GENETIC ANALYSES ON THE DEEP-SEA SHRIMP ACANTHEPHYRA PELAGICA IN THE NORTH-WEST ATLANTIC.

This study examine the population structure, and mating system in Acanthephyra pelagica. Samples were obtained in different areas of the Northwest Atlantic with emphasis in the Sable Gully. Ten microsatellite loci were developed and used for this research. I evaluated generational, temporal and spat...

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Bibliographic Details
Main Author: Jorquera - Paegelow, Erika
Other Authors: Department of Biology, Master of Science, David Innes, Hal Whitehead, Paul Bentzen, Daniel Ruzzante, Ellen Kenchington, Not Applicable, Yes
Language:English
Published: 2014
Subjects:
Acanthephyra pelagica
Micronekton
Microsatellite
Multiple Paternity
Northwest Atlantic
Genetics
Population Structure
Sable Gully
North West Atlantic
Online Access:http://hdl.handle.net/10222/52495
Description
Summary:This study examine the population structure, and mating system in Acanthephyra pelagica. Samples were obtained in different areas of the Northwest Atlantic with emphasis in the Sable Gully. Ten microsatellite loci were developed and used for this research. I evaluated generational, temporal and spatial differences. Cohorts were determined using length measurements. Cohort information provided information to infer the reproductive cycle of the species. The existence of multiple paternity was also investigated. Four cohorts were found in each year of sampling showing a four years life span and seasonal spawning. The population was found to be panmictic among locations spatial at scales of less than 1500 km. Significant genetic structure and isolation by distance was found at a higher spatial scale. Multiple paternity was found to be prevalent in the population with 2-4 fathers in each brood. The lack of genetic structure in the population suggests high dispersal and connectivity.

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