Date of Award
5-20-2009
Document Type
Thesis
Degree Name
Environmental Sciences, MS
First Advisor
Tanja McKay
Committee Members
Alan Christian; Argelia Lorence; John Harris
Call Number
LD 251 .A566t 2009 A83
Abstract
To better understand the migration and spatial patterns, population dynamics, population genetics, and paternity in Villosa iris, I conducted studies in the Spring (SR) and South Fork Spring (SFSR) rivers in 2006 and 2007. Population estimates were 166 ± 32 and 381 ± 37 individuals for SFSR1 and SR1, respectively. Home range and migration rates were small and male and female spatial patterns corresponded with spawning patterns, with more males found upstream of non-gravid females. Population genetic structuring was low between all populations (Fst= 0.028), genetic diversity was lower in the SFSR (Fst= 0.012) than in the SR (Fst= 0.022), and genetic diversity did not increase with geographic distance. The number of fathers per brood ranged from 6 to 14 and the highest paternal contribution to one brood was 14 of 19 offspring, suggesting that Villosa iris exhibits a promiscuous mating system.
Rights Management
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Asher, Allison Marie, "Spatial Patterns, Population Genetics, And Multiple Paternity of the Freshwater Mussel Villosa Iris, (Lea 1829)" (2009). Student Theses and Dissertations. 1005.
https://arch.astate.edu/all-etd/1005
