Multiple resources and the optimal balance between size and number of offspring

Mark, Alan MCGINLEY, Eric L. CHARNOV

Research output: Journal PublicationsJournal Article (refereed)

64 Citations (Scopus)

Abstract

We extend the classical Smith-Fretwell model for the optimal size of an offspring to the case of allocation of two or more fitness enhancing resources. Unlike the results of the single-resource model, the new model predicts that the optimal allocations will depend on the resource pool sizes. We apply this new model to the problem of carbon and nitrogen allocation to seeds and conclude (1) that the optimal seed size (carbon allocation) should be positively correlated with the ratio of the size of the carbon and nitrogen pools available for investment to offspring (C/N ratio) and (2) that there should be a negative correlation between seed size and absolute seed nitrogen content. These results may account for some of the within- and between-plant variation in resource allocation to seeds.
Original languageEnglish
Pages (from-to)77-84
Number of pages8
JournalEvolutionary Ecology
Volume2
Issue number1
DOIs
Publication statusPublished - 1 Jan 1988
Externally publishedYes

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seed size
resource
seeds
seed
nitrogen
carbon
biomass allocation
resource allocation
fitness
carbon nitrogen ratio
nitrogen content
allocation

Cite this

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title = "Multiple resources and the optimal balance between size and number of offspring",
abstract = "We extend the classical Smith-Fretwell model for the optimal size of an offspring to the case of allocation of two or more fitness enhancing resources. Unlike the results of the single-resource model, the new model predicts that the optimal allocations will depend on the resource pool sizes. We apply this new model to the problem of carbon and nitrogen allocation to seeds and conclude (1) that the optimal seed size (carbon allocation) should be positively correlated with the ratio of the size of the carbon and nitrogen pools available for investment to offspring (C/N ratio) and (2) that there should be a negative correlation between seed size and absolute seed nitrogen content. These results may account for some of the within- and between-plant variation in resource allocation to seeds.",
author = "MCGINLEY, {Mark, Alan} and CHARNOV, {Eric L.}",
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Multiple resources and the optimal balance between size and number of offspring. / MCGINLEY, Mark, Alan; CHARNOV, Eric L.

In: Evolutionary Ecology, Vol. 2, No. 1, 01.01.1988, p. 77-84.

Research output: Journal PublicationsJournal Article (refereed)

TY - JOUR

T1 - Multiple resources and the optimal balance between size and number of offspring

AU - MCGINLEY, Mark, Alan

AU - CHARNOV, Eric L.

PY - 1988/1/1

Y1 - 1988/1/1

N2 - We extend the classical Smith-Fretwell model for the optimal size of an offspring to the case of allocation of two or more fitness enhancing resources. Unlike the results of the single-resource model, the new model predicts that the optimal allocations will depend on the resource pool sizes. We apply this new model to the problem of carbon and nitrogen allocation to seeds and conclude (1) that the optimal seed size (carbon allocation) should be positively correlated with the ratio of the size of the carbon and nitrogen pools available for investment to offspring (C/N ratio) and (2) that there should be a negative correlation between seed size and absolute seed nitrogen content. These results may account for some of the within- and between-plant variation in resource allocation to seeds.

AB - We extend the classical Smith-Fretwell model for the optimal size of an offspring to the case of allocation of two or more fitness enhancing resources. Unlike the results of the single-resource model, the new model predicts that the optimal allocations will depend on the resource pool sizes. We apply this new model to the problem of carbon and nitrogen allocation to seeds and conclude (1) that the optimal seed size (carbon allocation) should be positively correlated with the ratio of the size of the carbon and nitrogen pools available for investment to offspring (C/N ratio) and (2) that there should be a negative correlation between seed size and absolute seed nitrogen content. These results may account for some of the within- and between-plant variation in resource allocation to seeds.

UR - http://commons.ln.edu.hk/sw_master/4756

U2 - 10.1007/BF02071590

DO - 10.1007/BF02071590

M3 - Journal Article (refereed)

VL - 2

SP - 77

EP - 84

JO - Evolutionary Ecology

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SN - 0269-7653

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ER -