Effects of feeding and light cycles on activity rhythms of maternally isolated rat pups
Motor activity of infant rat pups was measured continuously between days 3 and 18 of postnatal age. Mother-reared rats on a 12:12 LD cycle exhibited significant rhythmic activity in the circadian range as early as day 5 of postnatal age. Some of the pups reared in isolation from maternal and sibling...
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| Veröffentlicht in: | Physiology & behavior 1987, Vol.39 (2), p.169-181 |
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| container_title | Physiology & behavior |
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| creator | Anderson, Veanne N. Smith, Grant K. |
| description | Motor activity of infant rat pups was measured continuously between days 3 and 18 of postnatal age. Mother-reared rats on a 12:12 LD cycle exhibited significant rhythmic activity in the circadian range as early as day 5 of postnatal age. Some of the pups reared in isolation from maternal and sibling contact and kept on 12:12 LD cycles, feeding cycles, or combinations of feeding, temperature, and LD cycles also showed rhythmic activity but it was less persistent and of a lower amplitude than the rhythms of the mother-reared group. In the isolated rat pups nocturnal partitioning of activity was strengthened in the presence of both a light-dark cycle and a feeding cycle but only when the feeding resembled more natural nursing rhythms. In animals kept on constant light and a feeding cycle, activity occurred slightly more often during the 12-hr interval of decreased food intake. The addition of a temperature cycle—cooler nocturnal temperature—decreased the proportions of nocturnal motor activity. These results indicate that feeding and light-dark cycles may contribute to the synchronization of activity rhythms during the early postnatal period. |
| doi_str_mv | 10.1016/0031-9384(87)90006-0 |
| format | Article |
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Mother-reared rats on a 12:12 LD cycle exhibited significant rhythmic activity in the circadian range as early as day 5 of postnatal age. Some of the pups reared in isolation from maternal and sibling contact and kept on 12:12 LD cycles, feeding cycles, or combinations of feeding, temperature, and LD cycles also showed rhythmic activity but it was less persistent and of a lower amplitude than the rhythms of the mother-reared group. In the isolated rat pups nocturnal partitioning of activity was strengthened in the presence of both a light-dark cycle and a feeding cycle but only when the feeding resembled more natural nursing rhythms. In animals kept on constant light and a feeding cycle, activity occurred slightly more often during the 12-hr interval of decreased food intake. The addition of a temperature cycle—cooler nocturnal temperature—decreased the proportions of nocturnal motor activity. These results indicate that feeding and light-dark cycles may contribute to the synchronization of activity rhythms during the early postnatal period.</description><identifier>ISSN: 0031-9384</identifier><identifier>EISSN: 1873-507X</identifier><identifier>DOI: 10.1016/0031-9384(87)90006-0</identifier><identifier>PMID: 3575450</identifier><language>eng</language><publisher>Cambridge: Elsevier Inc</publisher><subject>Activity Cycles ; Activity levels. Psychomotricity ; ALIMENTACION DE LOS ANIMALES ; ALIMENTATION DES ANIMAUX ; ANIMAL FEEDING ; Animals ; Biological and medical sciences ; CACHORRO ; CHIOT ; Circadian Rhythm ; Eating ; Feeding cycle ; Fundamental and applied biological sciences. Psychology ; Homeostasis ; Light ; LIGHT REGIMES ; Maternal Deprivation ; Maternal isolation ; MATERNIDAD ; MATERNITE ; MATERNITY ; Nocturnal activity ; Ontogeny ; Periodicity ; Psychology. Psychoanalysis. Psychiatry ; Psychology. Psychophysiology ; Psychomotor activities ; PUPPIES ; RAT ; RATA ; RATS ; Rats, Inbred Strains ; REGIME LUMINEUX ; REGIMENES DE LUZ ; Rhythms ; TEMPERATURA ; TEMPERATURE</subject><ispartof>Physiology & behavior, 1987, Vol.39 (2), p.169-181</ispartof><rights>1987</rights><rights>1987 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c436t-bb66980ea03ea8d6e4adc6ecb1d830a6beb7b00ec90b09f7961db8d5a0a9ef253</citedby><cites>FETCH-LOGICAL-c436t-bb66980ea03ea8d6e4adc6ecb1d830a6beb7b00ec90b09f7961db8d5a0a9ef253</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0031-9384(87)90006-0$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,4024,27923,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=8237195$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/3575450$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Anderson, Veanne N.