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The Effect of Changing the Gaseous Diffusion Coefficient on the Mass Loss Pattern of Hyalophora cecropia Pupae
The importance of gas phase diffusion in insect gas exchange remains unclear. The role of diffusion in gas exchange of developing Hyalophora cecropia pupae was examined by altering the gaseous diffusion coefficient in the breathing mixture. Gaseous diffusion coefficients were manipulated by substitu...
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| Published in: | Physiological and biochemical zoology 2000-07, Vol.73 (4), p.488-493 |
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| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-c2196-4bc22cd664683a251dc553de28bb8edfb94659c91e996c63e42fcd89326003c63 |
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| cites | cdi_FETCH-LOGICAL-c2196-4bc22cd664683a251dc553de28bb8edfb94659c91e996c63e42fcd89326003c63 |
| container_end_page | 493 |
| container_issue | 4 |
| container_start_page | 488 |
| container_title | Physiological and biochemical zoology |
| container_volume | 73 |
| creator | Birchard, Geoffrey F. |
| description | The importance of gas phase diffusion in insect gas exchange
remains unclear. The role of diffusion in gas exchange of
developing Hyalophora cecropia pupae was examined by altering
the gaseous diffusion coefficient in the breathing mixture. Gaseous
diffusion coefficients were manipulated by substituting helium or sulfur
hexafluoride for the nitrogen usually present in air. Sensitive mass loss
recordings were employed to monitor gas exchange activity. Mass loss
recordings showed a two-phase cycle, open and closed-flutter.
Mass loss rates during the open and closed-flutter periods were not
altered in proportion to the changes induced in the rate of
diffusion. Open-phase duration was inversely and proportionally
related to the diffusion coefficient. These results are consistent with
changes in spiracle resistance or convective flow during the open period in
response to a change in the diffusion coefficient. In addition, they
indicate a significant gas phase diffusive resistance within the pupal
tracheal system. This previously unreported gas phase resistance appears to
be a major determinant of the duration of the open period and thus of
overall water loss rates in these pupae. |
| doi_str_mv | 10.1086/317736 |
| format | article |
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remains unclear. The role of diffusion in gas exchange of
developing Hyalophora cecropia pupae was examined by altering
the gaseous diffusion coefficient in the breathing mixture. Gaseous
diffusion coefficients were manipulated by substituting helium or sulfur
hexafluoride for the nitrogen usually present in air. Sensitive mass loss
recordings were employed to monitor gas exchange activity. Mass loss
recordings showed a two-phase cycle, open and closed-flutter.
Mass loss rates during the open and closed-flutter periods were not
altered in proportion to the changes induced in the rate of
diffusion. Open-phase duration was inversely and proportionally
related to the diffusion coefficient. These results are consistent with
changes in spiracle resistance or convective flow during the open period in
response to a change in the diffusion coefficient. In addition, they
indicate a significant gas phase diffusive resistance within the pupal
tracheal system. This previously unreported gas phase resistance appears to
be a major determinant of the duration of the open period and thus of
overall water loss rates in these pupae.</description><identifier>ISSN: 1522-2152</identifier><identifier>EISSN: 1537-5293</identifier><identifier>DOI: 10.1086/317736</identifier><identifier>PMID: 11009402</identifier><language>eng</language><publisher>United States: The University of Chicago Press</publisher><subject>Animals ; Body Water ; Diffusion ; Gases ; Moths - physiology ; Pupa - physiology ; Respiratory Transport</subject><ispartof>Physiological and biochemical zoology, 2000-07, Vol.73 (4), p.488-493</ispartof><rights>2000 by The University of Chicago. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2196-4bc22cd664683a251dc553de28bb8edfb94659c91e996c63e42fcd89326003c63</citedby><cites>FETCH-LOGICAL-c2196-4bc22cd664683a251dc553de28bb8edfb94659c91e996c63e42fcd89326003c63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11009402$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Birchard, Geoffrey F.</creatorcontrib><title>The Effect of Changing the Gaseous Diffusion Coefficient on the Mass Loss Pattern of Hyalophora cecropia Pupae</title><title>Physiological and biochemical zoology</title><addtitle>Physiol Biochem Zool</addtitle><description>The importance of gas phase diffusion in insect gas exchange
remains unclear. The role of diffusion in gas exchange of
developing Hyalophora cecropia pupae was examined by altering
the gaseous diffusion coefficient in the breathing mixture. Gaseous
diffusion coefficients were manipulated by substituting helium or sulfur
hexafluoride for the nitrogen usually present in air. Sensitive mass loss
recordings were employed to monitor gas exchange activity. Mass loss
recordings showed a two-phase cycle, open and closed-flutter.
