{"id":{"repo_id":"mo-state","oai_identifier":"oai:bearworks.missouristate.edu:theses-2223"},"canonical_url":"https://search.dev.ndltd.org/etd/mo-state/oai:bearworks.missouristate.edu:theses-2223","repository":{"repo_id":"mo-state","name":"Missouri State University","base_url":"https://bearworks.missouristate.edu/do/oai/"},"display":{"title":"The Effect of Temperature and Digestion on Metabolism in Black Rat Snakes, Elaphe Obsoleta Obsoleta","abstract":"Temperature is critical to the understanding of snake energetics due to the strong thermal dependencies of metabolism. To identify sources of metabolic variation in Elaphe obsoleta obsoleta, I investigated the effects of mass, body temperature, and digestion on oxygen consumption at 20, 25, and 30°C. Mass-specific standard metabolic rates (SMR) for rat snakes increased as a function of temperature. SMR did not change due to time of day effects. Slopes for 20 and 30°C treatments did not significantly differ. There was not a significant difference in O₂ consumption from 20 to 25°C. There was a significant difference in preferred temperature range of rat snakes. Digestive efficiency ranged from 25.6-75.7%. The mean metabolic rate during digestion was approximately four times as high as the mean SMR for relative meal sizes of 8-16% at 25°C. The amount of energy from the meal needed for oxygen consumption was 42.2 ± 1.42%. SMR of E. o. obsoleta resemble values for general snake equations. Preferred temperature range (23.3-33.1°C) is similar compared to northern populations, and thermal sensitivity (Q₁₀) is within the normal range for snakes (2-3).","abstract_html":"Temperature is critical to the understanding of snake energetics due to the strong thermal dependencies of metabolism. To identify sources of metabolic variation in Elaphe obsoleta obsoleta, I investigated the effects of mass, body temperature, and digestion on oxygen consumption at 20, 25, and 30°C. Mass-specific standard metabolic rates (SMR) for rat snakes increased as a function of temperature. SMR did not change due to time of day effects. Slopes for 20 and 30°C treatments did not significantly differ. There was not a significant difference in O₂ consumption from 20 to 25°C. There was a significant difference in preferred temperature range of rat snakes. Digestive efficiency ranged from 25.6-75.7%. The mean metabolic rate during digestion was approximately four times as high as the mean SMR for relative meal sizes of 8-16% at 25°C. The amount of energy from the meal needed for oxygen consumption was 42.2 ± 1.42%. SMR of E. o. obsoleta resemble values for general snake equations. Preferred temperature range (23.3-33.1°C) is similar compared to northern populations, and thermal sensitivity (Q₁₀) is within the normal range for snakes (2-3).","abstract_has_math":false,"creators":["Brennan, April M."],"institution":null,"degree_name":"Master of Science in Biology","degree_level":"Masters","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":["Brian Greene"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2004,"date_issued":"2004-05-01T07:00:00Z","date_published":"2004-05-01T07:00:00Z","updated_at":"2026-07-24T03:16:17Z","subjects":["metabolism","temperature","digestion","rat snake","Elaphe o. obsoleta","Biology"],"languages":[],"rights":["© April M. Brennan"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://bearworks.missouristate.edu/theses/1222","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Brian Greene"]},{"key":"dc:creator","label":"Author","values":["Brennan, April M."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Biology"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["metabolism","temperature","digestion","rat snake","Elaphe o. obsoleta","Biology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["© April M. Brennan"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://bearworks.missouristate.edu/theses/1222"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Temperature is critical to the understanding of snake energetics due to the strong thermal dependencies of metabolism. To identify sources of metabolic variation in Elaphe obsoleta obsoleta, I investigated the effects of mass, body temperature, and digestion on oxygen consumption at 20, 25, and 30°C. Mass-specific standard metabolic rates (SMR) for rat snakes increased as a function of temperature. SMR did not change due to time of day effects. Slopes for 20 and 30°C treatments did not significantly differ. There was not a significant difference in O₂ consumption from 20 to 25°C. There was a significant difference in preferred temperature range of rat snakes. Digestive efficiency ranged from 25.6-75.7%. The mean metabolic rate during digestion was approximately four times as high as the mean SMR for relative meal sizes of 8-16% at 25°C. The amount of energy from the meal needed for oxygen consumption was 42.2 ± 1.42%. SMR of E. o. obsoleta resemble values for general snake equations. Preferred temperature range (23.3-33.1°C) is similar compared to northern populations, and thermal sensitivity (Q₁₀) is within the normal range for snakes (2-3)."]},{"key":"dc:title","label":"Title","values":["The Effect of Temperature and Digestion on Metabolism in Black Rat Snakes, Elaphe Obsoleta Obsoleta"]}]}],"canonical_facts":{"dc:contributor":["Brian Greene"],"dc:creator":["Brennan, April M."],"dc:description.abstract":["Temperature is critical to the understanding of snake energetics due to the strong thermal dependencies of metabolism. To identify sources of metabolic variation in Elaphe obsoleta obsoleta, I investigated the effects of mass, body temperature, and digestion on oxygen consumption at 20, 25, and 30°C. Mass-specific standard metabolic rates (SMR) for rat snakes increased as a function of temperature. SMR did not change due to time of day effects. Slopes for 20 and 30°C treatments did not significantly differ. There was not a significant difference in O₂ consumption from 20 to 25°C. There was a significant difference in preferred temperature range of rat snakes. Digestive efficiency ranged from 25.6-75.7%. The mean metabolic rate during digestion was approximately four times as high as the mean SMR for relative meal sizes of 8-16% at 25°C. The amount of energy from the meal needed for oxygen consumption was 42.2 ± 1.42%. SMR of E. o. obsoleta resemble values for general snake equations. Preferred temperature range (23.3-33.1°C) is similar compared to northern populations, and thermal sensitivity (Q₁₀) is within the normal range for snakes (2-3)."],"dc:identifier":["https://bearworks.missouristate.edu/theses/1222"],"dc:rights":["© April M. Brennan"],"dc:subject":["metabolism","temperature","digestion","rat snake","Elaphe o. obsoleta","Biology"],"dc:title":["The Effect of Temperature and Digestion on Metabolism in Black Rat Snakes, Elaphe Obsoleta Obsoleta"],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science in Biology"]},"updated_at":"2026-07-24T03:16:17Z"}