</creatorcontrib><creatorcontrib>Smith, Grant K.</creatorcontrib><title>Effects of feeding and light cycles on activity rhythms of maternally isolated rat pups</title><title>Physiology & behavior</title><addtitle>Physiol Behav</addtitle><description>Motor activity of infant rat pups was measured continuously between days 3 and 18 of postnatal age. Mother-reared rats on a 12:12 LD cycle exhibited significant rhythmic activity in the circadian range as early as day 5 of postnatal age. Some of the pups reared in isolation from maternal and sibling contact and kept on 12:12 LD cycles, feeding cycles, or combinations of feeding, temperature, and LD cycles also showed rhythmic activity but it was less persistent and of a lower amplitude than the rhythms of the mother-reared group. In the isolated rat pups nocturnal partitioning of activity was strengthened in the presence of both a light-dark cycle and a feeding cycle but only when the feeding resembled more natural nursing rhythms. In animals kept on constant light and a feeding cycle, activity occurred slightly more often during the 12-hr interval of decreased food intake. The addition of a temperature cycle—cooler nocturnal temperature—decreased the proportions of nocturnal motor activity. These results indicate that feeding and light-dark cycles may contribute to the synchronization of activity rhythms during the early postnatal period.</description><subject>Activity Cycles</subject><subject>Activity levels. Psychomotricity</subject><subject>ALIMENTACION DE LOS ANIMALES</subject><subject>ALIMENTATION DES ANIMAUX</subject><subject>ANIMAL FEEDING</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>CACHORRO</subject><subject>CHIOT</subject><subject>Circadian Rhythm</subject><subject>Eating</subject><subject>Feeding cycle</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Homeostasis</subject><subject>Light</subject><subject>LIGHT REGIMES</subject><subject>Maternal Deprivation</subject><subject>Maternal isolation</subject><subject>MATERNIDAD</subject><subject>MATERNITE</subject><subject>MATERNITY</subject><subject>Nocturnal activity</subject><subject>Ontogeny</subject><subject>Periodicity</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. Psychophysiology</subject><subject>Psychomotor activities</subject><subject>PUPPIES</subject><subject>RAT</subject><subject>RATA</subject><subject>RATS</subject><subject>Rats, Inbred Strains</subject><subject>REGIME LUMINEUX</subject><subject>REGIMENES DE LUZ</subject><subject>Rhythms</subject><subject>TEMPERATURA</subject><subject>TEMPERATURE</subject><issn>0031-9384</issn><issn>1873-507X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkcGKFDEQhoMo6-zoC4hCDiJ6aK1MupP0RZBlV4UFD7roLVQnlZlIT_eY9Cz025vZGeaopxD-r4qqrxh7KeC9AKE-AEhRtdLUb41-1wKAquARWwijZdWA_vWYLc7IU3aZ8-_CgKzlBbuQjW7qBhbs53UI5KbMx8ADkY_DmuPgeR_Xm4m72fVUsoGjm-J9nGaeNvO02T7wW5woDdj3M4957MvP84QT3-13-Rl7ErDP9Pz0LtndzfWPqy_V7bfPX68-3Vaulmqquk6p1gAhSELjFdXonSLXCW8koOqo0x0AuRY6aINulfCd8Q0CthRWjVyyN8e-uzT-2VOe7DZmR32PA437bLVuwNSw-i8oaqVbXdwtWX0EXRpzThTsLsUtptkKsAfx9mDVHqxao-2DeAul7NWp_77bkj8XnUyX_PUpx-ywDwkHF_MZMyupRXvY58URCzhaXKeC3H0vUzXNSpTw4zGkYvQ-UrLZRRpcOVsqR7R-jP8e8i_tVqf9</recordid><startdate>1987</startdate><enddate>1987</enddate><creator>Anderson, Veanne N.</creator><creator>Smith, Grant K.