Dissertation/Thesis Abstract

A comparative study of genetic diversities among exploited flatfishes of the California Slope with emphasis on Dover sole (Microstomus pacificus)
by Cleveland, Joseph David, M.S., California State University, Long Beach, 2014, 127; 1591593
Abstract (Summary)

Dover sole (Microstomus pacificus) is a commercially important, slope dwelling flatfish of the northeast Pacific coast. Its genetic diversity at the mitochondrial DNA control region appears substantially lower than another commercially important flatfish, Pacific sanddab (Citharichthys sordidus). I designed a comparative study along depth and latitudinal gradients using five flatfishes and one brotula. In the control region's left domain, genetic diversity of six species trended lower with increasing habitat depth at Palos Verdes: shallow species had high genetic diversity and deep dwelling species (ex. Dover sole) had low genetic diversity. This diversity gradient may follow decreases in mass specific metabolic rates as Dover sole grow, invade the oxygen minimum zone and assume higher tissue water content. The left domain from 64 Dover sole specimens was compared across 4 latitudinal locations. Genetic diversity trended higher with increasing latitude, possibly due to cold water emergence as biomass shift shallower with increasing latitude.

Indexing (document details)
Advisor: Wilson, Raymond R., Jr.
Commitee: Allen, Bengt J., Archie, James W.
School: California State University, Long Beach
Department: Biological Sciences
School Location: United States -- California
Source: MAI 54/05M(E), Masters Abstracts International
Source Type: DISSERTATION
Subjects: Molecular biology, Genetics, Aquatic sciences
Keywords: California, Microstomus pacificus
Publication Number: 1591593
ISBN: 978-1-321-83390-4
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