{"id":{"repo_id":"mo-state","oai_identifier":"oai:bearworks.missouristate.edu:theses-1999"},"canonical_url":"https://search.dev.ndltd.org/etd/mo-state/oai:bearworks.missouristate.edu:theses-1999","repository":{"repo_id":"mo-state","name":"Missouri State University","base_url":"https://bearworks.missouristate.edu/do/oai/"},"display":{"title":"The Effects Of Dissolved Oxygen Content Of Water On Blood Ph, Pco4, Po4 And Rocking Activity For Cryptobranchus Alleganiensis","abstract":"The effects of dissolved O₂ content of water on in vivo blood pH, pCO₂, pO₂ and rocking activity were measured for Cryptobranchus alleganiensis. Measurements were taken at 100%, 75%, 50%, 25%, 20%, 15%, 10% and 0% saturation levels while temperature was held constant at 12°C. Results indicate that reduction of dissolved O₂ content of water does not have a significant effect on blood pH, pCO₂, pO₂ until O₂ saturation of water is lowered to 20%. Rocking activity increased significantly as the O₂ saturation was decreased from 100% to 25%. Furthermore, as O₂ saturation of water was lowered to approximately 0%, rocking activity decreased, blood pCO₂ increased and blood pH and pO₂ decreased significantly. There appeared to be a relationship between rocking versus non-rocking activity and the ability to maintain stable blood pO₂ levels in water less than 100% saturated with oxygen. Furthermore, rocking activity did not appear to be a response to respiratory stress, per se; but could be more appropriately termed a response to potential stress on the respiratory functions of the blood.","abstract_html":"The effects of dissolved O₂ content of water on in vivo blood pH, pCO₂, pO₂ and rocking activity were measured for Cryptobranchus alleganiensis. Measurements were taken at 100%, 75%, 50%, 25%, 20%, 15%, 10% and 0% saturation levels while temperature was held constant at 12°C. Results indicate that reduction of dissolved O₂ content of water does not have a significant effect on blood pH, pCO₂, pO₂ until O₂ saturation of water is lowered to 20%. Rocking activity increased significantly as the O₂ saturation was decreased from 100% to 25%. Furthermore, as O₂ saturation of water was lowered to approximately 0%, rocking activity decreased, blood pCO₂ increased and blood pH and pO₂ decreased significantly. There appeared to be a relationship between rocking versus non-rocking activity and the ability to maintain stable blood pO₂ levels in water less than 100% saturated with oxygen. Furthermore, rocking activity did not appear to be a response to respiratory stress, per se; but could be more appropriately termed a response to potential stress on the respiratory functions of the blood.","abstract_has_math":false,"creators":["Harlan, Richard A."],"institution":null,"degree_name":"Master of Science in Biology","degree_level":"Masters","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":["Robert Wilkinson"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1978,"date_issued":"1978-05-01T07:00:00Z","date_published":"1978-05-01T07:00:00Z","updated_at":"2026-07-24T03:16:00Z","subjects":["Biology"],"languages":[],"rights":["© Richard A. Harlan"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://bearworks.missouristate.edu/theses/998","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Robert Wilkinson"]},{"key":"dc:creator","label":"Author","values":["Harlan, Richard A."]}]},{"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":["Biology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["© Richard A. Harlan"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://bearworks.missouristate.edu/theses/998"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The effects of dissolved O₂ content of water on in vivo blood pH, pCO₂, pO₂ and rocking activity were measured for Cryptobranchus alleganiensis. Measurements were taken at 100%, 75%, 50%, 25%, 20%, 15%, 10% and 0% saturation levels while temperature was held constant at 12°C. Results indicate that reduction of dissolved O₂ content of water does not have a significant effect on blood pH, pCO₂, pO₂ until O₂ saturation of water is lowered to 20%. Rocking activity increased significantly as the O₂ saturation was decreased from 100% to 25%. Furthermore, as O₂ saturation of water was lowered to approximately 0%, rocking activity decreased, blood pCO₂ increased and blood pH and pO₂ decreased significantly. There appeared to be a relationship between rocking versus non-rocking activity and the ability to maintain stable blood pO₂ levels in water less than 100% saturated with oxygen. Furthermore, rocking activity did not appear to be a response to respiratory stress, per se; but could be more appropriately termed a response to potential stress on the respiratory functions of the blood."]},{"key":"dc:title","label":"Title","values":["The Effects Of Dissolved Oxygen Content Of Water On Blood Ph, Pco4, Po4 And Rocking Activity For Cryptobranchus Alleganiensis"]}]}],"canonical_facts":{"dc:contributor":["Robert Wilkinson"],"dc:creator":["Harlan, Richard A."],"dc:description.abstract":["The effects of dissolved O₂ content of water on in vivo blood pH, pCO₂, pO₂ and rocking activity were measured for Cryptobranchus alleganiensis. Measurements were taken at 100%, 75%, 50%, 25%, 20%, 15%, 10% and 0% saturation levels while temperature was held constant at 12°C. Results indicate that reduction of dissolved O₂ content of water does not have a significant effect on blood pH, pCO₂, pO₂ until O₂ saturation of water is lowered to 20%. Rocking activity increased significantly as the O₂ saturation was decreased from 100% to 25%. Furthermore, as O₂ saturation of water was lowered to approximately 0%, rocking activity decreased, blood pCO₂ increased and blood pH and pO₂ decreased significantly. There appeared to be a relationship between rocking versus non-rocking activity and the ability to maintain stable blood pO₂ levels in water less than 100% saturated with oxygen. Furthermore, rocking activity did not appear to be a response to respiratory stress, per se; but could be more appropriately termed a response to potential stress on the respiratory functions of the blood."],"dc:identifier":["https://bearworks.missouristate.edu/theses/998"],"dc:rights":["© Richard A. Harlan"],"dc:subject":["Biology"],"dc:title":["The Effects Of Dissolved Oxygen Content Of Water On Blood Ph, Pco4, Po4 And Rocking Activity For Cryptobranchus Alleganiensis"],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science in Biology"]},"updated_at":"2026-07-24T03:16:00Z"}