ARI Project: 02-02-028 | Funding Round: Round 3 (2001-2002)  | Start Date: 11/15/2001  | Status: Completed

Control of Tadpole Shrimp by Methyl Farnesoate Inhibition of Reproduction

ARI Member Campus: California State University, Fresno
Research Focus Area: Biotechnology
Project Personnel: Director: Tsukimura, Brian, Department of Biology California State University, Fresno
Co-Investigator: Mutters, R.G.
Cooperator: Koda, Ross, Koda Farms, Inc.
ARI Allocation: $39,800.00
Match Donors: $8,000.00 - Koda Farms, Inc.
$1,800.00 - Rice Research Board
$2,500.00 - Rice Research Board
$5,750.00 - University of California
Total Funding: $57,850.00

Project Objective: To develop a baseline standard for an alternative (organic) method to control tadpole shrimp, an invasive pest in central California rice fields. The method features the use of a hormone, methyl farnesoate (MF), in feed to diminish the reproductive capacity of the shrimp.

Project Abstract: Rice is a highly-valued crop grown in the northern San Joaquin Valley of California. Like most crops, it has its share of specific insect and pest problems. One significant rice pest is the tadpole shrimp, which breed rapidly in flood-irrigated fields and damage the rice seedlings. While application of copper sulfate can control shrimp populations, the material’s use is raising environmental concerns. As an innovative alternative to copper sulfate, Fresno State biology professor Brian Tsukimura is exploring the use of a natural hormone for biologically controlling shrimp populations. The hormone, methyl farnesoate, is believed to inhibit reproductive development. Tsukimura will test the effectiveness of the hormone and also develop methods for introducing it to the shrimp.

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