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      Relationships between body size and some life history parameters.

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          Abstract

          Patterns in life history phenomena may be demonstrated by examining wide ranges of body weight. Positive relationships exist between adult body size and the clutch size of poikilotherms, litter weight, neonate weight life span, maturation time and, for homeotherms at least, brood or gestation time. The complex of these factors reduces r max in larger animals or, in more physiological terms, r max is set by individual growth rate. Comparison of neonatal production with ingestion and assimilation suggests that larger mammals put proportionately less effort into reproduction. Declining parental investment and longer development times would result if neonatal weight is scaled allometrically to adult weight and neonatal growth rate to neonatal weight. Body size relations represent general ecological theries and therefore hold considerable promise in the development of predictive ecology.

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          Author and article information

          Journal
          Oecologia
          Oecologia
          Springer Nature
          1432-1939
          0029-8549
          Jan 1978
          : 37
          : 2
          Affiliations
          [1 ] Department of Biology, McGill University, 1205 McGregor Avenue, H3A 1B1, Montreal, Quebec, Canada.
          Article
          10.1007/BF00344996
          10.1007/BF00344996
          28309655
          fdb4693e-cb4d-459e-b490-a0b4c6cca580

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