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The Kisatchie Painted Crayfish (Orconectes maletae) status in Louisiana

Fri, March 2, 2:30 to 4:00pm, Marie Hall Building, Corridor A

Abstract

The Kisatchie Painted Crayfish (Orconectes maletae) is an endemic species located within Louisiana and Texas. The species is listed as data deficient by the International Union for the Conservation of Nature. A petition for listing this species under the Endangered Species Act was filed in 2010. Due to the lack of data, the species has yet to be listed. After sampling four historical sites in Louisiana, the species was rare which indicates the increasing absence of the species in these sites. The Texas portion was found to be absent in 60% of its historical range. The goals of this experiment are as follows: 1) determine occupancy of this species in historical localities, 2) create a MAXENT ecological niche model for the Louisiana population and compare to the Texas population, 3) determine population dynamic estimates (reproduction information, sex ratio, and abundance) by performing field sampling, 4) perform mark and recapture using Visible Implant Elastomer Tags, 5) perform Restriction Site Associated DNA Sequencing to investigate population genetic variation across the species range and assemble an entire species genome. These data in their entirety will allow for the Unites States Fish and Wildlife Service to complete the species assessment. This will allow us to determine the causes of the apparent population decline observed across its range.

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