Presentation on theme: "Project Number : 2.5.9 Project Title: Evaluate Physical Methods to Disrupt Asian Carp Spawning Behavior and Decrease Egg Viability Reuben Goforth (PI)"— Presentation transcript:
Project Number : 2.5.9 Project Title: Evaluate Physical Methods to Disrupt Asian Carp Spawning Behavior and Decrease Egg Viability Reuben Goforth (PI) & Sam Nutile (GRA) Department of Forestry & Natural Resources Purdue University
Introduction and Objectives >180 aquatic invasive sp. (AIS) introduced to Great Lakes; additional introductions likely Available AIS control tools limited; chemical agents non-selective Physical factors (e.g., electricity, sonication, aeration) may disrupt embryo development & may enhance susceptibility to chemical agents Critical stages for physical disruption need to be determined We will construct a test system to determine whether Asian carp eggs/embryos are susceptible to physical disruption
Current Knowledge Electrical fields have been shown to disrupt development of native fish sp. Bioengineering industry uses electricity to create temporary pores in cell membranes Exposure system being developed to expose Asian carp eggs & embryos at various developmental stages to varying electrical fields
Current Knowledge (continued) Multiple sp. being cultured to test exposure system prior to expected availability of Hypophthalmichys sp. eggs in late spring 2011 Danio rerio Pimephales promelas Carassius auratus Rhinichthys obtusus
Future Plans Construct additional exposure systems (Apr-11) Conduct electrical field experiments on Asian carp sp. & concurrently spawning native species (e.g., Moxostoma sp., Scaphirhynchus platorynchus, Cycleptus elongatus) using calibrated exposure systems (May-Jul 11) Conduct multiple control factor trials (e.g., electricity X low dose rotenone; May-Aug 11) Assess potential for in situ application of physical disruption & combined exposure
Technological or Other Hurdles Minor equipment/exposure system setbacks; nearly rectified at this stage Ready availability of carp eggs for exposure trials when needed!!! Need for mobile exposure unit to facilitate availability of carp eggs for experimental trials???
Data Gaps Incomplete knowledge of in situ effectiveness Incomplete knowledge of the most effective locations for in situ implementation Incomplete knowledge of the full range of potential ecosystem impacts of in situ applications ?????
Other AC Work in Goforth Lab Movements of AC in Wabash River, IN Reuben Goforth (PI) and Alison Coulter (GRA) Tag 100 AC using Vemco V16-4L acoustic tags Monitor movements over 350 river miles Evaluate where spawning taking place in Wabash Collaboration with Dr. Andrea Liceaga (Dept of Food Science, Purdue University)