{"id":{"repo_id":"unlv","oai_identifier":"oai:oasis.library.unlv.edu:rtds-1945"},"canonical_url":"https://search.dev.ndltd.org/etd/unlv/oai:oasis.library.unlv.edu:rtds-1945","repository":{"repo_id":"unlv","name":"University of Nevada - Las Vegas","base_url":"https://oasis.library.unlv.edu/do/oai/"},"display":{"title":"Effects of sodium chloride and sodium gluconate concentration on hydration behavior and water transport in the red-spotted toad, Bufo punctatus","abstract":"Toads hydrate from standing water or moist substrates by osmotic absorbtion across the ventral skin. On land toads adopt a distinctive posture called the water absorption response (WR) to maximize contact with the substrate and facilitate water absorption. Experiments using hydration behavior on moist substrates and rehydration rate in standing water or salt solutions in dehydrated Red-spotted toads (Bufo punctatus) were used to demonstrate that: (1) toads can distinguish among NaCl concentrations, (2) NaCl facilitates water uptake across the skin, and (3) transport of the chloride anion facilitates sodium uptake and affects sodium detection by the toad. The results of these studies also strongly suggest that general osmotic mechanisms as well as epithelial sodium channels function in chemosensation across the amphibian skin and that the ventral skin and the feet may have different roles in chemosensation.","abstract_html":"Toads hydrate from standing water or moist substrates by osmotic absorbtion across the ventral skin. On land toads adopt a distinctive posture called the water absorption response (WR) to maximize contact with the substrate and facilitate water absorption. Experiments using hydration behavior on moist substrates and rehydration rate in standing water or salt solutions in dehydrated Red-spotted toads (Bufo punctatus) were used to demonstrate that: (1) toads can distinguish among NaCl concentrations, (2) NaCl facilitates water uptake across the skin, and (3) transport of the chloride anion facilitates sodium uptake and affects sodium detection by the toad. The results of these studies also strongly suggest that general osmotic mechanisms as well as epithelial sodium channels function in chemosensation across the amphibian skin and that the ventral skin and the feet may have different roles in chemosensation.","abstract_has_math":false,"creators":["Sullivan, Polly Ann"],"institution":"University of Nevada, Las Vegas","degree_name":"Master of Science (MS)","degree_level":"Thesis","degree_discipline":"Biological Science","degree_department":null,"school":null,"contributors":["Karin Hoff"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1998,"date_issued":"1998-01-01T08:00:00Z","date_published":"1998-01-01T08:00:00Z","updated_at":"2026-07-24T05:24:53Z","subjects":[],"languages":[],"rights":["IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://oasis.library.unlv.edu/rtds/946"],"render_values":[{"text":"https://oasis.library.unlv.edu/rtds/946","href":"https://oasis.library.unlv.edu/rtds/946","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.25669/4p7d-wcap","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Karin Hoff"]},{"key":"dc:creator","label":"Author","values":["Sullivan, Polly Ann"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:publisher","label":"Institution","values":["University of Nevada, Las Vegas"]},{"key":"dc:type","label":"Dc Type","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biological Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MS)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.25669/4p7d-wcap","https://oasis.library.unlv.edu/rtds/946","https://oasis.library.unlv.edu/context/rtds/article/1945/viewcontent/uc.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Toads hydrate from standing water or moist substrates by osmotic absorbtion across the ventral skin. On land toads adopt a distinctive posture called the water absorption response (WR) to maximize contact with the substrate and facilitate water absorption. Experiments using hydration behavior on moist substrates and rehydration rate in standing water or salt solutions in dehydrated Red-spotted toads (Bufo punctatus) were used to demonstrate that: (1) toads can distinguish among NaCl concentrations, (2) NaCl facilitates water uptake across the skin, and (3) transport of the chloride anion facilitates sodium uptake and affects sodium detection by the toad. The results of these studies also strongly suggest that general osmotic mechanisms as well as epithelial sodium channels function in chemosensation across the amphibian skin and that the ventral skin and the feet may have different roles in chemosensation."]},{"key":"dc:format","label":"Dc Format","values":["pdf"]},{"key":"dc:title","label":"Title","values":["Effects of sodium chloride and sodium gluconate concentration on hydration behavior and water transport in the red-spotted toad, Bufo punctatus"]}]}],"canonical_facts":{"dc:contributor":["Karin Hoff"],"dc:creator":["Sullivan, Polly Ann"],"dc:description.abstract":["Toads hydrate from standing water or moist substrates by osmotic absorbtion across the ventral skin. On land toads adopt a distinctive posture called the water absorption response (WR) to maximize contact with the substrate and facilitate water absorption. Experiments using hydration behavior on moist substrates and rehydration rate in standing water or salt solutions in dehydrated Red-spotted toads (Bufo punctatus) were used to demonstrate that: (1) toads can distinguish among NaCl concentrations, (2) NaCl facilitates water uptake across the skin, and (3) transport of the chloride anion facilitates sodium uptake and affects sodium detection by the toad. The results of these studies also strongly suggest that general osmotic mechanisms as well as epithelial sodium channels function in chemosensation across the amphibian skin and that the ventral skin and the feet may have different roles in chemosensation."],"dc:format":["pdf"],"dc:identifier":["10.25669/4p7d-wcap","https://oasis.library.unlv.edu/rtds/946","https://oasis.library.unlv.edu/context/rtds/article/1945/viewcontent/uc.pdf"],"dc:publisher":["University of Nevada, Las Vegas"],"dc:rights":["IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Effects of sodium chloride and sodium gluconate concentration on hydration behavior and water transport in the red-spotted toad, Bufo punctatus"],"dc:type":["Text"],"thesis:degree_discipline":["Biological Science"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science (MS)"]},"updated_at":"2026-07-24T05:24:53Z"}