Respiratory and digestive responses of postprandial Dungeness crabs, Cancer magister, and blue crabs, Callinectes sapidus, during hyposaline exposure
Respiratory responses and gastric processing were examined during hyposaline exposure in two crab species of differing osmoregulatory ability. The efficient osmoregulator, Callinectes sapidus, displayed an immediate increase in oxygen uptake when exposed to low salinity in isolation. In contrast, th...
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| Veröffentlicht in: | Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology Biochemical, systemic, and environmental physiology, 2010-02, Vol.180 (2), p.189-198 |
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| creator | Curtis, Daniel L McGaw, Iain J |
| description | Respiratory responses and gastric processing were examined during hyposaline exposure in two crab species of differing osmoregulatory ability. The efficient osmoregulator, Callinectes sapidus, displayed an immediate increase in oxygen uptake when exposed to low salinity in isolation. In contrast, the weak osmoregulator, Cancer magister, showed no change in oxygen uptake upon acute exposure ( |
| doi_str_mv | 10.1007/s00360-009-0403-z |
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The efficient osmoregulator, Callinectes sapidus, displayed an immediate increase in oxygen uptake when exposed to low salinity in isolation. In contrast, the weak osmoregulator, Cancer magister, showed no change in oxygen uptake upon acute exposure (<6 h), but slight increases in oxygen uptake tended to occur over longer time scales (12-24 h). These changes were likely attributable to an increase in avoidance activity after 6 h hyposaline exposure. Following feeding in 100% SW, oxygen uptake doubled for both species and remained elevated for 15 h. When postprandial crabs were exposed to low salinities, C. sapidus were able to sum the demands of osmoregulation and digestion. Thus, gastric processes continued unabated in low salinity. Conversely, postprandial C. magister prioritized responses to low salinity over those of digestion, resulting in a decrease in oxygen uptake when exposed to low salinity. This decrease in oxygen uptake corresponded to a reduction in the rate of contraction of the pyloric stomach and a subsequent doubling of gastric evacuation time. The current study is one of the few to illustrate how summation or prioritization of competing physiological systems is manifested in digestive processes.</description><identifier>ISSN: 0174-1578</identifier><identifier>EISSN: 1432-136X</identifier><identifier>DOI: 10.1007/s00360-009-0403-z</identifier><identifier>PMID: 19714337</identifier><language>eng</language><publisher>Berlin/Heidelberg: Berlin/Heidelberg : Springer-Verlag</publisher><subject>Animal Physiology ; Animals ; Biochemistry ; Biomedical and Life Sciences ; Biomedicine ; Brachyura - physiology ; Crustaceans ; Digestive System Physiological Phenomena ; Female ; Human Physiology ; Life Sciences ; Male ; Original Paper ; Osmoregulation ; Oxygen ; Oxygen Consumption - physiology ; Oxygen uptake ; Postprandial Period - physiology ; Respiratory Physiological Phenomena ; Salinity ; Species Specificity ; Water-Electrolyte Balance - physiology ; Zoology</subject><ispartof>Journal of comparative physiology. 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B, Biochemical, systemic, and environmental physiology</title><addtitle>J Comp Physiol B</addtitle><addtitle>J Comp Physiol B</addtitle><description>Respiratory responses and gastric processing were examined during hyposaline exposure in two crab species of differing osmoregulatory ability. The efficient osmoregulator, Callinectes sapidus, displayed an immediate increase in oxygen uptake when exposed to low salinity in isolation. In contrast, the weak osmoregulator, Cancer magister, showed no change in oxygen uptake upon acute exposure (<6 h), but slight increases in oxygen uptake tended to occur over longer time scales (12-24 h). These changes were likely attributable to an increase in avoidance activity after 6 h hyposaline exposure. Following feeding in 100% SW, oxygen uptake doubled for both species and remained elevated for 15 h. When postprandial crabs were exposed to low salinities, C. sapidus were able to sum the demands of osmoregulation and digestion. Thus, gastric processes continued unabated in low salinity. Conversely, postprandial C. magister prioritized responses to low salinity over those of digestion, resulting in a decrease in oxygen uptake when exposed to low salinity. This decrease in oxygen uptake corresponded to a reduction in the rate of contraction of the pyloric stomach and a subsequent doubling of gastric evacuation time. The current study is one of the few to illustrate how summation or prioritization of competing physiological systems is manifested in digestive processes.