This was a small exploratory trip focusing primarily on identifying samples of Poecilia to tie in with broad scale phylogeography and life history work in Poecilia butleri. This was a collaborative project I conducted with Dr. Jaime Zúñiga-Vega. Just the two of us were on this field trip. This project is funded by a SANT award through Brigham Young University.

The purpose of this field trip was to expand our collections of the Patagonian pencil catfish Hatcheria macrei for the PIRE Patagonia project. This trip is funded primarily through Brigham Young University, but is part of a larger project supported by the U.S. National Science Foundation.

Participants	Dr. Miguel Battini, Universidad Nacional del Comahue Dr. Juan Pablo Barriga, Universidad Nacional del Comahue Dr. Peter Unmack, Brigham Young University
Location	Rio Negro, Chubut and Santa Cruz provinces
Dates	March 31 - April 10, 2008
Work Done	Approximately 27 localities were sampled in the Negro, Santa Cruz and Deseado rivers on the Atlantic side as well as the Puelo, Yelcho, Pico and Baker rivers on the Pacific side. Various trout species were found at virtually every site, catfish were found at 17 localities, and perch and some lampreys were found at only one location each.

This trip focused on sampling the pencil catfish Trichomycterus aereolatus from the Maipo drainage and adjacent areas of central Chile. This trip is a follow-up based on phylogeographic results obtained from our initial work in this system. Participants on this Dr. Jerry Johnson, BYU undergraduate student Benjamin Groves, Alfonso Flores and a graduate student from the University of Concepción, Carlos Muñoz. This trip was funded through Brigham Young University, but is part of a larger project supported by the U.S. National Science Foundation (OISE 0530267). The molecular genetics data collection for this project is being conducted primarily by Ben Groves as part of his undergraduate ORCA project (funded in 2008).