (DECAPODA: CAMBARIDAE), AN IMPERILED WEST VIRGINIAN CRAYFISH. Proceedings of the West Virginia Academy of Science, 89(1). Retrieved from https://pwvas.org/index.php/pwvas/article/view/292

Issue

Section

Meeting Abstracts-Oral