This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. Comparative genomic analysis is used to study the evolution of immune system genes in response to differences in life history strategies, specifically differences in suites of parasites experienced by landlocked versus sea run fish. Sea run Atlantic salmon encounter parasites in two habitats, while landlocked fish only encounter parasites in one habitat. It has been hypothesized that greater genetic diversity of immune system genes should exist in populations experiencing more parasites. This project will assess genetic variation in the Major Histocompatibility Complex (MHC) Class II B gene in populations of sea run and landlocked Atlantic salmon. It will assess the type of selection acting on the MHC Class II B gene and identify corresponding amino acid changes in the Antigen Binding Site (ABS) of the MHC Class II B gene. This will provide information on the amount of functional diversity in each population, enabling a correlation between functional diversity and parasite exposure. This study will be expanded to other immune system genes: MHC Class-II A, MHC Class-I, and Transporter Associated with Antigen Processing (TAP). This will allow multilocus genotyping of fish, and determination of the existence of unique combinations of immune system genes. The goal is to determine if exposure to different numbers of parasites correlates with levels of MHC polymorphism. This investigation of MHC diversity will help understand how an organism's immune system can be exploited for better protection against parasites.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Exploratory Grants (P20)
Project #
5P20RR016463-11
Application #
8360306
Study Section
Special Emphasis Panel (ZRR1-RI-4 (01))
Project Start
2011-05-01
Project End
2012-04-30
Budget Start
2011-05-01
Budget End
2012-04-30
Support Year
11
Fiscal Year
2011
Total Cost
$140,567
Indirect Cost
Name
Mount Desert Island Biological Lab
Department
Type
DUNS #
077470003
City
Salsbury Cove
State
ME
Country
United States
Zip Code
04672
Hahn, Mark E; Karchner, Sibel I; Merson, Rebeka R (2017) Diversity as Opportunity: Insights from 600 Million Years of AHR Evolution. Curr Opin Toxicol 2:58-71
Ariyachet, Chaiyaboot; Bei├čel, Christian; Li, Xiang et al. (2017) Post-translational modification directs nuclear and hyphal tip localization of Candida albicans mRNA-binding protein Slr1. Mol Microbiol 104:499-519
Nickerson, Chelsea A; Brown, Alexandra L; Yu, Waylin et al. (2017) Prenatal choline supplementation attenuates MK-801-induced deficits in memory, motor function, and hippocampal plasticity in adult male rats. Neuroscience 361:116-128
Wirth, Peter; Yu, Waylin; Kimball, Amanda L et al. (2017) New method to induce mild traumatic brain injury in rodents produces differential outcomes in female and male Sprague Dawley rats. J Neurosci Methods 290:133-144
Mangiamele, Lisa A; Gomez, Julia R; Curtis, Nancy J et al. (2017) GPER/GPR30, a membrane estrogen receptor, is expressed in the brain and retina of a social fish (Carassius auratus) and colocalizes with isotocin. J Comp Neurol 525:252-270
Dickinson, Patsy S; Qu, Xuan; Stanhope, Meredith E (2016) Neuropeptide modulation of pattern-generating systems in crustaceans: comparative studies and approaches. Curr Opin Neurobiol 41:149-157
Palopoli, Michael F; Peden, Colin; Woo, Caitlin et al. (2015) Natural and experimental evolution of sexual conflict within Caenorhabditis nematodes. BMC Evol Biol 15:93
Dickinson, Patsy S; Calkins, Andrew; Stevens, Jake S (2015) Related neuropeptides use different balances of unitary mechanisms to modulate the cardiac neuromuscular system in the American lobster, Homarus americanus. J Neurophysiol 113:856-70
Dickinson, Patsy S; Sreekrishnan, Anirudh; Kwiatkowski, Molly A et al. (2015) Distinct or shared actions of peptide family isoforms: I. Peptide-specific actions of pyrokinins in the lobster cardiac neuromuscular system. J Exp Biol 218:2892-904
McCall, Nora; Mahadevia, Darshini; Corriveau, Jennifer A et al. (2015) Adult emotionality and neural plasticity as a function of adolescent nutrient supplementation in male rats. Pharmacol Biochem Behav 132:125-135

Showing the most recent 10 out of 244 publications