Quantitative Assessment of Variation in Litter Size of the Raccoon Procyon lotor

Geographic variation in litter size of the raccoon (Procyon lotor) is positively correlated with latitude, longitude and female body size. The positive correlation between litter size and body size for raccoons is inconsistent with interspecific patterns of litter size-body size variation of carnivo...

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Veröffentlicht in:	The American midland naturalist 1990-04, Vol.123 (2), p.390-398
1. Verfasser:	Ritke, Mark E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anatomy & physiology Animal reproduction Body size Continental divides Evolution Geographical variation Latitude Litter size Mammals Procyon lotor Rats Reproduction Sexual reproduction
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container_title	The American midland naturalist
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description	Geographic variation in litter size of the raccoon (Procyon lotor) is positively correlated with latitude, longitude and female body size. The positive correlation between litter size and body size for raccoons is inconsistent with interspecific patterns of litter size-body size variation of carnivores in which litter size decreases with increasing body size. Multiple regression analysis revealed that only body size explains a significant amount of the variation in raccoon litter size. Geographic variation in litter size of raccoons occurs because there is geographic variation in female body size whereas climatic factors associated with latitude and longitude appear to influence litter size only indirectly via their effects on body size.
doi_str_mv	10.2307/2426567
format	Article
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The positive correlation between litter size and body size for raccoons is inconsistent with interspecific patterns of litter size-body size variation of carnivores in which litter size decreases with increasing body size. Multiple regression analysis revealed that only body size explains a significant amount of the variation in raccoon litter size. 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The positive correlation between litter size and body size for raccoons is inconsistent with interspecific patterns of litter size-body size variation of carnivores in which litter size decreases with increasing body size. Multiple regression analysis revealed that only body size explains a significant amount of the variation in raccoon litter size. Geographic variation in litter size of raccoons occurs because there is geographic variation in female body size whereas climatic factors associated with latitude and longitude appear to influence litter size only indirectly via their effects on body size.</description><subject>Anatomy & physiology</subject><subject>Animal reproduction</subject><subject>Body size</subject><subject>Continental divides</subject><subject>Evolution</subject><subject>Geographical variation</subject><subject>Latitude</subject><subject>Litter size</subject><subject>Mammals</subject><subject>Procyon lotor</subject><subject>Rats</subject><subject>Reproduction</subject><subject>Sexual reproduction</subject><issn>0003-0031</issn><issn>1938-4238</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNp1kFtLAzEQhYMoWKv4F4KIPq3mtrk8luINCtbra8jGLKZsNzXJCvXXm9I-CT4Mw5zzMcwcAE4xuiIUiWvCCK-52AMjrKisGKFyH4wQQrQqhQ_BUUqLMiqm2AjMnwbTZ59N9t8OTlJyKS1dn2Fo4buJvuihh76HM5-zi_DF_7iNlz8dfDbWhuLOY7Dr0ruQQzwGB63pkjvZ9TF4u715nd5Xs8e7h-lkVlkqeK6U4hJzq2yrimCRcA0VtaLMNoZaLBsiWQGdZaj9kDW3bc2VkkRhwVQtGjoGF9u9qxi-BpeyXvpkXdeZ3oUhaVxzxrBUBTz7Ay7CEPtymya0ZCAxwwW63EI2hpSia_Uq-qWJa42R3sSqd7EW8nxLLlL59l_sF5KSc0M</recordid><startdate>19900401</startdate><enddate>19900401</enddate><creator>Ritke, Mark E.</creator><general>University of Notre Dame</general><general>American Midland Naturalist</general><scope>AAYXX</scope><scope>CITATION</scope><scope>4T-</scope><scope>4U-</scope><scope>7QG</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope></search><sort><creationdate>19900401</creationdate><title>Quantitative Assessment of Variation in Litter Size of the Raccoon Procyon lotor</title><author>Ritke, Mark E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c376t-996816c9cf9c37c07eb375934cba3c18b284376ec40fd856cf5699829174957b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>Anatomy & physiology</topic><topic>Animal reproduction</topic><topic>Body size</topic><topic>Continental divides</topic><topic>Evolution</topic><topic>Geographical variation</topic><topic>Latitude</topic><topic>Litter size</topic><topic>Mammals</topic><topic>Procyon lotor</topic><topic>Rats</topic><topic>Reproduction</topic><topic>Sexual reproduction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ritke, Mark E.</creatorcontrib><collection>CrossRef</collection><collection>Docstoc</collection><collection>University Readers</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><jtitle>The American midland naturalist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ritke, Mark E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantitative Assessment of Variation in Litter Size of the Raccoon Procyon lotor</atitle><jtitle>The American midland naturalist</jtitle><date>1990-04-01</date><risdate>1990</risdate><volume>123</volume><issue>2</issue><spage>390</spage><epage>398</epage><pages>390-398</pages><issn>0003-0031</issn><eissn>1938-4238</eissn><coden>AMNAAF</coden><abstract>Geographic variation in litter size of the raccoon (Procyon lotor) is positively correlated with latitude, longitude and female body size. The positive correlation between litter size and body size for raccoons is inconsistent with interspecific patterns of litter size-body size variation of carnivores in which litter size decreases with increasing body size. Multiple regression analysis revealed that only body size explains a significant amount of the variation in raccoon litter size. Geographic variation in litter size of raccoons occurs because there is geographic variation in female body size whereas climatic factors associated with latitude and longitude appear to influence litter size only indirectly via their effects on body size.</abstract><cop>Notre Dame</cop><pub>University of Notre Dame</pub><doi>10.2307/2426567</doi><tpages>9</tpages></addata></record>
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source	Jstor Complete Legacy
subjects	Anatomy & physiology Animal reproduction Body size Continental divides Evolution Geographical variation Latitude Litter size Mammals Procyon lotor Rats Reproduction Sexual reproduction
title	Quantitative Assessment of Variation in Litter Size of the Raccoon Procyon lotor
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