Thermal gradients impact fishes differently, due to variations in ecological niches and physiological adaptations. I assessed the effects of temperature on Largemouth Bass (Micropterus nigricans) and Atlantic Cod (Gadus morhua) using data from peer-reviewed journals, state records, and fisheries agencies. For Largemouth Bass, I analyzed the relationships between air temperature (MATmin°C, MAT24hr°C, and MATmax°C), and growth parameters including maximum length and weight, growth rate (K), longevity, and total length-at-ages 3, 5, and 8 years (TLAge3,5,8), using least squares regression. Significant correlations were found between all temperature and growth metrics. Positive correlations were found between the thermal indices and TLAge3,5,8, growth rate, and maximum size but negative relationships were found between the thermal indices and longevity. In Atlantic Cod, analyses were limited by insufficient data on older age classes, geographic coverage, and environmental variables. These limitations prevented analyses and highlighted the need for management strategies that protect older individuals.
","abstract_html":"<p>Thermal gradients impact fishes differently, due to variations in ecological niches and physiological adaptations. I assessed the effects of temperature on Largemouth Bass (Micropterus nigricans) and Atlantic Cod (Gadus morhua) using data from peer-reviewed journals, state records, and fisheries agencies. For Largemouth Bass, I analyzed the relationships between air temperature (MAT<sub>min</sub>°C, MAT24hr°C, and MAT<sub>max</sub>°C), and growth parameters including maximum length and weight, growth rate (K), longevity, and total length-at-ages 3, 5, and 8 years (TLAge<sub>3,5,8</sub>), using least squares regression. Significant correlations were found between all temperature and growth metrics. Positive correlations were found between the thermal indices and TLAge<sub>3,5,8</sub>, growth rate, and maximum size but negative relationships were found between the thermal indices and longevity. In Atlantic Cod, analyses were limited by insufficient data on older age classes, geographic coverage, and environmental variables. These limitations prevented analyses and highlighted the need for management strategies that protect older individuals.</p>","abstract_has_math":false,"creators":["Hall, Whitney"],"institution":null,"degree_name":"Master of Science","degree_level":"Thesis","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":["Dr. Michael Newbrey","Dr. Jennifer Newnrey","Ashley Desensi"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2025,"date_issued":"2025-01-01T08:00:00Z","date_published":"2025-01-01T08:00:00Z","updated_at":"2026-07-24T01:45:08Z","subjects":["Largemouth Bass","Micropterus nigricans","Atlantic Cod","Gadus morhua","Thermal Gradients","Climate Change","Longevity","Growth Rate","Aquaculture and Fisheries","Biology"],"languages":["English"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://csuepress.columbusstate.edu/theses_dissertations/685","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Dr. Michael Newbrey","Dr. Jennifer Newnrey","Ashley Desensi"]},{"key":"dc:creator","label":"Author","values":["Hall, Whitney"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Largemouth Bass","Micropterus nigricans","Atlantic Cod","Gadus morhua","Thermal Gradients","Climate Change","Longevity","Growth Rate","Aquaculture and Fisheries","Biology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://csuepress.columbusstate.edu/theses_dissertations/685"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Thermal gradients impact fishes differently, due to variations in ecological niches and physiological adaptations. I assessed the effects of temperature on Largemouth Bass (Micropterus nigricans) and Atlantic Cod (Gadus morhua) using data from peer-reviewed journals, state records, and fisheries agencies. For Largemouth Bass, I analyzed the relationships between air temperature (MATmin°C, MAT24hr°C, and MATmax°C), and growth parameters including maximum length and weight, growth rate (K), longevity, and total length-at-ages 3, 5, and 8 years (TLAge3,5,8), using least squares regression. Significant correlations were found between all temperature and growth metrics. Positive correlations were found between the thermal indices and TLAge3,5,8, growth rate, and maximum size but negative relationships were found between the thermal indices and longevity. In Atlantic Cod, analyses were limited by insufficient data on older age classes, geographic coverage, and environmental variables. These limitations prevented analyses and highlighted the need for management strategies that protect older individuals.
"]},{"key":"dc:title","label":"Title","values":["The Comparative Effects of a Thermal Gradient on the Age and Growth Characteristics of Largemouth Bass (Micropterus Nigricans), and Atlantic Cod (Gadus Morhua)"]}]}],"canonical_facts":{"dc:contributor":["Dr. Michael Newbrey","Dr. Jennifer Newnrey","Ashley Desensi"],"dc:creator":["Hall, Whitney"],"dc:description.abstract":["Thermal gradients impact fishes differently, due to variations in ecological niches and physiological adaptations. I assessed the effects of temperature on Largemouth Bass (Micropterus nigricans) and Atlantic Cod (Gadus morhua) using data from peer-reviewed journals, state records, and fisheries agencies. For Largemouth Bass, I analyzed the relationships between air temperature (MATmin°C, MAT24hr°C, and MATmax°C), and growth parameters including maximum length and weight, growth rate (K), longevity, and total length-at-ages 3, 5, and 8 years (TLAge3,5,8), using least squares regression. Significant correlations were found between all temperature and growth metrics. Positive correlations were found between the thermal indices and TLAge3,5,8, growth rate, and maximum size but negative relationships were found between the thermal indices and longevity. In Atlantic Cod, analyses were limited by insufficient data on older age classes, geographic coverage, and environmental variables. These limitations prevented analyses and highlighted the need for management strategies that protect older individuals.
"],"dc:identifier":["https://csuepress.columbusstate.edu/theses_dissertations/685"],"dc:language":["English"],"dc:subject":["Largemouth Bass","Micropterus nigricans","Atlantic Cod","Gadus morhua","Thermal Gradients","Climate Change","Longevity","Growth Rate","Aquaculture and Fisheries","Biology"],"dc:title":["The Comparative Effects of a Thermal Gradient on the Age and Growth Characteristics of Largemouth Bass (Micropterus Nigricans), and Atlantic Cod (Gadus Morhua)"],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science"]},"updated_at":"2026-07-24T01:45:08Z"}