{"help":"Return the metadata of a dataset (package) and its resources. :param id: the id or name of the dataset :type id: string","success":true,"result":[{"id":"b39600ab-8d07-4f6b-b752-6f8017dd1eba","name":"thesis-swimming-\u2018thin-air\u2019-evaluating-combination-hypoxic-and-thermal-stress-additive-or","title":"Thesis | Swimming in \u2018Thin Air\u2019: Evaluating the Combination of Hypoxic and Thermal Stress as an Additive or Synergistic Effect on Redband Trout (Oncorhynchus mykiss gairdneri)","author":"Carlie Sharpes","author_email":"bcsmall@uidaho.edu","maintainer":"RCDS Data Repository","maintainer_email":"rcds-web@uidaho.edu","notes":"Climate warming causes both increases in extreme environmental water temperature and decreased dissolved oxygen (DO) concentrations (hypoxia) that induce stress in salmonid fishes including trout. Redband trout (Oncorhynchus mykiss gairdneri) have divergent ecotypes corresponding to a diverse range of thermal conditions from warm desert to cold montane ecosystems. Additionally, trout can alter their physiological phenotype to acclimate to environmental stressors. I predicted that warm acclimation would increase thermal tolerance, increase cardiac performance, and decrease hypoxia tolerance relative to the cooler acclimation temperature. Further, I anticipated that the impact of hypoxic and thermal stress would be lowest for the desert ecotype. The combination of hypoxia and acute temperature increase stress was postulated to have a synergistic effect on trout performance. Trout were collected from wild populations and acclimated to 21\u00b0C (near upper pejus temperature) and 15\u00b0C (within thermal optimum range) to model the desert and cold montane habitats, respectively, using two metric units. First, the time at loss of equilibrium (LOE) was recorded as a proxy for hypoxia tolerance where DO was decreased to ~12% saturation in an experimental tank. Second, cardiac phenotypic response, quantified by heart rate (\u0192H), measured using an electrocardiogram (ECG) during acute temperature increase with 50% DO saturation (hypoxia) or full DO saturation (normoxia). Warm acclimated trout had significantly shorter time to LOE, and thus inferior hypoxia tolerance relative to the cold- acclimated trout (p \u2264 0.001). A significant interaction between ecotype and acclimation temperature took place at the 21\u00b0C acclimation temperature where the cool montane ecotype had significantly shorter time to LOE relative to the desert ecotype (p \u2264 0.05). Warm acclimated fish exhibited a significantly higher temperature at peak heart rate (Tpeak), and thus a superior thermal tolerance than cold-acclimated trout (p \u2264 0.001). As expected, the Tpeak was significantly greater for trout subjected to normoxia rather than hypoxia (p \u2264 0.05). No significant difference was detected for Tpeak response between ecotypes. The warm-acclimated trout displayed significantly lower \u0192H at temperature increments 15-20\u00b0C (p \u2264 0.001) and 21- 22\u00b0C (p \u2264 0.05) relative to the cold- acclimated trout. Greater \u0192H values indicate greater bioenergetic cost. As Tpeak increased with warm acclimation temperature, \u0192H had decreased, indicating that thermal tolerance can vary inversely with cardiac performance. The \u0192H values with both hypoxic and thermal stressors combined were not greater than the sum of \u0192H for each isolated stressor, thus the combination of hypoxic and thermal stress was seen to have an additive rather than synergistic