Evolution of non-kin cooperation: social assortment by cooperative phenotype in guppies

Josefine Bohr Brask, Darren P. Croft, Mathew Edenbrow, Richard James, Bronwyn H. Bleakley, Indar W. Ramnarine, Robert J. P. Heathcote, Charles R. Tyler, Patrick B. Hamilton, Torben Dabelsteen, Safi K. Darden