Signal Crayfish


Invasive Crayfish Project Update – February 9, 2018

We are hiring seasonal Crayfish Technicians for summer 2018. Please see this link for more information and how to apply. 

In August 2017, Sun’aq Tribe of Kodiak was awarded funding by USFWS Tribal Wildlife Grant (TWG) Program. The two-year project, titled “Distribution, Movement and Diet of Invasive Crayfish Populations in Buskin River Watershed on Kodiak Island, Alaska” focuses on characterizing the distribution (snorkel/scuba diving surveys), movement (radio tagging) and diet (stable isotope analyses) of the Signal Crayfish population within Buskin Watershed.

In 2016, STK received funding from the Bureau of Indian Affairs Invasive Species Program to survey for Signal Crayfish within the Buskin Watershed utilizing kick seining and electrofishing methods. During the 2016 and 2017 field seasons, 378 and 708 Signal Crayfish  (Pacifastacus leniusculus) were captured and removed from the watershed, respectively. Total length and carapace length measurements were taken for each specimen, along with sex, species and GPS coordinates. This project verified that an invasive population is thriving within Buskin Watershed, and that electrofishing and snorkeling proved to be the most effective capture methods.

The general public has been trapping, snorkeling and scuba diving for crayfish in Buskin Watershed for sport and subsistence purposes and with great success.

Juvenile crayfish captured during electrofishing at Buskin Lake.

For more information see this presentation or look at the Year 1 Report at (


 Check out this video of the 2016 field season!

For more videos, visit the Sun’aq Tribe of Kodiak Vimeo page.