Interspecific Allometries Are by-Products of Body Size Optimization

Koziowski, Jan; Weiner, January

doi:10.1086/285994

Cited by 255 publications

(217 citation statements)

References 29 publications

Supporting

Mentioning

205

Contrasting

Order By: Relevance

“…Models of life history evolution tend to assume that organisms vary along a single "slow-fast" continuum, implying that different components of life history, such as growth, reproductive rate, and lifespan, are tightly interlinked, and thus that ratios between them are invariant across taxa (23,24). This assumption has recently been challenged (25,26).…”

Section: Discussionmentioning

confidence: 99%

Maternal investment, life histories, and the costs of brain growth in mammals

Barton

Capellini

2011

Proc. Natl. Acad. Sci. U.S.A.

181

207

View full text Add to dashboard Cite

Brain size variation in mammals correlates with life histories: largerbrained species have longer gestations, mature later, and have increased lifespans. These patterns have been explained in terms of developmental costs (larger brains take longer to grow) and cognitive benefits (large brains enhance survival and increase lifespan). In support of the developmental cost hypothesis, we show that evolutionary changes in pre-and postnatal brain growth correlate specifically with duration of the relevant phases of maternal investment (gestation and lactation, respectively). We also find support for the hypothesis that the rate of fetal brain growth is related to the energy turnover of the mother. In contrast, we find no support for hypotheses proposing that costs are accommodated through direct tradeoffs between brain and body growth, or between brain growth and litter size. When the duration of maternal investment is taken into account, adult brain size is uncorrelated with other life history traits such as lifespan. Hence, the general pattern of slower life histories in large-brained species appears to be a direct consequence of developmental costs.

show abstract

Section: Discussionmentioning

confidence: 99%

Maternal investment, life histories, and the costs of brain growth in mammals

Barton

Capellini

2011

Proc. Natl. Acad. Sci. U.S.A.

181

207

View full text Add to dashboard Cite

show abstract

“…We stress that future studies should reconcile the cellular and physiological (1-3) mechanisms associated with growth rate evolution, and should investigate their role in the origin of metabolic scaling variability on different levels of biological organization. Successful integration of these phenomena promises evolutionary explanations of different large-scale phenomena such as Bergmann's rule in ectotherms or patterns in interspecific body size distributions and life histories (Kozlowski and Weiner, 1997;Kindlemann et al, 1999;Kozlowski and Gawelczyk, 2002;Angilletta and Dunham, 2003;Kozlowski et al, 2003;Kozlowski et al, 2004).…”

Section: Linking Metabolic Scaling Growth and Cell Size -Future Prosmentioning

confidence: 99%

“…Metabolic scaling is expected to affect optimal resource allocation to growth and reproduction, so it should substantially influence the life history of organisms (Kozlowski and Teriokhin, 1999;Czarnolę ski et al, 2003). Emerging evidence suggests that adaptive allocation responses to shifts in metabolic scaling can explain different ecological and evolutionary phenomena, such as the so-called 'temperature-size rule' in ectotherms (slower growth and larger final body size in colder environments) (Angilletta and Dunham, 2003;Kozlowski et al, 2004), or the interspecific patterns of body size distributions and life history allometries (Kozlowski and Weiner, 1997;Kindlemann et al, 1999;Kozlowski and Gawelczyk, 2002). In this work we examine the link between size-scaling of metabolism and growth rate in Helix aspersa snails.…”

Section: Introductionmentioning

confidence: 99%

Scaling of metabolism inHelix aspersasnails: changes through ontogeny and response to selection for increased size

Czarnołęski

Kozłowski

Dumiot

et al. 2008

Journal of Experimental Biology

View full text Add to dashboard Cite

SUMMARYThough many are convinced otherwise, variability of the size-scaling of metabolism is widespread in nature, and the factors driving that remain unknown. Here we test a hypothesis that the increased expenditure associated with faster growth increases metabolic scaling. We compare metabolic scaling in the fast-and slow-growth phases of ontogeny of Helix aspersa snails artificially selected or not selected for increased adult size. The selected line evolved larger egg and adult sizes and a faster sizespecific growth rate, without a change in the developmental rate. Both lines had comparable food consumption but the selected snails grew more efficiently and had lower metabolism early in ontogeny. Attainment of lower metabolism was accompanied by decreased shell production, indicating that the increased growth was fuelled partly at the expense of shell production. As predicted, the scaling of oxygen consumption with body mass was isometric or nearly isometric in the fast-growing (early) ontogenetic stage, and it became negatively allometric in the slow-growing (late) stage; metabolic scaling tended to be steeper in selected (fast-growing) than in control (slow-growing) snails; this difference disappeared later in ontogeny. Differences in metabolic scaling were not related to shifts in the scaling of metabolically inert shell. Our results support the view that changes in metabolic scaling through ontogeny and the variability of metabolic scaling between organisms can be affected by differential growth rates. We stress that future approaches to this phenomenon should consider the metabolic effects of cell size changes which underlie shifts in the growth pattern.

show abstract

“…Allometric changes during ontogeny may reflect some functional relationship between body size and physiological or life-history parameters (GOULD 1966, KOBAYASHI 2002, or may be a by-product of some underlying mechanism (KOZLOWSKI & WEINER 1997). Accordingly, allometric changes may reflect metabolic rates at several sizes or ages and provide support for biological explanations of life histories.…”

Section: Sizmentioning

confidence: 99%

Size at sexual maturity of female crabs Sesarma rectum Randall (Crustacea, Brachyura) and ontogenetic variations in the abdomen relative growth

Leme

2005

Rev. Bras. Zool.

View full text Add to dashboard Cite

ABSTRACT. The aim of the present study was to ascertain the size at sexual maturity in females of the crab Sesarma rectum Randall, 1840 by comparing gonadal maturity to morphologic maturity (using abdomen-width data). The relative growth of the abdomen was analysed for all growth phases (for each 3-mm carapace width size class), and the slopes of the separate allometric relationships were compared through analysis of covariance (ANCOVA) from log e -transformed data to detect changes in the level of allometry during ontogeny. The physiological size at maturity (gonadal criteria) was determined through a logistic curve, indicating the size at which 50% of females presented mature gonads (M 50 = 17.4 mm CW). The highest allometric levels occurred in growth phases 2 and 3 (body sizes ranging from 15 to 21 mm CW), indicating faster growth of the abdomen during those phases. Phases 1 (< 15 mm CW) and 4 and 5 (size classes above 21 mm CW) showed isometric growth. In the study area, a mangrove on the northern coast of the state of São Paulo, Brazil, individuals of S. rectum began to reach sexual maturity from 15 mm CW onward, when the slopes of the relationship of abdomen width to carapace width became positively allometric, indicating a differential growth rate. A gradual decrease in the slope, tending to isometry, occurred during ontogeny, as the animals became larger (older).

show abstract

Interspecific Allometries Are by-Products of Body Size Optimization

Cited by 255 publications

References 29 publications

Maternal investment, life histories, and the costs of brain growth in mammals

Maternal investment, life histories, and the costs of brain growth in mammals

Scaling of metabolism inHelix aspersasnails: changes through ontogeny and response to selection for increased size

Size at sexual maturity of female crabs Sesarma rectum Randall (Crustacea, Brachyura) and ontogenetic variations in the abdomen relative growth

Contact Info

Product

Resources

About