Photoperiod and Entrainment of Circadian Activity in the Antelope Ground Squirrel
The antelope ground squirrel (Ammosper mophilus leucurus) is highly diurnal, both in natural habitats and in a variety of laboratory light-dark schedules. The pattern results from the interaction of an endogenous rhythm and environmental parameters. Experimental manipulation of light-dark ratios sho...
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| Veröffentlicht in: | Bioscience 1973-09, Vol.23 (9), p.516-522 |
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| container_title | Bioscience |
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| creator | Kramm, Kenneth R. |
| description | The antelope ground squirrel (Ammosper mophilus leucurus) is highly diurnal, both in natural habitats and in a variety of laboratory light-dark schedules. The pattern results from the interaction of an endogenous rhythm and environmental parameters. Experimental manipulation of light-dark ratios showed that entrained phase angle is sensitive to changes in sunrise and sunset, and probably depends, at least in part, on the integral action of light. |
| doi_str_mv | 10.2307/1296478 |
| format | Article |
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The pattern results from the interaction of an endogenous rhythm and environmental parameters. Experimental manipulation of light-dark ratios showed that entrained phase angle is sensitive to changes in sunrise and sunset, and probably depends, at least in part, on the integral action of light.</description><subject>Animals</subject><subject>Antelopes</subject><subject>Bird nesting</subject><subject>Ecophysiology</subject><subject>Ground squirrels</subject><subject>Luminous intensity</subject><subject>Phase angle</subject><subject>Photoperiod</subject><subject>Rodents</subject><subject>Squirrels</subject><issn>0006-3568</issn><issn>1525-3244</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1973</creationdate><recordtype>article</recordtype><recordid>eNp1kE9LwzAchoMoWKf4FXIQPFXzp0naYylzCgMV9Vx-SxOW0SUzyYR9eyvb1dPLC8_zHl6Ebil5YJyoR8oaWan6DBVUMFFyVlXnqCCEyJILWV-iq5Q2U6UVbwr0_rYOOexMdGHA4Ac89zmC81vjMw4Wdy5qGBx43Orsflw-YOdxXhvc-mzGycSLGPaT-PG9dzGa8RpdWBiTuTnlDH09zT-753L5unjp2mWpmWC5rNnKSMEMCG4GDVZpJSSohnFKNYHGrIRStVWMcGgE1ZQTTsAAA-BMDpbP0P1xV8eQUjS230W3hXjoKen_nuhPT0zk3ZHcpBziv9gvQqVbpw</recordid><startdate>19730901</startdate><enddate>19730901</enddate><creator>Kramm, Kenneth R.</creator><general>American Institute of Biological Sciences</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19730901</creationdate><title>Photoperiod and Entrainment of Circadian Activity in the Antelope Ground Squirrel</title><author>Kramm, Kenneth R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c252t-82be652ea53edcaf7c756a792311c0a9eb5778f7203a951c13030aea2aa326df3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1973</creationdate><topic>Animals</topic><topic>Antelopes</topic><topic>Bird nesting</topic><topic>Ecophysiology</topic><topic>Ground squirrels</topic><topic>Luminous intensity</topic><topic>Phase angle</topic><topic>Photoperiod</topic><topic>Rodents</topic><topic>Squirrels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kramm, Kenneth R.</creatorcontrib><collection>CrossRef</collection><jtitle>Bioscience</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kramm, Kenneth R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photoperiod and Entrainment of Circadian Activity in the Antelope Ground Squirrel</atitle><jtitle>Bioscience</jtitle><date>1973-09-01</date><risdate>1973</risdate><volume>23</volume><issue>9</issue><spage>516</spage><epage>522</epage><pages>516-522</pages><issn>0006-3568</issn><eissn>1525-3244</eissn><abstract>The antelope ground squirrel (Ammosper mophilus leucurus) is highly diurnal, both in natural habitats and in a variety of laboratory light-dark schedules. The pattern results from the interaction of an endogenous rhythm and environmental parameters. Experimental manipulation of light-dark ratios showed that entrained phase angle is sensitive to changes in sunrise and sunset, and probably depends, at least in part, on the integral action of light.</abstract><pub>American Institute of Biological Sciences</pub><doi>10.2307/1296478</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0006-3568 |
| ispartof | Bioscience, 1973-09, Vol.23 (9), p.516-522 |
| issn | 0006-3568 1525-3244 |
| language | eng |
| recordid | cdi_crossref_primary_10_2307_1296478 |
| source | Oxford University Press Journals Digital Archive Legacy; JSTOR Archive Collection A-Z Listing |
| subjects | Animals Antelopes Bird nesting Ecophysiology Ground squirrels Luminous intensity Phase angle Photoperiod Rodents Squirrels |
| title | Photoperiod and Entrainment of Circadian Activity in the Antelope Ground Squirrel |
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