Origin and diversity of North European sheep breeds
7th World Congress on Genetics Applied to Livestock Production, August 19-23, 2002, Montpellier, FranceSession 26. Management of genetic diversity Abstract of N° 26-37
WEITZMAN'S APPROACH AND COMPONENTS OF DIVERSITY IN NORTHERN EUROPEAN SHEEP BREEDS.
I. Grigaliunaite1, M. Tapio, L.-E. Holm, S. Jeppsson,
J. Kantanen, I. Miceikiene, I. Olsaker, H. Viinalass and E. Eythorsdottir.
1 Lithuanian Veterinary Academy, Tilzes 18, LT-3022 Kaunas, Lithuania.
Weitzman's marginal loss of diversity and the contribution to total diversity
described by Petit et al. (1998) were applied to a set of 32 sheep breeds
from Northern Europe that were genotyped for 22 microsatellite markers.
Conservation values given by the methods for individual populations were
compared. Weitzman's diversity values for populations were positively
correlated with divergence components and negatively with within population
components of Petit et al. (1998). The comparison of the Weitzman marginal
loss of diversity and the contribution to total diversity defined by Petit
et al. (1998) were only weakly positively correlated. The results suggest
that setting conservation priorities for the studied sheep breeds only
with the Weitzman approach can be misleading, if intrabreed genetic variation
is ignored.
Created by ThEP and EE Edited by Emma Eythorsdottir for the North SheD group.
Agricultural Research Institute of Iceland.