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</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>7QG</scope><scope>7X8</scope></search><sort><creationdate>1987</creationdate><title>Effects of feeding and light cycles on activity rhythms of maternally isolated rat pups</title><author>Anderson, Veanne N. ; Smith, Grant K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c436t-bb66980ea03ea8d6e4adc6ecb1d830a6beb7b00ec90b09f7961db8d5a0a9ef253</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><topic>Activity Cycles</topic><topic>Activity levels. Psychomotricity</topic><topic>ALIMENTACION DE LOS ANIMALES</topic><topic>ALIMENTATION DES ANIMAUX</topic><topic>ANIMAL FEEDING</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>CACHORRO</topic><topic>CHIOT</topic><topic>Circadian Rhythm</topic><topic>Eating</topic><topic>Feeding cycle</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Homeostasis</topic><topic>Light</topic><topic>LIGHT REGIMES</topic><topic>Maternal Deprivation</topic><topic>Maternal isolation</topic><topic>MATERNIDAD</topic><topic>MATERNITE</topic><topic>MATERNITY</topic><topic>Nocturnal activity</topic><topic>Ontogeny</topic><topic>Periodicity</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Psychomotor activities</topic><topic>PUPPIES</topic><topic>RAT</topic><topic>RATA</topic><topic>RATS</topic><topic>Rats, Inbred Strains</topic><topic>REGIME LUMINEUX</topic><topic>REGIMENES DE LUZ</topic><topic>Rhythms</topic><topic>TEMPERATURA</topic><topic>TEMPERATURE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Anderson, Veanne N.</creatorcontrib><creatorcontrib>Smith, Grant K.</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Physiology & behavior</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Anderson, Veanne N.</au><au>Smith, Grant K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of feeding and light cycles on activity rhythms of maternally isolated rat pups</atitle><jtitle>Physiology & behavior</jtitle><addtitle>Physiol Behav</addtitle><date>1987</date><risdate>1987</risdate><volume>39</volume><issue>2</issue><spage>169</spage><epage>181</epage><pages>169-181</pages><issn>0031-9384</issn><eissn>1873-507X</eissn><abstract>Motor activity of infant rat pups was measured continuously between days 3 and 18 of postnatal age. Mother-reared rats on a 12:12 LD cycle exhibited significant rhythmic activity in the circadian range as early as day 5 of postnatal age. Some of the pups reared in isolation from maternal and sibling contact and kept on 12:12 LD cycles, feeding cycles, or combinations of feeding, temperature, and LD cycles also showed rhythmic activity but it was less persistent and of a lower amplitude than the rhythms of the mother-reared group. In the isolated rat pups nocturnal partitioning of activity was strengthened in the presence of both a light-dark cycle and a feeding cycle but only when the feeding resembled more natural nursing rhythms. In animals kept on constant light and a feeding cycle, activity occurred slightly more often during the 12-hr interval of decreased food intake. The addition of a temperature cycle—cooler nocturnal temperature—decreased the proportions of nocturnal motor activity. These results indicate that feeding and light-dark cycles may contribute to the synchronization of activity rhythms during the early postnatal period.</abstract><cop>Cambridge</cop><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>3575450</pmid><doi>10.1016/0031-9384(87)90006-0</doi><tpages>13</tpages></addata></record> |
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| ispartof | Physiology & behavior, 1987, Vol.39 (2), p.169-181 |
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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Activity Cycles Activity levels. Psychomotricity ALIMENTACION DE LOS ANIMALES ALIMENTATION DES ANIMAUX ANIMAL FEEDING Animals Biological and medical sciences CACHORRO CHIOT Circadian Rhythm Eating Feeding cycle Fundamental and applied biological sciences. Psychology Homeostasis Light LIGHT REGIMES Maternal Deprivation Maternal isolation MATERNIDAD MATERNITE MATERNITY Nocturnal activity Ontogeny Periodicity Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychomotor activities PUPPIES RAT RATA RATS Rats, Inbred Strains REGIME LUMINEUX REGIMENES DE LUZ Rhythms TEMPERATURA TEMPERATURE |
| title | Effects of feeding and light cycles on activity rhythms of maternally isolated rat pups |
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