Lecture 17 BIO220

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: s occurring after the rescue 3 Texas Pumas i ntroduced 13/03/2013 Black Line: FL Panthers have significantly lower s ur vivorship -Crosses have better sur vivorship! D ifferent colours on the graph represent p roducts bet ween Texas and FL Swedish adders Trends in response to translocation m.eb.com Isolated population in Sweden Heterozygosity increases WT Backcross F1 & admixed panthers 19 Johnson et al. 2010, Science 329: 1641 1645 20 stopsnakes.com - Hybrids are dominating, wild type decreasing -Texas genes are dominating WHY? -Individuals with these gens have better sur vivorship Introduction improves recruitment Fragmentation and Prairie Chickens • Fragmentation and elimination of prairie habitat • Individuals in surviving habitats are more closely related to each other •20 male adders introduced to isolated population •Population density and recruitment increase • Population too isolated for immigration to play a role •MHC diversity increases Madsen et al. 1999, Nature 402, 34 35 21 -Allee effect: social mating behavio...
View Full Document

This document was uploaded on 01/27/2014.

Ask a homework question - tutors are online