Author Type

Graduate Student

Date of Award

Spring 4-30-2026

Document Type

Thesis

Publication Status

Version of Record

Submission Date

May 2026

Department

Marine Science and Oceanography

College Granting Degree

Charles E. Schmidt College of Science

Department Granting Degree

Marine Science and Oceanography

Degree Name

Master of Science (MS)

Thesis/Dissertation Advisor [Chair]

Paul S. Wills

Abstract

Genomics research can inform selective breeding programs to improve broodstock and seedstock quality for the U.S. warmwater marine finfish aquaculture industry. Florida pompano Trachinotus carolinus serves as a model species for the industry due to its commercial value and ability to spawn in captivity. This study examined a growth abnormality observed in commercially produced juveniles in partnership with Aquaco Farms LLC. Twenty fish were collected, culled, and euthanized by Aquaco staff, then classified into two head types: “normal” and “concaved”. Eleven morphological measurements were recorded before and after freezing to assess head variation and storage effects. DNA from pectoral fin clips was sequenced using RAD-seq to assess genetic variation. Morphological analysis showed overall similarity between head types, though a few cranial traits differed significantly, and freezing had no effect. Genetic analysis showed overlapping PCA clusters and similar heterozygosity, suggesting developmental or environmental influences rather than distinct genetic differences.

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