effect on trout performance.","url":"https:\/\/dkan.nkn.uidaho.edu\/dataset\/thesis-swimming-%E2%80%98thin-air%E2%80%99-evaluating-combination-hypoxic-and-thermal-stress-additive-or","state":"Active","log_message":"Edited by awchild.","private":true,"revision_timestamp":"Thu, 07\/07\/2022 - 09:33","metadata_created":"Thu, 07\/07\/2022 - 09:30","metadata_modified":"Thu, 07\/07\/2022 - 09:33","creator_user_id":"6cc16f2c-77c2-4d12-ac06-56bbb86b535b","type":"Dataset","tags":[{"id":"5f859265-7d19-47f5-a15e-0e22846d565a","vocabulary_id":"2","name":"adaptation"},{"id":"38be2134-64e3-4400-a5dc-15ebe508077e","vocabulary_id":"2","name":"adaptive potential"},{"id":"3c4b7b04-c8c8-46c4-bc38-4a5ad5c6e57a","vocabulary_id":"2","name":"climate change"},{"id":"2ddf177c-15c4-4755-a442-4d656453e890","vocabulary_id":"2","name":"common garden"},{"id":"425f965a-f839-486d-be20-95827298c8c0","vocabulary_id":"2","name":"ecology"},{"id":"4ff8f12f-597f-460d-98ea-6650f2124e30","vocabulary_id":"2","name":"environmental change"},{"id":"435edef7-8f56-48e1-851a-1231e1537ef4","vocabulary_id":"2","name":"wildlife"},{"id":"7ce278ec-34b7-430d-a793-3d07ec64605e","vocabulary_id":"2","name":"normoxia"},{"id":"fdf5da47-4de2-4c9f-8aac-d8a6887ee6df","vocabulary_id":"2","name":"dissolved oxygen"},{"id":"c1d6ab35-8a41-42d9-8aaf-737fc5dff98e","vocabulary_id":"2","name":"hypoxia"},{"id":"8a3cb3e8-d649-48b5-a8f1-09a8ee450d51","vocabulary_id":"2","name":"ecotype"}],"groups":[{"description":"\u003Cp\u003ESince 1889, the University of Idaho has provided motivated students with a transformative higher education experience that prepares them to solve real-world problems and achieve success in their lives and careers.\u003C\/p\u003E\n\u003Cp\u003ELearn more at \u003Ca href=\u0022https:\/\/www.uidaho.edu\u0022\u003Ehttps:\/\/www.uidaho.edu\u003C\/a\u003E\u003C\/p\u003E\n","id":"89a02fc8-c98e-44bb-9d3e-2d3d0849fbca","image_display_url":"https:\/\/dkan.nkn.uidaho.edu\/sites\/default\/files\/UI_Main_horizontal_4c.jpg","title":"University of Idaho","name":"group\/university-idaho"},{"description":"\u003Cp\u003EThe primary objective of Idaho EPSCoR is to stimulate research in niche areas that can become fully competitive in the disciplinary and multidisciplinary research programs of the National Science Foundation and other relevant agencies. Idaho EPSCoR provides support for sustainable increases in Research and Development capacity and advances science and engineering capabilities within the state. \u003C\/p\u003E\n\u003Cp\u003EVisit them at \u003Ca href=\u0022https:\/\/www.idahoepscor.org\u0022\u003Ehttps:\/\/www.idahoepscor.org\u003C\/a\u003E\u003C\/p\u003E\n","id":"e696b239-9ecb-412e-b032-03a75b2b9fd6","image_display_url":"https:\/\/dkan.nkn.uidaho.edu\/sites\/default\/files\/Idaho_epscor_logo_no_white_background.png","title":"Idaho EPSCoR","name":"group\/idaho-epscor"},{"description":"\u003Cp\u003EGEM3 is an NSF EPSCoR research program seeking to understand how genetic diversity and phenotypic plasticity affect species response to environmental change, shaping both population response and adaptive capacity.\u003C\/p\u003E\n\u003Cp\u003EVisit them at: \u003Ca href=\u0022https:\/\/www.idahogem3.org\u0022\u003Ehttps:\/\/www.idahogem3.org\u003C\/a\u003E\u003C\/p\u003E\n","id":"1812a312-11a4-492d-960b-9a78b4abfe0c","image_display_url":"https:\/\/dkan.nkn.uidaho.edu\/sites\/default\/files\/GEM3_nov5_logo.png","title":"EPSCoR GEM3","name":"group\/epscor-gem3"}]}]} Error | RCDS Data Repository

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