Guyana - Google Maps.jpg

Guyana

South America

 

Fall 2016

In attendance: Ben Sandkam, Felix Breden, Judith Mank, Godfrey Bourne, Fran Breden

The purpose of this trip was to secure high molecular weight DNA from Poecilia parae, Poecilia picta, Poecilia reticulata. We are using 10X Genomics micro droplet based sequencing methods to sequence the genomes of these species.

This expedition has already resulted in one paper in PNAS focusing on Poecilia picta and I am currently using this data to discover how supergenes were formed in Poecilia parae.

 

Summer 2010

In attendance: Ben Sandkam, Felix Breden, Godfrey Bourne, Fran Breden* (undergraduate)

The purpose of this trip was to study the visual system of Poecilia parae, Poecilia picta, Poecilia reticulata which are three closely related species of freshwater fish that all school together in the shallow streams of coastal Guyana.


We found that visual systems differed more across different populations of the same species, than across species within the same location. While in Guyana we stayed at CEIBA biological station and traveled to many populations.

 
Trinidad and Tobago - Google Maps.jpg

Trinidad

South America

 

Fall 2016

In attendance: Ben Sandkam, Felix Breden, Judith Mank, Godfrey Bourne, Fran Breden

The purpose of this trip was to secure high molecular weight DNA from Poecilia reticulata. We are using 10X Genomics micro droplet based sequencing methods to sequence genomes and compare recombination rates between populations.

 

Spring 2015

In attendance: Ben Sandkam, Felix Breden, Matt Taves

The purpose of this trip was to compare differences in color vision and color preference across populations of guppies.

 

Spring 2011

In attendance: Ben Sandkam, Felix Breden, Fran Breden* (undergraduate)

The purpose of this trip was to test for variation in color vision of guppies across populations, days and time of day in two watersheds.