</description><subject>Animal Physiology</subject><subject>Animals</subject><subject>Biochemistry</subject><subject>Biomedical and Life Sciences</subject><subject>Biomedicine</subject><subject>Brachyura - physiology</subject><subject>Crustaceans</subject><subject>Digestive System Physiological Phenomena</subject><subject>Female</subject><subject>Human Physiology</subject><subject>Life Sciences</subject><subject>Male</subject><subject>Original Paper</subject><subject>Osmoregulation</subject><subject>Oxygen</subject><subject>Oxygen Consumption - physiology</subject><subject>Oxygen uptake</subject><subject>Postprandial Period - physiology</subject><subject>Respiratory Physiological Phenomena</subject><subject>Salinity</subject><subject>Species Specificity</subject><subject>Water-Electrolyte Balance - physiology</subject><subject>Zoology</subject><issn>0174-1578</issn><issn>1432-136X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9ks9u1DAQxi0EotvCA3ABiwuXBvxvY-dYLRSQKiEBlbhZjj0bXGXj4EkQ2_fgffGSlVbiwMkjz2--mfFnQp5x9pozpt8gY7JmFWNNxRST1f0DsuJKiorL-ttDsmJcq4qvtTkj54h3jDHFjXpMznijCyf1ivz-DDjG7KaU99QNgYbYAU7xJ9BcMmlAQJq2dEw4jbkA0fX07Tx0MAAi9dm1eEk3bvCQ6c51ESfIl3-V2n6GE9D3cQA_FTV0YwxzuQxzjkNHv--LuDukKfwq4ZzhCXm0dT3C0-N5QW6v333dfKhuPr3_uLm6qbxs1FRx7QVwLnUjdYlbr4PX3gUjwAmopfGm1U4pAcrwtg1MGKNDXa_L9jVr1vKCvFp0x5x-zGVvu4vooe_dAGlGq6VshBG1KOTLf8i7NOehDGeFMIxLWesC8QXyOSFm2Noxx53Le8uZPThmF8dsccweHLP3peb5UXhudxBOFUeLCiAWAMfDc0E-df6f6oulaOuSdV2OaG-_iDJm-RKNWmsl_wD8Jqza</recordid><startdate>20100201</startdate><enddate>20100201</enddate><creator>Curtis, Daniel L</creator><creator>McGaw, Iain J</creator><general>Berlin/Heidelberg : Springer-Verlag</general><general>Springer-Verlag</general><general>Springer Nature B.V</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7QR</scope><scope>7SS</scope><scope>7T5</scope><scope>7TK</scope><scope>7TM</scope><scope>7U7</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7P</scope><scope>P64</scope><scope>PATMY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>7X8</scope></search><sort><creationdate>20100201</creationdate><title>Respiratory and digestive responses of postprandial Dungeness crabs, Cancer magister, and blue crabs, Callinectes sapidus, during hyposaline exposure</title><author>Curtis, Daniel L ; McGaw, Iain J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-17c2e113793717cbc7dc7cad82ea2e638c8b7a442e481bbd02887d66571460953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Animal Physiology</topic><topic>Animals</topic><topic>Biochemistry</topic><topic>Biomedical and Life Sciences</topic><topic>Biomedicine</topic><topic>Brachyura - physiology</topic><topic>Crustaceans</topic><topic>Digestive System Physiological Phenomena</topic><topic>Female</topic><topic>Human Physiology</topic><topic>Life Sciences</topic><topic>Male</topic><topic>Original Paper</topic><topic>Osmoregulation</topic><topic>Oxygen</topic><topic>Oxygen Consumption - physiology</topic><topic>Oxygen uptake</topic><topic>Postprandial Period - physiology</topic><topic>Respiratory Physiological Phenomena</topic><topic>Salinity</topic><topic>Species Specificity</topic><topic>Water-Electrolyte Balance - physiology</topic><topic>Zoology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Curtis, Daniel L</creatorcontrib><creatorcontrib>McGaw, Iain J</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Immunology Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection (ProQuest)</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Curtis, Daniel L</au><au>McGaw, Iain J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Respiratory and digestive responses of postprandial Dungeness crabs, Cancer magister, and blue crabs, Callinectes sapidus, during hyposaline exposure</atitle><jtitle>Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology</jtitle><stitle>J Comp Physiol B</stitle><addtitle>J Comp Physiol B</addtitle><date>2010-02-01</date><risdate>2010</risdate><volume>180</volume><issue>2</issue><spage>189</spage><epage>198</epage><pages>189-198</pages><issn>0174-1578</issn><eissn>1432-136X</eissn><abstract>Respiratory responses and gastric processing were examined during hyposaline exposure in two crab species of differing osmoregulatory ability. The efficient osmoregulator, Callinectes sapidus, displayed an immediate increase in oxygen uptake when exposed to low salinity in isolation. In contrast, the weak osmoregulator, Cancer magister, showed no change in oxygen uptake upon acute exposure (<6 h), but slight increases in oxygen uptake tended to occur over longer time scales (12-24 h). These changes were likely attributable to an increase in avoidance activity after 6 h hyposaline exposure. Following feeding in 100% SW, oxygen uptake doubled for both species and remained elevated for 15 h. When postprandial crabs were exposed to low salinities, C. sapidus were able to sum the demands of osmoregulation and digestion. Thus, gastric processes continued unabated in low salinity. Conversely, postprandial C. magister prioritized responses to low salinity over those of digestion, resulting in a decrease in oxygen uptake when exposed to low salinity. This decrease in oxygen uptake corresponded to a reduction in the rate of contraction of the pyloric stomach and a subsequent doubling of gastric evacuation time. The current study is one of the few to illustrate how summation or prioritization of competing physiological systems is manifested in digestive processes.</abstract><cop>Berlin/Heidelberg</cop><pub>Berlin/Heidelberg : Springer-Verlag</pub><pmid>19714337</pmid><doi>10.1007/s00360-009-0403-z</doi><tpages>10</tpages></addata></record> |
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| ispartof | Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology, 2010-02, Vol.180 (2), p.189-198 |
| issn | 0174-1578 1432-136X |
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| subjects | Animal Physiology Animals Biochemistry Biomedical and Life Sciences Biomedicine Brachyura - physiology Crustaceans Digestive System Physiological Phenomena Female Human Physiology Life Sciences Male Original Paper Osmoregulation Oxygen Oxygen Consumption - physiology Oxygen uptake Postprandial Period - physiology Respiratory Physiological Phenomena Salinity Species Specificity Water-Electrolyte Balance - physiology Zoology |
| title | Respiratory and digestive responses of postprandial Dungeness crabs, Cancer magister, and blue crabs, Callinectes sapidus, during hyposaline exposure |
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