Mass loss rates during the open and closed-flutter periods were not
altered in proportion to the changes induced in the rate of
diffusion. Open-phase duration was inversely and proportionally
related to the diffusion coefficient. These results are consistent with
changes in spiracle resistance or convective flow during the open period in
response to a change in the diffusion coefficient. In addition, they
indicate a significant gas phase diffusive resistance within the pupal
tracheal system. This previously unreported gas phase resistance appears to
be a major determinant of the duration of the open period and thus of
overall water loss rates in these pupae.</description><subject>Animals</subject><subject>Body Water</subject><subject>Diffusion</subject><subject>Gases</subject><subject>Moths - physiology</subject><subject>Pupa - physiology</subject><subject>Respiratory Transport</subject><issn>1522-2152</issn><issn>1537-5293</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNpFkEtPwzAQhC0EouX1E5APiFvAj8SJj6iUglRED3COHGfdumrtYCcH_j0uLepldzX6NNoZhG4oeaCkEo-cliUXJ2hMC15mBZP8dHczlrE0R-gixjUhlFZEnqMRpYTInLAxcp8rwFNjQPfYGzxZKbe0bon7JM9UBD9E_GyNGaL1Dk88GGO1BZdo9we9qxjx3KexUH0Pwe1sXn_UxncrHxTWoIPvrMKLoVNwhc6M2kS4PuxL9PUy_Zy8ZvOP2dvkaZ5pRqXI8kYzplshclFxxQra6qLgLbCqaSpoTSNzUUgtKUgptOCQM6PbSnImCOFJuET3e98u-O8BYl9vbdSw2Si3i1SXjMkqL-URTF_GGMDUXbBbFX5qSupds_W-2QTeHhyHZgvtETtUmYC7PTDoldVq6bsAMdZrPwSXov77_AIUXH7Q</recordid><startdate>200007</startdate><enddate>200007</enddate><creator>Birchard, Geoffrey F.</creator><general>The University of Chicago Press</general><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>7X8</scope></search><sort><creationdate>200007</creationdate><title>The Effect of Changing the Gaseous Diffusion Coefficient on the Mass Loss Pattern of Hyalophora cecropia Pupae</title><author>Birchard, Geoffrey F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2196-4bc22cd664683a251dc553de28bb8edfb94659c91e996c63e42fcd89326003c63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Animals</topic><topic>Body Water</topic><topic>Diffusion</topic><topic>Gases</topic><topic>Moths - physiology</topic><topic>Pupa - physiology</topic><topic>Respiratory Transport</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Birchard, Geoffrey F.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Physiological and biochemical zoology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Birchard, Geoffrey F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Effect of Changing the Gaseous Diffusion Coefficient on the Mass Loss Pattern of Hyalophora cecropia Pupae</atitle><jtitle>Physiological and biochemical zoology</jtitle><addtitle>Physiol Biochem Zool</addtitle><date>2000-07</date><risdate>2000</risdate><volume>73</volume><issue>4</issue><spage>488</spage><epage>493</epage><pages>488-493</pages><issn>1522-2152</issn><eissn>1537-5293</eissn><abstract>The importance of gas phase diffusion in insect gas exchange
remains unclear. The role of diffusion in gas exchange of
developing Hyalophora cecropia pupae was examined by altering
the gaseous diffusion coefficient in the breathing mixture. Gaseous
diffusion coefficients were manipulated by substituting helium or sulfur
hexafluoride for the nitrogen usually present in air. Sensitive mass loss
recordings were employed to monitor gas exchange activity. Mass loss
recordings showed a two-phase cycle, open and closed-flutter.
Mass loss rates during the open and closed-flutter periods were not
altered in proportion to the changes induced in the rate of
diffusion. Open-phase duration was inversely and proportionally
related to the diffusion coefficient. These results are consistent with
changes in spiracle resistance or convective flow during the open period in
response to a change in the diffusion coefficient. In addition, they
indicate a significant gas phase diffusive resistance within the pupal
tracheal system. This previously unreported gas phase resistance appears to
be a major determinant of the duration of the open period and thus of
overall water loss rates in these pupae.</abstract><cop>United States</cop><pub>The University of Chicago Press</pub><pmid>11009402</pmid><doi>10.1086/317736</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1522-2152 |
| ispartof | Physiological and biochemical zoology, 2000-07, Vol.73 (4), p.488-493 |
| issn | 1522-2152 1537-5293 |
| language | eng |
| recordid | cdi_uchicagopress_journals_317736 |
| source | JSTOR Archival Journals and Primary Sources Collection |
| subjects | Animals Body Water Diffusion Gases Moths - physiology Pupa - physiology Respiratory Transport |
| title | The Effect of Changing the Gaseous Diffusion Coefficient on the Mass Loss Pattern of Hyalophora cecropia Pupae |
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